DP Tool Club 15/CD_ASCQ_15_070894.iso/maj/4266/interrup.b

Text File | 1994-06-05 | 314KB | 8,363 lines

Interrupt List, part 2 of 11
This compilation is Copyright (c) 1989,1990,1991,1992,1993,1994 Ralf Brown
--------S-14---------------------------------
INT 14 - SERIAL - Digiboard DigiCHANNEL PC/X* Extender INT 14 (XAPCM232.SYS)
Note:    the installation check for this driver is to determine whether the
      "~DOSXAM~" character device exists
Index:    installation check;Digiboard DigiCHANNEL
--------S-1400-------------------------------
INT 14 - SERIAL - INITIALIZE PORT
    AH = 00h
    AL = port parameters (see #0151)
    DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see #0155)
        FFh if error on Digiboard XAPCM232.SYS
    AL = modem status (see #0156)
Notes:    default handler is at F000h:E739h in IBM PC and 100% compatible BIOSes
    since the PCjr supports a maximum of 4800 bps, attempting to set 9600
      bps will result in 4800 bps
    various network and serial-port drivers support the standard BIOS
      functions with interrupt-driven I/O instead of the BIOS's polled I/O
    the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=04h"SERIAL",AH=04h"MultiDOS",AH=05h"SERIAL",AH=57h
SeeAlso: AX=8000h"ARTICOM",AH=81h"COMM-DRV",AH=82h"COURIERS",AH=8Ch

Bitfields for serial port parameters:
Bit(s)    Description    (Table 0151)
 7-5    data rate (110,150,300,600,1200,2400,4800,9600 bps)
 4-3    parity (00 or 10 = none, 01 = odd, 11 = even)
 2    stop bits (set = 2, clear = 1)
 1-0    data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
--------S-1400-------------------------------
INT 14 - FOSSIL (Fido/Opus/Seadog Standard Interface Level) - INITIALIZE
    AH = 00h
    AL = initializing parameters
        7 - 6 - 5       4 - 3     2      1 - 0
        -BAUD RATE-       PARITY   STOP   WORD
                    BITS  LENGTH
        000 19200 bd   00 none  0: 1  00: 5
        001 38400 bd   01 odd   1: 2  01: 6
        010      300 bd   11 even      10: 7
        011      600 bd          11: 8
        100     1200 bd
        101     2400 bd
        110     4800 bd
        111     9600 bd (4800 on PCjr)
    DX = port number (0-3 or FFh if only performing non-I/O setup)
Return: AH = RS-232 status code bits (see #0152)
    AL = modem status bits
        bit 3: always 1
        bit 7: DCD - carrier detect
SeeAlso: AH=05h"FOSSIL",AH=81h"COMM-DRV",AH=82h"COURIERS"

Bitfields for FOSSIL RS-232 status:
Bit(s)    Description    (Table 0152)
 0    RDA - input data is available in buffer
 1    OVRN - data has been lost
 5    THRE - room is available in output buffer
 6    TSRE - output buffer empty
--------S-1400-------------------------------
INT 14 - MBBIOS - INITIALIZE PORT
    AH = 00h
    AL = port parameters (see #0153)
    DX = port number
Return: AH = line status (see #0155)
    AL = modem status (see #0156)
Note:    MBBIOS was written by H. Roy Engehausen
SeeAlso: AH=04h"MBBIOS",AH=05h"MBBIOS",AH=09h"MBBIOS"

Bitfields for MBBIOS port parameters:
Bit(s)    Description    (Table 0153)
 7-5    data rate
    (normally 110,150,300,600,1200,2400,4800,9600 bps;
    9600,14400,19200,28800,38400,57600,115200,330400 bps
    if the high-speed option is set)
 4-3    parity (00 or 10 = none, 01 = odd, 11 = even)
 2    stop bits (set = 2, clear = 1)
 1-0    data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
--------N-1400--DXFFFF-----------------------
INT 14 - Connection Manager - MODIFY DEFAULT CONNECTION PARAMETERS
    AH = 00h
    DX = FFFFh
    ES:DI -> vector string specifying new parameters
Return: AH = return code (00h,03h) (see #0154)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
Note:    if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
      function, but redirects the port over the network; if DX is any other
      value, the call is chained
SeeAlso: AH=04h/DX=FFFFh,AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh

(Table 0154)
Values for Connection Manager return code:
 00h    successful
 01h    no such connection
 02h    invalid connection ID
 03h    invalid subvector found
 04h    communication error (check BH)
 06h    insufficient resources, retry later
 FFh    no data available
--------S-1401-------------------------------
INT 14 - SERIAL - WRITE CHARACTER TO PORT
    AH = 01h
    AL = character to write
    DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH bit 7 clear if successful
    AH bit 7 set on error
    AH bits 6-0 = port status (see #0155)
Notes:    various network and serial-port drivers support the standard BIOS
      functions with interrupt-driven I/O instead of the BIOS's polled I/O
    the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=02h,AH=0Bh"FOSSIL",AX=8000h"ARTICOM",AH=89h
--------N-1401--DXFFFF-----------------------
INT 14 - Connection Manager - SEND CHARACTER
    AH = 01h
    DX = FFFFh
    BH = character to send
Return: AH = return code (00h-02h,06h) (see #0154)
Notes:    if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
      function, but redirects the port over the network; if DX is any other
      value, the call is chained
    this function is provided primarily for compatibility; AH=06h/DX=FFFFh
      is the preferred function because it provides better performance
SeeAlso: AH=02h/DX=FFFFh,AX=06h/DX=FFFFh,AH=09h/DX=FFFFh
--------S-1402-------------------------------
INT 14 - SERIAL - READ CHARACTER FROM PORT
    AH = 02h
    AL = 00h (ArtiCom)
    DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
Return: AH = line status (see #0155)
    AL = received character if AH bit 7 clear
Notes:    will timeout if DSR is not asserted, even if function 03h returns
      data ready
    various network and serial-port drivers support the standard BIOS
      functions with interrupt-driven I/O instead of the BIOS's polled I/O
    the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=01h,AH=02h"FOSSIL",AH=84h,AH=FCh
--------S-1402-------------------------------
INT 14 - FOSSIL - RECEIVE CHARACTER WITH WAIT
    AH = 02h
    DX = port number (0-3)
Return: AL = character received
    AH = 00h
SeeAlso: AH=01h,AH=02h"SERIAL"
--------N-1402--DXFFFF-----------------------
INT 14 - Connection Manager - RECEIVE CHARACTER
    AH = 02h
    DX = FFFFh
    BH = character to send
Return: AH = return code (00h-02h,04h,FFh) (see #0154)
    BH = line status (see #0155)
    AL = received character (if any)
Notes:    if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
      function, but redirects the port over the network; if DX is any other
      value, the call is chained
    this function is provided primarily for compatibility; AH=07h/DX=FFFFh
      is the preferred function because it provides better performance
SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh,AH=06h/DX=FFFFh
--------S-1403-------------------------------
INT 14 - SERIAL - GET PORT STATUS
    AH = 03h
    AL = 00h (ArtiCom)
    DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see #0155)
    AL = modem status (see #0156)
    AX = 9E00h if disconnected (ArtiCom)
Note:    the 04/08/93 Compaq system ROM uses only the low two bits of DX
SeeAlso: AH=00h,AH=07h"MultiDOS",AX=8000h"ARTICOM",AH=81h"COURIERS",AX=FD02h

Bitfields for serial line status:
Bit(s)    Description    (Table 0155)
 7    timeout
 6    transmit shift register empty
 5    transmit holding register empty
 4    break detected
 3    framing error
 2    parity error
 1    overrun error
 0    receive data ready
Note:    for COMM-DRV, if bit 7 is set, an error occurred, and may be retrieved
      through a separate call (see AX=8000h"COMM-DRV")

Bitfields for modem status:
Bit(s)    Description    (Table 0156)
 7    carrier detect
 6    ring indicator
 5    data set ready
 4    clear to send
 3    delta carrier detect
 2    trailing edge of ring indicator
 1    delta data set ready
 0    delta clear to send
--------N-1403--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN COMMUNICATION PORT STATUS
    AH = 03h
    DX = FFFFh
    AL = connection ID
Return: AH = return code (00h-02h) (see #0154)
    BH = line status (see #0157)
    BL = modem status (see #0156) (only bits 4,5,7; all others zero)
Notes:    if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
      function, but redirects the port over the network; if DX is any other
      value, the call is chained
SeeAlso: AH=00h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Ah/DX=FFFFh

Bitfields for Connection Manager line status:
Bit(s)    Description    (Table 0157)
 7    CTS changed
 6    current CTS state
 5    timeout
 4    break
 3    framing error
 2    parity error
 1    overrun
 0    current carrier state (0 active, 1 no carrier)
--------S-1404-------------------------------
INT 14 - SERIAL - EXTENDED INITIALIZE (CONVERTIBLE,PS)
    AH = 04h
    AL = break status
        00h if break
        01h if no break
    BH = parity (see #0158)
    BL = number of stop bits
        00h one stop bit
        01h two stop bits (1.5 if 5 bit word length)
    CH = word length (see #0159)
    CL = bps rate (see #0160)
    DX = port number
Return: AX = port status code (see #0155,#0156)
SeeAlso: AH=00h,AH=1Eh,AX=8000h"ARTICOM"

(Table 0158)
Values for serial port parity:
 00h    no parity
 01h    odd parity
 02h    even parity
 03h    stick parity odd
 04h    stick parity even

(Table 0159)
Values for serial port word length:
 00h    5 bits
 01h    6 bits
 02h    7 bits
 03h    8 bits

(Table 0160)
Values for serial port bps rate:
 00h    110
 01h    150
 02h    300
 03h    600
 04h    1200
 05h    2400
 06h    4800
 07h    9600
 08h    19200
--------S-1404-------------------------------
INT 14 - FOSSIL - INITIALIZE DRIVER
    AH = 04h
    DX = port number
    optionally BX=4F50h
           ES:CX -> byte to be set upon ^C
Return: AX = 1954h (if successful)
    BL = maximum function number supported (excluding 7Eh and above)
    BH = revision of FOSSIL specification supported
    DTR is raised
Note:    the word at offset 6 in the interrupt handler contains 1954h, and the
      following byte contains the maximum function number supported; this
      can serve as an installation check
SeeAlso: AH=05h"FOSSIL",AH=1Ch,INT 11/AH=BCh
Index:    installation check;FOSSIL
--------S-1404-------------------------------
INT 14 - MultiDOS Plus IODRV - INITIALIZE PORT
    AH = 04h
Return: port initialized; if Hayes-compatible modem, a connection has been
      established
Note:    the port number is stored at offset BEh in the Task Control Block
      (see #0293 at INT 15/AH=13h"MultiDOS")
SeeAlso: AH=00h,AH=05h"MultiDOS",AH=20h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1404-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE BAUD RATE
    AH = 04h
    AL = initializing parameters (see #0161)
    BX = baud rate
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        FFh error
SeeAlso: AH=05h"Digiboard"

Bitfields for Digiboard initializing parameters:
Bit(s)    Description    (Table 0161)
 7-5    unused
 4-3    parity (00 none, 01 odd, 11 even)
 2    stop bits (0 = one, 1 = two)
 1-0    data bits (00 = five, 01 = six, 10 = seven, 11 = eight)
--------S-1404-------------------------------
INT 14 - MBBIOS - INSTALLATION CHECK
    AH = 04h
    DX = port number
Return: AX = AA55h if installed on specified port
SeeAlso: AH=00h"MBBIOS",AH=09h"MBBIOS"
--------N-1404--DXFFFF-----------------------
INT 14 - Connection Manager - OPEN COMMUNICATION
    AH = 04h
    DX = FFFFh
    ES:DI -> Connection Request protocol vector (see #0162)
Return: AH = return code
        00h successful
        AL = connection ID
        BH = connection type
            00h direct connection or no dialing
            01h Connection Server dialed phone
        01h no response from Connection Server
        03h invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
Desc:    initiate a connection to the Connection Server listed in the current
      Client parameter set
Notes:    if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
      function, but redirects the port over the network; if DX is any other
      value, the call is chained
    all subvectors of the Connection Request vector are optional; if
      missing, default values are provided by the default connection
      parameter set
SeeAlso: AH=00h/DX=FFFFh,AH=05h/DX=FFFFh,AH=06h/DX=FFFFh,AH=07h/DX=FFFFh
SeeAlso: AH=0Ah/DX=FFFFh,AH=0Ch/DX=FFFFh

Format of Connection Manager protocol command vector:
Offset    Size    Description    (Table 0162)
 00h    WORD    (big-endian) total length of command (including this word)
 02h    WORD    (big-endian) command code
        EF01h Connection Request
        EF06h Modify Connection Parameters
 04h  N BYTEs    list of subvectors (see #0164)
        allowable subvector types are 01h-04h,17h,18h for command code
          EF01h; 03h,04h for command code EF06h

(Table 0163)
Values for Connection Manager subvector type code:
 01h    Connection ID
 02h    Destination ID
 03h    Asynchronous line parameters
 04h    Data transfer parameters
 09h    Line speed
 0Ah    Serial coding
 0Bh    Packet size
 0Ch    Timers
 0Dh    Special characters
 0Eh    Target ID
 0Fh    Telephone number
 10h    ASCII destination ID
 11h    Parity
 12h    Bits per character
 13h    Number of stop bits
 14h    Packet timer
 15h    Intercharacter timer
 17h    Flags
 18h    Parameter ranges
 19h    Flow control

Format of Connection Manager subvector:
Offset    Size    Description    (Table 0164)
 00h    BYTE    length of subvector
 01h    BYTE    type code (see #0163)
 02h N-2 BYTEs    data, which may include subvectors
SeeAlso: #0165,#0166,#0167,#0168,#0169,#0170,#0171,#0172,#0173,#0174,#0175
SeeAlso: #0176,#0177,#0179,#0180,#0181,#0182,#0183,#0184

Format of Connection ID subvector:
Offset    Size    Description    (Table 0165)
 00h    BYTE    03h (length)
 01h    BYTE    01h (subvector "Connection ID")
 02h    BYTE    connection ID

Format of Destination ID subvector:
Offset    Size    Description    (Table 0166)
 00h    BYTE    length
 01h    BYTE    02h (subvector "Destination ID")
 02h  N BYTEs    subvector(s) of type 0Eh, 0Fh, or 10h

Format of Asynchronous line parameters subvector:
Offset    Size    Description    (Table 0167)
 00h    BYTE    length
 01h    BYTE    03h (subvector "Asynchronous line parameters")
 02h  N BYTEs    subvector(s) of type 09h, 0Ah, or 19h

Format of Data transfer parameters subvector:
Offset    Size    Description    (Table 0168)
 00h    BYTE    length
 01h    BYTE    04h (subvector "Data transfer parameters")
 02h  N BYTEs    subvector(s) of type 0Bh, 0Ch, or 0Dh

Format of Line speed subvector:
Offset    Size    Description    (Table 0169)
 00h    BYTE    04h (length)
 01h    BYTE    09h (subvector "Line speed")
 02h    WORD    bit map, highest set bit selects speed
        bit 0: 2400
        bits 1-7: 1800, 1200, 600, 300, 115200, 150, 110 bps
        bits 8-15: 57600, 38400, 19200, 14400, 9600, 7200, 4800, 3600

Format of Serial coding subvector:
Offset    Size    Description    (Table 0170)
 00h    BYTE    length
 01h    BYTE    0Ah (subvector "Serial coding")
 02h  N BYTEs    subvector(s) of type 11h, 12h, or 13h

Format of Packet size subvector:
Offset    Size    Description    (Table 0171)
 00h    BYTE    04h (length)
 01h    BYTE    0Bh (subvector "Packet size")
 02h    WORD    (big-endian) packet size, 1 to 1024

Format of Timers subvector:
Offset    Size    Description    (Table 0172)
 00h    BYTE    length
 01h    BYTE    0Ch (subvector "Timers")
 02h  8 BYTEs    subvector of type 14h or 15h

Format of Special characters subvector:
Offset    Size    Description    (Table 0173)
 00h    BYTE    length
 01h    BYTE    0Dh (subvector "Special characters")
 02h  N BYTEs    list of ASCII characters to be used as EOM or EOB

Format of Target ID:
Offset    Size    Description    (Table 0174)
 00h    BYTE    length
 01h    BYTE    0Eh (subvector "Target ID")
 02h  N BYTEs    target ID, 1-16 bytes

Format of Telephone number subvector:
Offset    Size    Description    (Table 0175)
 00h    BYTE    length
 01h    BYTE    0Fh (subvector "Telephone number")
 02h  N BYTEs    telephone number

Format of ASCII destination ID subvector:
Offset    Size    Description    (Table 0176)
 00h    BYTE    length
 01h    BYTE    10h (subvector "ASCII destination ID")
 02h  N BYTEs    destination ID

Format of Parity subvector:
Offset    Size    Description    (Table 0177)
 00h    BYTE    03h (length)
 01h    BYTE    11h (subvector "Parity")
 02h    BYTE    parity type (see #0178)

Bitfields for Connection Manager parity type:
Bit(s)    Description    (Table 0178)
 7    odd
 6    even
 5    mark
 4    space
 3    none

Format of Bits per character subvector:
Offset    Size    Description    (Table 0179)
 00h    BYTE    03h (length)
 01h    BYTE    12h (subvector "Bits per character")
 02h    BYTE    bits per character
        bit 7: seven
        bit 6: eight

Format of Number of stop bits subvector:
Offset    Size    Description    (Table 0180)
 00h    BYTE    03h (length)
 01h    BYTE    13h (subvector "Number of stop bits")
 02h    BYTE    stop bits
        bit 7: one
        bit 6: 1.5
        bit 5: two

Format of Packet timer and Intercharacter timer subvectors:
Offset    Size    Description    (Table 0181)
 00h    BYTE    04h (length)
 01h    BYTE    subvector type
        14h Packet timer
        15h Intercharacter timer
 02h    WORD    (big-endian) unit of value representing 20ms

Format of Flags subvector:
Offset    Size    Description    (Table 0182)
 00h    BYTE    03h (length)
 01h    BYTE    17h (subvector "Flags")
 02h    BYTE    flags
        bit 7: queueing requested

Format of Parameter ranges subvector:
Offset    Size    Description    (Table 0183)
 00h    BYTE    length
 01h    BYTE    18h (subvector "Parameter ranges")
 02h  N BYTEs    subvector(s) of type 09h, 11h, 12h, or 13h

Format of Flow control subvector:
Offset    Size    Description    (Table 0184)
 00h    BYTE    length (02h-04h)
 01h    BYTE    19h (subvector "Flow control")
 02h    BYTE    XOFF character
 03h    BYTE    XON character
Note:    if length is 02h, flow control is disabled; if length is 03h, any
      character will be accepted as XON after an XOFF
--------S-140400-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INSTALLATION CHECK
    AX = 0400h
Return: AX = 0FF0h
SeeAlso: AX=0401h,AX=0408h
--------S-140401-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - INITIALIZE MODE
    AX = 0401h
    CX = mode
SeeAlso: AX=0400h,AX=0402h
--------S-140402-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - EXTENDED INITIALIZE
    AX = 0402h
    CL = parameters
SeeAlso: AX=0400h,AX=0401h
--------S-140403-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - SET TIMEOUT
    AX = 0403h
    CX = timeout
SeeAlso: AX=0400h
--------S-140404-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE RECEIVE BUFFER
    AX = 0404h
SeeAlso: AX=0400h,AX=0405h,AX=0406h
--------S-140405-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET RECEIVE BUFFER COUNT
    AX = 0405h
Return: AX = number of characters in buffer
SeeAlso: AX=0400h,AX=0404h,AX=0407h
--------S-140406-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - CLEAR THE TRANSMIT BUFFER
    AX = 0406h
SeeAlso: AX=0400h,AX=0404h,AX=0407h
--------S-140407-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - GET TRANSMIT BUFFER COUNT
    AX = 0407h
Return: AX = number of characters in the buffer
SeeAlso: AX=0400h,AX=0405h,AX=0406h
--------S-140408-----------------------------
INT 14 - Microsoft Systems Journal TSRCOMM INT14 - UNINSTALL
    AX = 0408h
SeeAlso: AX=0400h
--------S-1405-------------------------------
INT 14 - SERIAL - EXTENDED COMMUNICATION PORT CONTROL (CONVERTIBLE,PS)
    AH = 05h
    AL = function
        00h read modem control register
          Return: BL = modem control register (see #0185)
              AH = status
        01h write modem control register
          BL = modem control register (see #0185)
          Return: AX = status
    DX = port number
Note:    also supported by ArtiCom
SeeAlso: AH=00h,AH=1Fh,AX=8000h"ARTICOM",AH=FBh

Bitfields for modem control register:
Bit(s)    Description    (Table 0185)
 0    data terminal ready
 1    request to send
 2    OUT1
 3    OUT2
 4    LOOP
 5-7    reserved
--------S-1405-------------------------------
INT 14 - FOSSIL - DEINITIALIZE DRIVER
    AH = 05h
    DX = port number
Return: none
    DTR is not affected
SeeAlso: AH=00h,AH=04h"FOSSIL",AH=1Dh,AH=8Dh
--------S-1405-------------------------------
INT 14 - MultiDOS Plus IODRV - READ CHARACTER FROM PORT
    AH = 05h
    AL = timeout in seconds (00h = never)
Return: AL = status
        00h successful
        AH = character read
        01h read error
        02h timed out
        other modem status (CTS, DSR) changed
Note:    the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=02h,AH=04h"MultiDOS",AH=06h"MultiDOS",AH=22h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
--------S-1405-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE PROTOCOL
    AH = 05h
    AL = protocol (see #0186)
    BH = new XOFF character (00h = current)
    BL = new XON character (00h = current)
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        FFh error
SeeAlso: AH=04h"Digiboard"

Bitfields for Digiboard protocol:
Bit(s)    Description    (Table 0186)
 7-4    unused
 3    RTS/CTS
 2    DSR
 1,0    XON/XOFF
--------S-1405-------------------------------
INT 14 - MBBIOS - DROP DTR AND RTS
    AH = 05h
    DX = port number
Return: none
SeeAlso: AH=00h"MBBIOS",AH=06h"MBBIOS",AH=06h"FOSSIL"
--------S-1405-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHANGE PORT PROTOCOL
    AH = 05h
    AL = new port protocol (see #0187)
    BH = new XOFF character
    BL = new XON character
    DX = port number
Return: AH = FFh if invalid protocol
SeeAlso: AH=00h,AH=04h"SERIAL",AH=06h"PC-MOS"

Bitfields for PC-MOS/386 serial port protocol:
Bit(s)    Description    (Table 0187)
 7    set to enable/disable CD monitoring, clear to set protocol
---bit 7 set---
 4    CD monitoring enabled
 5    automatic restart enabled
---bit 7 clear---
 0    receive XON/XOFF
 1    transmit XON/XOFF
 2    DTR/DSR
 3    RTS/CTS
--------N-1405--DXFFFF-----------------------
INT 14 - Connection Manager - CLOSE COMMUNICATION
    AH = 05h
    DX = FFFFh
    AL = connection ID
Return: AH = return code
        00h successful
        01h no such connection
        02h invalid connection ID
        AL = correct connection ID
Desc:    terminate existing connection to allow another one to be established
Note:    if DX is 0-3 on entry, Connection Manager emulates the standard BIOS
      function, but redirects the port over the network; if DX is any other
      value, the call is chained
SeeAlso: AH=04h/DX=FFFFh,AH=0Dh/DX=FFFFh
--------S-1406-------------------------------
INT 14 - FOSSIL - RAISE/LOWER DTR
    AH = 06h
    DX = port
    AL = DTR state to be set
        00h = lower
        01h = raise
SeeAlso: AH=05h"MBBIOS",AH=1Ah
--------S-1406-------------------------------
INT 14 - MultiDOS Plus IODRV - WRITE CHARACTER TO PORT
    AH = 06h
    AL = character
Return: AL = status
        00h successful
Notes:    the port number is stored at offset BEh in the Task Control Block
    if output queue is full, the calling task is blocked until the
      character can be stored
SeeAlso: AH=01h,AH=04h"MultiDOS",AH=05h"MultiDOS",AH=21h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
--------S-1406-------------------------------
INT 14 - MBBIOS - RAISE DTR AND RTS
    AH = 06h
    DX = port number
Return: none
SeeAlso: AH=05h"MBBIOS",AH=07h"MBBIOS"
--------S-1406-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DRIVER 'ID' FUNCTION
    AH = 06h
    DX = port number
Return: AH bit 7 set
    AL = number of highest function supported by driver
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
      operating system by The Software Link, Inc.
SeeAlso: AH=18h"PC-MOS"
--------N-1406-------------------------------
INT 14 - TelAPI - WRITE???
    AH = 06h
    CX = number of characters to write???
    DX = port number
    ES:DI -> buffer containing data???
Return: AX = number of characters actually sent??? (negative on error)
    CX = ???
Note:    under Novell TELAPI.EXE v4.01, this function and AH=07h are implemented
      with identical code
SeeAlso: AH=07h"TelAPI",AH=E0h"TelAPI"
--------N-1406--DXFFFF-----------------------
INT 14 - Connection Manager - SEND CHARACTER BLOCK
    AH = 06h
    DX = FFFFh
    AL = connection ID
    CX = number of characters to send
    ES:DI -> buffer containing data to be sent
Return: AH = return code (see #0154)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=04h/DX=FFFFh,AH=07h/DX=FFFFh,AH=09h/DX=FFFFh
--------S-1407-------------------------------
INT 14 - FOSSIL - RETURN TIMER TICK PARAMETERS
    AH = 07h
Return: AL = timer tick interrupt number
    AH = ticks per second on interrupt number in AL
    DX = approximate number of milliseconds per tick
SeeAlso: AH=16h
--------S-1407-------------------------------
INT 14 - MultiDOS Plus IODRV - GET PORT STATUS
    AH = 07h
Return: CL = modem status (see #0156)
    CH = character at head of input queue (if any)
    DX = number of characters in input queue
Note:    the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=03h,AH=05h"MultiDOS",AH=08h"MultiDOS",AH=09h"MultiDOS"
SeeAlso: AH=23h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1407-------------------------------
INT 14 - MBBIOS - SEND BREAK
    AH = 07h
    DX = port number
Return: none
SeeAlso: AH=06h"MBBIOS"
--------S-1407-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SEND RS-232 BREAK
    AH = 07h
    BX = duration of break in clock ticks
    DX = port number
Return: nothing
--------N-1407-------------------------------
INT 14 - TelAPI - WRITE???
    AH = 07h
    CX = number of characters to write???
    DX = port number
    ES:DI -> buffer containing data???
Return: AX = number of characters actually sent??? (negative on error)
    CX = ???
Note:    under Novell TELAPI.EXE v4.01, this function and AH=06h are implemented
      with identical code
SeeAlso: AH=06h"TelAPI",AH=E0h"TelAPI"
--------N-1407--DXFFFF-----------------------
INT 14 - Connection Manager - RECEIVE CHARACTER BLOCK
    AH = 07h
    DX = FFFFh
    AL = connection ID
    BL = flag
        00h wait for data
        nonzero do not wait if no data avaiable
    CX = size of receive buffer
    ES:DI -> buffer for received characters
Return: AH = return code (00h-02h,04h,FFh) (see #0154)
    BH = line status (see #0157)
    CX = number of characters received
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=01h/DX=FFFFh,AH=04h/DX=FFFFh,AH=06h/DX=FFFFh
--------S-1408-------------------------------
INT 14 - FOSSIL - FLUSH OUTPUT BUFFER WAITING TILL ALL OUTPUT IS DONE
    AH = 08h
    DX = port number
SeeAlso: AH=09h"FOSSIL"
--------S-1408-------------------------------
INT 14 - MultiDOS Plus 4.0 IODRV - GET AND RESET PORT LINE STATUS
    AH = 08h
Return: AL = line status (see #0155)
    AH destroyed
Notes:    the port number is stored at offset BEh in the Task Control Block
    on every line status change, the line status is ORed with the line
      status accumulator; this function returns the accumulator and clears
      it
SeeAlso: AH=03h,AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1408-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - ALTERNATE STATUS CHECK
    AH = 08h
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = RS232 status bits (see #0155 at AH=03h)
    ZF set if no characters queued
    ZF clear if character available
        AL = next character
SeeAlso: AH=03h,AH=08h"PC-MOS",AH=09h"Digiboard",AH=14h"Digiboard"
--------S-1408-------------------------------
INT 14 - MBBIOS - NON-DESTRUCTIVE READ
    AH = 08h
    DX = port number
Return: AL = character (if AH bit 0 set)
    AH = status (see #0155)
SeeAlso: AH=0Bh"MBBIOS",AH=0Ch"FOSSIL"
--------S-1408-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STATUS CHECK
    AH = 08h
    DX = port number
Return: CF set if carrier loss detected
    ZF set if input buffer empty
    ZF clear if characters available
        AL = next character dequeued
--------N-1408--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN DEFAULT CONNECTION PARAMETERS
    AH = 08h
    DX = FFFFh
    CX = size of buffer for parameters or 0000h to get length
    ES:DI -> buffer for parameter vector (see #0162)
Return: AH = return code
        00h successful
        CX = number of bytes required (if CX=0000h on entry)
        CX = number of bytes omitted for lack of space (if CX nonzero)
        nonzero invalid request
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
--------S-1409-------------------------------
INT 14 - FOSSIL - PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT
    AH = 09h
    DX = port number
SeeAlso: AH=08h"FOSSIL",AH=0Ah"FOSSIL",AH=88h
--------S-1409-------------------------------
INT 14 - MultiDOS Plus IODRV - RESET PORT STATUS
    AH = 09h
Return: modem status byte cleared
Note:    the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
--------S-1409-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR BUFFERS
    AH = 09h
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        FFh error
SeeAlso: AH=08h"Digiboard",AH=0Ah"Digiboard",AH=10h"Digiboard"
--------S-1409-------------------------------
INT 14 - MBBIOS - GET/SET OPTIONS
    AH = 09h
    AL = option byte (see #0188)
    DX = port number???
Return: AL = old option byte
SeeAlso: AH=00h"MBBIOS",AH=04h"MBBIOS",AH=10h"FOSSIL"

Bitfields for MBBIOS option byte:
Bit(s)    Description    (Table 0188)
 0    transmit buffering enabled
 2    hardware handshaking enabled
 5    high-speed option enabled (see AH=00h"MBBIOS",#0153)
 other    reserved
--------S-1409-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RESET I/O BUFFER POINTERS
    AH = 09h
    DX = port number
Return: nothing
SeeAlso: AH=13h"PC-MOS"
--------N-1409--DXFFFF-----------------------
INT 14 - Connection Manager - SEND BREAK
    AH = 09h
    DX = FFFFh
    AL = connection ID
Return: AH = return code (00h-02h) (see #0154 at AH=00h/DX=FFFFh)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=02h/DX=FFFFh,AH=03h/DX=FFFFh
--------S-140A-------------------------------
INT 14 - FOSSIL - PURGE INPUT BUFFER THROWING AWAY ALL PENDING INPUT
    AH = 0Ah
    DX = port number
SeeAlso: AH=09h"FOSSIL",AH=85h
--------S-140A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - INPUT QUEUE CHECK
    AH = 0Ah
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters available in buffer
Note:    this function is also supported by the PC-MOS/386 v5.01 $serial.sys
SeeAlso: AH=09h"Digiboard",AH=0Dh"Digiboard"
--------S-140A-------------------------------
INT 14 - MBBIOS - WRITE BUFFER
    AH = 0Ah
    CX = count
    ES:DI -> buffer (see #0189)
Return: AX = status (see #0155,#0156)
    CX = unsent character count
    DI updated
Note:    the PACCOM version of MBBIOS does not use CX or ES:DI; instead, ES
      contains the segment of a buffer containing the packet to be sent,
      which by default will be freed once the packet has been sent.     Use
      AH=0Ch"MBBIOS" to allocate the buffer.
SeeAlso: AH=01h,AH=0Bh"MBBIOS",AH=0Ch"MBBIOS",AH=19h"FOSSIL"

Format of MBBIOS PACCOM buffer:
Offset    Size    Description    (Table 0189)
 00h 504 BYTEs    data area
1F8h    WORD    length of data in data area
1FAh    BYTE    flags/status
        bit 7: don't discard buffer after transmitting data
        bit 6: buffer has been transmitted
1FBh    BYTE    reserved (0) for additional flags/status
1FCh    WORD    user data
1FEh    WORD    MBBIOS-internal pointer to next buffer
--------N-140A--DXFFFF-----------------------
INT 14 - Connection Manager - MODIFY ACTIVE CONNECTION PARAMETERS
    AH = 0Ah
    DX = FFFFh
    ES:DI -> vector string containing new parameters (see #0162)
Return: AH = return code (00h-03h,06h) (see #0154)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
Note:    any subvectors valid for the Change Parameters command replace the
      existing values in the current set
SeeAlso: AH=00h/DX=FFFFh,AH=0Fh/DX=FFFFh
--------S-140B-------------------------------
INT 14 - FOSSIL - TRANSMIT NO WAIT
    AH = 0Bh
    AL = character
    DX = port number
Return: AX = result
        0000h character not accepted
        0001h character accepted
SeeAlso: AH=01h
--------S-140B-------------------------------
INT 14 - MBBIOS - READ BUFFER
    AH = 0Bh
    CX = size of buffer
    ES:DI -> buffer
Return: AH = composite line status (see #0155) formed by ORing all statuses
          on receive interrupts; bit 0 set if additional characters
          available
    AL = composite modem status (see #0156) formed by ORing all statuses
    CX = number of characters actually read
    DI updated
Note:    the PACCOM version of MBBIOS does not use CX or ES:DI on call,
      instead returning ES set to the segment of the buffer containing a
      received packet, or 0000h if no packets available; the buffer may
      be freed with AH=0Ch"MBBIOS"
SeeAlso: AH=02h,AH=08h"MBBIOS",AH=0Ah"MBBIOS",AH=0Ch"MBBIOS",AH=18h"FOSSIL"
--------N-140B--DXFFFF-----------------------
INT 14 - Connection Manager - PREPARE FOR INBOUND CONNECTION
    AH = 0Bh
    DX = FFFFh
    AL = service name
        00h use parameter file or default
        01h use specified name
        ES:DI -> 16-byte blank-padded name
    BH = connection notification
        00h program awaiting connection, don't notify user
        01h notify user on connecting
    BL = connection type
        00h connection will use Connection Manager API
Return: AH = return code (00h-02h) (see #0154 at AH=00h/DX=FFFFh)
    AL = connection ID if AH=00h
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=04h/DX=FFFFh,AH=0Ch/DX=FFFFh,AH=10h/DX=FFFFh
--------S-140C-------------------------------
INT 14 - FOSSIL - NON-DESTRUCTIVE READ AHEAD
    AH = 0Ch
    DX = port number
Return: AX = FFFFh character not available
    AX = 00xxh character xx available
SeeAlso: AH=08h"MBBIOS",AH=20h"FOSSIL"
--------S-140C-------------------------------
INT 14 - MBBIOS PACCOM support - BUFFER MANAGEMENT
    AH = 0Ch
    ES = segment of buffer to free, or 0000h to allocate new buffer
Return: ES = segment of allocated buffer (if ES=0000h on entry)
Note:    the PACCOM version of MBBIOS uses only ES as buffer address for
      AH=0Ah and AH=0Bh
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
--------N-140C--DXFFFF-----------------------
INT 14 - Connection Manager - TEST FOR INBOUND CONNECTION REQUEST
    AH = 0Ch
    DX = FFFFh
    AL = connection ID from AH=0Bh/DX=FFFFh
Return: AH = return code (00h-03h) (see also #0154 at AH=00h/DX=FFFFh)
        03h not prepared for inbound connection
    AL = connection ID (if AH=00h) or correct connection ID (if AH=02h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=03h/DX=FFFFh,AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh
--------S-140D-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITHOUT WAIT
    AH = 0Dh
Return: AX = result
        FFFFh character not available
        xxyyh standard IBM-style scan code
SeeAlso: AH=0Eh
--------S-140D-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET POINTER TO CH_KEY_RDY FLAG
    AH = 0Dh
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> CH_KEY_RDY flag (see #0190)
SeeAlso: AH=0Ah"Digiboard"

(Table 0190)
Values for Digiboard CH_KEY_RDY flag:
 00h    receive buffer empty
 FFh    characters available
--------S-140D-------------------------------
INT 14 - MBBIOS PACCOM support - SET TXD
    AH = 0Dh
    AL = new setting (FFh = 1.0)
Desc:    specify the time from RTS to start or packet
SeeAlso: AX=0D00h,AH=0Eh"MBBIOS",AH=0Fh"MBBIOS"
--------N-140D--DXFFFF-----------------------
INT 14 - Connection Manager - TERMINATE CONNECTION CLIENT ACTIVITY
    AH = 0Dh
    DX = FFFFh
Return: AH = return code
        00h successful
        nonzero operation not terminated
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
Desc:    end all Connection Client TSR activity to allow it to be removed from
      memory
SeeAlso: AH=05h/DX=FFFFh,AH=6Fh/BX=FFFFh
--------S-140D00-----------------------------
INT 14 - MBBIOS - GET AVAILABLE BYTES
    AX = 0D00h
Return: AX = bytes in transmit buffer
    CX = bytes in receive buffer
SeeAlso: AH=0Ah"MBBIOS",AH=0Bh"MBBIOS"
--------S-140D01-----------------------------
INT 14 - MBBIOS - LOWER ALL MODEM CONTROL SIGNALS
    AX = 0D01h
Note:    this function lowers DTR, RTS, etc.
SeeAlso: AX=0D02h
--------S-140D02-----------------------------
INT 14 - MBBIOS - RAISE ALL MODEM CONTROL SIGNALS
    AX = 0D02h
Note:    this function raises DTR, RTS, etc.
SeeAlso: AX=0D01h
--------S-140D03-----------------------------
INT 14 - MBBIOS - SET HANDSHAKE BYTE
    AX = 0D03h
    CL = new handshake byte
Return: CL = previous handshake byte
Note:    this function lowers DTR, RTS, etc.
--------S-140E-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITH WAIT
    AH = 0Eh
Return: AX = xxyyh standard IBM-style scan code
SeeAlso: AH=0Dh"FOSSIL"
--------S-140E-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - WRITE STRING
    AH = 0Eh
    CX = number of characters to write
    ES:BX -> string
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters actually written
    ZF clear if successful
    ZF set on error
SeeAlso: AH=0Fh"Digiboard"
--------S-140E-------------------------------
INT 14 - MBBIOS PACCOM support - SET PERSISTENCE
    AH = 0Eh
    AL = new setting (FFh = 1.0)
Desc:    specify the time from end of DCD to RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
--------N-140E--DXFFFF-----------------------
INT 14 - Connection Manager - SET HARDWARE FLOW STATE
    AH = 0Eh
    DX = FFFFh
    AL = connection ID from AH=04h/DX=FFFFh
    BL = RTS state (00h off, 01h on)
Return: AH = return code (00h-03h) (see also #0154 at AH=00h/DX=FFFFh)
        03h invalid request (BL not 00h or 01h)
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=03h/DX=FFFFh,AH=0Ah/DX=FFFFh
--------S-140F-------------------------------
INT 14 - FOSSIL - ENABLE/DISABLE FLOW CONTROL
    AH = 0Fh
    AL = bit mask describing requested flow control (see #0191)
    DX = port number
SeeAlso: AH=09h"MBBIOS",AH=10h"FOSSIL"

Bitfields for FOSSIL requested flow control:
Bit(s)    Description    (Table 0191)
 0    XON/XOFF on transmit (watch for XOFF while sending)
 1    CTS/RTS (CTS on transmit/RTS on receive)
 2    reserved
 3    XON/XOFF on receive (send XOFF when buffer near full)
 4-7    all 1
--------S-140F-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - READ STRING
    AH = 0Fh
    CX = number of characters to read
    ES:BX -> buffer
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters read
    ZF clear if successful
    ZF set on error (line status or wrong number of characters)
SeeAlso: AH=0Eh"Digiboard"
--------S-140F-------------------------------
INT 14 - MBBIOS PACCOM support - SET SLOT TIME
    AH = 0Fh
    AL = new setting in clock ticks
Desc:    specify the time from end of DCD to RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Eh"MBBIOS",AH=10h"MBBIOS"
--------N-140F--DXFFFF-----------------------
INT 14 - Connection Manager - RETURN ACTIVE CONNECTION PARAMETERS
    AH = 0Fh
    DX = FFFFh
    AL = connection ID
    CX = size of buffer or 0000h to get length of returned vector
    ES:DI -> buffer for connection parameter vector (see #0162)
Return: AH = return code (00h-02h,06h) (see #0154 at AH=00h/DX=FFFFh)
    CX = number of bytes which could not be returned because the given
          buffer was too small
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
SeeAlso: AH=08h/DX=FFFFh,AH=0Ah/DX=FFFFh
--------S-1410-------------------------------
INT 14 - FOSSIL - EXTENDED ^C/^K CHECKING AND TRANSMIT ON/OFF
    AH = 10h
    AL = bit mask
        bit 0: enable/disable ^C/^K checking
        bit 1: enable/disable the transmitter
    DX = port number
SeeAlso: AH=0Fh"FOSSIL"
--------S-1410-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR RECEIVE BUFFER
    AH = 10h
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        FFh error
SeeAlso: AH=09h"Digiboard",AH=11h"Digiboard"
--------S-1410-------------------------------
INT 14 - MBBIOS PACCOM support - SET CRC WAIT
    AH = 10h
    AL = new setting in clock ticks (should be at least 5 character times)
Desc:    specify the time from start of last character to dropping RTS
SeeAlso: AH=0Dh"MBBIOS",AH=0Fh"MBBIOS"
--------N-1410--DXFFFF-----------------------
INT 14 - Connection Manager - QUERY SERVICE NAMES
    AH = 10h
    DX = FFFFh
    CL = subfunction
        00h search first
        01h search next
    ES:DI -> pattern buffer (see #0192)
Return: AH = return code (00h,01h,03h,06h) (see also #0154 at AH=00h/DX=FFFFh)
        01h no (more) matching names
        03h invalid request
    ES:DI buffer filled with reply buffer (see #0192) containing matched
          name if AH=00h
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
Desc:    obtain the names of groups and lines available for connection requests,
      and the names of active Connection Servers
SeeAlso: AH=04h/DX=FFFFh,AH=0Bh/DX=FFFFh

Format of Connection Manager pattern/reply buffer:
Offset    Size    Description    (Table 0192)
 00h    WORD    length of pattern (30h or 32h)
 02h 16 BYTEs    server pattern or name
 12h 16 BYTEs    group pattern or name
 22h 16 BYTEs    line pattern or name
 23h    BYTE    (optional) ???
 24h    BYTE    (optional, returned) current line status
        00h available
        01h out of service
        02h currently allocated to a connection
Note:    pattern may include '?' wildcard to match any character
--------S-1411-------------------------------
INT 14 - FOSSIL - SET CURRENT CURSOR LOCATION
    AH = 11h
    DH = row
    DL = column
Note:    this is the same as INT 10/AH=02h
SeeAlso: AH=12h"FOSSIL"
--------S-1411-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR TRANSMIT BUFFER
    AH = 11h
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        FFh error
SeeAlso: AH=09h"Digiboard",AH=10h"Digiboard"
--------S-1411-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DISABLE PORT
    AH = 11h
    DX = port number
Return: AL = status
        00h successful
        01h IRQ for port is shared
        02h IRQ was reserved
SeeAlso: AH=04h,AH=05h,AH=12h"PC-MOS"
--------S-1412-------------------------------
INT 14 - FOSSIL - READ CURRENT CURSOR LOCATION
    AH = 12h
Return: DH = row
    DL = column
Note:    this is the same as INT 10/AH=03h
SeeAlso: AH=11h"FOSSIL"
--------S-1412-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET TRANSMIT BUFFER FREE SPACE
    AH = 12h
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of bytes free
SeeAlso: AH=0Ah"Digiboard",AH=14h"Digiboard"
--------S-1412-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET CURRENT PORT PARAMETERS
    AH = 12h
    DX = port number
Return: AH = status
        FFh port number invalid
    AL = line parameters (see #0155)
    AH = flow control configuration (see #0187 at AH=05h"PC-MOS")
    CX:BX = bps rate
    DL = XOFF character or 00h for none
    DH = XON character or 00h for none
--------S-1413-------------------------------
INT 14 - FOSSIL - SINGLE CHARACTER ANSI WRITE TO SCREEN
    AH = 13h
    AL = character
Note:    should not be called if it is unsafe to call DOS
SeeAlso: AH=15h
--------S-1413-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - REGISTER A PORT WITH A TERMINAL
    AH = 13h
    DX = port number
Return: AH = status
        FFh port number invalid
        else
        ES:BX -> BYTE flag (00h buffer empty, FFh buffer contains data)
SeeAlso: AH=17h"PC-MOS"
--------S-1414-------------------------------
INT 14 - FOSSIL - ENABLE OR DISABLE WATCHDOG PROCESSING
    AH = 14h
    AL = 01h enable watchdog
         00h disable watchdog
    DX = port number
SeeAlso: INT 21/AH=2Bh/CX=6269h/DX=742Dh
--------S-1414-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT STRING
    AH = 14h
    CX = number of characters in string
    DX = port number
    ES:BX -> string to be sent
    SI = timeout in timer ticks or 0000h for default
Return: AX = number of bytes actually sent
    ZF clear if successful
    ZF set on timeout
SeeAlso: AH=01h,AH=15h"PC-MOS"
--------S-1414-------------------------------
INT 14 - Digiboard - GET NUMBER OF BOARDS INSTALLED
    AH = 14h
Return: AX = number of boards installed
SeeAlso: AH=08h"Digiboard",AH=15h"Digiboard"
--------S-1415-------------------------------
INT 14 - FOSSIL - WRITE CHARACTER TO SCREEN USING BIOS SUPPORT ROUTINES
    AH = 15h
    AL = character
SeeAlso: AH=13h"FOSSIL"
--------S-1415-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - INPUT STRING
    AH = 15h
    CX = size of buffer
    DX = port number
    ES:BX -> buffer for received characters
    SI = timeout in clock ticks or 0000h for default
Return: AX = number of characters actually read
    ZF set on timeout (no data available)
SeeAlso: AH=02h,AH=14h"PC-MOS",AH=16h"PC-MOS"
--------S-1415-------------------------------
INT 14 - Digiboard - ENABLE/DISABLE MEMORY
    AH = 15h
    AL = new state (00h disabled, 01h enabled)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=14h"Digiboard",AH=16h"Digiboard"
--------S-1416-------------------------------
INT 14 - FOSSIL - INSERT/DELETE FUNCTION FROM TIMER TICK CHAIN
    AH = 16h
    AL = function
        00h = delete
        01h = add
    ES:DX -> routine to call
Return: AX = status
        0000h successful
        0001h unsuccessful
SeeAlso: AH=07h"FOSSIL"
--------S-1416-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - LINK TO ANOTHER SERIAL DRIVER
    AH = 16h
    ES:BX -> calling driver's INT 14 entry point
Return: nothing
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
      operating system by The Software Link, Inc.
--------S-1416-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CCB COMMAND
    AH = 16h
    AL = CCB command number (see #0193) (see also following entries)
    BL = byte 2
    BH = byte 3
    CL = byte 1 (for all channel functions except 4Eh and 4Fh)
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AX=1646h,AH=18h"Digiboard"

(Table 0193)
Values for Digiboard CCB command number:
 40h    Set Receive Mid Water Mark
 41h    Set Receive High Water Mark
 42h    Flush Receive Buffer
 43h    Flush Transmit Buffer
 44h    Transmit Pause
 45h    Transmit Resume
 46h    Set Interrupt to Host Mask
 47h    Set Baud, Data, Stop and Parity
 48h    Send Break
 49h    Set Modem Lines
 4Ah    Set Break Count
 4Bh    Set Handshake
 4Ch    Set Xon/Xoff Characters
 4Dh    Set Transmit Mid Water Mark
 4Eh    IRQ Polling Timer to Host
 4Fh    Buffer Set All
 50h    Port On
 51h    Port Off
 52h    Receive Pause
 53h    Special Character Interrupt
 54h    RS-422 Enable
--------S-141646-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET INTERRUPT TO HOST MASK
    AX = 1646h
    BL = bits to set
    BH = bits to clear
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=1647h
--------S-141647-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET BAUD/DATABITS/STOPBITS/PARITY
    AX = 1647h
    BL = baud
    BH = datatype
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=1646h,AX=1649h
--------S-141649-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET MODEM LINES
    AX = 1649h
    BL = bits to set
    BH = bits to clear
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=1647h
--------S-14164A-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET BREAK COUNT
    AX = 164Ah
    BL = break count
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Bh
--------S-14164B-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET HANDSHAKE
    AX = 164Bh
    BL = bits to set
    BH = bits to clear
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=1649h,AX=164Ch
--------S-14164C-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET XON/XOFF CHARACTERS
    AX = 164Ch
    BL = XON character
    BH = XOFF character
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=164Bh,AX=164Dh
--------S-14164D-----------------------------
INT 14 - Digiboard - CCB COMMAND - SET TRANSMIT MID-WATER MARK
    AX = 164Dh
    BX = new mid-water mark
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=164Ch,AX=164Eh,AX=164Fh
--------S-14164E-----------------------------
INT 14 - Digiboard - CCB COMMAND - IRQ POLLING TIMER TO HOST
    AX = 164Eh
    BL = ticks
    BH = ???
    CL = mode
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=164Dh
--------S-14164F-----------------------------
INT 14 - Digiboard - CCB COMMAND - BUFFER SET ALL
    AX = 164Fh
    BL = size
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=164Dh
--------S-141653-----------------------------
INT 14 - Digiboard - CCB COMMAND - SPECIAL CHARACTER INTERRUPT
    AX = 1653h
    BL = enable/disable
    BH = special character
    CL = byte 1
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h error
        FFh error
SeeAlso: AH=16h"Digiboard",AX=1646h
--------S-1417-------------------------------
INT 14 - FOSSIL - REBOOT SYSTEM
    AH = 17h
    AL = method
        00h = cold boot
        01h = warm boot
SeeAlso: INT 19,INT 60/DI=0606h
--------S-1417-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - WRITE MODEM CONTROL REGISTER
    AH = 17h
    AL = new value for UART's modem control register
    DX = port number
Return: nothing
--------S-1418-------------------------------
INT 14 - FOSSIL - READ BLOCK
    AH = 18h
    CX = maximum number of characters to transfer
    DX = port number
    ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=19h"FOSSIL",AH=83h"COURIERS",AX=FF02h,INT 6B/AX=0100h
--------S-1418-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SEND BIOS COMMAND
    AH = 18h
    ES:BX -> 16-byte command string
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        80h timeout
    AL = mailbox status
        00h no errors
        8Xh BIOS error
    ES:BX buffer filled in with mailbox string
    ZF clear if no errors
    ZF set if either status byte contains an error code
SeeAlso: AH=16h"Digiboard"
--------S-1418-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - GET DRIVER DESCRIPTION
    AH = 18h
    DX = port number
Return: DS:BX -> 40-byte buffer containing a string identifying the serial
        driver
SeeAlso: AH=06h"PC-MOS"
--------S-1419-------------------------------
INT 14 - FOSSIL - WRITE BLOCK
    AH = 19h
    CX = maximum number of characters to transfer
    DX = port number
    ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=18h"FOSSIL",AH=86h,INT 6B/AX=0000h
--------S-1419-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SPECIAL CHARACTER INTERRUPT
    AH = 19h
    BL = flag
        00h disable special character interrupt
        FFh enable interrupt
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
        00h successful
        FFh failed
SeeAlso: AH=1Ah"Digiboard"
--------S-1419-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - SELECTIVE BUFFER FLUSH
    AH = 19h
    AL = what to flush
        bit 0: input buffer
        bit 1: output buffer
    DX = port number
Return: nothing
SeeAlso: AH=09h"PC-MOS"
--------S-141A-------------------------------
INT 14 - FOSSIL - BREAK BEGIN OR END
    AH = 1Ah
    AL = 00h stop sending 'break'
         01h start sending 'break'
    DX = port number
SeeAlso: AH=06h"FOSSIL",AH=8Ah,AH=FAh
--------S-141A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X - SPECIAL CHARACTER FLAG/COUNTER
    AH = 1Ah
    BX = subfunction
        00h return pointer to special character flag byte
        01h return pointer to special character counter word
    DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> special character flag or counter
Notes:    flag is FFh if one or more special characters are in the receive
      buffer; it is 00h and the counter is invalid if no special characters
      are in the receive buffer
    counter (if valid) contains the number of characters in the receive
      buffer up to and including the last-received special character
--------S-141B-------------------------------
INT 14 - FOSSIL - RETURN INFORMATION ABOUT THE DRIVER
    AH = 1Bh
    DX = port number
    CX = size of user buffer
    ES:DI -> user buffer for driver info (see #0194)
Return: AX = number of characters transferred
    CX = 3058h ("0X") (X00 FOSSIL only)
    DX = 2030h (" 0") (X00 FOSSIL only)

Format of FOSSIL driver info:
Offset    Size    Description    (Table 0194)
 00h    WORD    size of structure in bytes
 02h    BYTE    FOSSIL spec driver conforms to
 03h    BYTE    revision level of this specific driver
 04h    DWORD    pointer to ASCIZ identification string
 08h    WORD    size of the input buffer
 0Ah    WORD    number of bytes left in buffer
 0Ch    WORD    size of the output buffer
 0Eh    WORD    number of bytes left in buffer
 10h    BYTE    width of screen
 11h    BYTE    length of screen
 12h    BYTE    actual baud rate, computer to modem
--------S-141C-------------------------------
INT 14 - X00 FOSSIL - ACTIVATE PORT
    AH = 1Ch
    DX = port number
Return: AX = 1954h if successful
    BL = maximum function number supported (not including 7Eh and above)
    BH = revision of FOSSIL specification supported
Note:    this is a duplicate of AH=04h, so that AH=04h may be made compatible
      with the PS/2 BIOS in a future release
SeeAlso: AH=04h"FOSSIL",AH=1Dh
--------S-141D-------------------------------
INT 14 - X00 FOSSIL - DEACTIVATE PORT
    AH = 1Dh
    DX = port number
Return: none
Notes:    this is a duplicate of AH=05h, so that AH=05h may be made compatible
      with the PS/2 BIOS in a future release
    ignored if the port was never activated with AH=04h or AH=1Ch
SeeAlso: AH=05h"FOSSIL",AH=1Ch
--------S-141E-------------------------------
INT 14 - X00 FOSSIL - EXTENDED LINE CONTROL INITIALIZATION
    AH = 1Eh
    AL = break status
        00h if break
        01h if no break
    BH = parity (see #0195)
    BL = number of stop bits
        00h one stop bit
        01h two stop bits (1.5 if 5 bit word length)
    CH = word length (see #0196)
    CL = bps rate (see #0197)
    DX = port number
Return: AX = port status code (see #0155,#0156)
Notes:    this function is intended to exactly emulate the PS/2 BIOS AH=04h call
    if the port was locked at X00 load time, the appropriate parameters are
      ignored
SeeAlso: AH=00h,AH=04h"SERIAL I/O"

(Table 0195)
Values for X00 FOSSIL parity:
 00h    no parity
 01h    odd parity
 02h    even parity
 03h    stick parity odd
 04h    stick parity even

(Table 0196)
Values for X00 FOSSIL word length:
 00h    5 bits
 01h    6 bits
 02h    7 bits
 03h    8 bits

(Table 0197)
Values for X00 FOSSIL bps rate:
 00h    110
 01h    150
 02h    300
 03h    600
 04h    1200
 05h    2400
 06h    4800
 07h    9600
 08h    19200
--------S-141E------------------------------------
INT 14 - HUNTER 16 - READ COMMS PARAMETERS
    AH = 1Eh
    CX = channel number (00h COM1, 01h COM2, ...)
    DS:BX -> buffer for communications parameters (see #0198)
Return: DS:BX buffer filled
Note:    the Husky Hunter 16 is an 8088-based ruggedized laptop.     Other family
      members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AH=20h"HUNTER"

Format of HUNTER 16 communications parameters:
Offset    Size    Description    (Table 0198)
 00h    BYTE    communications type (00h IBM, nonzero Husky)
 01h    BYTE    port number (00h COM1, 01h COM2)
 02h    BYTE    baud rate (00h 110 bps, 01h 150, 02h 300, 03h 600, 04h 1200,
          05h 2400, 06h 4800, 07h 9600, 08h 19200, 09h 38400)
 03h    BYTE    data bits (01h seven, 02h eight)
 04h    BYTE    parity (00h none, 01h odd, 02h even)
 05h    BYTE    stop bits (00h one, 01h two)
 06h    BYTE    handshake (see #0199)
 07h    BYTE    handshake protocol (00h none, 01h Xon/Xoff, 02h HWK3780)
 08h    BYTE    Nulls after CR (0-20)
 09h    BYTE    LF (00h off, 01h on)
 0Ah    BYTE    Serig. 0..7Fh: Ignore this character
               80h: Serig off
 0Bh    BYTE    echo (00h off, 01h on)
 0Ch    BYTE    transmit timeout in seconds (1-60) or 00h to disable
 0Dh    BYTE    receive timeout in seconds (1-60) or 00h to disable
 0Eh  5 BYTEs    reserved

Bitfields for HUNTER 16 handshake:
Bit(s)    Description    (Table 0199)
 0-1    0: RTS off, 1: RTS hold, 2: RTS true
 2    DTR enabled
 4    CTS enabled
 5    DSR enabled
 6    DCD enabled
--------S-141F-------------------------------
INT 14 - X00 FOSSIL - EXTENDED SERIAL PORT STATUS/CONTROL
    AH = 1Fh
    AL = 00h read modem control register
          Return: BL = modem control register (see #0200)
              AH = status
    AL = 01h write modem control register
          BL = modem control register (see #0200)
          Return: AX = status
    DX = port number
Notes:    this function is intended to exactly emulate the PS/2 BIOS AH=05h call
    X00 forces BL bit 3 set (interrupts cannot be disabled)
SeeAlso: AH=00h,AH=05h"SERIAL I/O"

Bitfields for X00 FOSSIL modem control register:
Bit(s)    Description    (Table 0200)
 0    data terminal ready
 1    request to send
 2    OUT1
 3    OUT2 (interrupts) enabled
 4    LOOP
 5-7    reserved
--------S-1420-------------------------------
INT 14 - X00 FOSSIL - DESTRUCTIVE READ WITH NO WAIT
    AH = 20h
    DX = port number
Return: AH = 00h if character was available
        AL = next character (removed from receive buffer)
    AX = FFFFh if no character available
SeeAlso: AH=0Ch,AH=21h"X00"
--------S-1420-------------------------------
INT 14 - Alloy MW386 - ATTACH LOGICAL COMMUNICATIONS PORT TO PHYSICAL PORT
    AH = 20h
    AL = logical port (01h COM1, 02h COM2)
    DX = physical port number
Return: AX = status
        0000h successful
        FFFFh failed
SeeAlso: AH=21h"Alloy",AH=22h"Alloy",AH=23h"Alloy",INT 17/AH=8Bh"Alloy"
--------S-1420-------------------------------
INT 14 - MultiDOS Plus - INITIALIZE PORT
    AH = 20h
    AL = port parameters (see #0151 at AH=00h"SERIAL")
    DX = port number (0-3)
Return: AH = status
        00h successful
        41h no such port
        64h monitor mode already active
SeeAlso: AH=00h"SERIAL",AH=04h"MultiDOS",AH=21h"MultiDOS",AH=23h"MultiDOS"
--------S-1420-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - CHECK OUTPUT QUEUE
    AH = 20h
    DX = port number
Return: AX = number of bytes in output buffer
SeeAlso: AH=0Ah"PC-MOS"
--------S-1420------------------------------------
INT 14 - HUNTER 16 - SELECT COMMS PARAMETERS
    AH = 20h
    CX = channel number (00h COM1, 01h COM2, ...)
    DS:BX -> buffer with communications parameter (see #0198)
Return: AX = status
        0000h successful
        0001h invalid parameter
SeeAlso: AH=1Eh"HUNTER",AH=21h"HUNTER"
--------S-1421-------------------------------
INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER
    AH = 21h
    AL = character
    DX = port number
Notes:    the given character is inserted at the end of the receive buffer as if
      it had just arrived from the serial port; all normal receive
      processing (XON/XOFF, ^C/^K) is performed on the character
    fully re-entrant
SeeAlso: AH=20h"X00"
--------S-1421-------------------------------
INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORT
    AH = 21h
    DX = physical port number
Return: AX = status
        0000h successful
        FFFFh failed
SeeAlso: AH=20h"Alloy",AH=22h"Alloy"
--------S-1421-------------------------------
INT 14 - MultiDOS Plus - TRANSMIT CHARACTER
    AH = 21h
    AL = character to send
    DX = port number
Return: AH = status (see #0201)
Note:    monitor mode must have been turned on with AH=24h before calling
SeeAlso: AH=20h"MultiDOS",AH=22h"MultiDOS",AH=24h"MultiDOS"

(Table 0201)
Values for MultiDOS Plus status:
 00h    successful
 39h    no DSR or CTS
 3Ch    no DSR
 3Bh    no CTS
 41h    no such port
 42h    monitor mode not active
 97h    timed out
--------S-1421-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - OUTPUT CHARACTER, WITH TIMEOUT
    AH = 21h
    AL = char to send
    DX = port number
    SI = timeout in timer ticks (0000h = default)
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
      operating system by The Software Link, Inc.
SeeAlso: AH=01h,AH=0Eh"PC/MOS",AH=22h"PC-MOS"
--------S-1421------------------------------------
INT 14 - HUNTER 16 - EXTENDED CONTROL
    AH = 21h
    AL = command
        01h force transmission of buffer
        02h clear transmit buffer
        03h clear receive buffer
    DX = port (00h COM1, 01h COM2)
Return: AH = extended status
Desc:    executes the command on the selected port
SeeAlso: AH=1Eh"HUNTER",AH=20h"HUNTER",AH=22h"HUNTER",AH=24h"HUNTER"
--------S-1422-------------------------------
INT 14 - Alloy MW386 v2+ - RELEASE LOGICAL COMMUNICATIONS PORT
    AH = 22h
    AL = logical port (01h COM1, 02h COM2)
Return: AX = status (0000h successful)
SeeAlso: AH=20h"Alloy",AH=21h"Alloy"
--------S-1422-------------------------------
INT 14 - MultiDOS Plus - RECEIVE CHARACTER
    AH = 22h
    DX = port number
Return: AH = status (see also AH=21h"MultiDOS")
        00h successful
        AL = character
        3Dh framing and parity error
        3Eh overrun error
        3Fh framing error
        40h parity error
        96h ring buffer overflow
Note:    if no character is available, this function waits until a character
      arrives or an implementation-dependent timeout elapses
SeeAlso: AH=20h"MultiDOS",AH=21h"MultiDOS",AH=27h
--------S-1422-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - RECEIVE CHARACTER, WITH TIMEOUT
    AH = 22h
    DX = port number
    SI = timeout in timer ticks (0000h = default)
Return: AH = port status (see also #0155 at AH=03h)
         bit 7 = 1 indicates time-out
    AL = character received
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
      operating system by The Software Link, Inc.
SeeAlso: AH=02h,AH=0Fh"PC-MOS",AH=21h"PC-MOS"
--------S-1422------------------------------------
INT 14 - HUNTER 16 - EXTENDED STATUS
    AH = 22h
    DX = port (00h COM1, 01h COM2)
Return: AH = extended status
    BX = number of characters in input buffer
    CX = number of characters in output buffer
Desc:    returns the most recent Extended Status code for the port
SeeAlso: AH=21h"HUNTER"
--------S-1423-------------------------------
INT 14 - Alloy MW386 v2+ - GET PORT NUMBER FROM LOGICAL PORT ID
    AH = 23h
    AL = logical port (01h COM1, 02h COM2)
    DH = user ID
    DL = process ID (DH,DL both FFh for current task)
Return: AL = MW386 port mode (see #0202)
    CX = MW386 port number
    DH = owner's user ID
    DL = owner's task ID
SeeAlso: AH=20h"Alloy",INT 17/AH=8Bh"Alloy"

Bitfields for MW386 port mode:
Bit(s)    Description    (Table 0202)
 0    port is shared (spooler only)
 1    port is spooled instead of direct (spooler only)
 2    port is assigned as logical COM device, not in spooler
 3    port is free
--------S-1423-------------------------------
INT 14 - MultiDOS Plus - GET PORT STATUS
    AH = 23h
    DX = port number
Return: AH = line status (see #0155 at AH=03h)
    AL = modem status (see #0156 at AH=03h)
SeeAlso: AH=03h,AH=07h"MultiDOS",AH=20h"MultiDOS"
--------S-1423-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - DECLARE PORT OWNERSHIP
    AH = 23h
    DX = port number
    BX = TCB segment/selector address of owner task
Return: nothing
SeeAlso: AH=0Dh"PC-MOS"
--------S-1423------------------------------------
INT 14 - HUNTER 16 - CONTROL HANDSHAKE LINES
    AH = 23h
    BH = handshake line to set (00h RTS, 01h DTR)
    BL = new level (00h low, 01h high)
Desc:    sets the handshake lines of COM1 to the desired level
SeeAlso: AH=21h"HUNTER",AH=24h"HUNTER"
--------S-1424-------------------------------
INT 14 - Alloy MW386 v2+ - CHANGE PHYSICAL PORT PARAMETERS
    AH = 24h
    CX = physical I/O port number
    DS:DX -> configuration table (see #0203)
Return: AH = 00h
Note:    invalid port numbers are merely ignored
SeeAlso: INT 17/AH=96h

Format of Alloy MW386 configuration table:
Offset    Size    Description    (Table 0203)
 00h    BYTE    baud rate (see #0204)
 01h    BYTE    data bits (00h=5, 01h=6, 02h=7, 03h=8)
 02h    BYTE    parity (00h none, 01h odd, 02h even)
 03h    BYTE    stop bits (00h=1, 01h=2)
 04h    BYTE    receive flow control
        00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC, 04h RTS/CTS
 05h    BYTE    transmit flow control (as for receive)

(Table 0204)
Values for Alloy MW386 baud rate:
 00h    38400
 01h    19200
 02h    9600
 03h    7200
 04h    4800
 05h    3600
 06h    2400
 07h    2000
 08h    1200
 09h    600
 0Ah    300
 0Bh    150
 0Ch    134.5
--------S-1424-------------------------------
INT 14 - MultiDOS Plus - SET MONITOR MODE
    AH = 24h
    AL = port status storage
        00h single status for entire receive buffer
        01h separate status kept for each byte in receive buffer
    DX = port number
Return: AH = status
        00h successful
        3Ah invalid status storage specified
        41h no such port
        64h monitor mode already active
Note:    in monitor mode, MultiDOS redirects all BIOS video output to a serial
      port
SeeAlso: AH=20h"MultiDOS",AH=25h
--------S-1424-------------------------------
INT 14 - PC-MOS/386 v5.01 $serial.sys v5.04 - ???
    AH = 24h
Return: ???
Program: PC-MOS/386 v5.01 is a multitasking, multiuser MS-DOS 5.0-compatible
      operating system by The Software Link, Inc.
--------S-1424------------------------------------
INT 14 - HUNTER 16 - CONTROL CTS HANDSHAKING
    AH = 24h
    AL = new CTS handshake state for COM1 (00h disabled, 01h enabled)
SeeAlso: AH=23h"HUNTER",AH=25h"HUNTER",AH=26h"HUNTER"
--------S-1425-------------------------------
INT 14 - MultiDOS Plus - CLEAR BUFFERS
    AH = 25h
    AL = function
        00h only clear buffers
        01h clear buffers and deactivate
    DX = port number
Return: AH = status
        00h successful
        3Ah invalid function
        41h no such port
        42h monitor mode not active
SeeAlso: AH=20h"MultiDOS",AH=24h"MultiDOS"
--------S-1425------------------------------------
INT 14 - HUNTER 16 - CONTROL RS232 DRIVERS
    AH = 25h
    AL = new state of RS232 drivers (00h off, 01h on)
Note:    this function can be used to save power by turning off the RS232
      drivers.  It can also be used to turn on the RS232 drivers before
      connecting to a remote system to avoid "garbage" while the drivers
      turn on.
SeeAlso: AH=23h"HUNTER",AH=24h"HUNTER",AH=26h"HUNTER"
--------S-1426------------------------------------
INT 14 - HUNTER 16 - CONTROL RI POWER UP
    AH = 26h
    AL = 00h enable RI power up
        else disable RI power up
Desc:    control whether the Ring Indicator handshake can power up the Hunter
--------S-1427-------------------------------
INT 14 - MultiDOS Plus - GET BUFFER CHARACTER COUNT
    AH = 27h
    DX = port number
Return: AH = status
        00h successful
        41h no such port
        42h monitor mode not active
    AL = number of characters in receive buffer
--------S-1427------------------------------------
INT 14 - HUNTER 16 - GET INSTALLED PROTOCOLS COUNT
    AH = 27h
    AL = number of extended protocols installed (since last call)
Return: AL = total number installed, including new ones
Desc:    Returns the number of extended communication protocols installed
SeeAlso: AH=25h"HUNTER",AH=28h"HUNTER"
--------S-1428------------------------------------
INT 14 - HUNTER 16 - GET PROTOCOL NAME
    AH = 28h
    AL = protocol handle
    DS:BX -> 8 character buffer for protocol name
Return:    AH = status
        00h successful
        DS:BX buffer filled with the protocol name
        FFh failed
SeeAlso: AH=27h"HUNTER",AH=29h"HUNTER"
--------S-1429------------------------------------
INT 14 - HUNTER 16 - GET PROTOCOL HANDLE
    AH = 29h
    DS:BX -> buffer containing the protocol name
Return: AH = status
        00h successful
        AL = handle
        FFh failed
SeeAlso: AH=28h"HUNTER",AH=2Ah"HUNTER"
--------S-142A------------------------------------
INT 14 - HUNTER 16 - EXTENDED PROTOCOL MENU
    AH = 2Ah
    AL = protocol handle
Return: AH = status
        00h successful
        FFh failed
    AL = menu handle
SeeAlso: AH=29h"HUNTER",AH=2Bh"HUNTER"
--------S-142B------------------------------------
INT 14 - HUNTER 16 - GET EXTENDED PROTOCOL PARAMETERS
    AH = 2Bh
    AL = protocol handle
    DS:BX -> buffer for extended protocol parameters
Return: AH = status
        00h successful
        DS:BX buffer filled with extended parameters
        FFh failed
SeeAlso: AH=2Ah"HUNTER"
--------S-142C00----------------------------------
INT 14 - HUNTER 16 - GET DTR
    AX = 2C00h
Return: AH = 00h
    BL = current state
        00h     normal DTR operation
        else DTR is forced high
Desc:    Indicates whether the DTR signal on COM1 is forced high
Note:    the Husky Hunter 16 is an 8088-based ruggedized laptop.     Other family
      members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AH=2Ch"SET DTR"
--------S-142C------------------------------------
INT 14 - HUNTER 16 - SET DTR
    AH = 2Ch
    AL nonzero
    BL = new state
        00h     normal operation
        else force DTR high
Return: AH = 00h
Desc:    determine whether the DTR signal on COM1 should be forced high
SeeAlso: AX=2C00h
--------S-1456-------------------------------
INT 14 U - BWCOM14 - INSTALLATION CHECK
    AH = 56h
Return: CX = 0001h if installed
Program: BWCOM14 is a network serial port emulator (simulating a Hayes modem
      connected to the serial port) distributed as part of the
      Beame&Whiteside BW-NFS package
SeeAlso: AH=57h,AH=58h
--------S-1457-------------------------------
INT 14 U - BWCOM14 - INITIALIZE
    AH = 57h
    DL = port number
Return: AL = initialization status (00h successful, 01h already initialized)
    CX = port status (0001h port redirected, 0002h and FFFFh failed)
Note:    after this call, all invocations of INT 14/AH=00h-03h for the specified
      port will be handled by BWCOM14 until AH=58h is called
SeeAlso: AH=00h"SERIAL",AH=56h,AH=58h
--------S-1458-------------------------------
INT 14 U - BWCOM14 - SHUTDOWN
    AH = 58h
Return: CX = status (0001h successful, 0002h not initialized)
Note:    after this call, BWCOM14 will no longer redirect the COM port
SeeAlso: AH=56h,AH=57h
--------N-146F--BXFFFE-----------------------
INT 14 U - Connection Manager - ???
    AH = 6Fh
    BX = FFFEh
    ???
Return: ???
Program: Connection Manager by Softwarehouse Corp. permits the sharing of
      serial ports over an IPX or NetBIOS-based network
--------N-146F--BXFFFF-----------------------
INT 14 - Connection Manager - INSTALLATION CHECK
    AH = 6Fh
    BX = FFFFh
Return: DX:BX -> Connection Manager Communication Table if installed
    BX = FFFFh if not installed
SeeAlso: AH=0Dh/DX=FFFFh
--------S-147E-------------------------------
INT 14 - FOSSIL - INSTALL AN EXTERNAL APPLICATION FUNCTION
    AH = 7Eh
    AL = code assigned to external application (80h-BFh)
        80h reserved for communications FOSSIL
        81h video FOSSIL
        82h reserved for keyboard FOSSIL
        83h reserved for system FOSSIL
    ES:DX -> entry point
Return: AX = 1954h
    BL = code assigned to application (same as input AL)
    DH = 00h failed
         01h successful
SeeAlso: AH=7Fh,AH=80h"FOSSIL",AX=8100h,AH=82h"FOSSIL",AH=83h"FOSSIL"
--------S-147F-------------------------------
INT 14 - FOSSIL - REMOVE AN EXTERNAL APPLICATION FUNCTION
    AH = 7Fh
    AL = code assigned to external application
    ES:DX -> entry point
Return: AX = 1954h
    BL = code assigned to application (same as input AL)
    DH = 00h failed
         01h successful
SeeAlso: AH=7Eh
--------S-1480-------------------------------
INT 14 - COMMUNICATIONS FOSSIL
    AH = 80h
SeeAlso: AH=7Eh
--------S-1480-------------------------------
INT 14 - COURIERS.COM - INSTALLATION CHECK
    AH = 80h
Return: AH = E8h if loaded
Program: COURIERS is a TSR utility by PC Magazine
--------S-148000-----------------------------
INT 14 - ARTICOM - INSTALLATION CHECK
    AX = 8000h
Return: AL = FFh if installed
        BH = major version
        BL = minor version
Program: ArtiCom is an asynchronous communications driver by Artisoft which
      works on top of NetBIOS and allows modem/serial-port sharing by
      programs using INT 14 for serial I/O.
Note:    ArtiCom supports 32 simultaneous COM ports using multiport cards and
      drivers
SeeAlso: AH=00h,AH=01h,AH=02h,AH=03h,AH=04h,AH=05h,AX=8001h,AX=8002h
--------S-148000-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET ERROR CODE AND BUFFER STATUS
    AX = 8000h
    DX = port number
Return: AX = code for last error (see #0205)
    BX = number of characters in output buffer
    CX = nubmer of characters in input buffer
    DX = state flag (see #0206)
Program: COMM-DRV is a universal serial communications driver by Willies'
      Computer Software Company, which supports standard INT 14 and
      FOSSIL calls as well as its own interfaces
SeeAlso: AX=8001h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"

(Table 0205)
Values for COMM-DRV error code:
 00h    no error
 01h    buffer not set or attempted to change buffer for active port
 02h    port not active
 03h    transmit buffer full
 04h    receive buffer full
 05h    syntax error
 06h    invalid buffer size
 07h    invalid port
 08h    handler changed
 09h    invalid baud rate
 0Ah    invalid parity setting
 0Bh    invalid data length
 0Ch    invalid number of stop bits
 0Dh    invalid protocol number
 0Eh    IRQ changed
 0Fh    port changged
 10h    invalid threshold setting
 11h    invalid IRQ number
 12h    interrupts not enabled
 13h    invalid break syntax
 14h    fatal error
 15h    CTS error
 16h    invalid RS232 I/O port address
 17h    environment variable not set
 18h    error on IOCTL call
 19h    error during atexit cleanup
 1Ah    error mapping for direct calls
 1Bh    error opening device
 1Ch    unable to allocate memory
 1Dh    error on external micro card
 1Eh    card changed error
 1Fh    card type error
 20h    not supported
 21h    parent port error
 22h    card command buffer full
 23h    no subdevice for this port
 24h    unknown error
 25h    external card busy
 26h    no more timers available
 27h    INT 14 vector changed
 28h    INT 08 vector changed
 29h    DPMI error
 2Ah    TSR buffer too small (or nonexistent)
 2Bh    out of asynchronous resources
 2Ch    out of timer resources
 2Dh    out of "other" timer resources
 2Eh    file I/O error
 2Fh    hardware memory > 64K

Bitfields for state flag :
Bit(s)    Description    (Table 0206)
 0    port is active
 1    output throttled (XOFF received, or DSR or CTS reset)
 2    input throttled (XOFF sent, or DTR or RTS reset)
--------S-148001-----------------------------
INT 14 - ARTICOM - UNLOAD ASYNCHRONOUS REDIRECTOR FROM MEMORY
    AX = 8001h
Return: AX = error code, if error (see #0208)
SeeAlso: AX=8000h"ARTICOM",AX=8002h"ARTICOM",AX=8003h"ARTICOM"
Index:    uninstall;ARTICOM
--------S-148001-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
    AX = 8001h
    DX = port number
Return: BX:DI -> Port Control Block (see #0215)
SeeAlso: AX=8000h"COMM-DRV",AX=8002h"COMM-DRV",AX=8003h"COMM-DRV"
--------S-148002-----------------------------
INT 14 - ARTICOM - GET ASYNCHRONOUS REDIRECTOR STATUS
    AX = 8002h
    ES:DI -> buffer for redirector status structure (see #0207)
Return: AX = error code, if error (see #0208)
SeeAlso: AX=8000h"ARTICOM",AX=8003h"ARTICOM"

Format of ARTICOM redirector status:
Offset    Size    Description    (Table 0207)
 00h    WORD    redirector major and minor version numbers
 02h    WORD    redirectable ports found
 04h    WORD    redirectable ports + local ports found
 06h    WORD    redirector internal buffer size
 08h    WORD    maximum servers maintained
 0Ah    WORD    number of adapters found
--------S-148002-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET PORT PARAMETERS
    AX = 8002h
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
        BX:DI -> Port Control Block (see #0215) (modifyable portion only)
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8003h"COMM-DRV"
--------S-148003-----------------------------
INT 14 - ARTICOM - TRANSLATE ERROR CODE TO ERROR STRING
    AX = 8003h
    CX = error number to translate (see #0208)
Return: ES:DI -> ASCIZ error text or 0000h:0000h if unable to translate
SeeAlso: AX=8000h

(Table 0208)
Values for ARTICOM error codes:
 00h    "No error"
 01h    "An invalid port number was specified"
 02h    "Port is already redirected"
 03h    "Too many ports redirected"
 04h    "Cannot locate the server"
 05h    "Server is busy"
 06h    "Access denied"
 07h    "Resource in use"
 08h    "Resource in use - request queued"
 09h    "No such resource"
 0Ah    "Invalid username/password pair"
 0Bh    "Noncompatible version number"
 0Ch    "Can't remove from memory"
 0Dh    "Bad NETBIOS adapter number"
 0Eh    "No more entries in list"
 0Fh    "Resource is not available at this time"
 10h    "Invalid value to INT 14 call"
--------S-148003-----------------------------
INT 14 - COMM-DRV v14.0 - READ PORT METRICS - GET I/O BUFFER SIZES
    AX = 8003h
    DX = port number
Return: AX = number of characters in input buffer
    BX = input buffer size
    CX = number of characters in output buffer
    DX = output buffer size
SeeAlso: AX=8000h"COMM-DRV",AX=8001h"COMM-DRV",AX=8002h"COMM-DRV"
--------S-148004-----------------------------
INT 14 - ARTICOM - ATTACH ASYNCHRONOUS RESOURCE
    AX = 8004h
    DX = port to redirect (COM1=0, COM2=1, ...)
    CH = attach type
    CL = adapter to use for attach, 0FFh to search all
    ES:DI -> attachment structure (see #0209)
Return: AX = error code, if error (see #0208)
Note:    The wildcard '*' is supported in the server and resource fields.  If
      wild cards are used then the first matching available server is
      attached.
SeeAlso: AX=8000h,AX=8003h,AX=8005h

Format of ARTICOM attachment structure:
Offset    Size    Description    (Table 0209)
 00h 16 BYTEs    server to look for attach
 10h 16 BYTEs    attach to resource name
 20h 16 BYTEs    username for attach
 30h 16 BYTEs    password for username or resource
 40h    BYTE    attach type
        00h normal
        01h queue if resource is in use (not yet supported in v1.00)
--------S-148005-----------------------------
INT 14 - ARTICOM - DETACH ASYNCHRONOUS RESOURCE
    AX = 8005h
    DX = port to detach (COM1=0, COM2=1, ...)
Return: AX = error code, if error (see #0208)
Note:    only a previously attached resource can be detached
SeeAlso: AX=8000h,AX=8003h,AX=8004h
--------S-148006-----------------------------
INT 14 - ARTICOM - GET RESOURCE INFORMATION
    AX = 8006h
    BX = remote port (COM1=0, COM2=1, ...)
    CL = adapter number, FFh to try all adapters
    ES:DI -> resource information structure (see #0210)
    DS:SI -> 16 byte server name. See note.
Return: AX = error code, if error (see #0208)
    BX = next remote port, recall to get next resource info
Note:    Wild cards supported in both the resource field and server name
      string DS:SI. If wild cards used then first matching available
      resource information is searched. Set the resource field to FFh to
      return all resources.
SeeAlso: AX=8000h,AX=8002h,AX=8003h,AX=8007h

Format of ARTICOM resource information structure:
Offset    Size    Description    (Table 0210)
 00h    BYTE    00h = free, else used
 01h 16 BYTEs    resource name
 11h 16 BYTEs    username of resource user
 21h    WORD    amount of time used
 23h    WORD    amount of time remaining
 53h 48 BYTEs    description of resource
 93h 64 BYTEs    initialization string for modem
 B3h 32 BYTEs    dial string for modem
 D3h 32 BYTEs    hang-up string for modem
--------S-148007-----------------------------
INT 14 - ARTICOM - GET REDIRECTED PORT INFORMATION
    AX = 8007h
    DX = port index (COM1=0, COM2=1, ...)
    ES:DI -> buffer for port information structure (see #0211)
Return: CF clear if redirection info returned and port is redirected
    CF set if not a redirected port
    AX = error code, if error (see #0208)
SeeAlso: AX=8000h,AX=8003h,AX=8006h,AX=8008h

Format of ARTICOM port information structure:
Offset    Size    Description    (Table 0211)
 00h 16 BYTEs    server name resource is on
 10h    BYTE    adapter number server is on
 11h 16 BYTEs    resource name
 21h    WORD    remote port index, use to get additional information
 23h    WORD    buffer size
 25h    WORD    baud rate (see #0212)
 26h    BYTE    modem status register
 27h    BYTE    modem control register
 28h    BYTE    line status register
 29h    BYTE    line control register
 2Ah    BYTE    flow control in use: 0 - NONE, 1 - XON/XOFF, 2 - RTS/CTS
 2Bh    WORD    send timeout in ticks
 2Dh    WORD    receive timeout in ticks
 2Fh    WORD    time used on remote port
 31h    WORD    time left before timeout
 33h    BYTE    if server changes allowed?
 34h    WORD    FFFFh (-1) if connection ok, else old port index

(Table 0212)
Values for ARTICOM baud rate:
 00h    110
 01h    150
 02h    300
 03h    600
 04h    1200
 05h    2400
 06h    4800
 07h    9600
 08h    19200
 09h    38400
 0Ah    57600
 0Bh    115200
 0Ch    134.5
 0Dh    1800
 0Eh    2000
 0Fh    3600
 10h    7200
--------S-148008-----------------------------
INT 14 - ARTICOM - GET AVAILABLE SERVER NAME
    AX = 8008h
    BX = server index (0,1,...)
    ES:DI -> server name structure (see #0213)
Return: AX = error code, if error (see #0208)
    BX = next remote port, repeat call to get next available server
Note:    the wildcard '*' is supported in the server name field.     Set the
      server name to FFh to search for all servers.
SeeAlso: AX=8000h,AX=8003h,AX=8007h

Format of ARTICOM server name structure:
Offset     Size      Description    (Table 0213)
  00h 16 BYTEs      (call) ASCIZ server name
  10h     BYTE      (return) the adapter server is found
--------S-148009-----------------------------
INT 14 - ARTICOM - SET SEND AND RECEIVE TIMEOUTS
    AX = 8009h
    BX = send timeout in ticks
    CX = receive timeout in ticks
    DX = port index (COM1=0, COM2=1, ...)
Return: nothing
SeeAlso: AX=8000h,AX=800Ah
--------S-14800A-----------------------------
INT 14 - ARTICOM - MODIFY FLOW CONTROL
    AX = 800Ah
    BL = flow control type (00h none, 01h XON/XOFF, 02h RTS/CTS)
    DX = port index (COM1=0, COM2=1, ...)
Return: AX = error code, if error (see #0208)
Note:    for attached ports only!
SeeAlso: AX=8000h,AX=8003h,AX=8009h
--------S-148025-----------------------------
INT 14 - ARTICOM - SET INTERNAL SEND/RECEIVE VECTOR
    AX = 8025h
    DS:DX -> address of trap function (see #0214) to call on read/write
Note:    setting the vector to a user function allows the redirector's activity
      to be monitored.
SeeAlso: AX=8000h,AX=8035h,INT 21/AH=25h

(Table 0214)
Values ARTICOM trap function is called with:
    AH = operation
        80h reading character
        81h writing character
    AL = character
Return: AX must be preserved
    far JUMP to old trap function (see AX=8035h)
--------S-148035-----------------------------
INT 14 - ARTICOM - GET INTERNAL SEND/RECEIVE VECTOR
    AX = 8035h
Return: ES:BX -> address of current send/receive routine
Note:    this function returns the address of the routine which is called
      inside A-REDIR.EXE each time a character is received or sent on the
      active COM port.
SeeAlso: AX=8000h,AX=8025h,INT 21/AH=35h
--------S-1481-------------------------------
INT 14 - COURIERS.COM - CHECK IF PORT BUSY
    AH = 81h
    AL = port number (1-4)
Return: AH = 00h port available
         01h port exists but already in use
         02h port nonexistent
Program: COURIERS is a TSR utility by PC Magazine
SeeAlso: AH=83h,AH=8Dh
--------S-1481-------------------------------
INT 14 - COMM-DRV - EXTENDED INITIALIZATION
    AH = 81h
    BX:DI -> port control block (see #0215)
    DX = port number
Return: AH = line status register (see #0155)
        error if bit 7 set
    AL = modem status register (see #0156)
Program: COMM-DRV is a universal serial communications driver by Willies'
      Computer Software Company, which supports standard INT 14 and
      FOSSIL calls as well as its own interfaces
SeeAlso: AH=00h,AH=82h"COMM-DRV",AH=86h"COMM-DRV"
!!!
Format of COMM-DRV port control block:
Offset    Type    Description    (Table 0215)
 00h    WORD    port IO address
 02h    WORD    port IRQ
 04h    WORD    baud rate
 06h    WORD    parity
 08h    WORD    data bits
 0Ah    WORD    stop bits
 0Ch    WORD    break status (0000h off)
 0Eh    WORD    flow control protocol
 10h    BYTE    input block
 11h    BYTE    output block
 12h    WORD    low threshold
 14h    WORD    high threshold
 16h    WORD    segment of buffer
 18h    WORD    offset of buffer
 1Ah    WORD    input buffer length
 1Ch    WORD    output buffer length
 1Eh    BYTE    auxiliary address
 1Fh    BYTE    spare
 20h  4 WORDs    spares
--------V-148100-----------------------------
INT 14 - VIDEO FOSSIL - RETURN VFOSSIL INFORMATION
    AX = 8100h
    ES:DI -> buffer for VFOSSIL information (see #0216)
Return: AX = 1954h if installed
SeeAlso: AH=7Eh,AX=8101h

Format of VFOSSIL information:
Offset    Size    Description    (Table 0216)
 00h    WORD    size of information in bytes, including this field
 02h    WORD    VFOSSIL major version
 04h    WORD    VFOSSIL revision level
 06h    WORD    highest VFOSSIL application function supported
--------V-148101-----------------------------
INT 14 - VIDEO FOSSIL - OPEN VFOSSIL
    AX = 8101h
    ES:DI -> buffer for application function table (see #0217)
    CX = length of buffer in bytes
Return: AX = 1954h if installed
        BH = highest VFOSSIL application function supported
Note:    the number of initialized pointers in the application function table
      will never exceed CX/4; if the buffer is large enough, BH+1 pointers
      will be initialized
SeeAlso: AX=8102h

Format of VFOSSIL application function table:
Offset    Size    Description    (Table 0217)
 00h    DWORD    -> function to query current video mode (VioGetMode)(see #0222)
 04h    DWORD    -> function to set video mode (VioSetMode) (see #0223)
 08h    DWORD    -> function to query hardware config (VioGetConfig) (see #0224)
 0Ch    DWORD    -> function to write data in TTY mode (VioWrtTTY) (see #0225)
 10h    DWORD    -> function to get current ANSI state (VioGetANSI) (see #0226)
 14h    DWORD    -> function to set new ANSI state (VioSetANSI) (see #0227)
 18h    DWORD    -> function to get curr cursor position (VioGetCurPos)
 1Ch    DWORD    -> function to set cursor position (VioSetCurPos) (see #0229)
 20h    DWORD    -> function to get cursor shape (VioGetCurType) (see #0230)
 24h    DWORD    -> function to set cursor shape (VioSetCurType) (see #0231)
 28h    DWORD    -> function to scroll screen up (VioScrollUp) (see #0232)
 2Ch    DWORD    -> function to scroll screen down (VioScrollDn) (see #0233)
 30h    DWORD    -> function to read cell string from screen (VioReadCellStr)
 34h    DWORD    -> function to read char string from screen (VioReadCharStr)
 38h    DWORD    -> function to write a cell string (VioWrtCellStr)
 3Ch    DWORD    -> function to write char string, leaving attr (VioWrtCharStr)
 40h    DWORD    -> function to write char string,const attr (VioWrtCharStrAttr)
 44h    DWORD    -> function to replicate an attribute (VioWrtNAttr)
 48h    DWORD    -> function to replicate a cell (VioWrtNCell)
 4Ch    DWORD    -> function to replicate a character (VioWrtNChar)

Format of VFOSSIL video mode data structure:
Offset    Size    Description    (Table 0218)
 00h    WORD    length of structure including this field
 02h    BYTE    mode characteristics
        bit 0: clear if MDA, set otherwise
        bit 1: graphics mode
        bit 2: color disabled (black-and-white)
 03h    BYTE    number of colors supported (1=2 colors, 4=16 colors, etc)
 04h    WORD    number of text columns
 06h    WORD    number of text rows
 08h    WORD    reserved
 0Ah    WORD    reserved
 0Ch    DWORD    reserved

Format of VFOSSIL video configuration data:
Offset    Size    Description    (Table 0219)
 00h    WORD    structure length including this field
 02h    WORD    adapter type
        00h monochrome/printer
        01h CGA
        02h EGA
        03h VGA
        07h 8514/A
 04h    WORD    display type
        00h monochrome
        01h color
        02h enhanced color
        09h 8514
 06h    DWORD    adapter memory size

Format of VFOSSIL cursor type record:
Offset    Size    Description    (Table 0220)
 00h    WORD    cursor start line
 02h    WORD    cursor end line
 04h    WORD    cursor width (always 01h)
 06h    WORD    cursor attribute (FFFFh = hidden)

(Table 0221)
Values for VFOSSIL error code:
 0000h    successful
 0074h    internal VIO failure
 0163h    unsupported mode
 0166h    invalid row value
 0167h    invalid column value
 017Eh    buffer too small
 01A5h    invalid VIO parameter
 01B4h    invalid VIO handle

(Table 0222)
Call VioGetMode with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to video mode data structure (see #0218)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #0221)
SeeAlso: #0223

(Table 0223)
Call VioSetMode with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to video mode data structure (see #0218)
Return: AX = error code (00h, 74h, 163h, 17Eh, 1A5h, 1B4h) (see #0221)
SeeAlso: #0222

(Table 0224)
Call VioGetConfig with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to video configuration data buffer (see #0219)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see #0221)

(Table 0225)
Call VioWrtTTY with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    length of string
        DWORD    pointer to character string to be written to screen
Return: AX = error code (00h, 74h, 1B4h) (see #0221)
Notes:    write wraps at end of line and terminates if it reaches end of screen
    in ANSI mode, ANSI control sequences are interpreted, and this func is
      not required to be reentrant; in non-ANSI mode, the function is
      reentrant and may be called from within an MS-DOS function call

(Table 0226)
Call VioGetANSI with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to WORD which will be set to 00h if ANSI is off
            or 01h if ANSI is on
Return: AX = error code (00h, 74h, 1B4h) (see #0221)
SeeAlso: #0227

(Table 0227)
Call VioSetANSI with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to WORD indicating new state of ANSI
            00h off, 01h on
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #0221)
SeeAlso: #0226

(Table 0228)
Call VioGetCurPos with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to WORD to hold current cursor column (0-based)
        DWORD    pointer to WORD to hold current cursor row (0-based)
Return: AX = error code (00h, 74h, 1B4h) (see #0221)
SeeAlso: #0229

(Table 0229)
Call VioSetCurPos with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    cursor column
        WORD    cursor row
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    if either coordinate is invalid, the cursor is not moved
SeeAlso: #0228

(Table 0230)
Call VioGetCurType with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to cursor type record (see #0220)
Return: AX = error code (00h, 74h, 1B4h) (see #0221)
SeeAlso: #0231

(Table 0231)
Call VioSetCurType with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to cursor type record (see #0220)
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see #0221)
SeeAlso: #0232

(Table 0232)
Call VioScrollUp with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to char/attr cell for filling emptied rows
        WORD    number or rows to scroll (FFFFh = clear area)
        WORD    right column of scroll area
        WORD    bottom row of scroll area
        WORD    left column of scroll area
        WORD    top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
SeeAlso: #0233,INT 10/AH=06h

(Table 0233)
Call VioScrollDn with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to char/attr cell for filling emptied rows
        WORD    number or rows to scroll (FFFFh = clear area)
        WORD    right column of scroll area
        WORD    bottom row of scroll area
        WORD    left column of scroll area
        WORD    top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
SeeAlso: #0232,INT 10/AH=07h

(Table 0234)
Call VioReadCellStr with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start reading
        WORD    row at which to start reading
        DWORD    pointer to WORD containing length of buffer in bytes
            on return, WORD contains number of bytes actually read
        DWORD    pointer to buffer for cell string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #0221)

(Table 0235)
Call VioReadCharStr with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start reading
        WORD    row at which to start reading
        DWORD    pointer to WORD containing length of buffer in bytes
            on return, WORD contains number of bytes actually read
        DWORD    pointer to buffer for character string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see #0221)

(Table 0236)
Call VioWrtCellStr with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start writing
        WORD    row at which to start writing
        WORD    length of cell string in bytes
        DWORD    pointer to cell string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    write wraps at end of line and terminates if it reaches end of screen

(Table 0237)
Call VioWrtCharStr with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start writing
        WORD    row at which to start writing
        WORD    length of character string
        DWORD    pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    write wraps at end of line and terminates if it reaches end of screen

(Table 0238)
Call VioWrtCharStrAttr with:
    STACK:    WORD    VIO handle (must be 00h)
        DWORD    pointer to attribute to be applied to each character
        WORD    column at which to start writing
        WORD    row at which to start writing
        WORD    length of character string
        DWORD    pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    write wraps at end of line and terminates if it reaches end of screen

(Table 0239)
Call VioWrtNAttr with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start writing
        WORD    row at which to start writing
        WORD    number of times to write attribute
        DWORD    pointer to display attribute to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    write wraps at end of line and terminates if it reaches end of screen

(Table 0240)
Call VioWrtNCell with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start writing
        WORD    row at which to start writing
        WORD    number of times to write cell
        DWORD    pointer to cell to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    write wraps at end of line and terminates if it reaches end of screen

(Table 0241)
Call VioWrtNChar with:
    STACK:    WORD    VIO handle (must be 00h)
        WORD    column at which to start writing
        WORD    row at which to start writing
        WORD    number of times to write character
        DWORD    pointer to character to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see #0221)
Note:    write wraps at end of line and terminates if it reaches end of screen
--------V-148102-----------------------------
INT 14 - VIDEO FOSSIL - CLOSE VFOSSIL
    AX = 8102h
Return: AX = 1954h
Note:    terminates all operations; after this call, the video FOSSIL may either
      be removed from memory or reinitialized
SeeAlso: AX=8101h,AX=8103h
--------V-148103-----------------------------
INT 14 - VIDEO FOSSIL - UNINSTALL
    AX = 8103h
Return: AX = 1954h
Note:    this is an extension to the VFOSSIL spec by Bob Hartman's VFOS_IBM
--------K-1482-------------------------------
INT 14 - KEYBOARD FOSSIL
    AH = 82h
SeeAlso: AH=7Eh
--------S-1482-------------------------------
INT 14 - COURIERS.COM - CONFIGURE PORT
    AH = 82h
    AL = port number (1-4)
    BX = speed (bps)
    CX = bit flags
        bit 0: enable input flow control
        bit 1: enable output flow control
        bit 2: use X.PC protocol (not yet implemented)
SeeAlso: AH=00h,AH=8Ch,INT 7A"X.PC"
--------S-1482-------------------------------
INT 14 - COMM-DRV v14.0 - PORT CLEANUP
    AH = 82h
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
Desc:    reset the port to its state before the AH=81h initialization and unhook
      any interrupts used by the port
SeeAlso: AH=81h"COMM-DRV",AH=83h"COMM-DRV"
----------1483-------------------------------
INT 14 - SYSTEM FOSSIL
    AH = 83h
SeeAlso: AH=7Eh
--------S-1483-------------------------------
INT 14 - COURIERS.COM - START INPUT
    AH = 83h
    ES:BX -> circular input buffer
    CX = length of buffer
        (should be at least 128 bytes if input flow control enabled)
SeeAlso: AH=18h,AH=87h,AH=8Dh,AH=A5h"BAPI"
--------S-1483-------------------------------
INT 14 - COMM-DRV v14.0 - FLUSH COMMUNICATION BUFFERS
    AH = 83h
    DX = port number
    AL = subfunction
        00h flush input buffer
        01h flush output buffer
        02h flush both buffers
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AH=81h"COMM-DRV",AH=84h"COMM-DRV"
--------S-1484-------------------------------
INT 14 - COURIERS.COM - READ CHARACTER
    AH = 84h
Return: ZF set if no characters available
    ZF clear
       AL = character
       AH = modem status bits
        bit 7: set on input buffer overflow
SeeAlso: AH=02h,AH=86h,AH=89h
--------S-1484-------------------------------
INT 14 - COMM-DRV v14.0 - SEND PACKET
    AH = 84h
    CX = packet length in bytes
    DX = port number
    ES:DI -> packet to be sent
Return: AH = line status (see #0155)
        bit 7 set on error
    AL destroyed
SeeAlso: AH=83h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
--------S-1485-------------------------------
INT 14 - COURIERS.COM - FLUSH PENDING INPUT
    AH = 85h
SeeAlso: AH=0Ah,AH=88h"COURIERS"
--------S-1485-------------------------------
INT 14 - COMM-DRV v14.0 - RECEIVE PACKET
    AH = 85h
    CX = length of packet in bytes
    DX = port number
    ES:DI -> buffer for packet
Return: AH = line status (see #0155)
        bit 7 set on error
    AL destroyed
Note:    this call requires that at least the requested number of bytes are
      already present in the input buffer, and will fail if there are
      fewer bytes available
SeeAlso: AH=84h"COMM-DRV",AH=86h"COMM-DRV",AH=8Eh"COMM-DRV"
--------S-1486-------------------------------
INT 14 - COURIERS.COM - START OUTPUT
    AH = 86h
    ES:BX -> output buffer
    CX = length of output buffer
SeeAlso: AH=19h,AH=83h"COURIERS",AH=A4h"BAPI"
--------S-1486-------------------------------
INT 14 - COMM-DRV v14.0 - SET INPUT/OUTPUT TIMEOUTS
    AH = 86h
    BL = maximum clock ticks to wait before signalling error on input func
    BH = maximum clock ticks to wait before signalling error on output
    DX = port number
    SI = input timeout in clock ticks if BL=FFh and BH=FFh
    DI = output timeout in clock ticks if BL=FFh and BH=FFh
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AH=01h,AH=02h,AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=8Eh"COMM-DRV"
--------S-1487-------------------------------
INT 14 - COURIERS.COM - OUTPUT STATUS
    AH = 87h
Return: AX = number of unsent characters
SeeAlso: AX=88h"COURIERS"
--------S-1487-------------------------------
INT 14 - COMM-DRV v14.0 - TURN ON DTR
    AH = 87h
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
--------S-1488-------------------------------
INT 14 - COURIERS.COM - ABORT OUTPUT
    AH = 88h
SeeAlso: AH=09h,AH=85h"COURIERS"
--------S-1488-------------------------------
INT 14 - COMM-DRV v14.0 - TURN OFF DTR
    AH = 88h
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
Program: COMM-DRV is a universal serial communications driver by Willies'
      Computer Software Company, which supports standard INT 14 and
      FOSSIL calls as well as its own interfaces
SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
--------S-1489-------------------------------
INT 14 - COURIERS.COM - SEND SINGLE CHARACTER
    AH = 89h
    CL = character to send
SeeAlso: AH=01h,AH=84h"COURIERS"
--------S-1489-------------------------------
INT 14 - COMM-DRV v14.0 - TURN ON RTS
    AH = 89h
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=87h"COMM-DRV",AH=8Ah"COMM-DRV"
--------S-148A-------------------------------
INT 14 - COURIERS.COM - SEND BREAK
    AH = 8Ah
SeeAlso: AH=89h"COURIERS",AH=FAh
--------S-148A-------------------------------
INT 14 - COMM-DRV v14.0 - TURN OFF RTS
    AH = 8Ah
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AX=8000h"COMM-DRV",AH=88h"COMM-DRV",AH=89h"COMM-DRV"
--------S-148C-------------------------------
INT 14 - COURIERS.COM - SET SPEED
    AH = 8Ch
    BX = speed in bps
SeeAlso: AH=00h,AH=82h"COURIERS"
--------S-148C-------------------------------
INT 14 - COMM-DRV v14.0 - READ UART REGISTER
    AH = 8Ch
    AL = register offset
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
        AL = contents of UART register
SeeAlso: AH=8Dh"COMM-DRV"
--------S-148D-------------------------------
INT 14 - COURIERS.COM - DECONFIGURE PORT
    AH = 8Dh
SeeAlso: AH=82h"COURIERS"
--------S-148D-------------------------------
INT 14 - COMM-DRV v14.0 - WRITE UART REGISTER
    AH = 8Dh
    AL = register offset
    BL = new value for UART register
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AH=8Ch"COMM-DRV"
--------S-148E-------------------------------
INT 14 - COMM-DRV v14.0 - READ PACKET NONDESTRUCTIVELY
    AH = 8Eh
    CX = length of packet in bytes
    DX = port number
    ES:DI -> buffer for packet
Return: AH = line status (see #0155)
        bit 7 set on error (see AX=8000h"COMM-DRV")
    AL destroyed
Program: COMM-DRV is a universal serial communications driver by Willies'
      Computer Software Company, which supports standard INT 14 and
      FOSSIL calls as well as its own interfaces
Desc:    retrieve a packet from the input buffer without removing it from the
      buffer
Note:    this call requires that at least the requested number of bytes are
      already present in the input buffer, and will fail if there are
      fewer bytes available
SeeAlso: AX=8000h"COMM-DRV",AH=84h"COMM-DRV",AH=85h"COMM-DRV",AH=86h"COMM-DRV"
--------S-14A0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - CONNECT TO PORT
    AH = A0h
    ES:BX -> ASCIZ internet host name
    CX = length of name
Return: AH = return code (00h,04h-06h,08h,0Ah-0Ch) (see #0242)
    CL = session ID
Program: the Bridge Application Program Interface is a set of functions which
      makes many of the details of LAN communications transparent
Note:    Novell TELAPI.EXE returns AH=09h (not supported) and CL=00h
SeeAlso: AH=A1h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AX=AF00h

(Table 0242)
Values for 3com BAPI return code:
 00h    successful
 01h    no characters written
 02h    no characters read
 03h    no such session
 04h    clearinghouse name not found
 05h    no response from host
 06h    no more sessions available
 07h    session aborted
 08h    invalid clearinghouse name
 09h    not supported
 0Ah    internal (general) network error
 0Bh    out of memory
 0Ch    invalid IP address
--------S-14A0--CXFFFF-----------------------
INT 14 - Interconnections Inc. TES - INSTALLATION CHECK/STATUS REPORT
    AH = A0h
    CX = FFFFh
Return: CF clear if successful
        AX = 5445h ('TE')
        CX <> FFFFh
        DX = port number
    CF set on error
Program: TES is a network serial port emulation program
SeeAlso: AH=A1h"TES"
--------S-14A1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORT
    AH = A1h
    DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #0242)
    AL destroyed (Novell TELAPI.EXE)
SeeAlso: AH=A0h"BAPI"
--------S-14A1-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SESSIONS WITH STATUS
    AH = A1h
Return: CX = number of active sessions
    ES:SI -> status array (see #0243)
SeeAlso: AH=A2h"TES",AH=A3h"TES"

Format of Interconnections TES status array entry:
Offset    Size    Description    (Table 0243)
 00h    BYTE    status
 01h    WORD    offset of name
--------S-14A2-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE CHARACTER
    AH = A2h
    AL = character
    DH = session ID (00h for external session managment)
Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #0242)
SeeAlso: AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
--------S-14A2-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SERVER NAMES
    AH = A2h
Return: CX = number of servers
    ES:SI -> array of offsets from ES for server names
SeeAlso: AH=A1h"TES"
--------S-14A3-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ CHARACTER
    AH = A3h
    DH = session ID (00h for external session managment)
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #0242)
    AL = character read or 00h if none available
SeeAlso: AH=A0h"BAPI",AH=A2h"BAPI",AH=A5h"BAPI",AH=A7h"BAPI"
--------S-14A3-------------------------------
INT 14 - Interconnections Inc. TES - START A NEW SESSION
    AH = A3h
    ES:SI -> ???
Return: CF clear if successful
        AX = 5445h ('TE')
        CX <> FFFFh
        DX = port number
    CF set on error
SeeAlso: AH=A1h"TES",AH=A4h"TES",AH=A6h"TES"
--------S-14A4-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE BLOCK
    AH = A4h
    CX = length of buffer in bytes
    DH = session ID (00h for external session managment)
    ES:BX -> buffer containing data
Return: AH = return code (00h,01h,03h,07h,0Ah,0Bh) (see #0242)
    CX = number of bytes actually sent
SeeAlso: AH=19h,AH=86h,AH=A0h"BAPI",AH=A5h"BAPI"
--------S-14A4-------------------------------
INT 14 - Interconnections Inc. TES - HOLD CURRENTLY ACTIVE SESSION
    AH = A4h
    ???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A5-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ BLOCK
    AH = A5h
    CX = length of buffer
    DH = session ID (00h for external session managment)
    ES:BX -> buffer for data
Return: AH = return code (00h,02h,03h,07h,0Ah,0Bh) (see #0242)
    CX = number of bytes actually read
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A0h"BAPI",AH=A3h"BAPI",AH=A4h"BAPI"
SeeAlso: AH=A7h"BAPI",AX=FF02h
--------S-14A5-------------------------------
INT 14 - Interconnections Inc. TES - RESUME A SESSION
    AH = A5h
    AL = session number
Return: ???
SeeAlso: AH=A4h"TES",AH=A6h"TES"
--------S-14A6-------------------------------
INT 14 - 3com BAPI SERIAL I/O - SEND SHORT BREAK
    AH = A6h
    DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #0242)
Desc:    generate a short break signal; if data delivery was turned off by the
      break, wait for the host to turn it on again
SeeAlso: AH=1Ah,AH=8Ah,AH=FAh,AH=A0h"BAPI"
--------S-14A6-------------------------------
INT 14 - Interconnections Inc. TES - DROP A SESSION
    AH = A6h
    AL = session number
Return: AH = status
        00h successful
        else error
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A7-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ STATUS
    AH = A7h
    DH = session ID (00h for external session managment)
Return: AH = return code (00h,03h,07h,0Ah,0Bh) (see #0242)
    CX = number of bytes available for reading
Note:    Novell TELAPI.EXE v4.01 always returns either 0 or 1 bytes available
SeeAlso: AH=A5h"BAPI"
--------S-14A7-------------------------------
INT 14 - Interconnections Inc. TES - SWITCH TO NEXT ACTIVE SESSION
    AH = A7h
    ???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
--------S-14A8-------------------------------
INT 14 - Interconnections Inc. TES - SEND STRING TO COMMAND INTERPRETER
    AH = A8h
    AL = 00h no visible response
    ES:SI -> ASCIZ command
Return: ???
--------N-14A8-------------------------------
INT 14 - Novell TelAPI v4.01 - CONNECTION INFORMATION???
    AH = A8h
    DH = session ID???
    CH = subfunction
        02h ???
        0Dh ???
        0Fh ???
        10h ???
        11h ???
        28h ???
        else
        Return: AH = 09h (not supported)
Return: AH = return code (see #0242)
        00h successful
        CL = ??? (0/1/8) (subfunctions 02h,0Dh,0Fh,10h)
        CL = ??? (7Fh/FFh) (subfunction 28h)
        CX = ??? (subfunction 11h)
SeeAlso: AH=A9h"TelAPI"
--------N-14A9-------------------------------
INT 14 - Novell TelAPI v4.01 - CONNECTION CONTROL???
    AH = A9h
    DH = session ID???
    CH = subfunction
        02h ???
        0Dh ???
        0Fh ???
        10h ???
        11h ???
        28h ???
        else
        Return: AH = 09h (not supported)
    ???
Return: AH = return code (see #0242)
    ???
SeeAlso: AH=A8h"TelAPI",AH=E4h,INT 6B/AX=0600h
--------V-14AA01-----------------------------
INT 14 - DimVGA v2.0 - INSTALLATION CHECK
    AX = AA01h
Return: AX = FFFFh if installed, unchanged
    BX = version (v1.5+ only), BH = major, BL = minor (v1.5 = 0105h)
Program: DimVGA is a public domain screen saver by Menno Pieters
SeeAlso: AX=AA02h,AX=AA03h,AX=AA06h,INT 11/AX=0255h/BX=6900h,INT 12"KEYBUI"
SeeAlso: INT 2D/AL=10h"Burnout Plus",INT 2F/AX=6400h,INT 2F/AH=93h
SeeAlso: INT 2F/AX=C000h"VGAsave",INT 2F/AX=C000h"AD-DOS",INT 2F/AX=C050h
SeeAlso: INT 2F/AX=E300h
Index:    screen saver;DimVGA
--------V-14AA02-----------------------------
INT 14 - DimVGA v2.0 - SET TIME-OUT (BLANKING) PERIOD
    AX = AA02h
    BX = number of clock ticks
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA03h,AX=AA04h,AX=AA06h
Index:    screen saver;DimVGA
--------V-14AA03-----------------------------
INT 14 - DimVGA v2.0 - SET DIMMING FACTOR
    AX = AA03h
    BX = percentage remaining visible (0-100)
Return: AX = FFFFh
SeeAlso: AX=AA02h,AX=AA05h,AX=AA06h
Index:    screen saver;DimVGA
--------V-14AA04-----------------------------
INT 14 - DimVGA v2.0 - GET TIME-OUT PERIOD
    AX = AA04h
Return: AX = FFFFh
    BX = current time-out in clock ticks
SeeAlso: AX=AA02h,AX=AA05h,AX=AA0Ah
Index:    screen saver;DimVGA
--------V-14AA05-----------------------------
INT 14 - DimVGA v2.0 - GET DIMMING FACTOR
    AX = AA05h
Return: AX = FFFFh
    BX = current dimming factor
SeeAlso: AX=AA03h,AX=AA04h,AX=AA0Ah
Index:    screen saver;DimVGA
--------V-14AA06-----------------------------
INT 14 - DimVGA v2.0 - DISABLE
    AX = AA06h
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA07h,AX=AA0Ah
Index:    screen saver;DimVGA
--------V-14AA07-----------------------------
INT 14 - DimVGA v2.0 - ENABLE
    AX = AA07h
Return: AX = FFFFh
SeeAlso: AX=AA01h,AX=AA06h,AX=AA0Ah
Index:    screen saver;DimVGA
--------V-14AA08-----------------------------
INT 14 - DimVGA v2.0 - DIM SCREEN 'MANUALLY'
    AX = AA08h
Return: AX = FFFFh
Note:    this function will dim the screen immediately, even if DimVGA is
      currently disabled
SeeAlso: AX=AA01h,AX=AA09h
Index:    screen saver;DimVGA
--------V-14AA09-----------------------------
INT 14 - DimVGA v2.0 - UNDIM SCREEN 'MANUALLY'
    AX = AA09h
Return: AX = FFFFh
Note:    this function will undim the screen immediately, even if DimVGA is
      currently disabled
SeeAlso: AX=AA01h,AX=AA08h
Index:    screen saver;DimVGA
--------V-14AA0A-----------------------------
INT 14 - DimVGA v2.0 - CHECK WHETHER ENABLED
    AX = AA0Ah
Return: AX = FFFFh
    BX = current state (0000h disabled, 0001h enabled)
SeeAlso: AX=AA01h,AX=AA06h,AX=AA07h
Index:    screen saver;DimVGA
--------S-14AF00BXAAAA-----------------------
INT 14 - 3com BAPI SERIAL I/O - INSTALLATION CHECK
    AX = AF00h
    BX = AAAAh
Return: AX = AF01h if installed
        BH = protocol type (if BX=AAAAh on entry)
        01h NetManage TCP/IP
        BL = version for protocol type (if BX=AAAAh on entry)
Note:    early versions of the BAPI and the ROM BIOS simply destroy AX; this
      behavior is used to determine whether the newer functions (AH=B0h,
      AH=B1h,etc) are available
SeeAlso: AH=A0h"BAPI"
--------S-14B0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - EN/DISABLE "ENTER COMMAND MODE" (ECM) CHARACTER
    AH = B0h
    AL = new state (00h disabled, 01h enabled)
Return: AH = return code (00h,07h,0Ah) (see #0242)
Note:    disabling the ECM character allows applications to send data which
      includes the ECM character
SeeAlso: AX=AF00h"BAPI",AH=B1h,AH=B2h
--------S-14B1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - ENTER COMMAND MODE
    AH = B1h
Return: AH = return code (00h,07h,0Ah) (see #0242)
Desc:    provide a means for the application or terminal emulator to perform
      the same action normally caused by the ECM character
SeeAlso: AH=B0h,AH=B2h
--------S-14B2-------------------------------
INT 14 - 3com BAPI SERIAL I/O - GET ECM WATCH STATE
    AH = B2h
Return: AH = return code (00h,07h,0Ah) (see #0242)
    AL = watch flag (00h disabled, 01h enabled)
Desc:    determine whether the ECM character is enabled
SeeAlso: AH=B0h,AH=B1h
--------S-14B3-------------------------------
INT 14 - 3com BAPI SERIAL I/O - GET/SET CONFIGURATION INFO
    AH = B3h
    AL = direction (00h get, 01h set)
    DH = session ID (00h for external session managment)
    DL = configuration item (00h = end-of-line mapping)
    CX = new configuration item value (if AL=01h)
        ---if DL=00h---
        CH = application EOL type (app to Telnet client)
        01h application will send lone CR
        02h application will send CR-? pair
        CL = driver EOL type (Telnet client to Telnet server)
        01h driver should send CR-NUL pair
        02h driver should send CR-LF pair
Return: AH = return code (00h,03h,09h-0Bh) (see #0242)
    ---if AL=00h---
    CX = configuration item value (see above)
SeeAlso: AH=B2h
--------N-14E0-------------------------------
INT 14 - TelAPI - ???
    AH = E0h
    BX = ???
    CX:DX = ???
    DS:DI -> ???
    ES:SI -> ???
Return: AX = status (0000h,FF37h,etc.)
    ES:SI -> ??? if ???
    ???
SeeAlso: AH=ECh,AX=FF00h
--------S-14E000-----------------------------
INT 14 - MX5 Extended FOSSIL - GET MNP STATUS BLOCK
    AX = E000h
    DX = port number (0-3)
Return: ES:BX -> status block (see #0244)
Program: MX5 is a FOSSIL driver by MagicSoft which emulates MNP Level 5, and
      ships with the MTEZ terminal program as MTEMNP.DRV (a TSR despite
      the .DRV extension)
SeeAlso: AX=E006h

Format of MX5 Extended FOSSIL status block:
Offset    Size    Description    (Table 0244)
 00h    BYTE    flag: active (00h no, 01h yes)
 01h    BYTE    MNP level (2,4,5)
 02h    BYTE    series ID from remote MNP
 03h    DWORD    total packets transmitted
 07h    DWORD    duplicate packets transmitted
 0Bh    DWORD    maximum speed
 0Fh    DWORD    total packets received
 13h    DWORD    duplicate packets received
 17h    DWORD    maximum speed
--------S-14E001-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP LEVEL
    AX = E001h
    BH = function
        00h get MNP level
        01h set MNP level
        BL = new level (00h none, 02h/04h/05h MNP level N)
    DX = port number (0-3)
Return: BL = MNP level
SeeAlso: AX=E002h,AX=E003h,AX=E004h,AX=E006h
--------S-14E002-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP ANSWER/ORIGINATE MODE
    AX = E002h
    BH = function
        00h get answer/originate mode
        01h set mode
        BL = new mode (00h originate [default], 01h answer)
    DX = port number (0-3)
Return: BL = answer/originate mode
SeeAlso: AX=E001h,AX=E003h,AX=E006h
--------S-14E003-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP WAIT TICKS
    AX = E003h
    BH = function
        00h get wait ticks
        01h set wait ticks
        BL = MNP wait ticks (default 0Eh)
    DX = port number (0-3)
Return: BL = wait ticks
SeeAlso: AX=E001h,AX=E002h,AX=E006h
--------S-14E004-----------------------------
INT 14 - MX5 Extended FOSSIL - GET/SET MNP CONNECT SOUND LEVEL
    AX = E004h
    BH = function
        00h get sound level
        01h set sound level
        BL = new sound level (00h off, 01h on [default])
    DX = port number
Return: BL = sound state
Desc:    specify whether MX5 should generate beeps after an MNP connection
      (three high beeps if successful, high then low on connection failure)
SeeAlso: AX=E002h,AX=E006h
--------S-14E005-----------------------------
INT 14 - MX5 Extended FOSSIL - UNINSTALL
    AX = E005h
Return: BX = segment of MX5's memory block or 0000h on failure
Note:    caller must free the returned memory block to complete the uninstall
SeeAlso: AX=E006h
--------S-14E006BX0000-----------------------
INT 14 - MX5 Extended FOSSIL - INSTALLATION CHECK
    AX = E006h
    BX = 0000h
Return: BX = 4D58h ('MX') if installed
        AH = major version
        AL = minor version
SeeAlso: AX=E000h,AX=E001h,AX=E005h,AX=E007h
--------S-14E007-----------------------------
INT 14 - MX5 Extended FOSSIL - WAIT SPECIFIED NUMBER OF TICKS
    AX = E007h
    CX = number of ticks to wait
Return: nothing
SeeAlso: AX=E006h
--------N-14E1-------------------------------
INT 14 - TelAPI - ???
    AH = E1h
    BX = connection ID
    ???
Return: AX = status (0000h,FFF7h,maybe others)
    ???
SeeAlso: AH=E6h,AX=FF00h
--------N-14E2-------------------------------
INT 14 - TelAPI - BUFFERED READ
    AH = E2h
    BX = connection ID
    CX = length of buffer in bytes
    ES:SI -> buffer for data
Return: AX = number of characters actually read??? (negative on error)
SeeAlso: AH=E6h,AX=FF00h,INT 6B/AH=01h
--------N-14E3-------------------------------
INT 14 - TelAPI - BUFFERED WRITE
    AH = E3h
    BX = connection ID
    CX = length of buffer in bytes
    ES:SI -> buffer containing data
Return: AX = number of characters actually written??? (negative on error)
SeeAlso: AH=07h"TelAPI",AH=E6h,AX=FF00h,INT 6B/AH=00h
--------N-14E4-------------------------------
INT 14 - TelAPI - CONNECTION CONTROL???
    AH = E4h
    BX = connection ID
    CX = ???
    ES:SI -> 10-byte buffer containing ???
Return: ???
SeeAlso: AH=A9h,AH=E6h,AX=FF00h,INT 6B/AX=0600h
--------N-14E5-------------------------------
INT 14 - TelAPI - ???
    AH = E5h
Return: AX = status???
SeeAlso: AH=E6h,AX=FF00h
--------N-14E6-------------------------------
INT 14 - TelAPI - ???
    AH = E6h
Return: AX = status???
Notes:    TelAPI also supports the NASI/NACS and NCSI APIs on INT 6B
    this function invokes AH=E5h internally
SeeAlso: AX=FF00h,INT 6B/AH=00h,INT 6B/AH=10h
--------N-14E7-------------------------------
INT 14 - TelAPI - GET ???
    AH = E7h
    ES:SI -> 20-byte buffer for ???
Return: AX = 0000h (successful)
    ES:SI buffer filled
SeeAlso: AX=FF00h
--------N-14E8-------------------------------
INT 14 - TelAPI - SET ???
    AH = E8h
    BX = connection ID
    CL = new value for ???
    DX = ??? (ignored by Novell TELAPI v4.01)
Return: AX = status (0000h,FFFFh)
SeeAlso: AX=FF00h
--------N-14E9-------------------------------
INT 14 - TelAPI - ???
    AH = E9h
    DX = ???
Return: ???
SeeAlso: AX=FF00h
--------N-14EA-------------------------------
INT 14 - TelAPI - GET CONNECTION INFO???
    AH = EAh
    BX = connection ID
    ES:SI -> buffer for info???
Return: AX = status (0000h,FFFFh,etc.)
SeeAlso: AX=FF00h
--------N-14EB-------------------------------
INT 14 - TelAPI - GET ???
    AH = EBh
    ES:SI -> buffer for ???
Return: ES:SI buffer filled
SeeAlso: AX=FF00h
--------N-14EC-------------------------------
INT 14 - TelAPI - ???
    AH = ECh
    BX = ???
    CX:DX = ???
    DS:DI -> ???
    ES:SI -> ???
Return: AX = status (0000h,FF37h,etc.)
    ES:SI -> ??? if ???
    ???
Note:    this function is not supported by the Microdyne TelAPI v3.7
SeeAlso: AH=E0h"TelAPI",AX=FF00h
--------N-14ED-------------------------------
INT 14 - TelAPI - ???
    AH = EDh
    BX = connection ID
Return: AX = status (0000h,FFFFh,etc.)
Note:    this function is not supported by the Microdyne TelAPI v3.7
SeeAlso: AX=FF00h
--------a-14F0F0-----------------------------
INT 14 - ASAP v1.0 - ???
    AX = F0F0h
    DX = ???
    ???
Return: ???
Program: ASAP (Automatic Screen Access Program) is a shareware screen reader by
      MicroTalk
SeeAlso: AX=F0F1h
--------a-14F0F1DX0000-----------------------
INT 14 - ASAP v1.0 - INSTALLATION CHECK
    AX = F0F1h
    DX = 0000h
Return: DX = segment of resident code
        0000h if not installed
Program: ASAP (Automatic Screen Access Program) is a shareware screen reader by
      MicroTalk
SeeAlso: AX=F0F0h,INT 10/AX=3800h
--------S-14F4FF-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - INSTALLATION CHECK
    AX = F4FFh
    DX = port (00h-03h)
Return: CF clear if present
        AX = 0000h
    CF set if not present
        AX <> 0000h
--------S-14F9-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - REGAIN CONTROL
    AH = F9h
    DX = port (00h-03h)
--------S-14FA-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SEND BREAK
    AH = FAh
    DX = port (00h-03h)
SeeAlso: AH=1Ah,AH=8Ah
--------S-14FB-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET OUTGOING MODEM SIGNALS
    AH = FBh
    AL = modem control register (see #0185 at AH=05h)
    DX = port (00h-03h)
SeeAlso: AH=05h"SERIAL"
--------S-14FC-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT
    AH = FCh
    DX = port (00h-03h)
Return: AH = RS232 status bits (see #0155 at AH=03h)
    AL = character
SeeAlso: AH=02h,AH=0Ch,AX=FF02h
--------S-14FD02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ STATUS
    AX = FD02h
Return: CX = number of characters available
--------N-14FF00-----------------------------
INT 14 - TelAPI - INSTALLATION CHECK
    AX = FF00h
Return: AL = FFh if installed
    AH = 00h for Novell TELAPI.EXE
SeeAlso: AH=E6h
--------S-14FF01-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET SEND BUFFER
    AX = FF01h
    CX = length of buffer (0000h to cancel buffer assignment)
    DX = port (00h-03h)
    ES:BX -> send buffer
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF02h
--------S-14FF02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET RECEIVE BUFFER
    AX = FF02h
    CX = length of buffer (0000h to cancel buffer assignment)
    DX = port (00h-03h)
    ES:BX -> receive buffer
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh,AX=FF03h
--------S-14FFF8-----------------------------
INT 14 - COMM-DRV v14.0 - SET BAUD RATE DIVISOR
    AX = FFF8h
    BX = card type (sub-device number)
    CX = new baudrate divisor
    DX = index to baud rate
Return: AH bit 7 set on error
    AH bit 7 clear if successful
Program: COMM-DRV is a universal serial communications driver by Willies'
      Computer Software Company, which supports standard INT 14 and
      FOSSIL calls as well as its own interfaces
SeeAlso: AX=8000h"COMM-DRV"
--------S-14FFFB-----------------------------
INT 14 - COMM-DRV v14.0 - GET HIGHEST ALLOWED PORT NUMBER
    AX = FFFBh
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
        BX = highest port number
--------S-14FFFC-----------------------------
INT 14 - COMM-DRV v14.0 - GET INT 14 FLAGS
    AX = FFFCh
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
        BX = flags (see #0245)
SeeAlso: AX=FFFDh

Bitfields for INT 14h flags:
Bit(s)    Description    (Table 0245)
 0    port active for INT 14h
 1    interface behaving like a FOSSIL driver
--------S-14FFFD-----------------------------
INT 14 - COMM-DRV v14.0 - SET INT 14 FLAGS
    AX = FFFDh
    BX = flags (see #0245)
    DX = port number
Return: AH bit 7 set on error
    AH bit 7 clear if successful
SeeAlso: AX=FFFCh
--------S-14FFFE-----------------------------
INT 14 - COMM-DRV v14.0 - RESTORE INT 14 VECTOR TO ORIGINAL
    AX = FFFEh
Return: AH bit 7 set on error
    AH bit 7 clear if successful
--------S-14FFFF-----------------------------
INT 14 - COMM-DRV v14.0 - GET INT 14 INFORMATION AREA
    AX = FFFFh
    BX:SI -> DWORD buffer for address of information area (see #0246)
          (initialized to zeros)
Return: BX:SI buffer filled with nonzero value if installed
Program: COMM-DRV is a universal serial communications driver by Willies'
      Computer Software Company, which supports standard INT 14 and
      FOSSIL calls as well as its own interfaces
Index:    installation check;COMM-DRV

Format of COMM-DRV information area:
Offset    Size    Description    (Table 0246)
 00h  8 BYTEs    signature "COMM-DRV"
 08h  2 BYTEs    00h,00h
 0Ah    DWORD    -> direct address mapping table
 0Eh    DWORD    previous INT 14 vector
--------t-15---------------------------------
INT 15 - Microsoft TSR Specification
    No additional information available at this time.
--------B-1500-------------------------------
INT 15 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PC and PCjr only)
    AH = 00h
Return: CF set on error
        AH = 86h no cassette present
    CF clear if successful
SeeAlso: AH=01h"CASSETTE"
--------M-1500-------------------------------
INT 15 - Amstrad PC1512 - GET AND RESET MOUSE COUNTS
    AH = 00h
Return: CX = signed X count
    DX = signed Y count
--------O-1500-------------------------------
INT 15 - VMiX v2+ - INSTALLATION CHECK
    AH = 00h
Return: DX = 0798h if installed
        AX = version (AH = major, AL = minor)
--------T-1500-------------------------------
INT 15 - MultiDOS Plus - GIVE UP TIME SLICE
    AH = 00h
Note:    if issued by the highest-priority task while MultiDOS is using
      priority-based rather than round-robin scheduling, control will be
      returned to the caller immediately
SeeAlso: AH=03h"MultiDOS",AX=1000h
--------B-1501-------------------------------
INT 15 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PC and PCjr only)
    AH = 01h
Return: CF set on error
        AH = 86h no cassette present
    CF clear if successful
SeeAlso: AH=00h"CASSETTE"
--------b-1501-------------------------------
INT 15 - Amstrad PC1512 - WRITE DATA TO NON-VOLATILE RAM
    AH = 01h
    AL = NVRAM location (00h to 3Fh) (see #0247)
    BL = NVRAM data value
Return: AH = return code
        00h OK
        01h address bad
        02h write error
SeeAlso: AH=02h"Amstrad"

Format of Amstrad NVRAM:
Offset    Size    Description    (Table 0247)
 00h    BYTE    time of day: seconds
 01h    BYTE    alarm time: seconds
 02h    BYTE    time of day: minutes
 03h    BYTE    alarm time: minutes
 04h    BYTE    time of day: hours
 05h    BYTE    alarm time: hours
 06h    BYTE    day of week, 1 = Sunday
 07h    BYTE    day of month
 08h    BYTE    month
 09h    BYTE    year mod 100
 0Ah    BYTE    RTC status register A (see #0248)
 0Bh    BYTE    RTC status register B (see #0249)
 0Ch    BYTE    RTC status register C (read-only) (see #0250)
 0Dh    BYTE    RTC status register D
        bit 7: battery good
 0Eh  6 BYTEs    time and date machine last used
 14h    BYTE    user RAM checksum
 15h    WORD    Enter key scancode/ASCII code
 17h    WORD    Forward delete key scancode/ASCII code
 19h    WORD    Joystick fire button 1 scancode/ASCII code
 1Bh    WORD    Joystick fire button 2 scancode/ASCII code
 1Dh    WORD    mouse button 1 scancode/ASCII code
 1Fh    WORD    mouse button 2 scancode/ASCII code
 21h    BYTE    mouse X scaling factor
 22h    BYTE    mouse Y scaling factor
 23h    BYTE    initial VDU mode and drive count
 24h    BYTE    initial VDU character attribute
 25h    BYTE    size of RAM disk in 2K blocks
 26h    BYTE    initial system UART setup byte
 27h    BYTE    initial external UART setup byte
 28h 24 BYTEs    available for user application
Note:    bytes 00h-0Dh are the same on the IBM AT as they are used/updated by
      the clock chip

Bitfields for RTC status register A:
Bit(s)    Description    (Table 0248)
 7    set if date/time being updated
 6-4    time base speed, default 010 = 32768 Hz
 3-0    interrupt rate selection, default 0110 = 1024 Hz

Bitfields for RTC status register B:
Bit(s)    Description    (Table 0249)
 7    clear if normal update, set if abort update
 6    periodic interrupt enable
 5    alarm interrupt enable
 4    update end interrupt enable
 3    square wave enable
 2    date mode (clear = BCD, set = binary)
 1    24-hour format
 0    daylight saving time enable

Bitfields for RTC status register C:
Bit(s)    Description    (Table 0250)
 7    IRQF flag
 6    PF flag
 5    AF flag
 4    UF flag
--------O-1501-------------------------------
INT 15 - VMiX - "sys_chanreq" - I/O CHANNEL OBJECT MANAGER
    AH = 01h
    STACK:    WORD    object ID of requestor
        DWORD    pointer to ASCIZ name of requested method
            "assign" assign channel to object
            "deassign" deassign channel
            "cursor" set cursor on/off
            "init" initialize comm port
            "open" open I/O channel
            "position" set cursor position
            "receive" get buffered packet from comm port
            "send" send buffered packet to comm port
            "vio" set current virtual I/O to specified channel
            "window" make window at cursor position
        ---if "assign"---
         WORD    object UID
         WORD    caller UID/PID
         DWORD    CSL with port
        ---if "deassign"---
         WORD    channel ID
        ---if "cursor"---
         WORD    channel ID (must be a SRCSINK)
         WORD    new state (0000h off, 0001h on)
        ---if "init"---
         WORD    channel ID (must be a SRCSINK)
         WORD    comm port number (00h-03h)
         WORD    UART init code
        ---if "open"---
         WORD    channel ID
        ---if "position"---
         WORD    channel ID (must be a SRCSINK)
         WORD    position (high byte = row, low byte = column)
        ---if "receive"---
         DWORD    pointer to buffer
        ---if "send"---
         WORD    length of buffer
         DWORD    pointer to buffer
        ---if "vio"---
         WORD    channel ID (must be a SRCSINK)
        ---if "window"---
         WORD    top left (high byte = row, low byte = column)
         WORD    bottom right (high byte = row, low byte = column)
Return: DX:AX -> IRP structure or 0000h:0000h
SeeAlso: AH=00h"VMiX",AH=02h"VMiX"
--------T-1501-------------------------------
INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE
    AH = 01h
    AL = semaphore number (00h-3Fh)
Return: AH = status
        00h successful
        02h invalid semaphore number
Notes:    if the semaphore is not owned, ownership is assigned to the calling
      task and the call returns immediately
    if the semaphore is already owned by another task, the calling task
      is placed on a queue for the semaphore and suspended until it can
      become owner of the semaphore
    semaphore 0 is used internally by MultiDOS to synchronize DOS access
SeeAlso: AH=02h"MultiDOS",AH=10h"MultiDOS",AH=1Bh"MultiDOS"
--------B-1502-------------------------------
INT 15 - CASSETTE - READ DATA (PC and PCjr only)
    AH = 02h
    CX = number of bytes to read
    ES:BX -> buffer
Return: CF clear if successful
        DX = number of bytes read
        ES:BX -> byte following last byte read
    CF set on error
    AH = status (see #0251)
SeeAlso: AH=00h"CASSETTE",AH=03h"CASSETTE"

(Table 0251)
Values for Cassette status:
 00h    successful
 01h    CRC error
 02h    bad tape signals
 04h    no data
 80h    invalid command
 86h    no cassette present
--------b-1502-------------------------------
INT 15 - Amstrad PC1512 - READ DATA FROM NON-VOLATILE RAM
    AH = 02h
    AL = NVRAM location (00h to 3Fh)
Return: AH = return code
        00h OK
        01h address bad
        02h checksum error
    AL = NVRAM data value
SeeAlso: AH=01h"Amstrad"
--------O-1502-------------------------------
INT 15 - VMiX - "sys_memreq" - MEMORY OBJECT MANAGER
    AH = 02h
    STACK:    WORD    object ID of requestor
        DWORD    pointer to ASCIZ name of requested method
            "assign" allocate low memory block
            "assign extended" allocate extended memory pages
            "assign gdt" allocate GDT selector
            "paged" allocate low paged memory
            "paged extended" alllocate extended memory pages
            "deassign" free memory block
            "deassign gdt" free GDT selector
            "getvpage" get physical address for virtual page
            "setvpage" set physical address for virtual page
            "info" get VMiX memory usage info block
            "move" move contents of 32-bit memory
            "newmcb" make new DOS memory control block
            "owner" get process ID of MCB or PSP owner
            "umb" allocate upper memory block
            "video" toggle system use of vidoe memory and get stat
        ---if "assign"---
         WORD    number of objects
         WORD    size in bytes (multiple of 512 bytes)
        ---if "assign extended"---
         WORD    number of objects
         WORD    size in bytes (multiple of 4K)
        ---if "assign gdt"---
         WORD    access type (low byte)
         WORD    segment size in paragraphs
         DWORD    pointer to start of physical segment
        ---if "paged"---
         WORD    number of 512-byte pages
        ---if "paged extended"
         WORD    number of 4K pages
        ---if "deassign"---
         DWORD    pointer returned by previous allocation call
        ---if "deassign gdt"---
         WORD    GDT selector
        ---if "getvpage"---
         WORD    owner's process ID
         DWORD    pointer to buffer for page structure (struct VPGE)
        ---if "setvpage"---
         WORD    owner's process ID
         DWORD    pointer to new page structure (struct VPGE)
        ---if "info"---
         no additional arguments
        ---if "move"
         DWORD    32-bit source address
         DWORD    32-bit destination address
         WORD    number of words to move
        ---if "newmcb"---
         DWORD    pointer to new MCB's location
         WORD    size of memory block
         DWORD    pointer to ASCIZ name string (max 8 chars)
        ---if "owner"---
         WORD    MCB or PSP segment
        ---if "umb"---
         WORD    size in paragraphs
        ---if "video"---
         no additional arguments
Return: DX:AX -> memory block or VPGE struct or 0000h:0000h
SeeAlso: AH=00h"VMiX",AH=01h"VMiX"
--------T-1502-------------------------------
INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE
    AH = 02h
    AL = semaphore number (00h-3Fh)
Return: AH = status
        00h successful
        01h not semaphore owner
        02h invalid semaphore number
Notes:    if any tasks are waiting for the semaphore, the first task on the wait
      queue will become the new owner and be reawakened
    do not use within an interrupt handler
SeeAlso: AH=01h"MultiDOS",AH=10h"MultiDOS",AH=1Ch"MultiDOS"
--------B-1503-------------------------------
INT 15 - CASSETTE - WRITE DATA (PC and PCjr only)
    AH = 03h
    CX = number of bytes to write
    ES:BX -> data buffer
Return: CF clear if successful
        ES:BX -> byte following last byte written
    CF set on error
    AH = status (see #0251)
    CX = 0000h
SeeAlso: AH=00h"CASSETTE",AH=02h"CASSETTE"
--------V-1503-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE WRITE REGISTER
    AH = 03h
    AL = value (I,R,G,B bits)
SeeAlso: AH=04h"Amstrad"
--------O-1503-------------------------------
INT 15 - VMiX - "sys_pinput" - PROMPTED CONSOLE INPUT
    AH = 03h
    STACK:    DWORD    pointer to ASCII prompt
        WORD    field outline character
        WORD    length of input field (max 7Fh)
        DWORD    address of pointer to input buffer
Return: AX = length of input (input buffer is padded with blanks)
SeeAlso: AH=04h"VMiX"
--------T-1503-------------------------------
INT 15 - MultiDOS Plus - SUSPEND TASK FOR INTERVAL
    AH = 03h
    DX = number of time slices to remain suspended
Return: after specified interval has elapsed
Note:    when priority-based scheduling is in use, high-priority tasks should
      use this function to yield the processor
SeeAlso: AH=00h"MultiDOS",AH=0Ah"MultiDOS"
--------B-1504-------------------------------
INT 15 - SYSTEM - BUILD ABIOS SYSTEM PARAMETER TABLE (PS)
    AH = 04h
    ES:DI -> 32-byte results buffer for System Parameter Table (see #0252)
    DS = segment containing ABIOS RAM extensions (zero if none)
Return: CF clear if successful
        AH = 00h success
        ES:DI buffer filled
        AL destroyed
    CF set on failure
        AX destroyed
        AH = 80h/86h if not supported
SeeAlso: AH=05h"ABIOS",AH=C1h

Format of ABIOS System Parameter Table:
Offset    Size    Description    (Table 0252)
 00h    DWORD    FAR address of ABIOS Common Start Routine
 04h    DWORD    FAR address of ABIOS Interrupt Routine
 08h    DWORD    FAR address of ABIOS Time-out Routine
 0Ch    WORD    number of bytes of stack required by this ABIOS implementation
 0Eh 16 BYTEs    reserved
 1Eh    WORD    number of entries in initialization table
--------V-1504-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU COLOR PLANE READ REGISTER
    AH = 04h
    AL = value (RDSEL1 and RDSEL0)
SeeAlso: AH=03h"Amstrad",05h"Amstrad"
--------O-1504-------------------------------
INT 15 - VMiX - "sys_vprintf" - FORMATTED OUTPUT TO STREAM
    AH = 04h
    STACK:    DWORD    control string
        DWORD    array of arguments
SeeAlso: AH=03h"VMiX"
--------T-1504-------------------------------
INT 15 - MultiDOS Plus - SEND MESSAGE TO ANOTHER TASK
    AH = 04h
    AL = mailbox number (00h-3Fh)
    CX = message length in bytes
    DS:SI -> message
Return: AH = status
        00h successful
        01h out of message memory
        02h invalid mailbox number
Note:    the message is copied into a system buffer; the caller may immediately
      reuse its buffer
SeeAlso: AH=05h"MultiDOS"
--------B-1505-------------------------------
INT 15 - SYSTEM - BUILD ABIOS INITIALIZATION TABLE (PS)
    AH = 05h
    ES:DI -> results buffer of length 18h * Number_of_Entries (see #0253)
    DS = segment containing ABIOS RAM extensions (zero if none)
Return: CF clear if successful
        AH = 00h success
        ES:DI buffer filled
        AL destroyed
    CF set on failure
        AX destroyed
        AH = 80h/86h if not supported
SeeAlso: AH=04h"ABIOS",AH=C1h

Format of one entry of ABIOS Initialization Table:
Offset    Size    Description    (Table 0253)
 00h    WORD    device ID (see #2176)
 02h    WORD    number of Logical IDs
 04h    WORD    Device Block length (zero for ABIOS patch or extension)
 06h    DWORD    -> init routine for Device Block and Function Transfer Table
 0Ah    WORD    request block length
 0Ch    WORD    Function Transfer Table length (zero for a patch)
 0Eh    WORD    Data Pointers length (in Common Data Area)
 10h    BYTE    secondary device ID (hardware level this ABIOS ver supports)
 11h    BYTE    revision (device driver revision level this ABIOS supports)
 12h  6 BYTEs    reserved

(Table 2176)
Values for ABIOS device ID:
 00h    ABIOS internal calls
 01h    floppy disk
 02h    hard disk
 03h    video
 04h    keyboard
 05h    parallel port
 06h    serial port
 07h    system timer
 08h    real-time clock
 09h    system services
 0Ah    NMI
 0Bh    mouse
 0Eh    CMOS RAM
 0Fh    DMA
 10h    Programmable Option Select (POS)
 16h    keyboard password
--------V-1505-------------------------------
INT 15 - Amstrad PC1512 - WRITE VDU GRAPHICS BORDER REGISTER
    AH = 05h
    AL = value (I,R,G,B bits)
SeeAlso: AH=04h"Amstrad"
--------O-1505-------------------------------
INT 15 - VMiX - "sys_getpid" - GET PROCESS ID OF CURRENT PROCESS
    AH = 05h
Return: AX = process ID
SeeAlso: AH=06h"VMiX",AH=0Bh"VMiX"
--------T-1505-------------------------------
INT 15 - MultiDOS Plus - CHECK MAILBOX
    AH = 05h
    AL = mailbox number (00h-3Fh)
Return: AH = status
        00h successful
        DX = length of first message in queue, 0000h if no message
        02h invalid mailbox number
SeeAlso: AH=04h"MultiDOS",AH=06h"MultiDOS"
--------b-1506-------------------------------
INT 15 - Amstrad PC1512 - GET ROS VERSION NUMBER
    AH = 06h
Return: BX = version number
--------O-1506-------------------------------
INT 15 - VMiX - "sys_getpcb" - GET POINTER TO PROCESS CONTROL BLOCK
    AH = 06h
    STACK:    WORD    process ID
Return: DX:AX -> process control block
SeeAlso: AH=05h"VMiX",AH=07h"VMiX",AH=08h"VMiX"
--------T-1506-------------------------------
INT 15 - MultiDOS Plus - READ MAILBOX
    AH = 06h
    AL = mailbox number (00h-3Fh)
    CX = size of buffer in bytes
    ES:DI -> buffer for message
Return: AH = status
        00h successful
        CX = number of bytes copied
        DX = actual length of message
        02h invalid mailbox number
Note:    if the caller's buffer is not large enough, the message is truncated
      and the remainder is lost
SeeAlso: AH=04h"MultiDOS",AH=05h"MultiDOS"
--------O-1507-------------------------------
INT 15 - VMiX - "sys_getocb" - GET POINTER TO OBJECT CONTROL BLOCK
    AH = 07h
    STACK:    WORD    object type
Return: DX:AX -> object control block
SeeAlso: AH=06h"VMiX",AH=08h"VMiX"
--------T-1507-------------------------------
INT 15 - MultiDOS Plus - SPAWN INTERNAL TASK (CREATE NEW THREAD)
    AH = 07h
    BX:CX = entry point of new task
    DX = stack size in paragraphs
Return: AH = status
        00h successful
        01h no free task control blocks
        02h no free memory for task's stack
Note:    execution returns immediately to calling task
SeeAlso: AH=08h"MultiDOS",AH=09h"MultiDOS",AH=13h"MultiDOS"
--------O-1508-------------------------------
INT 15 - VMiX - "sys_getccb" - GET CHANNEL CONTROL BLOCK
    AH = 08h
    STACK:    WORD    channel ID
Return: DX:AX -> channel control block
SeeAlso: AH=06h"VMiX",AH=07h"VMiX"
--------T-1508-------------------------------
INT 15 - MultiDOS Plus - TERMINATE INTERNAL TASK (KILL THREAD)
    AH = 08h
Return: calling task terminated, so execution never returns to caller
Notes:    an internal task must be terminated with this function rather than a
      DOS termination function
    task's stack space is returned to parent task's memory pool
SeeAlso: AH=07h"MultiDOS"
--------O-1509-------------------------------
INT 15 - VMiX - "sys_getqueue" - GET ID OF QUEUED ELEMENT
    AH = 09h
    STACK:    WORD    queue ID (0 = process queue, 1 = object, 3 = type)
        WORD    subqueue ID
Return: AX = queue ID
SeeAlso: AH=0Ah"VMiX"
--------T-1509-------------------------------
INT 15 - MultiDOS Plus - CHANGE TASK'S PRIORITY
    AH = 09h
    AL = new priority
Note:    the priority has different meanings depending on whether priority-
      based or round-robin scheduling is used
SeeAlso: AH=07h"MultiDOS"
--------O-150A-------------------------------
INT 15 - VMiX - "sys_qetqnext" - GET ID OF NEXT QUEUED ELEMENT
    AH = 0Ah
    STACK:    WORD    queue ID (0 = process queue, 1 = object, 3 = type)
        WORD    ID of current element in queue chain
Return: AX = ID of next element
SeeAlso: AH=09h"VMiX",AH=0Fh"VMiX"
--------T-150A-------------------------------
INT 15 - MultiDOS Plus - CHANGE TIME SLICE INTERVAL
    AH = 0Ah
    AL = new interval
        00h = 55.0 ms (default)
        80h = 27.5 ms
        40h = 13.75 ms
        20h = 6.88 ms
        10h = 3.44 ms
        08h = 1.72 ms
SeeAlso: AH=03h"MultiDOS"
--------O-150B-------------------------------
INT 15 - VMiX - "sys_sysreq" - SYSTEM CONFIGURATION MANAGER
    AH = 0Bh
    STACK:    WORD    caller's UID
        DWORD    pointer to ASCIZ name of requested method
            "abort" abort current send/receive on comm port
            "block" start/end critical section
            "close" terminate interrupt-drive comm I/O
            "open" prepare comm port for interrupt-driven I/O
            "delay" set delay timer and wait
            "hibernate" put process to sleep
            "ints" enable/disable interrupt-driven INT 14h
            "length" get current send/receive buffer offsets
            "kswitch" switch stacks
            "numproc" get number of active processes
            "protocol" set protocol function for comm interrupts
            "relocate" set/reset VMiX flag for relocating to himem
            "status" get current open comm port status
            "wake" awaken a process
            "xport" get comm port polled for logins
        ---if "abort"---
         no additional arguments
        ---if "block"---
         WORD    0000h end, 0001h start
        ---if "close"---
         no additional arguments
        ---if "open"---
         WORD    comm port (00h-03h)
         WORD    BIOS parameter byte (see #0151 at INT 14/AH=00h),
            except bits 7-5: 000 = 19200, 001 = 38400, 011 = 115200
        ---if "delay"---
         WORD    time in seconds
        ---if "hibernate"---
         WORD    process ID
        ---if "ints"---
         WORD    0000h if no, 0001h if yes
        ---if "length","numproc","relocate","status","xport"---
         no additional arguments
        ---if "kswitch"---
         DWORD    pointer to new stack
        ---if "protocol"---
         DWORD    pointer to function (must be in low "assign"ed memory
            when in 386 mode)
        ---if "wake"---
         WORD    process ID
Return: DX:AX -> result or 0000h:0000h
        ---if "length"---
         BYTE    receive offset
         BYTE    send offset
        ---if "kswitch"---
         DWORD    old stack pointer
        ---if "numproc"---
         WORD    number of active processes
        ---if "status"---
         current open comm port status
        ---if "xport"---
         current comm port being polled for logins
SeeAlso: AH=05h"VMiX",AH=0Eh"VMiX"
--------T-150B-------------------------------
INT 15 - MultiDOS Plus - FORCE DISPLAY OUTPUT TO PHYSICAL SCREEN MEMORY
    AH = 0Bh
Notes:    sets calling task's screen pointer to actual screen memory; the pointer
      may be restored with AH=0Ch
    caller's video mode must be same as foreground task's video mode
    any text written while in the background will be saved to the
      foreground task's virtual screen when it switches to the background
    useful if a background task wants to display a message on the
      foreground screen
SeeAlso: AH=0Ch"MultiDOS"
--------O-150C-------------------------------
INT 15 - VMiX - "sys_getstack" - GET POINTER TO PROCESS TSS STACK
    AH = 0Ch
    STACK:    WORD    process ID
Return: DX:AX -> TSS stack store
SeeAlso: AH=00"VMiX"
--------T-150C-------------------------------
INT 15 - MultiDOS Plus - RESTORE OLD VIDEO DISPLAY MEMORY
    AH = 0Ch
Note:    restores task's screen pointer saved by AH=0Bh; must not be called
      unless AH=0Bh has been called first
SeeAlso: AH=0Bh"MultiDOS"
--------O-150D-------------------------------
INT 15 - VMiX - "sys_spawn" - START A CHILD PROCESS JOB SHELL
    AH = 0Dh
    STACK:    DWORD    ASCIZ string starting with requested I/O channel and
            followed by standard VMiX shell command string
Return: AX = process ID or error code "SYS_ERROR"
Note:    the maximum string length is 7Fh characters
SeeAlso: AH=0Eh"VMIX",AH=11h"VMiX",INT 21/AH=4Bh
--------T-150D-------------------------------
INT 15 - MultiDOS Plus - DISABLE MULTITASKING
    AH = 0Dh
Note:    calling task receives all time slices until AH=0Eh is called; this
      allows time-critical events or nonreentrant code to be processed
SeeAlso: AH=0Eh"MultiDOS",AH=10h"MultiDOS",AX=101Bh,AH=20h"MultiDOS"
--------O-150E-------------------------------
INT 15 - VMiX - "sys_kill" - HARD TERMINATE PROCESS
    AH = 0Eh
    STACK:    WORD    process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=0Bh"VMiX",AH=0Dh"VMIX"
--------T-150E-------------------------------
INT 15 - MultiDOS Plus - ENABLE MULTITASKING
    AH = 0Eh
SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AH=20h"MultiDOS"
--------d-150F-------------------------------
INT 15 C - SYSTEM - FORMAT UNIT PERIODIC INTERRUPT (PS ESDI drives only)
    AH = 0Fh
    AL = phase code
        00h reserved
        01h surface analysis
        02h formatting
Return: CF clear if formatting should continue
    CF set if formatting should terminate
Note:    called during ESDI drive formatting after each cylinder is completed
SeeAlso: INT 13/AH=1Ah
--------O-150F-------------------------------
INT 15 - VMiX - "sys_getqkey" - GET KEY FIELD OF QUEUED ELEMENT
    AH = 0Fh
    STACK:    WORD    queue ID (0 = process queue, 1 = object q, 3 = type q)
        WORD    ID of element in queue chain
Return: AX = key
SeeAlso: AH=0Ah"VMiX"
--------T-150F-------------------------------
INT 15 - MultiDOS Plus - EXECUTE A MULTIDOS PLUS COMMAND
    AH = 0Fh
    DS:BX -> ASCIZ command
Return: after command has been processed
Notes:    specified string is executed as if it had been typed at the MultiDOS
      command prompt
    the task is placed on a queue which MultiDOS examines periodically and
      is suspended until MultiDOS has processed the command
    all lowercase characters up to the first blank are converted to upper
      case within the given buffer
--------O-1510-------------------------------
INT 15 - VMiX - "sys_virtual" - EXECUTE CONFORMING FUNCTION IN PROTECTED MODE
    AH = 10h
    STACK:    DWORD    pointer to function
          N WORDs    function args
Return: AX = function's return value??? (not specified in documentation)
Note:    while the function is executing, the following global descriptors are
      available:
        20h stack segment
        38h code segment of function
        40h data alias for function's code segment
      additional GDT descriptors can be allocated using AH=02h with
      function "assign gdt"
SeeAlso: AH=02h"VMiX",AH=51h"VMiX"
--------T-1510-------------------------------
INT 15 - MultiDOS Plus - TEST RESOURCE SEMAPHORE
    AH = 10h
    AL = semaphore number (00h-3Fh)
Return: AH = status
        00h semaphore not in use
        01h semaphore owned by another task
        02h invalid semaphore number
        03h semaphore owned by caller
SeeAlso: AH=02h"MultiDOS",AH=0Dh"MultiDOS",AH=1Dh"MultiDOS"
--------Q-151000-----------------------------
INT 15 - TopView - "PAUSE" - GIVE UP CPU TIME
    AX = 1000h
Return: after other processes run
Note:    under DESQview, if the process issuing this call has hooked INT 08h,
      the current time-slice is set to expire at the next clock tick rather
      than immediately
SeeAlso: AH=00h"MultiDOS",AX=5305h,INT 21/AH=89h,INT 21/AH=EEh"DoubleDOS"
SeeAlso: INT 2F/AX=1680h,INT 60/DI=0106h,INT 62/AH=01h,INT 7A/BX=000Ah
SeeAlso: INT 7F/AH=E8h
--------Q-151001-----------------------------
INT 15 - TopView - "GETMEM" - ALLOCATE "SYSTEM" MEMORY
    AX = 1001h
    BX = number of bytes to allocate
Return: ES:DI -> block of memory or 0000h:0000h (DV v2.26+)
    AX = status (DV v2.42)
        0000h successful
        0001h failed
Note:    use SETERROR (AX=DE15h) to avoid a user prompt if there is insufficient
      common memory.  Under DV v2.42, this call never generates a user
      prompt regardless of the SETERROR value; instead, it always returns
      AX=0001h and ES:DI=0000h:0000h if out of memory
SeeAlso: AX=1002h,AX=102Eh,AX=DE0Ch,AX=DE15h
--------Q-151002-----------------------------
INT 15 - TopView - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY
    AX = 1002h
    ES:DI -> previously allocated block
Return: block freed
SeeAlso: AX=1001h,AX=DE0Dh
--------Q-151003-----------------------------
INT 15 - TopView - "PRINTC" - DISPLAY CHARACTER/ATTRIBUTE ON SCREEN
    AX = 1003h
    BH = attribute
    BL = character
    DX = segment of object handle for window
Note:    BX=0 does not display anything, it only positions the hardware cursor
--------Q-1510-------------------------------
INT 15 - TopView - UNIMPLEMENTED IN DV 2.x
    AH = 10h
    AL = 04h thru 12h
Return: pops up "Programming error" window in DV 2.x
--------Q-151013-----------------------------
INT 15 - TopView - "GETBIT" - DEFINE A 2ND-LEVEL INTERRUPT HANDLER
    AX = 1013h
    ES:DI -> FAR service routine
Return: BX = bit mask indicating which bit was allocated
         0000h if no more bits available
SeeAlso: AX=1014h,AX=1015h
Note:    only a few TopView/DESQview API calls are allowed during a hardware
      interrupt; if other calls need to be made, the interrupt handler
      must schedule a 2nd-level interrupt with "SETBIT" (AX=1015h)
--------Q-151014-----------------------------
INT 15 - TopView - "FREEBIT" - UNDEFINE A 2ND-LEVEL INTERRUPT HANDLER
    AX = 1014h
    BX = bit mask from INT 15/AX=1013h
SeeAlso: AX=1013h,AX=1015h
--------Q-151015-----------------------------
INT 15 - TopView - "SETBIT" - SCHEDULE ONE OR MORE 2ND-LEVEL INTERRUPTS
    AX = 1015h
    BX = bit mask for interrupts to post
Return: indicated routines will be called: (DV 2.0x) at next task switch
                       (DV 2.2x) immediately on return from
                             hardware interrupt
SeeAlso: AX=1013h,AX=1014h
Notes:    this is one of the few TopView calls which are allowed from a hardware
      interrupt handler
    the handler will be called with ES containing the segment of the handle
      of the next task to be executed; on return, ES must be the segment of
      a task handle
--------Q-151016-----------------------------
INT 15 - TopView - "ISOBJ" - VERIFY OBJECT HANDLE
    AX = 1016h
    ES:DI = possible object handle
Return: BX = status
        FFFFh if ES:DI is a valid object handle (see #0255)
        0000h if ES:DI is not
Note:    under DESQview versions prior to 2.50, an object handle is always a
      pointer to the object; for versions 2.50 and up, only task handles
      are always pointers (other handles may consist of a unique object
      number and offset into DESQview's common memory)
SeeAlso: AX=DE14h,AX=DE2Bh,AX=DE2Ch

(Table 0254)
Values for DESQview object type:
 00h    window/task
 01h    mailbox
 02h    keyboard
 03h    timer
 04h    pointer
 05h    panel
 06h    objectq

Format of DESQview object:
Offset    Size    Description    (Table 0255)
 00h    WORD    offset in common memory of previous object of same type
 02h    WORD    offset in common memory of next object of same type
 04h    WORD    signature FEDCh (DV 2.42-)
        signature FEDCh or object number (DV 2.50+)
 06h    WORD    object type (see #0254)
 08h    DWORD    object handle to return to caller
 0Ch    DWORD    canonicalized object address (segment = common memory)
 10h    WORD    offset in common memory of owning task
        (0000h for unowned OBJECTQs)
 12h    WORD    mapping context
        offset in common memory of mapping context record (see #0257)
    remainder varies by object type and DESQview version
---v2.42 keyboard object---
 14h    WORD    flag bits (see also AH=12h/BH=0Ah"OBJECT")
        bit 15: keyboard opened
 16h  4 BYTEs    ???
 1Ah    WORD    priority in OBJECTQ???
 1Ch    ...
 25h    WORD    offset in common memory of ??? task
 27h  4 BYTEs    ???
---v2.42 objectq object---
 14h    WORD    flag bits (see also AH=12h/BH=0Ah"OBJECT")
        bit 15: OBJECTQ opened
 16h  2 BYTEs    ???
 18h    WORD    offset in common memory of ??? task
 1Ah  6 BYTEs    ???
---v2.42 mailbox object---
 14h    WORD    flag bits (see also AH=12h/BH=0Ah"OBJECT")
        bit 15: mailbox opened
 1Ah    WORD    priority in OBJECTQ???
 1Ch  6 BYTEs    ???
 22h    WORD    offset in common memory of mailbox name (counted string)
        0000h if no name
     <= 5 BYTEs ???
---v2.22-2.42,2.52,2.60 window/task object---
 14h    BYTE    00h window, 01h task
 15h    BYTE    internal (not Switch menu) window number???
 16h    BYTE    internal (not Switch menu) window number???
 17h    WORD    segment of internal window record (see #0258)
 19h  2 BYTEs    ???
 1Bh    BYTE    cursor row
 1Ch    BYTE    cursor column
 1Dh    BYTE    visible window origin, row
 1Eh    BYTE    visible window origin, column
 1Fh    BYTE    window height (logical)
 20h    BYTE    window width (logical)
 21h    BYTE    window position, row
 22h    BYTE    window position, column
 23h    BYTE    window height (visible)
 24h    BYTE    window width (visible)
 25h    BYTE    row of top of frame (or window if unframed)
 26h    BYTE    column of left of frame (or window if unframed)
 27h    BYTE    window height (physical, including frame)
 28h    BYTE    window width (physical, including frame)
 29h    BYTE    unzoomed visible origin, row (00h before first zoom)
 2Ah    BYTE    unzoomed visible origin, column (00h before first zoom)
 2Bh    BYTE    unzoomed window position, row (00h before first zoom)
 2Ch    BYTE    unzoomed window position, column (00h before first zoom)
 2Dh    BYTE    unzoomed window height (00h before first zoom)
 2Eh    BYTE    unzoomed window width (00h before first zoom)
        unzoomed parameters above are updated when window is zoomed
          to full screen
 2Fh    BYTE    ??? initially logical window height
 30h    BYTE    ??? initially logical window width
 31h  2 BYTEs    ???
 33h    BYTE    minimum height of window
 34h    BYTE    minimum width of window
 35h    BYTE    maximum height of window
 36h    BYTE    maximum width of window
 37h  3 BYTEs    ???
 3Ah  8 BYTEs    window frame characters: ul,ur,ll,lr,t,b,l,r
 42h 24 BYTEs    attributes???
 5Ah  8 BYTEs    window frame characters: ul,ur,ll,lr,t,b,l,r
 62h  3 BYTEs    ???
 65h    BYTE    ??? bitflags
 66h    BYTE    bit 0: window is zoomed
 67h    BYTE    ???
 68h    WORD    offset in common memory of window name or 0000h if untitled
 6Ah    WORD    length of window name
 6Ch  2 BYTEs    ???
 6Eh    WORD    offset of logical cursor in window (in character cells)
 70h    DWORD    pointer to field table for window
 74h    BYTE    ???
 75h  2 BYTEs    ???
 77h    BYTE    number of last-visited field
 78h    DWORD    pointer to field table entry for last-visited field
 7Ch  3 BYTEs    ???
 7Fh    BYTE    select field marker character
 80h    BYTE    ??? bit flags
        bit 0: allow ECh window stream opcode to change reverse logattr
        bit 1: alternate field processing mode selected
 81h    BYTE    ???
 82h    DWORD    notification function (manager stream opcode 8Ah)
        no notification if segment = 0000h
 86h    DWORD    notification argument (manager stream opcode 8Bh)
 8Ah    WORD    offset in common memory of ??? window object or 0000h
 8Ch    WORD    offset in common memory of ??? window object or 0000h
 8Eh    WORD    offset in common memory of ??? window object or 0000h
 90h    BYTE    ??? bitflags
 91h    BYTE    ???
 ---task object only
 92h    BYTE    bit flags (bits 0-4)
 93h    BYTE    character for ??? (default 20h)
 94h    BYTE    ??? flag
 95h    WORD    offset in common memory of ???
 97h  2 BYTEs    ???
 99h    WORD    ???
 9Bh    BYTE    ??? bit flags
        bit 3: ???
        bit 6: perform protected-attribute processing on select fields
 9Ch    BYTE    ???
 9Dh    WORD    offset in common memory of current register save record
          (see #0256).  No register save record in use if < 01C0h
 9Fh    WORD    offset in common memory of task's keyboard object
 A1h    WORD    offset in common memory of task's OBJECTQ object
 A3h    WORD    offset in common memory of task's mailbox object
 A5h    WORD    semaphore: FFFFh if on user stack, else on task's private stack
 A7h    DWORD    user's SS:SP
 ABh    WORD    task's private SP (SS read from offset 0Ah)
 ADh  6 BYTEs    ???
 B3h    BYTE    ??? bit flags
        bit 0: run in foreground only
 B4h    BYTE    ???
 B5h    BYTE    ??? bitflags
 B6h    BYTE    task status (see #0356 at AX=DE2Ch)
 B7h  9 BYTEs    ???
 C0h    WORD    head pointer for keyboard buffer (wraps back to 00h after 80h)
 C2h    WORD    tail pointer for keyboard buffer (wraps back to 00h after 80h)
 C4h  2 BYTEs    ??? (0000h)
 C6h    WORD    segment of keyboard buffer for task
 C8h    WORD    offset in common memory of ??? keyboard object
 CAh    BYTE    ???
---v2.22-2.42
 CBh    WORD    offset in common memory of ??? object
 CEh    BYTE    ??? flag
 CFh    WORD    offset in common memory of default notify window for task
          or 0000h if none
 D1h  4 BYTEs    ???
 D5h    BYTE    window number on Switch Window menu
 D6h  5 BYTEs    ???
 DBh    WORD    offset in common memory of ??? object
 DDh  2 BYTEs    ???
 DFh    WORD    API level for task
 E1h    WORD    offset in common memory of object task is waiting on if task
          status is 'waiting', else 0000h
 E7h    WORD    segment of ???
 E9h 4    BYTEs    ???
 EDh    WORD    EMS handle of virtualization buffer, 0000h if no virtualization
 F1h 12 BYTEs    ???
 FBh    WORD    ???
 FDh    BYTE    ???
 FFh 12 BYTEs    ???
10Bh    DWORD    pointer to process record (see #0259,#0260)
10Dh 10 BYTEs    ???
119h    DWORD    SS:SP for ???
11Dh  4 BYTEs    ???
121h    DWORD    pointer to ???
125h 25 BYTEs    ???
13Eh    DWORD    pointer to ??? in system memory
---v2.22
142h  3 BYTEs    ???
145h        task's default keyboard object
---v2.42
142h    DWORD    pointer to first task instance data record in system memory
148h    DWORD    pointer to last task instance data record in system memory
        (see #0261)
14Ah    BYTE    ???
14Dh 42 BYTEs    task's default keyboard object
177h 32 BYTEs    task's ObjectQ object
197h 41 BYTEs    task's default mailbox object
1C0h 24 BYTEs    first register save record
450h    --    default top of private stack
---v2.52 (probably all DV/X)
Same as v2.60 below except there is an extra 29 bytes inserted somewhere
  before offset 9Fh, but not yet known exactly where.  Also, for the WAIT_ON
  field (v2.60 offset E3h), some X apps (probably waiting on a socket) have
  0000h even when waiting.
---v2.60
 CBh    WORD    ??? (added in 2.50 - rest is same as 2.42)
 CDh    WORD    offset in common memory of ??? object
 D0h    BYTE    ??? flag
 D1h    WORD    offset in common memory of default notify window for task
          or 0000h if none
 D3h  4 BYTEs    ???
 D7h    BYTE    window number on Switch Window menu
 D8h  5 BYTEs    ???
 DDh    WORD    offset in common memory of ??? object
 DFh  2 BYTEs    ???
 E1h    WORD    API level for task
 E3h    WORD    If status at B6h=waiting, offset in common memory of object
          that task is waiting on, else 0000h. (Task with CPU also
          has 0000h here)
 E9h    WORD    segment of ???
 EBh 4    BYTEs    ???
 EFh    WORD    EMS handle of virtualization buffer, 0 if no virtualization
 F3h 12 BYTEs    ???
 FDh    WORD    ???
 FFh    BYTE    ???
101h  8 BYTEs    ???
109h    DWORD    pointer to process record in system memory
10Dh 14 BYTEs  ???
11Bh    DWORD    SS:SP for ???
11Fh  4 BYTEs    ???
123h    DWORD    pointer to ???
127h 25 BYTEs    ???
140h    DWORD    pointer to ??? in system memory
144h    DWORD    pointer to first task instance data record in system memory
148h    DWORD    pointer to last task instance data record in system memory
        (from INT 15/AX=DE27h, see below)
14Ch    BYTE    ???
14Eh 42 BYTEs    task's default keyboard object
179h 32 BYTEs    task's ObjectQ object
199h 41 BYTEs    task's default mailbox object
1C2h 24 BYTEs    first register save record
452h    --    default top of private stack

Format of DESQview Register Save Record:
Offset    Size    Description    (Table 0256)
 00h    WORD    AX
 02h    WORD    BX
 04h    WORD    CX
 06h    WORD    DX
 08h    WORD    DI
 0Ah    WORD    SI
 0Eh    WORD    DS
 10h    WORD    ES
 12h    DWORD    return address
 16h    WORD    original flags

Format of DESQview mapping context record:
Offset    Size    Description    (Table 0257)
 00h    WORD    lowest segment in process's memory
        (often start of system memory chain)
 02h    WORD    size of process's memory in paragraphs
 04h    BYTE    flag: 00h if process swapped out, 01h otherwise
 05h    BYTE    flag: 00h if allocated in conventional memory, 01h if EMS
 06h  2 BYTEs    ???
 08h    WORD    EMS handle if in EMS, else 0
 0Ah  2 BYTEs    ??? (nonzero if system memory resides in shared mem???)
 0Ch    WORD    segment of system memory block that contains process record,
          referenced from segment of start of system memory chain
 0Eh    BYTE    ???
 0Fh    WORD    size of system memory block that contains process record
          and DOS memory in paragraphs
 11h    BYTE    bit flags
        Bit 0: Swapped out???
        Bit 1: ???
        Bit 2: Swapped out???
 12h    BYTE    ???
 13h    BYTE    reference count
 ---v2.31
 14h 10 BYTEs    ???
 1Eh    WORD    segment of process record
 20h  2 BYTEs    ???
 22h    WORD    segment of ???    (in first free system memory block???)
 24h    WORD    segment of end of system memory chain
 26h    WORD    segment of start of system memory chain
 28h  8 BYTEs    ???
 2Ah    DWORD    pointer to ??? (process record???)
 2Dh 10 BYTEs    ???
 37h    BYTE    lowest interrupt vector to save on context switch
 38h    BYTE    highest interrupt vector to save on context switch
 39h    WORD    offset in common memory of main task with this context
 3Ah 12 BYTEs    ???
 46h    BYTE    internal mapping context number
 47h 12 BYTEs    ???
 ---v2.5x-2.60
 14h  6 BYTEs    ???
 1Ah    WORD    segment of process record
 1Ch  2 BYTEs    ???
 1Eh    WORD    segment of first free system memory block
 20h    WORD    segment of start of system memory chain
 22h    WORD    segment of end of system memory chain
 24h 8    BYTEs    ???
 2Ch    DWORD    pointer to ??? (1 segment into process record???)
 30h 3    BYTEs    ???
 33h    WORD    Offset in common memory of main task with this context
 35h 7    BYTEs    ???
 3Ch    BYTE    internal mapping context number
 3Dh 14 BYTEs    ???
 4Bh    WORD    first DOS memory segment (first MCB segment+1)
 4Dh    BYTE    ??? (flag???)
 ---v2.53 (2.5x???)
 4Eh 12 BYTEs    ???
 ---v2.60
 4Eh    WORD    segment of script buffer (see #0262)
 50h  6 BYTEs    ???

Format of DESQview Internal Window Record (v2.31-2.60):
Offset    Size    Description    (Table 0258)
 00h    BYTE    internal window number???
 01h    BYTE    display page???
 02h    BYTE    video mode
 03h  3 BYTEs    ???
 06h    BYTE    logical window height
 07h    BYTE    logical window width
 08h    DWORD    pointer to text video buffer
 0Ch 116 BYTEs    ???

Format of DESQview process record (v2.31):
Offset    Size    Description    (Table 0259)
-470h 13 BYTEs    filename of ??? Script
-463h 1117 BYTEs ??? (script buffer???)
 -6h  6 BYTEs    ???
 00h    WORD    segment of parent PSP in process
 02h  5 BYTEs    ???
 07h    WORD    segment of current PSP in process
 09h    WORD    segment of first MCB in process
 0Bh 13 BYTEs    ???
 18h 1024 BYTEs process's interrupt vector table
418h 376 BYTEs    ???
590h        first MCB in process

Format of DESQview process record (v2.52-v2.60) (probably also 2.5x):
Offset    Size    Description    (Table 0260)
 00h 28 BYTEs    EXE header of last EXE, ??? if last program run was COM
 1Ch ??? BYTEs    overwritten with ASCIZ filename of last program run (EXE/COM)
11Ch    WORD    segment of parent PSP in process
11Eh  4 BYTEs    ???
122h    WORD    segment of current PSP
124h    WORD    segment of current PSP
126h    WORD    segment of first MCB in process
128h  4 BYTEs    ???
12Ch    DWORD    pointer to first process instance data record in system memory
130h    DWORD    pointer to last process instance data record in system memory
        (from INT 15/AX=DE27h, see below)
134h  8 BYTEs    ???
13Ch    WORD    size of current environment
13Eh    WORD    segment of current environment
140h    WORD    segment of current PSP
142h    DWORD    entry point of current program
146h 10 BYTEs    ???
---v2.52 (v2.5x???)
150h    BYTE    ???
151h    WORD    segment of parent PSP in process
153h    WORD    ???
155h    WORD    ???
157h    WORD    ???
159h  4 BYTEs    ???
15Dh    WORD    segment of current environment
15Fh    WORD    segment of current PSP
161h    WORD    segment of ???
162h    WORD    ???
164h  3 BYTEs    ???
168h 1024 BYTEs process's interrupt vector table
568h 120 BYTEs    ???
5E0h        first MCB in process
---v2.60
150h    WORD    segment of parent PSP in process
152h    WORD    ???
154h    WORD    ???
156h    WORD    ???
158h  4 BYTEs    ???
15Ch    WORD    segment of current environment
15Eh    WORD    segment of current PSP
160h    WORD    segment of ???
162h    WORD    ???
164h 1024 BYTEs process's interrupt vector table
564h 108 BYTEs    ???
5D0h        first MCB in process

Format of DESQview task or process instance data record (v2.5x???, v2.60):
Offset    Size    Description    (Table 0261)
 00h    DWORD    pointer to next record of same type or 00000000
 04h    DWORD    pointer to previous record of same type or 00000000
 08h    DWORD    pointer to source area of memory during restore state
 0Ch    WORD    number of bytes to save/restore
 0Eh    DWORD    pointer to destination area of memory during restore state
 12h    WORD    ??? (0)
 14h  N BYTEs    source memory buffer during restore state

Format of DESQview script buffer (v2.60):
Offset    Size    Description    (Table 0262)
 00h 13 BYTEs    ASCIZ Script filename
 0Dh 80 BYTEs    ???
 5Eh  N BYTEs    script records (see #0263)

Format of one DESQview script record (v2.60):
Offset    Size    Description    (Table 0263)
 00h    BYTE    signature 12h
 01h 18 BYTEs    blank-padded script name
 13h    BYTE    ASCII code of key attached to script or 0 if non-ASCII key
 14h    BYTE    scan code of key attached to script if non-ASCII, else 0
 15h    BYTE    ???
 16h    WORD    size of script in bytes
 18h  N    BYTEs    script (ASCII code of each keystroke; if 0, next byte is
          scan code of non-ASCII key)

Format of DESQview Common Memory Header (v2.31-2.60):
Offset    Size    Description    (Table 0264)
 00h    WORD    offset of lowest used block
 02h    WORD    bytes of commom memory, including header
 04h    WORD    offset of first free block
 06h  N BYTEs    size depends of DV version, ??? (DVP buffer???)
Note:    the above is located at the beginning of the commom memory segment
SeeAlso: #0265,#0266,#0271

Format of DESQview Free block header:
Offset    Size    Description    (Table 0265)
 00h    WORD    size of block in bytes including header
 02h    WORD    offset of next free block
 04h  N BYTEs    free block
SeeAlso: #0264,#0266

Format of DESQview Used block header:
Offset    Size    Description    (Table 0266)
 00h    WORD    size of block in bytes including header
 02h  N BYTEs    used block
SeeAlso: #0264,#0265
--------Q-151017-----------------------------
INT 15 - TopView - UNIMPLEMENTED IN DV 2.x
    AX = 1017h
Return: pops up "Programming error" window in DV 2.x
--------Q-151018-----------------------------
INT 15 - TopView - "LOCATE" - FIND WINDOW AT A GIVEN SCREEN LOCATION
    AX = 1018h
    BH = column
    BL = row
    ES = segment of object handle for window below which to search
         0000h = start search with topmost window
Return: ES = segment of object handle for window which is visible at the
           indicated position, or covered by indicated window
        0000h if no window
SeeAlso: AX=1023h,AX=1024h
--------Q-151019-----------------------------
INT 15 - TopView - "SOUND" - MAKE TONE
    AX = 1019h
    BX = frequency in Hertz (0000h = silence)
    CX = duration in clock ticks (18.2 ticks/sec)
Return: immediately, tone continues to completion
Notes:    if another tone is already playing, the new tone does not start until
      completion of the previous one.  Up to 32 tones may be queued before
      the process is blocked until a note completes.
    in DV 2.00, the lowest tone allowed is 20 Hz
    if CX = 0, the current note is cancelled; if BX = 0 as well, all queued
      notes are also cancelled
SeeAlso: AH=82h"HUNTER",INT 16/AH=73h
--------Q-15101A-----------------------------
INT 15 - TopView - "OSTACK" - SWITCH TO TASK'S INTERNAL STACK
    AX = 101Ah
Return: stack switched
Notes:    this call may not be nested; a second call must be preceded by a call
      to "USTACK" (AX=1025h)
    while TopView requires many API calls to be executed while on the
      task's internal stack, DESQview allows those calls to be executed
      regardless of the current stack
SeeAlso: AX=1025h
--------Q-15101B-----------------------------
INT 15 - TopView - "BEGINC" - BEGIN CRITICAL REGION
    AX = 101Bh
Return: task-switching temporarily disabled
Notes:    will not task-switch until "ENDC" (AX = 101Ch) called unless task
      voluntarily releases the CPU (upon regaining the CPU, task-switching
      will again be disabled)
    suspends the caller until DOS is free
SeeAlso: AH=0Dh"MultiDOS",AX=101Ch,AX=DE13h,AX=DE1Ch,INT 2F/AX=1681h
SeeAlso: INT 60/DI=0602h
--------Q-15101C-----------------------------
INT 15 - TopView - "ENDC" - END CRITICAL REGION
    AX = 101Ch
Return: task-switching enabled
Note:    this API call may be made from within a hardware interrupt handler
SeeAlso: AX=101Bh,AX=DE13h,AX=DE1Bh,INT 2F/AX=1682h,INT 60/DI=0603h
--------Q-15101D-----------------------------
INT 15 - TopView - "STOP" - STOP TASK
    AX = 101Dh
    ES = segment of object handle for task to be stopped
         (== handle of main window for that task)
Return: indicated task will not get any CPU time until restarted with AX=101Eh
Note:    once a task has been stopped, additional "STOP"s are ignored
BUG:    in DV 2.00, this function is ignored unless the indicated task is the
      current task
SeeAlso: AX=101Eh,AX=102Bh,AH=12h"VMiX",INT 21/AH=81h
--------Q-15101E-----------------------------
INT 15 - TopView - "START" - START TASK
    AX = 101Eh
    ES = segment of object handle for task to be started
         (== handle of main window for that task)
Return: indicated task is started up again
Note:    once a task has been started, additional "START"s are ignored
SeeAlso: AX=101Dh,AX=102Bh,INT 21/AH=82h
--------Q-15101F-----------------------------
INT 15 - TopView - "DISPEROR" - POP-UP ERROR WINDOW
    AX = 101Fh
    BX = bit fields
         bits 0-12: number of characters to display
         bits 13,14: which mouse button may be pressed to remove window
             00 = either
             01 = left
             10 = right
             11 = either
         bit 15: beep if 1
    ES:DI -> text of message
    CH = width of error window (0 = default)
    CL = height of error window (0 = default)
    DX = segment of object handle
Return: BX = status: 1 = left button, 2 = right, 27 = ESC pressed
Note:    window remains on-screen until ESC or indicated mouse button is pressed
--------Q-151020-----------------------------
INT 15 - TopView - UNIMPLEMENTED IN DV v2.00+
    AX = 1020h
Return: pops up "Programming error" window in DV v2.00+
--------Q-151021-----------------------------
INT 15 - TopView - "PGMINT" - INTERRUPT ANOTHER TASK
    AX = 1021h
    BX = segment of object handle for task to interrupt (not self)
    DX:CX -> FAR routine to jump to next time task is run
Return: nothing
Notes:    the FAR routine is entered with the current ES, DS, SI, DI, and BP
      values, using the task's internal stack (see AX=101Ah); only SS:SP
      needs to be preserved
    multiple PGMINTs to a single task are processed last-in first-out
    if the other task is in a DOS or DV API call, the interruption will
      occur on return from that call
--------Q-151022BX0000-----------------------
INT 15 - TopView - "GETVER" - GET VERSION
    AX = 1022h
    BX = 0000h
Return: BX nonzero, TopView or compatible loaded
    (BL = major version, BH = minor version)
Notes:    TaskView returns BX = 0001h, DESQview v2.00+ returns BX = 0A01h
--------Q-151023-----------------------------
INT 15 - TopView - "POSWIN" - POSITION WINDOW
    AX = 1023h
    BX = segment of object handle for parent window within which to
           position the window (0 = full screen)
    ES = segment of object handle for window to be positioned
    DL = general window position (see #0267)
    CH = number of columns to offset from position specified by DL
    CL = number of rows to offset from position specified by DL
Return: nothing

Bitfields for TopView general window position:
Bit(s)    Description    (Table 0267)
 0,1    horizontal position
    00 = current, 01 = center, 10 = left, 11 = right
 2,3    vertical position
    00 = current, 01 = center, 10 = top, 11 = bottom
 4    don't redraw screen if set
 5-7    not used
--------Q-151024-----------------------------
INT 15 - TopView - "GETBUF" - GET VIRTUAL SCREEN INFO
    AX = 1024h
    BX = segment of object handle for window
          (0 = use default)
Return: ES:DI -> virtual screen
    CX = size of virtual screen in bytes
    DL = 00h text screen
         01h graphics screen
SeeAlso: INT 10/AH=FEh,INT 21/AH=2Bh/CX=4445h
--------Q-151025-----------------------------
INT 15 - TopView - "USTACK" - SWITCH BACK TO USER'S STACK
    AX = 1025h
Return: stack switched back
Notes:    call only after having switched to internal stack with AX=101Ah
    while TopView requires many API calls to be executed while on the
      task's private stack, DESQview allows those calls to be executed
      regardless of the current stack
SeeAlso: AX=101Ah
--------Q-1510-------------------------------
INT 15 - DESQview (TopView???) - UNIMPLEMENTED IN DV 2.x
    AH = 10h
    AL = 26h thru 2Ah
Return: pops up "Programming error" window in DV 2.x
--------Q-15102B-----------------------------
INT 15 - DESQview v2.00+ (TopView???) - "POSTTASK" - AWAKEN TASK
    AX = 102Bh
    BX = segment of object handle for task
Return: nothing
Note:    forces a task which is waiting on its objectq to continue by placing
      the handle for the task on the objectq
SeeAlso: AX=101Dh,AX=101Eh,INT 21/AH=82h
--------Q-15102C-----------------------------
INT 15 - DESQview v2.00+ - "NEWPROC" - START NEW APPLICATION IN NEW PROCESS
    AX = 102Ch
    ES:DI -> contents of .PIF/.DVP file (see #0268)
    BX = size of .PIF/.DVP info
Return: BX = segment of object handle for new task
         0000h on error
SeeAlso: AX=DE24h,INT 21/AH=4Bh

Format of .PIF/.DVP file:
Offset    Size    Description    (Table 0268)
 00h    BYTE    reserved (0)
 01h    BYTE    checksum of bytes 02h through 170h
 02h 30 BYTEs    blank-padded program title
 20h    WORD    maximum memory to allocate to partition in KB
 22h    WORD    minimum memory required in KB
 24h 64 BYTEs    ASCIZ program pathname
 64h    BYTE    default drive letter ('A',...)
 65h 64 BYTEs    ASCIZ default directory name
 A5h 64 BYTEs    ASCIZ program parameters
 E5h    BYTE    initial screen mode (0-7) (see also offset 189h)
 E6h    BYTE    number of text pages used
 E7h    BYTE    number of first interrupt to save
 E8h    BYTE    number of last interrupt to save
 E9h    BYTE    rows in virtual screen buffer
 EAh    BYTE    columns in virtual screen buffer
 EBh    BYTE    initial window position, row
 ECh    BYTE    initial window position, column
 EDh    WORD    system memory in KB
 EFh 64 BYTEs    ASCIZ shared program name
12Fh 64 BYTEs    ASCIZ shared program data file
16Fh    BYTE    flags1
        bit 7: writes text directly to screen
        bit 6: runs in foreground only (see also offset 184h)
        bit 5: uses math coprocessor
        bit 4: accesses system keyboard buffer directly
        bits 3-1: reserved (0)
        bit 0: swappable
170h    BYTE    flags2
        bit 6: uses command-line parameters in field at A5h
        bit 5: swaps interrupt vectors
---information unique to .DVP files---
171h  2 BYTEs    keys to use on open menu
173h    WORD    size of script buffer in bytes
175h    WORD    automatically give up CPU after this many tests for keyboard
          input in one clock tick (default 0 = never)
177h    BYTE    nonzero = "uses own colors"
178h    BYTE    nonzero if application swappable
179h  3 BYTEs    reserved (0) according to Quarterdeck documentation
        in actual .DVP files, frequently 01h
17Ch    BYTE    nonzero to automatically close on exit (see also offset 18Bh)
17Dh    BYTE    nonzero if copy-protect floppy is required
---information unique to DESQview 2.0+---
17Eh    BYTE    .DVP version number
        00h DESQview v1.2+
        01h DESQview v2.0+
        02h DESQview v2.2+
17Fh    BYTE    reserved (0)
180h    BYTE    initial number of rows in physical window
181h    BYTE    initial number of columns in physical window
182h    WORD    maximum expanded memory to allow, in KB
184h    BYTE    flags3
        bit 7: automatically assign window position
        bit 5: maximum memory value has been specified
        bit 4: disallow "Close" command
        bit 3: foreground-only when doing graphics
            set by DV 2.3+ when "Runs in Background" = "D" (undoc)
        bit 2: don't virtualize (see also offset 18Bh)
        bit 1: foreground-only during DOS calls
            set by DV 2.3+ when "Runs in Background" = "D" (undoc)
185h    BYTE    keyboard conflict level (0-4 for DV<2.26, 00h-0Fh for DV2.26+)
        (see #0269)
186h    BYTE    number of graphics pages used
187h    WORD    extra system memory size
189h    BYTE    initial screen mode (FFh = default) (overrides offset E5h)
---information unique to DESQview 2.2+---
18Ah    BYTE    serial port usage
        FFh uses all serial ports
        00h no serial ports
        01h only COM1
        02h only COM2
18Bh    BYTE    flags4
        bit 7: automatically close application on exit if .COM or .EXE
            specified (see also offset 17Ch)
        bit 6: swappable if not using serial ports
        bit 5: start program with window hidden (v2.26+)
        bit 4: start program in background (v2.26+)
        bit 3: virtualize text (see also offset 184h)
        bit 2: virtualize graphics (see also offset 184h)
        bit 1: share CPU when foreground
        bit 0: share EGA when foreground and zoomed
18Ch    BYTE    protection level for 386 machines
18Dh 19 BYTEs    reserved (0) for regular DESQview
---information unique to DESQview/X 1.0---
18Dh    BYTE    X flags
        bits 3-7: unused (0)
        bit 2: don't display wait message when opening window
        bit 1: don't display DOS window
        bit 0: (XNEWPROC) use DOS client layer (DOS-to-X)
               (NEWPROC) inherit DOS client layer usage
18Eh    BYTE    X keyboard behavior (0-3)
18Fh    BYTE    font scaling
        00h fixed fonts
        01h scalable fonts
190h 10 BYTEs    reserved (0)
19Ah    WORD    length of data follownig XDVP signature
19Ch  4 BYTEs    signature "XDVP"
1A0h  N BYTEs    list of variable length records (see #0270)

Bitfields for DESQview keyboard conflict level:
Bit(s)    Description    (Table 0269)
 3    save/restore entire INT 09 handler state every taskswtch
 2    take special precautions for programs which read the BIOS keyboard
      buffer directly from memory
 1    never indicate keystroke available during scripts/xfers
 0    only indicate keystroke available every sixth poll

Format of DESQview/X variable length record:
Offset    Size    Description    (Table 0270)
 00h    WORD    length of following record, 0000h if end of record list
 02h    BYTE    record type
        01h script filename, up to 64 characters
        02h command-line parameters (allows >64 characters on cmdline)
        03h environment inheritance
        04h environment string
        05h starting window position
---types 01h,02h,04h---
 03h  N BYTEs    ASCII data
---type 03h---
 03h    BYTE    inheritance
        00h do not inherit
        01h inherit environment
---type 05h---
 03h  N BYTEs    ASCII copy of fields as typed into DVPMAN, separated by commas:
        starting row, starting column, starting height, starting width
Note:    if there are multiple occurrences of record types 01h, 02h, or 03h,
      only the last instance of each type is used; multiple occurrences of
      type 04h are concatenated
--------Q-15102D-----------------------------
INT 15 - DESQview v2.00+ - "KMOUSE" - KEYBOARD MOUSE CONTROL
    AX = 102Dh
    BL = subfunction
         00h determine whether using keyboard mouse
        Return: BL = 00h using real mouse
                 01h using keyboard mouse
         01h turn keyboard mouse on
         02h turn keyboard mouse off
--------Q-15102E-----------------------------
INT 15 - DESQview v2.40+ - ALLOCATE SYSTEM MEMORY
    AX = 102Eh
    BX = number of bytes
Return: AX = status
        0000h successful
        ES:DI -> allocated system memory (see #0271)
        0001h failed
        ES:DI = 0000h:0000h
Note:    under DV 2.42, this call is identical to AX=1001h
SeeAlso: AX=1001h,AX=1002h,AX=DE0Ch

Format of DESQview system memory block header:
Offset    Size    Description    (Table 0271)
 00h    WORD    segment of next header or 0000h
 02h    WORD    segment of previous header or 0000h
 04h    WORD    size of block in paragraphs, including header
 06h    BYTE    availability flag (00h in use, 01h free)
Note:    this header is located one paragraph before the memory block proper
SeeAlso: #0264
--------Q-1511-------------------------------
INT 15 - TopView commands
    AH = 11h
    AL = various (except 17h)
Note:    in DESQview 2.x, these function calls are identical to AH=DEh, so
      see those below
SeeAlso: AH=DEh
--------T-1511-------------------------------
INT 15 - VMiX - "sys_system" - EXECUTE SHELL SYSTEM COMMANDS
    AH = 11h
    STACK:    DWORD    pointer to ASCIZ string containing a VMiX shell
            request (max len = 127)
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=0Ch"VMiX"
--------T-1511-------------------------------
INT 15 - MultiDOS Plus - TURN OFF AltZ TOGGLE
    AH = 11h
Note:    disables the Alt-Z MultiDOS command/program-selection hotkey
SeeAlso: AH=12h"MultiDOS"
Index:    hotkeys;MultiDOS Plus
--------Q-151117BX0000-----------------------
INT 15 - DESQview v2.20+ - "ASSERTMAP" - GET/SET MAPPING CONTEXT
    AX = 1117h
    BX = 0000h    get current mapping context without setting
         nonzero    set new mapping context
Return: BX = mapping context in effect before call
    interrupts enabled
Notes:    this function differs from AX = DE17h for DESQview v2.20 through 2.25
    mapping contexts determine conventional-memory addressability; setting
      a mapping context ensures that the associated program and data areas
      are in memory for access.  Usable by drivers, TSRs and shared
      programs.
    caller need not be running under DESQview, but must ensure that the
      stack in use will not be mapped out by the call
SeeAlso: AX=DE17h,INT 2F/AX=1685h
--------m-1511DE-----------------------------
INT 15 - DESQview - QEXT.SYS - INSTALLATION CHECK
    AX = 11DEh
Return: CF clear if installed
        AX = segment at which QEXT.SYS is located
Desc:    QEXT.SYS is Quarterdeck's HMA manager for DESQview; more recent
      versions also implement the XMS standard
Note:    a private entry point (see #0272) may be found by searching the
      beginning of the returned segment for the signature string
      "QUARTERDECK EXTENDED MEMORY MANAGER 286"; the word immediately
      prior to the signature contains the QEXT version number in BCD,
      and the word prior to that contains the offset within the QEXT
      code segment of the private entry point
SeeAlso: INT 2F/AX=4310h,INT 67/AH=3Fh

(Table 0272)
Call QEXT.SYS private entry point with:
    AH = 00h ???
    AH = nonzero ???
--------T-1512-------------------------------
INT 15 - VMiX - "sys_sleep" - PUT PROCESS TO SLEEP
    AH = 12h
    STACK:    WORD    process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=03h"MultiDOS",AX=101Dh,AH=13h"VMiX"
--------T-1512-------------------------------
INT 15 - MultiDOS Plus - TURN ON AltZ TOGGLE
    AH = 12h
Note:    enables the Alt-Z MultiDOS command/program-selection hotkey
SeeAlso: AH=11h"MultiDOS"
Index:    hotkeys;MultiDOS Plus
--------Q-1512--BH00-------------------------
INT 15 - TopView - SEND MESSAGE - "HANDLE" - RETURN OBJECT HANDLE
    AH = 12h
    BH = 00h
    BL = which handle to return
        00h handle in DWORD on top of stack
        01h current task's window handle
        02h given task's mailbox handle (task's handle on stack)
        03h current task's mailbox handle
        04h given task's keyboard handle (task's handle on stack)
        05h current task's keyboard object handle
        06h given task's OBJECTQ handle (task's handle on stack)
        07h current task's OBJECTQ handle
        08h      \
          thru > return 0000:0000 under DV < 2.26
        10h      /
        0Ch (2.26+) task owning object with handle in DWORD on top of stack
        0Dh (2.26+) task handle of owner (parent) of current task
Return: DWORD on top of stack is object handle
Note:    BL=0Ch,0Dh returns 00000000h if the object is not open (keyboard,
      mailbox, panel, pointer, and timer objects) or is an orphan (task,
      window)
SeeAlso: AH=12h/BH=02h,AH=12h/BH=80h
--------Q-1512--BH01-------------------------
INT 15 - TopView - SEND MESSAGE - "NEW" - CREATE NEW OBJECT
    AH = 12h
    BH = 01h
    BL = object type to create
        00h (DV 2.0x only) handle is DWORD on top of stack
        01h (DV 2.0x only) use task's window handle
        02h (DV 2.0x only) given task's mailbox (task's handle on stack)
        03h (DV 2.0x only) current task's mailbox
        04h (DV 2.0x only) given task's keyboard (task's handle on stack)
        05h (DV 2.0x only) current task's keyboard object
        08h WINDOW class
        09h MAILBOX class
        0Ah KEYBOARD class
        0Bh TIMER object (counts down 32-bit time in 10ms increments)
        0Fh POINTER object
        10h PANEL object
    STACK: (if window object or WINDOW class)
           DWORD address to jump to (no new task if high word == 0)
           DWORD (reserved) 0 = non-task window, FFFFh = task window
           DWORD bytes for task's private stack (FFFFh == default of 0100h)
           DWORD bytes system memory for input buffer for READ/READN
            (0 == none, -1 == default--same as logical window size)
           DWORD window size, columns
           DWORD window size, rows
           DWORD length of window title
           DWORD address of window title
Return: DWORD on top of stack is new object handle
Notes:    if a new task is created, it is started with
      AX = BX = SI = DI = BP = 0
      DX:CX = handle of parent task
      DS = ES = SS = segment of private stack (and new task's handle)
    new windows are orphans, inherit the colors/hidden status of the
      creating task's window, and are placed in the upper left hand corner
      of the screen but not automatically redrawn
    new keyboards are closed, and have all object bits cleared except for
      the hardware cursor bit
SeeAlso: AH=12h/BH=02h,AH=12h/BH=81h
--------Q-1512--BH02-------------------------
INT 15 - TopView - SEND MESSAGE - "FREE" - FREE AN OBJECT
    AH = 12h
    BH = 02h
    BL = object
        00h handle in DWORD on top of stack
        window: close window and free
        timer: free timer
        panel: free panel object
        pointer: free pointer
        01h task's window handle - kills task, never returns
        02h given task's mailbox (task's handle on top of stack)
        03h current task's mailbox
        04h given task's keyboard (task's handle on top of stack)
        05h current task's keyboard object
Notes:    when a window is freed, its keyboard and pointer objects are freed;
      task windows also free any mailbox, objectq, and panel objects held
      by the task and any child tasks
    if the keyboard being freed is the default keyboard for a task, this
      call is equivalent to CLOSE
    panel and pointer objects are automatically closed if open
SeeAlso: AH=12h/BH=01h,AH=12h/BH=0Dh,AH=12h/BH=82h
--------Q-1512--BH03-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDR" - GET HANDLE OF MESSAGE SENDER
    AH = 12h
    BH = 03h
    BL = object
        00h mailbox handle in DWORD on top of stack
        02h sender of last msg read from mailbox (task's handle on stack)
        03h sender of last msg read from current task's mailbox
Return: DWORD on stack is task handle of message sender
SeeAlso: AH=12h/BH=00h,AH=12h/BH=83h
--------Q-1512--BH03-------------------------
INT 15 - DESQview v2.26+ - "CONNECT" - CONNECT TWO WINDOWS
    AH = 12h
    BH = 03h
    BL = window to be connected
        00h handle of window to be attached in DWORD on top of stack
        01h attach current task's main window
    STACK: DWORD handle of window to attach to or 00000000h to detach
Return: STACK popped
Notes:    when two windows are connected, both will move if the user moves either
    multiple windows may be attached to a single window, but each window
      may only be attached to one window at a time
SeeAlso: AH=12h/BH=83h
--------Q-1512--BX0300-----------------------
INT 15 - TopView - SEND MESSAGE - "DIR" - GET PANEL FILE DIRECTORY
    AH = 12h
    BX = 0300h
    STACK: DWORD handle of panel object (see #0273)
Return: STACK: DWORD length of directory (always multiple of 14 bytes)
           DWORD address of directory
Note:    a null string is returned if the object is not open
SeeAlso: AH=12h/BX=0400h"APPLY",AH=12h/BH=83h

Format of TopView panel file:
Offset    Size    Description    (Table 0273)
 00h  2 BYTEs    C0h C3h
 02h    BYTE    number of panels in file
 03h    for each panel in file:
        8 BYTEs  blank-padded panel name
          DWORD  panel offset in file
          WORD   panel length
    data for panels (each consists of one or more window/query/manager
      streams); first byte of each panel must be 1Bh, fifth byte must be
      E5h
--------Q-1512--BH04-------------------------
INT 15 - TopView - SEND MESSAGE - "READ" - READ NEXT LOGICAL LINE OF WINDOW
    AH = 12h
    BH = 04h
    BL = window to read from
        00h handle is DWORD on top of stack
        01h use calling task's default window
        0Ch (DV 2.26+) default window of task owning handle on top of stack
        0Dh (DV 2.26+) default window of parent task of current task
Return: STACK:    DWORD number of bytes read
        DWORD address of buffer
Notes:    reading starts at the current logical cursor position; the cursor is
      updated to point at the character following the last one read
    any translucent blanks (FFh) which are visible on screen are changed
      to the character which is seen through them
    the string produced by the read is placed in an input buffer which may
      be reused by the next READ or READN of a window
    window stream opcodes D8h and D9h determine whether the read returns
      characters or attributes
SeeAlso: AH=12h/BH=05h"WINDOW",AH=12h/BH=12h,AH=12h/BH=84h
--------Q-1512--BH04-------------------------
INT 15 - TopView - SEND MESSAGE - "READ" - GET NEXT RECORD FROM OBJECT
    AH = 12h
    BH = 04h
    BL = object
        00h handle is DWORD on top of stack
        mailbox: wait for and get next message
        keyboard: wait for and get pointer to next input buffer
        pointer: wait for and get next message
        02h get next message from mailbox (task's handle on top of stack)
        03h get next message from current task's mailbox
        04h get the next input from keyboard (handle on top of stack)
        05h get the next input from task's default keyboard
        06h wait for input from any object in OBJECTQ (handle on stack)
        07h wait for input from any object in task's default OBJECTQ
Return: STACK: (if objectq) DWORD handle of object with input
           (otherwise)  DWORD number of bytes
                DWORD address of pointer message (see #0274)
Notes:    for a keyboard in keystroke mode, the input buffer is a single byte
      containing the character code as returned by the BIOS; the BIOS scan
      code is available via the STATUS call if the character is zero
    for a keyboard in field mode, the input buffer format is determined
      by the field table header for the window the keyboard is attached to
    keyboard input buffers and mailbox message buffers may be invalidated
      by the next READ, ERASE, CLOSE, or FREE message to the same object
SeeAlso: AH=12h/BH=05h"OBJECT",AH=12h/BH=84h

Format of DESQview pointer message:
Offset    Size    Description    (Table 0274)
 00h    WORD    row
 02h    WORD    column
 04h    BYTE    status (see #0275)
 05h    BYTE    field number or zero (APILEVEL >= 2.00 only)

Bitfields for DESQview pointer status:
Bit(s)    Description    (Table 0275)
 7-2    number of clicks-1 if multiple-click mode active
 7    set when press/release mode active and button pressed
 6    set when press/release mode active and button released
 1-0    button pressed (00=none,01=button1,10=button2)
--------Q-1512--BX0400-----------------------
INT 15 - TopView - SEND MESSAGE - "READ" - WAIT FOR TIMER TO EXPIRE
    AH = 12h
    BX = 0400h
    STACK: DWORD timer's handle
Return: after timer expires
    STACK: DWORD time in 1/100 sec after midnight when timer expired
SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=84h
--------Q-1512--BX0400-----------------------
INT 15 - TopView - SEND MESSAGE - "APPLY" - WRITE PANEL TO WINDOW
    AH = 12h
    BX = 0400h
    STACK: DWORD handle of panel object
           DWORD window's handle (or 0 for current task's window)
           DWORD length of panel name
           DWORD pointer to panel name
Return: STACK: DWORD handle of window which was used
           DWORD handle of keyboard or 0
Notes:    status of APPLY may be checked with STATUS message
    panel MUST have the following format
      first byte must be 1Bh (i.e. must start with a stream)
      first opcode in stream must be E5h
        single byte arg of opcode is interpreted thus:
          bits 7,6    11 means create new window
            10 means create new field table for existing window
            01 means use existing window and field table
          bit 5 if set, panel contains a field table
            (creates a new keyboard and puts it in field mode)
          bit 4 if set, panel contains input fields
          bit 3 if set, panel contains select fields but no input fields
    if the panel contains input or select fields, a keyboard handle is
      returned; either the window's current open keyboard or a
      newly-created keyboard object.  The caller should read that keyboard
      to obtain input from the panel.
SeeAlso: AH=12h/BH=84h
--------Q-1512--BH05------------------------
INT 15 - TopView - SEND MESSAGE - "WRITE" - WRITE TO OBJECT
    AH = 12h
    BH = 05h
    BL = object
        00h handle is DWORD on top of stack
        timer: start timer to end at a specified time
        keyboard: add input buffer to queue
        pointer: move pointer icon to specified position
        02h send message by value/status=0 to mbox (task's handle on stack)
        03h send message by value/status=0 to current task's mailbox
        04h add input buffer to KEYBOARD queue (handle on top of stack)
        05h add input buffer to task's default KEYBOARD queue
        06h add an object to OBJECTQ (handle on top of stack)
        07h add an object to task's default OBJECTQ
    STACK: (if mailbox)  DWORD length
                 DWORD address
           (if keyboard) DWORD status (scan code in keystroke mode)
                 DWORD length (should be 1 in keystroke mode)
                 DWORD address
           (if objectq)  DWORD handle of object to add
           (if timer)    DWORD 1/100ths seconds since midnight (actually
                   only accurate to 1/18 sec)
           (if pointer)  DWORD column relative to origin of window
                 DWORD row relative to origin of window
Notes:    under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h)
    the data and status written to a keyboard object must match the format
      returned by the keyboard object in the current mode
    the pointer position is scaled according to the current scaling factors
SeeAlso: AH=12h/BH=04h,AH=12h/BH=85h
--------Q-1512--BH05-------------------------
INT 15 - TopView - SEND MESSAGE - "WRITE" - WRITE STRING TO WINDOW
    AH = 12h
    BH = 05h
    BL = window to write to
        00h DWORD on top of stack is window handle
        01h write string to task's default window
        0Ch (DV 2.26+) default window of task owning handle on top of stack
        0Dh (DV 2.26+) default window of parent of current task
    STACK: DWORD object handle if handle passed on stack
           DWORD total length of string (high word == 0)
           DWORD address of string to display (see #0276)
Return: indicated actions performed
    a. non-control characters are displayed (opcodes DEh and DFh control
       whether the attributes are left or changed to the current attrib)
    b. CR/LF/BS/Tab cause the usual cursor movement
    c. ESC starts a data structure with additional commands if following
       byte is less than 20h; otherwise, it is written to the window
    STACK:    DWORD handle of new window if window stream opcode E6h
        else nothing
SeeAlso: AH=12h/BH=04h,AH=12h/BH=85h

Format of stream data structure:
Offset    Size    Description    (Table 0276)
 00h    BYTE    1Bh magic value identifying start of stream
 01h    BYTE    stream type (00h, 01h, 10h, 14h-1Fh legal)
        (see #0277,#0283,#0284,#0285)
 02h    WORD    length of remainder of stream in bytes
    var-length fields follow, each an OPCODE followed by
         zero or more args

(Table 0277)
Values for MODE 00h (set or display values) "WINDOW STREAM" opcodes:
Opcodes:args
 00h  display 20h blanks with the default attribute
 01h-1Fh display OPCODE blanks with the default attribute
 20h  display char with default attribute 20h times
    BYTE char to repeat
 21h-3Fh display char with default attribute OPCODE-20h times
    BYTE char to repeat
 40h  display 20h blanks with specified attribute
    BYTE attribute of blanks
 41h-5Fh display OPCODE-40h blanks with specified attribute
    BYTE attribute of blanks
 60h  display next 20h characters
    20h BYTEs characters to display
 61h-7Fh display next OPCODE-60h characters
    N BYTEs characters to display
 80h-87h display N blanks with default attribute
    BYTE low 8 bits of 11-bit count (high 3 in low 3 bits of OPCODE)
          [000h means 800h]
 88h-8Fh display N copies of the character
    BYTE low 8 bits of 11-bit count (high 3 in low 3 bits of OPCODE)
          [000h means 800h]
    BYTE character to repeat
 90h-97h display N blanks with specified attribute
    BYTE low 8 bits of 11-bit length (high 3 in low 3 bits of OPCODE)
          [000h means 800h]
    BYTE attribute
 98h-9Fh display string at logical cursor pos
    BYTE low 8 bits of 11-bit length (high 3 in low 3 bits of OPCODE)
          [000h means 800h]
    N BYTEs string to display
 A0h  set logical cursor row
    BYTE row number (0 is top)
 A1h  set logical cursor column
    BYTE column number (0 is leftmost)
 A2h  set top edge of scrolling region
    BYTE row
 A3h  set left edge of scrolling region
    BYTE column
 A4h  set row of physical window position
    BYTE line
 A5h  set column of physical window position
    BYTE column
 A6h  set height of physical window
    BYTE number of rows
 A7h  set width of physical window
    BYTE number of columns
 A8h  set viewport row
    BYTE row
 A9h  set viewport column
    BYTE column
 AAh  set virtual screen height [contents of window unpredictable after]
    BYTE rows
 ABh  set virtual screen width [contents of window unpredictable after]
    BYTE columns
 ACh-AEh unused
 AFh  set compatible/preferred video modes
    BYTE compatibility/preference mask
        bit 7    compatible with monochrome
        bit 6    compatible with color text, EGA/VGA graphics
        bit 5    compatible with medium-resolution CGA graphics
        bit 4    compatible with high-resolution CGA graphics
        bit 3    prefer monochrome
        bit 2    prefer color text, EGA/VGA graphics
        bit 1    prefer medium-resolution CGA graphics
        bit 0    prefer high-resolution CGA graphics
 B0h  move logical cursor down
    BYTE number of rows (signed, negative values move up)
        [if rows=0 and hardware cursor owner, update hardware cursor]
 B1h  move logical cursor right
    BYTE number of columns (signed, negative values move left)
        [if cols=0 and hardware cursor owner, update hardware cursor]
 B2h  shift top edge of scrolling region
    BYTE number of rows (signed)
 B3h  shift left edge of scrolling region
    BYTE number of columns (signed)
 B4h  shift physical window down
    BYTE number of lines (signed)
 B5h  shift physical window right
    BYTE number of columns (signed)
 B6h  expand physical window vertically
    BYTE number of lines (signed)
 B7h  expand physical window horizontally
    BYTE number of columns (signed)
 B8h  adjust viewport row
    BYTE number of rows (signed)
 B9h  adjust viewport column
    BYTE number of columns (signed)
 BAh  adjust virtual screen height [contents of window unpredict after]
    BYTE number of rows to increase (signed)
 BBh  adjust virtual screen width [contents of window unpredictbl after]
    BYTE number of columns to increase (signed)
 BCh-BFh reserved (currently unused)
 C0h  set logical cursor position
    BYTE row number (0 is top border)
    BYTE column number (0 is left border)
 C1h  set top left corner of scrolling region
    BYTE row
    BYTE column
 C2h  set physical window pos
    BYTE upper left row (no top border if 0)
    BYTE upper left column (no left border if 0)
 C3h  set current window size
    BYTE number of rows
    BYTE number of columns
 C4h  set upper left corner of viewport (portion of virtual screen displayed
      in window)
    BYTE row
    BYTE column
 C5h  set size of virtual screen [contents unpredictable afterwards]
    BYTE number of rows
    BYTE number of columns
 C6h  unused
 C7h  unused
 C8h  set logical cursor relative to current position
    BYTE number of rows to move down (signed)
    BYTE number of columns to move right (signed)
        [if rows=cols=0 and hardware cursor owner, update hardw cursor]
 C9h  shift top left corner of scrolling region
    BYTE number of rows (signed)
    BYTE number of columns (signed)
 CAh  set window pos relative to current position
    BYTE number of rows to shift down (signed)
    BYTE number of columns to shift right (signed)
 CBh  set window size relative to current size
    BYTE number of rows to expand (signed)
    BYTE number of cols to expand (signed)
 CCh  shift viewport relative to current position
    BYTE rows to shift (signed)
    BYTE cols to shift (signed)
 CDh  resize virtual screen
    BYTE number of rows to expand (signed)
    BYTE number of columns to expand (signed)
 CEh  scroll text when using E8h-EBh/F8h-FBh opcodes (default)
 CFh  scroll attributes when using  E8h-EBh/F8h-FBh opcodes
 D0h  allow window frame to extend beyond screen
 D1h  always display a complete frame, even if window extends beyond edge of
      screen
 D2h  allow DV to change logical colors on video mode switch (default)
 D3h  application changes logical attributes
 D4h  window is visible [must redraw to actually make visible]
 D5h  window is hidden [must redraw to actually remove]
 D6h  window has frame (default)
 D7h  window unframed [must redraw to actually remove frame]
 D8h  READ/READN will read characters from window (default)
 D9h  READ/READN will read attributes from window
 DAh  use logical attributes, which may be remapped (see #0278)
 DBh  use physical attributes for characters
 DCh  enable special actions for control characters (default)
 DDh  disable special control char handling, all chars displayable by BIOS TTY
      call
 DEh  write both character and attribute (default)
 DFh  write character only, leave attribute untouched
 E0h  repeat following commands through E1h opcode
    BYTE number of times to repeat (00h means 256 times)
 E1h  end of commands to repeat, start repeating them
 E2h  set current output color
    BYTE color
 E3h  clear virtual screen from scroll origin to end using current color
 E4h  redraw window
 E5h  select menu style
    BYTE style (normally 18h)
        bits 5,4 = 01 use two-letter menu entries for remainder of
          this stream
 E5h  (panel file only)
    BYTE modifier
        bits 7,6 = 11 panel stream creates new window
             = 10 panel defines new field table for existing window
             = 01 panel stream uses existing window & field table
        bit 5 = 1 stream contains a field table (create kyboard object)
        bit 4 = 1 stream defines input fields (create keyboard object)
        bit 3 = 1 stream defines select fields but not input fields
        bit 2 = 1 stream defines exclusive input window (DV 2.2)
        bit 1 reserved
        bit 0 reserved
 E6h  create new window and perform rest of manipulations in new window
    BYTE number of rows
    BYTE number of columns
    Return: DWORD object handle of new window returned on stack at end
    Note:    the window is created with a physical size of 0x0 at the
          same position as the window to which this stream was sent
 E7h  no operation
 E8h  scroll area up (top left corner defined by opcode C1h)
    BYTE height
    BYTE width
 E9h  scroll area down (top left corner defined by opcode C1h)
    BYTE height
    BYTE width
 EAh  scroll area left (top left corner defined by opcode C1h)
    BYTE height
    BYTE width
 EBh  scroll area right (top left corner defined by opcode C1h)
    BYTE height
    BYTE width
 ECh  set logical attributes for window contents
    BYTE video modes command applies to
        bit 7    monochrome
        bit 6    color text, EGA/VGA graphics
        bit 5    medium-resolution CGA graphics
        bit 4    high-resolution CGA graphics
    BYTE which attributes to set
        bit 7    if set, copy single following byte to indicated attribs
        bits 4-6  number of first attribute to change - 1
        bits 0-3  number of consecutive attributes to change
    N BYTEs new attributes
 EDh  set logical attributes for window frame
    BYTE video modes command applies to (see opcode ECh)
    BYTE which attributes to set
        bit 7    if set, copy single following byte to indicated attrs
        bits 4-6  number of first attribute to change - 1
        bits 0-3  number of consecutive attributes to change
    N BYTEs new attributes
          attributes
               1 = top left corner
               2 = top right corner
               3 = bottom left corner
               4 = bottom right corner
               5 = top edge
               6 = bottom edge
               7 = left edge
               8 = right edge
 EEh  set characters for window frame
    BYTE video modes command applies to (see opcode ECh)
    BYTE which characters to set
        bit 7    if set, copy single following byte to indicated chars
        bits 4-6  number of first character to change - 1
        bits 0-3  number of consecutive characters to change
    N BYTEs new chars (same relative position as attributes above)
 EFh  set window name
    BYTE length of name (should be in range 0 to logical screen width)
    N BYTEs name
 F0h  clear input field to blanks
    BYTE field number
 F1h  fill input field with character
    BYTE field number
    BYTE char
 F2h  set color of input field
    BYTE field number (1-N)
    BYTE attribute
 F3h  set initial contents of input field
    BYTE field number (1-N)
    N BYTEs enough chars to exactly fill field as defined by op FFh
 F4h  position cursor to start of specific input field
    BYTE field number (1-N)
 F5h  change field table entry
    BYTE field number
    7-8 BYTEs field table entry (see opcode FFh below)
 F6h  set field type
    BYTE field number
    BYTE type
        00h inactive
        40h output field
        80h input field
        C0h deselected field
        C2h selected field
 F7h  "broadcast write"    write data to fields with program output bit set in
      the field table entry, in field number order
    N BYTEs (total length of all program output fields)
 F8h  scroll field up a line
    BYTE field number
 F9h  scroll field down a line
    BYTE field number
 FAh  scroll field left
    BYTE field number
 FBh  scroll field right
    BYTE field number
 FCh  set field table header
        6 BYTEs    field table header (see #0279)
 FDh  reset modified bit for all fields
 FEh  reset selected and modified bits for all fields
 FFh  set up input fields
    6 BYTEs    table header (see #0279)
    7/8N BYTEs the field table entries, one for each field (see #0281)
    Note:    DESQview uses and updates the actual copy of the information
          which is contained in the stream.  Thus this info must remain
          intact until after the data entry is complete.

(Table 0278)
Values for TopView logical attributes:
 01h    normal text
 02h    highlighted normal text
 03h    help text
 04h    highlighted help text
 05h    error message
 06h    highlighted error message
 07h    emphasized text
 08h    marked text
 9-16    reverse video versions of 1-8

Format of TopView field table header:
Offset    Size    Description    (Table 0279)
 00h    BYTE    number of fields (must be <= existing number of fields)
 01h    BYTE    screen behavior bits (see #0280)
 02h    BYTE    current input field (updated by DESQview)
 03h     BYTE    current select field (updated by DESQview)
 04h    BYTE    attribute for select fields when they are pointed at
 05h    BYTE    attribute for select fields which have been selected

Bitfields for TopView screen behavior bits:
Bit(s)    Description    (Table 0280)
 7    reserved
 6    menu items may be selected via keyboard
 5    left mouse button in "status" mode (press anywhere in window
      immediately returns control to application)
 4    right mouse button in "status" mode
 3    select fields return contents or blanks rather than 'Y' or 'N'
 2    modified bits reset on return to application
 1-0    type of data returned
    00 no data returned on read of keyboard
    01 data returned as array of characters containing all fields packed
          together, with no field numbers
    10 data returned as numbered variable-length records for all fields
    11 data returned as numbered variable-length records for the fields
          which were modified

Format of TopView field table entry:
Offset    Size    Description    (Table 0281)
 00h    BYTE    start row      \
 01h    BYTE    start column  \ if menu selection and start is to
 02h    BYTE    end row       / right or below end, select from kbd only
 03h    BYTE    end column   /
 04h    BYTE    field type (see #0282)
 05h    BYTE    modifier
        if type is fill-in, then bit flags to determine behavior
          bit 7     automatically enter CR when field full
          bit 6     move to next field when current field is full
          bit 5     enter text from right end (for numbers)
          bit 4     force input to uppercase
          bit 3     clear old contents on first keystroke
          bit 2     input returned when cursor moves out of
              modified field ("validate", API level 2.02+)
          bit 1     reserved
          bit 0     reserved
        if select field, first key to press to activate
          00h if have to point-&-click or is an extended-ASCII
              keystroke (only if two-key menus enabled)
 06h    BYTE    (select field only) normal color of field
 07h    BYTE    second key for select field.  This byte is present iff
          two-letter menu entries selected with opcode E5h, and in that
          case is present regardless of field type

Bitfields for TopView field type:
Bit(s)    Description    (Table 0282)
 7,6    field class
    00 inactive (non-entry) field
    01 echos keystrokes input to make menu selection
    10 fill-in field
    11 select field
 5    field can be filled by broadcast write (F7h opcode)
 4    reserved
 3    reserved
 2    reserved
 1    set if field selected
 0    set if field modified

(Table 0283)
Values for MODE 01h "QUERY STREAM" opcodes:
(valid only for those opcodes listed here)
 A0h return logical cursor row in next byte
 A1h return logical cursor column in next byte
 A2h return top row of scrolling region in next byte
 A3h return left column of scrolling region in next byte
 A4h return row of physical window origin in next byte
 A5h return column of physical window origin in next byte
 A6h return height of physcial window in next byte
 A7h return width of physical window in next byte
 A8h return row of viewport origin in next byte
 A9h return column of viewport origin in next byte
 AAh return height of virtual screen in next byte
 ABh return width of virtual screen in next byte
 AFh return current video mode in next byte
 C0h return current logical cursor position in next two bytes
 C1h return top left corner of scrolling region in next two bytes
 C2h return current window position in next two bytes
 C3h return current window size in next two bytes
 C4h return current viewport origin in next two bytes
 C5h return current virtual screen size in next two bytes
 D0h \ overwritten with D0h if frames may fall off screen edge
 D1h /               D1h if frames always displayed entirely
 D2h \ overwritten with D2h if DESQview controls color palette
 D3h /               D3h if application changes color palette
 D4h \ overwritten with D4h if window visible
 D5h /               D5h if window hidden
 D6h \ overwritten with D6h if window has frame
 D7h /               D7h if window unframed
 D8h \ overwritten with D8h if reading characters from window
 D9h /               D9h if reading attributes from window
 DAh \ overwritten with DAh if using logical attributes
 DBh /               DBh if using physical attributes
 DCh \ overwritten with DCh if TTY control char interpretation on
 DDh /               DDh if TTY control char interpretation off
 DEh \ overwritten with DEh if writing both characters and attributes
 DFh /               DFh if leaving attributes untouched
 E2h return current color in next byte
 ECh get logical attributes for window contents
    BYTE execute call if currently in specified video mode
        bit 7    monochrome
        bit 6    color text, EGA/VGA graphics
        bit 5    medium-resolution CGA graphics
        bit 4    high-resolution CGA graphics
    BYTE which attributes to get
        bit 7    unused???
        bits 4-6 first attribute to get - 1
        bits 0-3 number of consecutive attributes
    N BYTEs buffer to hold attributes
 EDh get logical attributes for window frame
    BYTE execute call if currently in video mode (see opcode ECh)
    BYTE which attributes to get
        bit 7    unused???
        bits 4-6 first attribute to get - 1
        bits 0-3 number of consecutive attributes
    N BYTEs buffer to hold attributes
 EEh get characters for window frame
    BYTE execute call if currently in video mode (see opcode ECh)
    BYTE which attributes to get
        bit 7    unused???
        bits 4-6 first char to get - 1
        bits 0-3 number of consecutive chars
    N BYTEs buffer to hold chars
 EFh return first N characters of current window name
    BYTE    max length of returned name
    N BYTEs buffer to hold window name
 F3h return contents of specified field
    BYTE field number
    N BYTEs buffer to hold field contents (size equal to field size)
 F5h get field table entry
    BYTE field number
    7-8 BYTEs buffer to hold field table entry (see #0281)
    Notes:    DV < 2.26 always returns 7 bytes
        DV 2.26+ w/ APILEVEL < 2.26 returns 8 bytes iff field table
          is using 8-byte entries and eighth byte after    F5h is E7h
          (NOP); otherwise, 7 bytes are returned
        DV 2.26+ w/ APILEVEL > 2.26 returns 7 or 8 bytes depending
          on the field table entry size
 F6h get type of a field
    BYTE field number
    BYTE type
 FCh get field table header
    6 BYTEs buffer to store field table header (see #0279)

(Table 0284)
Values for MODE 10h "MANAGER STREAM" opcodes (valid only for those listed):
 00h allow window to be moved horizontally
 01h allow window to be moved vertically
 02h allow window to change width
 03h allow window to change height
 04h allow window to be scrolled horizontally
 05h allow window to be scrolled vertically
 06h allow "Close Window" menu selection for application
 07h allow "Hide Window" menu selection for application
 08h allow application to be suspended ("Rearrange/Freeze")
 0Eh allow "Scissors" menu
 10h allow DESQview main menu to be popped up
 11h allow "Switch Windows" menu
 12h allow "Open Window" menu
 13h allow "Quit" menu selection
 20h-33h opposite of 00h-13h, disallow specified action
 40h notify if horizontal position of window changes
 41h notify if vertical position of window changes
 42h notify if width of window changes
 43h notify if height of window changes
 44h notify if window scrolled horizontally
 45h notify if window scrolled vertically
 46h notify if window is closed--program has to clean up and exit itself
 47h notify if window is hidden
 48h notify if "?" on main menu selected
 49h notify if pointer message sent to window
 4Ah notify if window is placed in foreground
 4Bh notify if window is placed in background
 4Ch notify if video mode changes
 4Dh notify if "Scissors" menu "Cut" option selected
 4Eh notify if "Scissors" menu "Copy" option selected
 4Fh notify if "Scissors" menu "Paste" option selected
 50h notify if DESQview main menu about to pop up
 51h notify if DESQview main menu popped down
 60h-71h     opposite of 40h-51h: don't notify on specified event
 84h attach window to parent task's window (both move together)
 85h detach window from parent task's window (may move independently)
 86h disable background operation for application
 87h enable running in background
 88h set minimum size of physical window
    BYTE rows
    BYTE columns
 89h set maximum size of physical window
    BYTE rows
    BYTE cols
 8Ah set primary asynchronous notification routine (see #0286)
    DWORD address of routine, 0000h:0000h means none (see also below)
 8Bh set async notification parameter
    DWORD 32-bit value passed to 8Ah async routine in DS:SI
 ACh (DV2.2+) perform regular select field attribute processing
 ADh (DV2.2+) protect attributes in selected field from being lost
 AEh make window default notify window for owning app (API level 2.00+)
 AFh set selected field marker character
    BYTE character to display at left edge of selected fields
 BCh set standard field processing mode
 BDh set alternate field processing mode (enables cursor pad for menus)
 BEh disables changing reverse logical attributes with ECh opcode
 BFh enables changing reverse logical attributes with ECh opcode
 C0h make current window topmost in system
 C1h force current process into foreground
 C2h make current window topmost in process
 C3h position mouse pointer relative to origin of current field
    BYTE rows below upper left corner of field
    BYTE columns to right of upper left corner of field
 C4h position mouse pointer relative to origin of given field
    BYTE field number
    BYTE rows below upper left corner of field
    BYTE columns to right of upper left corner of field
 C5h orphan current window (also hides it)
    Note: must be last in stream; all subsequent commands ignored
 C6h show all windows for this process
 C7h hide all windows for this process
 C8h suspend process and hide all its windows
 C9h force current process into background
 CAh make current window bottom-most in process
 CBh cancel current window manager operation, remove DV menu, give control
      to topmost application
 CCh orphan window and give it to the system for use as paste data
 CEh reorder windows
    DWORD pointer to null-terminated list of words; each word is segment
          of object handle for a window
 FFh no operation

(Table 0285)
Values for MODES 14h to 1Fh "USER STREAMS":
    normally NOPs, but may be defined by SETESC message to invoke FAR
    routines, one for each mode number
      on entry to handler,
        DS:SI -> first byte of actual stream (not header)
        CX = number of bytes in stream
        ES:DI = window's handle

(Table 0286)
Values asynchronous notification routine defined by man.stream 8Ah called with:
    ES:DI = handle of window
    DS:SI is 32-bit value set by 8Bh manager stream opcode
       mailbox contains message indicating event
          Opcode
           40h  horizontal movement
           DWORD object handle of window
           BYTE     new row
           BYTE     new col
           41h  vertical movement
           DWORD object handle of window
           BYTE     new row
           BYTE     new col
           42h  horizontal size change
           DWORD object handle of window
           BYTE     new rows
           BYTE     new cols
           43h  vertical size change
           DWORD object handle of window
           BYTE     new rows
           BYTE     new cols
           44h  scrolled horizontally
           DWORD object handle of window
           BYTE     mouse row within window
           BYTE     mouse column within window
           BYTE     field mouse is on, 0 if none
           BYTE     amount moved: >0 right, <0 left, 0 done
           45h  scrolled vertically
           DWORD object hande of window
           BYTE     mouse row within window
           BYTE     mouse column within window
           BYTE     field mouse is on, 0 if none
           BYTE     amount moved: >0 down, <0 up, 0 done
           46h  window close request
           DWORD object handle of window
           BYTE     mouse pointer row
           BYTE     mouse pointer column
           BYTE     field mouse is on, 0 if none
           47h  application's windows hidden
           48h  Help for Program selected
           DWORD object handle of window
           BYTE     mouse pointer row
           BYTE     mouse pointer column
           BYTE     field mouse is on, 0 if none
           49h  pointer message sent to window
           DWORD pointer handle which received message
           4Ah  switched to window from another ("raise")
           4Bh  switched away from the window ("lower")
           4Ch  video mode changed
           BYTE new BIOS video mode
           4Dh  Scissors/cUt selected
           DWORD object handle of window
           BYTE     row of upper left corner
           BYTE     column of upper left corner
           BYTE     field number ul corner is in, 0=none
           DWORD handle of orphaned window created with
             copy of data from specified region
           BYTE     height of region
           BYTE     width of region
           4Eh  Scissors/Copy selected
           DWORD object handle of window
           BYTE     row of upper left corner
           BYTE     column of upper left corner
           BYTE     field number ul corner is in, 0=none
           DWORD handle of orphaned window created with
             copy of data from specified region
           BYTE     height of region
           BYTE     width of region
           4Fh  Scissors/Paste selected
           DWORD object handle of window
           BYTE     row of upper left corner
           BYTE     column of upper left corner
           BYTE     field number ul corner is in, 0=none
           DWORD handle of orphaned window with data
           BYTE     height of region
           BYTE     width of region
            Note: orphaned data window should be adopted or freed
                when done
           50h  main menu about to pop up
           51h  main menu popped down
Return: all registers unchanged
--------Q-1512--BH06-------------------------
INT 15 - DESQview 2.20+ - SEND MESSAGE - "SETPRI" - SET PRIORITY WITHIN OBJECTQ
    AH = 12h
    BH = 06h
    BL = object
        00h object handle in DWORD on top of stack
        mailbox, keyboard, pointer, or timer
        (DV 2.50+) window
        01h (DV 2.50+) current task's window
        04h given task's keyboard (task's handle on top of stack)
        05h current task's default keyboard
    STACK: DWORD new priority of object in task's OBJECTQ
            (new priority of task if window handle)
Notes:    initially all objects have the same default value.  Should only make
      relative adjustments to this default value.
    when changing priorities, all objects already on the objectq are
      reordered
    for window handles, only the non-blocked task(s) with the highest
      priority receive CPU time under DESQview 2.50-2.52; the default
      priority is 0Ah
SeeAlso: AH=12h/BH=07h,AH=12h/BH=87h
--------Q-1512--BH07-------------------------
INT 15 - DESQview 2.20+ - SEND MESSAGE - "GETPRI" - GET PRIORITY WITHIN OBJECTQ
    AH = 12h
    BH = 07h
    BL = object
        00h object handle in DWORD on top of stack
        mailbox, keyboard, pointer, or timer
        (DV 2.50+) window
        01h (DV 2.50+) current task's window
        04h given task's keyboard (task's handle on top of stack)
        05h current task's default keyboard
Return: STACK: DWORD object priority
Note:    initially all objects have the same default value.  Should only make
      relative adjustments to this default value.
SeeAlso: AH=12h/BH=06h
--------Q-1512--BH08-------------------------
INT 15 - TopView - SEND MESSAGE - "SIZEOF" - GET OBJECT SIZE
    AH = 12h
    BH = 08h
    BL = object
        00h handle in DWORD on top of stack
        window: total character positions in window
        timer: elapsed time since timer started
        pointer: number of messages queued to pointer object
        panel: number of panels in panel file
        keyboard: number of input buffers queued
        01h total chars in current task's default window
        02h number of messages in task's mailbox (task's handle on stack)
        03h number of messages in current task's mailbox
        04h number of input buffers queued in task's kbd (handle on stack)
        05h number of input buffers queued for current task's default kbd
        06h number of objects queued in OBJECTQ (task's handle on stack)
        07h number of objects queued in current task's OBJECTQ
        0Ch (DV 2.26+) total chars in window owning handle on top of stack
        0Dh (DV 2.26+) total chars in parent task's window
Return: DWORD on top of stack is result
Note:    for panel objects, a count of zero is returned if no panel file is open
      for the object
SeeAlso: AH=12h/BH=04h,AH=12h/BH=09h
--------Q-1512--BH09-------------------------
INT 15 - TopView - SEND MESSAGE - "LEN" - GET OBJECT LENGTH
    AH = 12h
    BH = 09h
    BL = object
        00h handle in DWORD on top of stack
        window: get chars/line
        timer: get 1/100 seconds remaining before timer expires
        mailbox: (DV/X) get number of bytes queued to mailbox
        01h get number of chars/line in current task's default window
        0Ch (DV 2.26+) get chars/line in window owning handle on top of stk
        0Dh (DV 2.26+) get chars/line in parent task's window
Return: DWORD on top of stack is length
SeeAlso: AH=12h/BH=08h
--------Q-1512--BH0A-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDTO" - WRITE CHARS AND ATTRIBS TO WINDOW
    AH = 12h
    BH = 0Ah
    BL = window to write to
        00h window handle is DWORD on top of stack
        01h current task's default window
        0Ch (DV 2.26+) default window of task owning handle on top of stack
        0Dh (DV 2.26+) default window of parent of current task
    STACK:    DWORD count of attributes
        DWORD address of attribute string
        DWORD count of characters
        DWORD address of character string
Notes:    if one string is longer than the other, the shorter one will be reused
      until the longer one is exhausted
    the cursor is left just after the last character written
SeeAlso: AH=12h/BH=0Bh"WINDOW"
--------Q-1512--BH0A-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDTO" - SEND MAILBOX MESSAGE/STAT BY VALUE
    AH = 12h
    BH = 0Ah
    BL = mailbox to write to
        00h handle is DWORD on top of stack
        02h default mailbox of task whose handle is on top of stack
        03h current task's default mailbox
    STACK:    DWORD    status (low byte)
        DWORD    length of message
        DWORD    address of message
Notes:    the message is copied into either system or common memory
    insufficient memory normally causes the process to be aborted; under
      DESQview 2.2+, failed writes may return CF set instead (see AX=DE15h)
SeeAlso: AH=12h/BH=0Bh"MAILBOX"
--------Q-1512--BH0A-------------------------
INT 15 - TopView - SEND MESSAGE - "ADDTO" - SET OBJECT BITS
    AH = 12h
    BH = 0Ah
    BL = object
        00h handle is DWORD on top of stack
        timer: start timer for specified interval
        pointer: set control flags (see #0288)
        keyboard: set control flags (see #0287)
        04h set control flags on KEYBOARD object (handle on top of stack)
        05h set control flags on task's default KEYBOARD object
    STACK: (if timer)   DWORD duration in 1/100 seconds
           (otherwise)  DWORD bits to set
SeeAlso: AH=12h/BH=0Bh"OBJECT"

Bitfields for DESQview keyboard object bits:
Bit(s)    Description    (Table 0287)
 15    reserved, can't be set
 14    unused
 13    reserved, can't be set
 12-6    unused
 5    (DV 2.2+) exclusive input
 4    filter all keys (used with handler established by SETESC)
    if 0, only keys that would normally be displayed are filtered
 3    program continues executing while input in progress
 2    insert mode active for field mode
 1    hardware cursor displayed when task is hardware cursor owner
    must be set if keyboard in field mode and field table includes input
      fields
 0    keyboard is in field mode rather than keystroke mode

Bitfields for DESQview pointer object bits:
Bit(s)    Description    (Table 0288)
 15    reserved, can't be set
 14-8    unused
 7    mouse pointer is hidden while in window
 6    get messages even if window not topmost
 5    get messages even if window not foreground
 4    multiple clicks separated by less than 1/3 second are counted and
      returned in a single message
 3    pointer position is relative to screen origin, not window origin
 2    send message on button release as well as button press
 1    (DV 2.23+) send message with row=FFFFh and col=FFFFh whenever the
      pointer leaves the window
 0    send message only on button activity, not movement
    DV-specific, and INT 15/AX=DE0Fh must have been called first
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - WRITE ATTRIBUTES TO WINDOW
    AH = 12h
    BH = 0Bh
    BL = window to write attributes to
        00h handle is DWORD on top of stack
        01h current task's default window
        0Ch (DV 2.26+) default window of task owning handle on top of stack
        0Dh (DV 2.26+) default window of parent of current task
    STACK:    DWORD number of attributes to write
        DWORD address of attributes
Note:    the attributes are written starting at the current cursor position; the
      cursor is left just after the last position written
SeeAlso: AH=12h/BH=0Ah"WINDOW"
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - SEND MAILBOX MESSAGE/STAT BY REF
    AH = 12h
    BH = 0Bh
    BL = mailbox to write to
        00h handle is DWORD on top of stack
        02h default mailbox of task whose handle is on top of stack
        03h current task's default mailbox
    STACK:    DWORD    status (low byte)
        DWORD    length of message
        DWORD    address of message
Notes:    only a pointer to the message is stored, but the write may still fail
      due to insufficient memory
    under DV 2.2+, failed mailbox writes may return CF set (see AX=DE15h)
SeeAlso: AH=12h/BH=0Ah"MAILBOX"
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - REMOVE OBJECT FROM OBJECTQ
    AH = 12h
    BH = 0Bh
    BL = OBJECTQ from which to remove all copies of a particular object
        06h OBJECTQ of task whose handle is on top of stack
        07h task's default OBJECTQ
    STACK:    DWORD    handle of object to remove
Note:    should be sent whenever an object is erased or closed
--------Q-1512--BH0B-------------------------
INT 15 - TopView - SEND MESSAGE - "SUBFROM" - RESET OBJECT BITS
    AH = 12h
    BH = 0Bh
    BL = object
        00h handle is DWORD on top of stack
        pointer: reset control flags
        keyboard: reset control flags
        04h clear control flags on KEYBOARD object (handle on top of stack)
        05h clear control flags on task's default KEYBOARD object
    STACK:    DWORD    which bits to clear (see #0287,#0288)
SeeAlso: AH=12h/BH=0Ah"OBJECT"
--------Q-1512--BH0C-------------------------
INT 15 - TopView - SEND MESSAGE - "OPEN" - OPEN OBJECT
    AH = 12h
    BH = 0Ch
    BL = object
        00h handle is DWORD on top of stack
        window:      fill with given character from scroll origin to end
        keyboard: attach to a window
        timer:      open
        pointer:  start taking input for window
        panel:      associate with a panel file
        01h fill task's default window with given char from scrl org to end
        02h open given task's mailbox for input (task's handle on stack)
        03h open current task's mailbox
        04h attach a KEYBOARD to a window (handle on top of stack)
        05h attach task's default KEYBOARD to a window
        06h open a task's OBJECTQ (task's handle on top of stack)
        07h open current task's OBJECTQ
        0Ch (DV 2.26+) fill def window of task owning handle on top of stck
        0Dh (DV 2.26+) fill default window of parent of current task
     STACK: (if window)   DWORD character to fill with
        (if keyboard) DWORD handle of window to attach to
        (if pointer)  DWORD handle of window to attach to
        (if panel)    DWORD length of filename or resident panel
                  DWORD address of filename or resident panel
        (otherwise)   nothing
Notes:    if first byte of panel file name is 1Bh, then the "name" IS a panel
    if first two bytes of panel file "name" are C0hC3h, then the "name" IS
      the panel file
    result code of open may be retrieved with STATUS message
    logical cursor is left at scroll origin after filling window
    the task opening a mailbox becomes its owner, and the only task allowed
      to read the mailbox
    messages are only sent to a pointer object when the mouse is positioned
      in the window to which the pointer has been attached
    there is no need to explicitly open a timer object, as ADDTO and WRITE
      messages automatically open the timer
SeeAlso: AH=12h/BH=0Dh,AH=12h/BH=14h"LOCK"
--------Q-1512--BH0D-------------------------
INT 15 - TopView - SEND MESSAGE - "CLOSE" - CLOSE OBJECT
    AH = 12h
    BH = 0Dh
    BL = object
        00h handle is DWORD on top of stack
        timer:      close
        keyboard: detach from window and discard queued input
        pointer:  stop taking input
        panel:      close
        mailbox:  close, unlock, and discard any pending messages
        02h close given task's mailbox (task's handle on top of stack)
        03h close task's default mailbox
        04h close KEYBOARD object (handle on top of stack)
        05h close task's default KEYBOARD
        06h close given task's OBJECTQ (task's handle on top of stack)
        07h close current task's OBJECTQ
Notes:    when an OBJECTQ is closed, each object in the OBJECTQ is sent an
      ERASE message (AH=12h/BH=0Eh)
    when a panel object is closed, the panel file and any panels currently
      in use are freed; window and keyboard objects created by APPLY are
      not affected, but field mode input ceases
    open but idle timer objects consume a small amount of CPU time
SeeAlso: AH=12h/BH=0Ch,AH=12h/BH=0Eh,AH=12h/BH=14h"LOCK"
--------Q-1512--BH0E-------------------------
INT 15 - TopView - SEND MESSAGE - "ERASE" - ERASE OBJECT
    AH = 12h
    BH = 0Eh
    BL = object
        00h handle is DWORD on top of stack
        window:      clear from scroll origin to end of window
        keyboard: discard input
        timer:      cancel current interval
        pointer:  discard all pending messages
        mailbox:  discard all pending messages
        01h clear task's default window from scroll origin to end
        02h discard all queued messages in mailbox (handle on top of stack)
        03h discard all queued messages in current task's default mailbox
        04h discard all input queued to KEYBOARD (handle on top of stack)
        05h discard all input queued to task's default KEYBOARD
        06h remove all objects from OBJECTQ (task's handle on top of stack)
        07h remove all objects from current task's OBJECTQ
        0Ch (DV 2.26+) clear window of task owning handle on top of stack
        0Dh (DV 2.26+) clear default window of parent of current task
Note:    when an OBJECTQ is erased, each object in the OBJECTQ is also erased
SeeAlso: AH=12h/BH=02h
--------Q-1512--BH0F-------------------------
INT 15 - TopView - SEND MESSAGE - "STATUS" - GET OBJECT STATUS
    AH = 12h
    BH = 0Fh
    BL = object
        00h handle is DWORD on top of stack
        timer:     is it running?
        pointer: return status of last message
        panel:     verify success of last OPEN or APPLY
        02h return status of last msg READ from mailbox (handle on stack)
        03h return status of last msg READ from task's default mailbox
        04h get stat of last msg from task's KEYBOARD (task handle on stk)
        05h get status of last msg from task's default KEYBOARD
        06h return whether OBJECTQ is open or not (handle on top of stack)
        07h return whether task's default OBJECTQ is open or not
Return: DWORD on top of stack is status
Notes:    if object is a panel object, the status indicates the error code:
      00h successful
      14h panel name not in panel directory
      15h not enough memory to apply panel
      16h invalid panel format
      17h panel file already open
      81h-92h  DOS error codes+80h            \  codes > 80h indicate
      95h not enough memory to open panel file     > that the panel was
      98h null panel file name            /  not opened
    if object is a timer, the status is:
      00000000h open but not running
      40000000h open and running
      80000000h closed
    if object is an OBJECTQ, the status is:
      00000000h open
      80000000h closed
    if object is a keyboard in keystroke mode, the status is the extended
      character code (scan code) of the last keystroke
    if object is a keyboard in field mode, the status indicates the reason
      for the last return from the field manager
      00h Enter key pressed
      01h Button 1 or keystroke selection
      02h Button 2
      03h validation
      04h auto Enter on field
      1Bh Escape pressed
      46h ^Break pressed
      other: extended code for key terminating input
    the status of mailbox messages sent by the window manager is always 80h
    the status of a pointer message is the same as the status field in the
      message
SeeAlso: AH=12h/BH=04h"READ"
--------Q-1512--BH10-------------------------
INT 15 - TopView - SEND MESSAGE - "EOF" - GET OBJECT EOF STATUS
    AH = 12h
    BH = 10h
    BL = object
        00h handle is DWORD on top of stack
        window: return TRUE if logical cursor past end of window
        mailbox: ???
        01h returns TRUE if logical cursor past end of task's def window
        02h return ??? for task's mailbox (task's handle on top of stack)
        03h return ??? for current task's mailbox
        0Ch (DV 2.26+) check log crsr of window owning handle on top of stk
        0Dh (DV 2.26+) check log cursor of window of parent task
Return: DWORD on top of stack is status
--------Q-1512--BH11-------------------------
INT 15 - TopView - SEND MESSAGE - "AT" - POSITION OBJECT CURSOR
    AH = 12h
    BH = 11h
    BL = window for which to move cursor
        00h window's handle is DWORD on top of stack
        01h task's default window
        0Ch (DV 2.26+) default window of task owning handle on top of stack
        0Dh (DV 2.26+) default window of parent of current task
    STACK: DWORD column
           DWORD row
--------Q-1512--BH11-------------------------
INT 15 - TopView - SEND MESSAGE - "SETNAME" - ASSIGN NAME TO MAILBOX
    AH = 12h
    BH = 11h
    BL = mailbox to name
        00h DWORD on top of stack is mailbox handle
        02h use given task's mailbox (task's handle on top of stack)
        03h use current task's default mailbox
    STACK: DWORD length of name
           DWORD address of name
SeeAlso: AH=12h/BH=12h"GETNAME",AX=DE0Eh
--------Q-1512--BX1100-----------------------
INT 15 - TopView - SEND MESSAGE - "SETSCALE" - SET POINTER SCALE FACTOR
    AH = 12h
    BX = 1100h
    STACK: DWORD object handle for pointer object
           DWORD number of colums to scale pointer position to
           DWORD number of rows to scale pointer position to
SeeAlso: AH=12h/BX=1200h
--------Q-1512--BH12-------------------------
INT 15 - TopView - SEND MESSAGE - "READN" - GET NEXT N OBJECT BYTES
    AH = 12h
    BH = 12h
    BL = window to read from
        00h handle is DWORD on top of stack
        01h read next N chars or attributes on task's default window
        0Ch (DV 2.26+) read window of task owning handle on top of stack
        0Dh (DV 2.26+) read default window of parent of current task
    STACK: DWORD count
Return: STACK: DWORD number of bytes actually read
           DWORD address of buffer containing data
Notes:    reading starts at the current logical cursor position; the cursor is
      updated to point at the character following the last one read
    any translucent blanks (FFh) which are visible on screen are changed
      to the character which is seen through them
    the string produced by the read is placed in an input buffer which may
      be reused by the next READ or READN of a window
    window stream opcodes D8h and D9h determine whether the read returns
      characters or attributes
SeeAlso: AH=12h/BH=04h"WINDOW",AH=12h/BH=05h"WINDOW"
--------Q-1512--BH12-------------------------
INT 15 - DESQview 2.50+ - SEND MESSAGE - "GETNAME" - GET NAME OF MAILBOX
    AH = 12h
    BH = 12h
    BL = mailbox for which to retrieve name
        00h DWORD on top of stack is mailbox handle
        02h use given task's mailbox (task's handle on top of stack)
        03h use current task's default mailbox
    STACK: DWORD length of buffer for name
           DWORD pointer to buffer
Return: STACK: DWORD length of returned name (or size of buffer, if less)
Program: DESQview 2.5x is distributed as part of DESQview/X 1.0x
Note:    the returned name is not NUL-terminated
SeeAlso: AH=12h/BH=11h"SETNAME",AX=DE0Eh
--------Q-1512--BX1200-----------------------
INT 15 - TopView - SEND MESSAGE - "GETSCALE" - GET POINTER SCALE FACTOR
    AH = 12h
    BX = 1200h
    STACK: DWORD object handle for pointer
Return: STACK: DWORD pointer pos scaled as if window were this many colums wide
           DWORD pointer pos scaled as if window were this many rows high
SeeAlso: AH=12h/BX=1100h
--------Q-1512--BH13-------------------------
INT 15 - TopView - SEND MESSAGE - "REDRAW" - REDRAW WINDOW
    AH = 12h
    BH = 13h
    BL = window object
        00h DWORD on top of stack is handle for window to redraw
        01h redraw task's default window
        0Ch (DV 2.26+) redraw window of task owning handle on top of stack
        0Dh (DV 2.26+) redraw default window of parent of current task
SeeAlso: AH=12h/BH=05h"WINDOW",AH=12h/BH=0Eh
--------Q-1512--BH13-------------------------
INT 15 - DESQview 2.50+ - SEND MESSAGE - "READINTO" - GET NEXT MAIL MESSAGE
    AH = 12h
    BH = 13h
    BL = mailbox from which to read
        00h DWORD on top of stack is mailbox handle
        02h use given task's mailbox (task's handle on top of stack)
        03h use current task's default mailbox
    STACK: DWORD size of buffer in bytes
           DWORD pointer to buffer
Return: STACK: DWORD number of bytes read
Program: DESQview 2.5x is distributed as part of DESQview/X 1.0x
Notes:    this call blocks if no input is available, but will return less than
      the requested number of bytes if some (but insufficient) data is
      available
    use this call instead of AH=12h/BH=04h if the mailbox has flag bits
      4 or 5 set, as common memory may be exhausted by that call when
      attempting to read the next message
SeeAlso: AH=12h/BH=04h"READ",AH=12h/BH=05h,AH=12h/BH=16h
--------Q-1512--BX1300-----------------------
INT 15 - TopView - SEND MESSAGE - "SETICON" - SPECIFY POINTER ICON
    AH = 12h
    BX = 1300h
    STACK: DWORD object handle for pointer
           DWORD character to use for pointer
Return: STACK popped
--------Q-1512--BH14-------------------------
INT 15 - TopView - SEND MESSAGE - "SETESC" - SET ESCAPE ROUTINE ADDRESS
    AH = 12h
    BH = 14h
    BL = message modifier
        00h handle is DWORD on top of stack
        01h define user stream
        04h intercept keystrokes from KEYBOARD to window (handle on stack)
        05h intercept keystrokes from task's default KEYBOARD to a window
    STACK: (if window)   DWORD user stream number (14h-1Fh)
                 DWORD address of FAR user stream handler
           (if keyboard) DWORD address of FAR filter function (see #0289)
Return: STACK popped

(Table 0289)
Values keyboard filter function is called with when keyboard is in field mode:
    AL = character
    AH = 00h or extended ASCII code if AL = 00h
    BL = field number
    CH = cursor column
    CL = cursor row
    DL = field type modifier (sixth item in field table entry)
    DH = seventh item in field table entry
    ES:SI = window's handle
    DS:DI -> field table entry for field containing the cursor
Return:    AH = action to take
        00h use keystroke
        01h ignore keystroke
        FFh beep and ignore keystroke
Note: the filter function is not allowed to make INT 15, DOS, or BIOS calls
--------Q-1512--BH14-------------------------
INT 15 - TopView - SEND MESSAGE - "LOCK" - REQUEST EXCLUSIVE ACCESS TO RESOURCE
    AH = 12h
    BH = 14h
    BL = object
        00h mailbox handle is DWORD on top of stack
        02h use given task's mailbox (task's handle on top of stack)
        03h use current task's default mailbox
Return: STACK popped if BL=00h
Note:    release exclusive access by sending CLOSE message to mailbox
    access may be requested multiple times, and requires multiple CLOSEs
SeeAlso: AH=12h/BH=0Dh
--------Q-1512--BH15-------------------------
INT 15 - DESQview v2.20+ - SEND MESSAGE - "SETFLAGS" - SET OBJECT FLAGS
    AH = 12h
    BH = 15h
    BL = object
        00h DWORD on top of stack
        mailbox, keyboard, or pointer only
        02h mailbox for task whose handle is on top of stack
        03h mailbox for current task
        04h keyboard for task whose handle is on top of stack
        05h keyboard for current task
    STACK: DWORD flags (see #0290,#0291)
Return: STACK popped
Notes:    only available if the API level has been set to at least 2.20
    equivalent to performing SUBFROM and ADDTO calls on the object
    if a mailbox has bits 4 or 5 set, you must use "READINTO" rather than
      "READ" (see AH=12h/BX=1300h"READINTO") to retrieve messages
SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=0Bh,AH=12h/BH=16h

Bitfields for DESQview mailbox object flags:
Bit(s)    Description    (Table 0290)
 0    all mail messages in common memory
 1    allow write even if closed
 2    don't erase messages when mailbox closed
 4    (DV/X) append messages with like status and sender (stream-oriented
      mail)
 5    (DV/X) store mail in expanded memory (pool grows as needed)
 6    (DV/X) make mailbox into non-owned mailbox

Bitfields for DESQview keyboard object flags:
Bit(s)    Description    (Table 0291)
 5    exclusive input when keyboard in use for input
--------Q-1512--BH16-------------------------
INT 15 - DESQview v2.20+ - SEND MESSAGE - "GETFLAGS" - GET OBJECT FLAGS
    AH = 12h
    BH = 16h
    BL = object
        00h DWORD on top of stack
        mailbox, keyboard, or pointer only
        02h mailbox for task whose handle is on top of stack
        03h mailbox for current task
        04h keyboard for task whose handle is on top of stack
        05h keyboard for current task
Return: STACK: DWORD current control flags (see #0290,#0291)
Notes:    only available if the API level has been set to at least 2.20
    if a mailbox has bits 4 or 5 set, you must use "READINTO" rather than
      "READ" (see AH=12h/BH=13h"READINTO") to retrieve messages
SeeAlso: AH=12h/BH=0Ah,AH=12h/BH=0Bh,AH=12h/BH=13h"READINTO",AH=12h/BH=15h
--------Q-1512--BH17-------------------------
INT 15 - DESQview v2.42-2.52 - BUG
    AH = 12h
    BH = 17h
    BL = object
        00h DWORD on top of stack
        mailbox, keyboard, or pointer only
        02h mailbox for task whose handle is on top of stack
        03h mailbox for current task
        04h keyboard for task whose handle is on top of stack
        05h keyboard for current task
Notes:    due to a fencepost error, message 17h is accepted for mailboxes,
      keyboards, and pointers, but causes a random branch
    DESQview v2.50-2.52 are distributed as part of DESQview/X v1.02
--------Q-1512--BH80-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 00h WITH ERROR RECOVERY
    AH = 12h
    BH = 80h
Note:    this function is identical to AH=12h/BH=00h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=00h

(Table 0292)
Values for DESQview error code:
 00h    no error
 01h    invalid values
 02h    alias invalid
 03h    handle valid but wrong type
 04h    invalid handle
--------Q-1512--BH81-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 01h WITH ERROR RECOVERY
    AH = 12h
    BH = 81h
Note:    this function is identical to AH=12h/BH=01h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=01h
--------Q-1512--BH82-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 02h WITH ERROR RECOVERY
    AH = 12h
    BH = 82h
Note:    this function is identical to AH=12h/BH=02h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=02h
--------Q-1512--BH83-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 03h WITH ERROR RECOVERY
    AH = 12h
    BH = 83h
Note:    this function is identical to AH=12h/BH=03h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=03h,AH=12h/BX=0300h
--------Q-1512--BH84-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 04h WITH ERROR RECOVERY
    AH = 12h
    BH = 84h
Note:    this function is identical to AH=12h/BH=04h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=04h,AH=12h/BX=0400h
--------Q-1512--BH85-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 05h WITH ERROR RECOVERY
    AH = 12h
    BH = 85h
Note:    this function is identical to AH=12h/BH=05h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=05h
--------Q-1512--BH86-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 06h WITH ERROR RECOVERY
    AH = 12h
    BH = 86h
Note:    this function is identical to AH=12h/BH=06h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=06h
--------Q-1512--BH87-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 07h WITH ERROR RECOVERY
    AH = 12h
    BH = 87h
Note:    this function is identical to AH=12h/BH=07h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=07h
--------Q-1512--BH88-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 08h WITH ERROR RECOVERY
    AH = 12h
    BH = 88h
Note:    this function is identical to AH=12h/BH=08h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=08h
--------Q-1512--BH89-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 09h WITH ERROR RECOVERY
    AH = 12h
    BH = 89h
Note:    this function is identical to AH=12h/BH=09h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=09h
--------Q-1512--BH8A-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Ah WITH ERROR RECOVERY
    AH = 12h
    BH = 8Ah
Note:    this function is identical to AH=12h/BH=0Ah, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=0Ah
--------Q-1512--BH8B-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Bh WITH ERROR RECOVERY
    AH = 12h
    BH = 8Bh
Note:    this function is identical to AH=12h/BH=0Bh, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=0Bh
--------Q-1512--BH8C-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Ch WITH ERROR RECOVERY
    AH = 12h
    BH = 8Ch
Note:    this function is identical to AH=12h/BH=0Ch, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=0Ch
--------Q-1512--BH8D-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Dh WITH ERROR RECOVERY
    AH = 12h
    BH = 8Dh
Note:    this function is identical to AH=12h/BH=0Dh, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=0Dh
--------Q-1512--BH8E-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Eh WITH ERROR RECOVERY
    AH = 12h
    BH = 8Eh
Note:    this function is identical to AH=12h/BH=0Eh, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=0Eh
--------Q-1512--BH8F-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 0Fh WITH ERROR RECOVERY
    AH = 12h
    BH = 8Fh
Note:    this function is identical to AH=12h/BH=0Fh, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=0Fh
--------Q-1512--BH90-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 10h WITH ERROR RECOVERY
    AH = 12h
    BH = 90h
Note:    this function is identical to AH=12h/BH=10h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=10h
--------Q-1512--BH91-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 11h WITH ERROR RECOVERY
    AH = 12h
    BH = 91h
Note:    this function is identical to AH=12h/BH=11h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=11h,AH=12h/BX=1100h
--------Q-1512--BH92-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 12h WITH ERROR RECOVERY
    AH = 12h
    BH = 92h
Note:    this function is identical to AH=12h/BH=12h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=12h,AH=12h/BX=1200h
--------Q-1512--BH93-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 13h WITH ERROR RECOVERY
    AH = 12h
    BH = 93h
Note:    this function is identical to AH=12h/BH=13h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=13h
--------Q-1512--BH94-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 14h WITH ERROR RECOVERY
    AH = 12h
    BH = 94h
Note:    this function is identical to AH=12h/BH=14h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=14h
--------Q-1512--BH95-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 15h WITH ERROR RECOVERY
    AH = 12h
    BH = 95h
Note:    this function is identical to AH=12h/BH=15h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=15h
--------Q-1512--BH96-------------------------
INT 15 - DESQview v2.50+ - SEND MESSAGE 16h WITH ERROR RECOVERY
    AH = 12h
    BH = 96h
Note:    this function is identical to AH=12h/BH=16h, except that DESQview will
      not pop up a "Programming Error" window, instead returning an error
      code in AL (see #0292)
SeeAlso: AH=12h/BH=16h
--------T-1513-------------------------------
INT 15 - VMiX - "sys_wake" - WAKE SLEEPING PROCESS
    AH = 13h
    STACK:    WORD    process ID
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=12h"VMiX"
--------T-1513-------------------------------
INT 15 - MultiDOS Plus - GET TASK CONTROL BLOCK
    AH = 13h
Return: BX:AX -> task control block (see #0293)
SeeAlso: AH=15h"MultiDOS"

Format of MultiDOS Plus v4.0 task control block:
Offset    Size    Description    (Table 0293)
 00h    DWORD    pointer to next TCB
 04h  8 BYTEs    ASCIZ task name
 0Ch  2 BYTEs    ???
 0Eh    WORD    task PSP segment
 10h    WORD    abort/suspend flags
 12h    WORD    current screen segment (see AH=0Bh,AH=0Ch)
 14h    WORD    priority level (0000h-FFFEh)
 16h    WORD    time slice counter
 18h  2 BYTEs    ???
 1Ah    WORD    suspend timer value
 1Ch    WORD    stack segment
 1Eh    WORD    stack pointer
 20h    WORD    display type
 22h    WORD    display memory
 24h  2 BYTEs    ???
 26h    WORD    termination count
 28h    WORD    equipment flag for BIO10 driver
 2Ah    BYTE    background CRT mode
 2Bh    WORD    screen width in columns
 2Dh    WORD    screen size in bytes
 2Fh    WORD    segment of physical screen memory
 31h 16 BYTEs    eight cursor positions
 41h    WORD    current cursor shape
 43h    BYTE    active display page
 44h    WORD    CRT controller I/O port base
 46h  2 BYTEs    ???
 48h    WORD    foreground task flag
 4Ah  6 BYTEs    ???
 50h    WORD    saved video segment (see AH=0Bh,AH=0Ch)
 52h    DWORD    old INT 22
 56h    DWORD    old INT 23
 5Ah    DWORD    old INT 24
 5Eh    WORD    top of memory for task
 60h  4 BYTEs    ???
 64h    WORD    DTA segment (see INT 21/AH=1Ah)
 66h    WORD    DTA offset
 68h  4 BYTEs    ???
 6Ch    BYTE    current ANSI.SYS attribute
 6Dh    BYTE    current ANSI.SYS column
 6Eh    BYTE    current ANSI.SYS row
 6Fh    BYTE    current ANSI.SYS display state
 70h    BYTE    maximum ANSI.SYS columns
 71h    BYTE    current ANSI.SYS page
 72h    WORD    saved ANSI.SYS cursor position
 74h    BYTE    ANSI.SYS parameter buffer index
 75h    BYTE    current ANSI.SYS screen mode
 76h    BYTE    ANSI.SYS wrap flag
 77h  6 BYTEs    ANSI.SYS parameter buffer
 7Dh    BYTE    ANSI.SYS keyboard DSR state
 7Eh  7 BYTEs    ANSI.SYS keyboard DSR buffer
 85h  3 BYTEs    ???
 88h 16 BYTEs    request header for DOS driver calls
 98h 14 BYTEs    ???
 A6h    WORD    segment of EMS map if EMS task
 A8h    WORD    flag: task makes EMS calls
 AAh    WORD    EMS handle for task
 ACh    WORD    keyboard shift state
 AEh 12 BYTEs    ???
 BAh    WORD    TCB of parent if child task
 BCh    WORD    termination code
 BEh    WORD    COM port number
 C0h  4 BYTEs    ???
 C4h    WORD    current IRQ number
 C6h  2 BYTEs    ???
 C8h    WORD    miscellaneous flag word
 CAh  2 BYTEs    ???
 CCh    DWORD    old INT 10
 D0h    WORD    EMS alternate map set number
 D2h 414 BYTEs    DOS current disk and directory context (optional)
--------T-1514-------------------------------
INT 15 - VMiX - "sys_clrwindow" - CLEAR WINDOW
    AH = 14h
    STACK:    WORD    top left corner of window (high byte = row, low = col)
        WORD    bottom right corner of window (high = row, low = col)
Return: AX = status (SYS_OK)
Note:    clears window to color set with "sys_setcolors" (AH=18h)
SeeAlso: AH=15h"VMiX",AH=16h"VMiX",AH=18h"VMiX",AH=1Fh"VMiX"
--------T-1514-------------------------------
INT 15 - MultiDOS Plus - CHECK IF MultiDOS FOREGROUND OR BACKGROUND
    AH = 14h
Return: AX = current state
        0000h MultiDOS Plus command prompt is background task
        0001h command prompt is foreground task
SeeAlso: AH=0Bh"MultiDOS"
--------T-1515-------------------------------
INT 15 - VMiX - "sys_setbwindow" - SET BANNER WINDOW MESSAGE
    AH = 15h
    STACK:    DWORD    pointer to ASCIZ banner message for top of screen
Return: AX = status (SYS_OK)
SeeAlso: AH=14h"VMiX",AH=16h"VMiX"
--------T-1515-------------------------------
INT 15 - MultiDOS Plus - GET SYSTEM BLOCK
    AH = 15h
Return: BX:AX -> system block (see #0294)
SeeAlso: AH=13h"MultiDOS"

Format of MultiDOS Plus 4.0 system block:
Offset    Size    Description    (Table 0294)
 00h    WORD    segment of system control block
 02h    WORD    redirection flag set by /NOREDIRECT
 04h    WORD    no-INT 10 flag set by /NO10
 06h    DWORD    old INT 10
 0Ah    DWORD    new INT 10
 0Eh    DWORD    pointer to WORD with current TCB offset (see #0293)
 12h    DWORD    pointer to WORD with idle task TCB offset
 16h    DWORD    pointer to WORD with foreground TCB offset (see #0293)
 1Ah    DWORD    pointer to WORD with MultiDOS TCB offset (see #0293)
 1Eh    WORD    Task Control Block size
 20h    WORD    number of TCBs
 22h    WORD    flag: EMS present
 24h    WORD    EMS page frame base segment
 26h    WORD    16K pages in EMS page frame
 28h    WORD    base segment for conventional memory tasks
 2Ah    WORD    conventional memory size in paragraphs
 2Ch    DWORD    pointer to list of queue pointers
--------T-1516-------------------------------
INT 15 - VMiX - "sys_setwindow" - SET ROOT WINDOW SIZE AND HOME CURSOR
    AH = 16h
    STACK:    DWORD    pointer to I/O Request Packet
        WORD    top left corner of window (high byte = row, low = col)
        WORD    bottom right corner of window (high = row, low = col)
Return: AX = status (SYS_OK or SYS_ERROR)
SeeAlso: AH=14h"VMiX",AH=17h"VMiX"
--------T-1516-------------------------------
INT 15 - MultiDOS Plus - INITIALIZATION
    AH = 16h
Note:    used internally during initialization; any other calls will cause
      unpredictable results
--------T-1517-------------------------------
INT 15 - VMiX - "sys_getcolors" - GET CONSOLE WINDOW COLORS
    AH = 17h
Return: AH = foreground color
    AL = background color
SeeAlso: AH=16h"VMiX",AH=18h"VMiX"
--------T-1517-------------------------------
INT 15 - MultiDOS Plus - MAP IRQ
    AH = 17h
    AL = IRQ to map (01h-0Fh)
    BX = offset of task control block (see #0293) to associate with IRQ
Return: AX = status
        0000h successful
        other invalid IRQ
Note:    the EMS map of the specified TCB is associated with the given interrupt
SeeAlso: AH=18h"MultiDOS",AH=19h"MultiDOS"
--------T-1518-------------------------------
INT 15 - VMiX - "sys_setcolors" - SET CONSOLE COLORS
    AH = 18h
    STACK:    WORD    new background/foreground colors
            bits 3-0: foreground
            bits 7-4: background
            bits 15-8: unused
Return: AX = color
SeeAlso: AH=14h"VMiX",AH=17h"VMiX",AH=19h"VMiX"
--------T-1518-------------------------------
INT 15 - MultiDOS Plus - UNMAP IRQ
    AH = 18h
    AL = IRQ to unmap (01h-0Fh)
Return: AX = status
        0000h successful
        0001h invalid IRQ
Note:    results are unpredictable if the IRQ has not been mapped
SeeAlso: AH=17h"MultiDOS",AH=19h"MultiDOS"
--------T-1519-------------------------------
INT 15 - VMiX v2+ - "sys_setconwn" - SET WINDOW COLORS
    AH = 19h
    STACK:    WORD    new background/foreground colors
            bits 3-0: foreground
            bits 7-4: background
            bits 15-8: unused
Return: AX = color
SeeAlso: AH=18h"VMiX"
--------T-1519-------------------------------
INT 15 - MultiDOS Plus - UNMAP ALL IRQs
    AH = 19h
Return: AX destroyed
Note:    for MultiDOS internal use only
SeeAlso: AH=17h"MultiDOS",AH=18h"MultiDOS"
--------T-151A-------------------------------
INT 15 - VMiX v2+ - "sys_sint" - INVOKE SOFTWARE INTERRUPT
    AH = 1Ah
    STACK:    WORD    interrupt number
        DWORD    pointer to register structure
Return: AX = returned flags
--------T-151A-------------------------------
INT 15 - MultiDOS Plus - MAP SEMAPHORE NAME TO NUMBER
    AH = 1Ah
    DS:SI -> 8-byte name
Return: AL = status
        00h successful
        AH = semaphore number (20h-3Fh)
        04h out of string space
Notes:    all eight bytes of the name are significant
    if the name does not already exist, it is added to the name table and
      associated with a free semaphore number
    names cannot be destroyed
SeeAlso: AH=1Bh"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS"
--------T-151B-------------------------------
INT 15 - VMiX v2+ - "sys_blkmov" - MOVE MEMORY BLOCK
    AH = 1Bh
    STACK:    DWORD    source address
        DWORD    destination address
        WORD    number of words to move
Return: nothing
--------T-151B-------------------------------
INT 15 - MultiDOS Plus - REQUEST RESOURCE SEMAPHORE BY NAME
    AH = 1Bh
    DS:SI -> 8-byte name
Return: AH = status
        00h successful
        02h invalid semaphore number
        03h caller already owns semaphore
        04h out of string space
Notes:    (see AH=01h"MultiDOS")
    equivalent to AH=1Ah followed by AH=01h
SeeAlso: AH=01h"MultiDOS",AH=1Ah"MultiDOS",AH=1Ch"MultiDOS",AH=1Dh"MultiDOS"
--------T-151C-------------------------------
INT 15 - VMiX v2+ - "sys_bitblt" - PUT GRAPHICAL OBJECT AT CURSOR POSITION
    AH = 1Ch
    STACK:    WORD    AND/OR pixel with background (00h = OR, 01h = AND)
        DWORD    pointer to object bitmap
        WORD    object width in pixels
        WORD    object height in pixels
Return: nothing
SeeAlso: AH=1Dh"VMiX"
--------T-151C-------------------------------
INT 15 - MultiDOS Plus - RELEASE RESOURCE SEMAPHORE BY NAME
    AH = 1Ch
    DS:SI -> 8-byte name
Return: AH = status
        00h successful
        01h not semaphore owner
        02h invalid semaphore number
        04h out of string space
Notes:    (see AH=02h"MultiDOS")
    equivalent to AH=1Ah followed by AH=02h
SeeAlso: AH=02h"MultiDOS",AH=1Ah"MultiDOS",AH=1Bh"MultiDOS",AH=1Dh"MultiDOS"
--------T-151D-------------------------------
INT 15 - VMiX v2+ - "sys_getfont" - GET CURRENT CONSOLE GRAPHICS FONT
    AH = 1Dh
Return: AX = current font number (00h-03h)
SeeAlso: AH=1Ch"VMiX",AH=1Eh"VMiX"
--------T-151D-------------------------------
INT 15 - MultiDOS Plus - TEST RESOURCE SEMAPHORE BY NAME
    AH = 1Dh
    DS:SI -> 8-byte name
Return: AH = status
        00h semaphore not in use
        01h semaphore owned by another task
        02h invalid semaphore number
        03h caller owns semaphore
        04h out of string space
Notes:    (see AH=10h"MultiDOS")
    equivalent to AH=1Ah followed by AH=10h
SeeAlso: AH=10h"MultiDOS",AH=1Ah"MultiDOS",AH=1Bh"MultiDOS",AH=1Ch"MultiDOS"
--------T-151E-------------------------------
INT 15 - VMiX v2+ - "sys_setfont" - SET CONSOLE GRAPHICS FONT
    AH = 1Eh
    STACK: WORD new font number (00h-03h)
Return: AX = current font number (00h-03h)
SeeAlso: AH=1Dh"VMiX"
--------T-151E00-----------------------------
INT 15 - MultiDOS Plus - CLEAR EVENT COUNTER
    AX = 1E00h
    DX = event/trigger number (00h-3Fh)
Return: AH = status
        00h successful
SeeAlso: AX=1E01h,AX=1E02h
--------T-151E01-----------------------------
INT 15 - MultiDOS Plus - TRIGGER EVENT
    AX = 1E01h
    DX = event/trigger number (00h-3Fh)
Return: AH = status
        00h successful
        01h invalid event/trigger number
Notes:    schedules any task waiting for event; if no task is waiting, the event
      counter is incremented (and will roll over if it was 65535)
    may be invoked by interrupt handler
SeeAlso: AX=1E00h,AX=1E02h
--------T-151E02-----------------------------
INT 15 - MultiDOS Plus - WAIT FOR EVENT
    AX = 1E02h
    DX = event/trigger number (00h-3Fh)
Return: AH = status
        00h successful
        01h invalid event/trigger number
Note:    if the event counter is zero, the task is suspended until the event is
      triggered with AX=1E01h; else, the counter is decremented and the
      call returns immediately
SeeAlso: AX=1E00h,AX=1E01h
--------T-151E08-----------------------------
INT 15 - MultiDOS Plus 4.01 - SET CONTEXT-SWITCH FUNCTIONS
    AX = 1E08h
    DX:BX -> context save handler (see #0295)
    DX:CX -> context restore handler (see #0295)
Note:    handlers may be removed by setting addresses to 0000h:0000h

(Table 0295)
Values MultiDOS Plus context-switch handlers are called with:
    ES:BX -> task's TCB
Return: all registers preserved
--------T-151F-------------------------------
INT 15 - VMiX v2.???+ - "sys_scrollwin" - SCROLL WINDOW
    AH = 1Fh
    STACK:    WORD    top left corner of window (high byte = row, low = col)
        WORD    bottom right corner of window
Return: AX = status (SYS_OK)
SeeAlso: AH=14h"VMiX",AH=18h"VMiX"
--------T-151F-------------------------------
INT 15 - MultiDOS Plus v4.01 - GET MEMORY PARAMETERS
    AH = 1Fh
Return: BX = first segment of conventional memory
    DX = first segment of EMS swap frame into which MultiDOS will load
        programs
--------T-1520-------------------------------
INT 15 - MultiDOS Plus v4.01 - CHECK IF MULTITASKING ENABLED
    AH = 20h
Return: AX = current state
        0000h multitasking enabled
        other TCB of task that disabled multitasking
SeeAlso: AH=0Dh"MultiDOS",AH=13h"MultiDOS"
--------c-152000-----------------------------
INT 15 U - DOS 3+ PRINT.COM - DISABLE CRITICAL REGION FLAG
    AX = 2000h
Desc:    stop setting user flag on entry to PRINT critical region
Note:    also supported by PC Network v1.00 RECEIVER.COM
SeeAlso: AX=2001h
--------c-152001-----------------------------
INT 15 U - DOS 3+ PRINT.COM - SET CRITICAL REGION FLAG
    AX = 2001h
    ES:BX -> byte which is to be incremented while in a DOS call
Desc:    specify a user flag which PRINT should set to let an interested
      application know it is in a critical region
Note:    also supported by PC Network v1.00 RECEIVER.COM
SeeAlso: AX=2000h
--------O-152010-----------------------------
INT 15 - OS HOOK - SETUP SYSREQ ROUTINE (AT,XT286,PS50+)
    AX = 2010h
    ???
Return: ???
SeeAlso: AX=2011h
--------O-152011-----------------------------
INT 15 - OS HOOK - COMPLETION OF SYSREQ FUNCTION (AT,XT286,PS50+)
    AX = 2011h
    ???
Return: ???
SeeAlso: AX=2010h
--------B-1521-------------------------------
INT 15 - SYSTEM - POWER-ON SELF-TEST ERROR LOG (PS50+)
    AH = 21h
    AL = subfunction
        00h read POST log
        01h write POST log
        BH = device ID
        BL = error code
Return: CF set on error
    AH = status (00h OK, 01h list full, 80h invalid cmd, 86h unsupported)
    if function 00h:
       BX = number of error codes stored
       ES:DI -> error log
Note:    the log is a series of words, the first byte of which identifies the
      error code and the second the device.
--------B-1522-------------------------------
INT 15 - SYSTEM - later PS/2s - LOCATE ROM BASIC
    AH = 22h
Return: CF set on error
        AH = status (86h if function not supported)
    CF clear on success
        AH = 00h
        ES:BX -> ROM BASIC
Note:    if this function is not supported, ROM BASIC is at F600h:0000h
SeeAlso: INT 86"BASIC",INT F0"BASIC"
--------B-152300-----------------------------
INT 15 U - SYSTEM - PS/1s - GET ??? CMOS DATA
    AX = 2300h
Return: CF clear if successful
        CL = value of CMOS location 2Dh
        CH = value of CMOS location 2Eh
    CF set on error
        AH = error code (80h,86h)
SeeAlso: AX=2301h,AX=2304h,AX=2305h
--------B-152300-----------------------------
INT 15 U - SYSTEM - PS/1s - SET ??? CMOS DATA
    AX = 2301h
    CL = new value for CMOS location 2Dh
    CH = new value for CMOS location 2Eh
Return: CF clear if successful
    CF set on error
        AH = error code (80h,86h)
Note:    sets the contents of CMOS locations 2Dh and 2Eh
SeeAlso: AX=2300h,AX=2304h,AX=2305h
--------B-152304-----------------------------
INT 15 U - SYSTEM - PS/1s - SYSTEM SETUP
    AX = 2304h
    DX = segment of 32K buffer
Return: CF clear if successful
        AX = 0003h (left over from setting video mode 3)
        BX,CX,DX,BP,DS,ES destroyed
    CF set on error
        AH = error code (80h,86h)
SeeAlso: AX=2301h,AX=2305h
---------------------------------------------
INT 15 U - SYSTEM - PS/1s - GET PROCESSOR SPEED
    AX = 2305h
Return: CF clear if successful
        AL = processor speed in MHz
    CF set on error
        AL = FFh (speed > 80 MHz)
        AL = error code (80h,86h = unsupported function)
SeeAlso: AX=2301h,AX=2304h,AH=BCh
--------b-152400-----------------------------
INT 15 - SYSTEM - later PS/2s - DISABLE A20 GATE
    AX = 2400h
Return: CF clear if successful
        AH = 00h
    CF set on error
        AH = status
        01h keyboard controller is in secure mode
        86h function not supported
Note:    also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2401h,AX=2402h,AX=2403h
--------b-152401-----------------------------
INT 15 - SYSTEM - later PS/2s - ENABLE A20 GATE
    AX = 2401h
Return: CF clear if successful
        AH = 00h
    CF set on error
        AH = status
        01h keyboard controller is in secure mode
        86h function not supported
Note:    also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2400h,AX=2402h
--------b-152402-----------------------------
INT 15 - SYSTEM - later PS/2s - GET A20 GATE STATUS
    AX = 2402h
Return: CF clear if successful
        AH = 00h
        AL = current state (00h disabled, 01h enabled)
    CF set on error
        AH = status
        01h keyboard controller is in secure mode
        86h function not supported
Note:    also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2400h,AX=2401h
--------b-152403-----------------------------
INT 15 - SYSTEM - later PS/2s - QUERY A20 GATE SUPPORT
    AX = 2403h
Return: CF clear if successful
        AH = 00h
        BX = status of A20 gate support (see #0296)
    CF set on error
        AH = status
        01h keyboard controller is in secure mode
        86h function not supported
Note:    also supported by Qualitas 386MAX v6.01+
SeeAlso: AX=2402h

Bitfields for A20 gate support status:
Bit(s)    Description    (Table 0296)
 0    supported with bit 1 of I/O port 92h
 1    supported on keyboard controller
 15    additional data is available (location not yet defined)
--------B-1540-------------------------------
INT 15 - SYSTEM - READ/MODIFY PROFILES (CONVERTIBLE)
    AH = 40h
    AL = subfunction
        00h get system profile in CX and BX
        01h set system profile from CX and BX
        02h get internal modem profile in BX
        03h set internal modem profile from BX
Return: CF clear if successful
        AH = 00h
    CF set on error
        AH = status (80h = profile execution failed)
--------V-154000-----------------------------
INT 15 - Compaq SLT/286 or Portable 386 - READ LCD/PLASMA TIMEOUT
    AX = 4000h
Return: AX = 4000h
    CL = timeout in minutes, 00h if disabled
SeeAlso: AX=4001h,AX=4600h
--------V-154001-----------------------------
INT 15 - Compaq SLT/286 or Portable 386 - SET LCD/PLASMA TIMEOUT
    AX = 4001h
    CL = timeout in minutes, 00h to disable
Return: AL = status
        00h timeout modified
        01h timeout cannot be modified
        40h timeout cannot be modified
    CL = timeout in minutes, 00h if disabled
SeeAlso: AX=4000h,AX=4601h
--------B-1541-------------------------------
INT 15 - SYSTEM - WAIT ON EXTERNAL EVENT (CONVERTIBLE and some others)
    AH = 41h
    AL = condition type (see #0297)
    BH = condition compare or mask value
    BL = timeout value times 55 milliseconds
        00h means no timeout
    DX = I/O port address if AL bit 4 set
    ES:DI -> user byte if AL bit 4 clear
Note:    call AH=C0h and examine bit 3 of feature byte 1 to determine whether
      this function is supported
SeeAlso: AH=83h,AH=86h,AH=C0h

Bitfields for external event wait condition type:
Bit(s)    Description    (Table 0297)
 0-2    condition to wait for
    0 any external event
    1 compare and return if equal
    2 compare and return if not equal
    3 test and return if not zero
    4 test and return if zero
 3    reserved
 4    1=port address, 0=user byte
 5-7    reserved
--------B-1542-------------------------------
INT 15 - SYSTEM - REQUEST POWER OFF (CONVERTIBLE,HP 95LX)
    AH = 42h
    AL = suspend type
        00h to use system profile
        01h to force suspend regardless of system profile
Note:    the HP 95LX apparently suspends regardless of the value in AL; on
      power-up, execution will resume following the instruction calling
      this function
SeeAlso: AH=44h
--------b-154280-----------------------------
INT 15 - Compaq SLT/286 - ENTER STANDBY
    AX = 4280h
Return: AH = 42h
    CF clear if successful
    CF set if unable to enter standby
SeeAlso: AX=4600h,AX=5307h/BX=0001h/CX=0001h
--------B-1543-------------------------------
INT 15 - SYSTEM - READ SYSTEM STATUS (CONVERTIBLE)
    AH = 43h
Return: AL = status bits (see #0298)

Bitfields for Convertible system status:
Bit(s)    Description    (Table 0298)
 7    power low
 6    external power in use
 5    standby power lost
 4    power activated by alarm
 3    internal modem powered on
 2    RS232/parallel adapter powered on
 1    reserved
 0    LCD detached
--------B-1544-------------------------------
INT 15 - SYSTEM - (DE)ACTIVATE INTERNAL MODEM POWER (CONVERTIBLE)
    AH = 44h
    AL = new modem power state (00h power off, 01h power on)
SeeAlso: AH=42h
--------b-1544C0-----------------------------
INT 15 - Olivetti Quaderno - INITIALIZE DIGITAL SIGNAL PROCESSING???
    AX = 44C0h
    ES:DI -> new DSP procedure (exchanged with CMOS[28h])
    ES:SI -> ??? buffer
Return: ES:DI -> old DSP procedure
    ES:SI buffer filled with ten bytes from CMOS (addresses 14h-1Ch)
      followed by 00h (addresses 15h-1Ch copied only if less than 21h)
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C1-----------------------------
INT 15 - Olivetti Quaderno - ???
    AX = 44C1h
    ???
Return: ???
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C2-----------------------------
INT 15 - Olivetti Quaderno - ???
    AX = 44C2h
    DL = byte to be written to I/O port 350h
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C3h,AX=44C9h
--------b-1544C3-----------------------------
INT 15 - Olivetti Quaderno - GET ???
    AX = 44C3h
Return: DH = bitfields (see #0299)
    DL = value read from I/O port 350h
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C2h,AX=44C9h

Bitfields for Olivetti Quaderno ???:
Bit(s)    Description    (Table 0299)
 5-7    5-7 read from I/O port 351h
 2-4    zero
 1-0    "tres complique"
--------b-1544C4-----------------------------
INT 15 - Olivetti Quaderno - ???
    AX = 44C4h and 44C5h
    ???
Return: ???
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C6-----------------------------
INT 15 - Olivetti Quaderno - READ LCD
    AX = 44C6h
Return: DX = FFFFh clock is displayed on LCD display
    DX = other: hex number displayed in first four positions of display
    BH = left alphanumeric character on display (see #0300)
    BL = right alphanumeric character on display (see #0300)
    CL = colon flags (see #0301)
Notes:    the LCD display has the format HH:HH:AA, where H is a hex digit and A
      is an alphanumeric character
    this function is also supported by XBIOS.COM
SeeAlso: AX=44C7h,AX=44C9h

(Table 0300)
Values for Olivetti Quaderno LCD alphanumeric characters:
 00h-0Fh hex digit
 2Bh    "+"
 2Dh    "-"
 30h-39h "0" to "9"
 41h-5Ah "A" to "Z"
 61h-6Ah "a" to "z"
 else    blank

Bitfields for Olivetti Quaderno LCD colon flags:
Bit(s)    Description    (Table 0301)
 0    right colon on
 1    left colon on
 2-7    unused
--------b-1544C7-----------------------------
INT 15 - Olivetti Quaderno - WRITE LCD
    AX = 44C7h
    DX = hex display
        FFFFh display clock and "HI", "Md", or "Lo"
        BH,BL,CL unused
        other: display specified hex number in first four positions
        BH = left alphanumeric character on display (see #0300)
        BL = right alphanumeric character on display (see #0300)
        CL = colon flags (see #0301)
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C6h
--------b-1544C8-----------------------------
INT 15 - Olivetti Quaderno - ???
    AX = 44C8h
    CL = ??? (00h,02h,21h)
    CH = ???
    ???
Return: ???
Note:    this function is also supported by XBIOS.COM
SeeAlso: AX=44C9h
--------b-1544C9-----------------------------
INT 15 - Olivetti Quaderno - GET XBIOS VERSION
    AX = 44C9h
Return: AL = major version
    AH = minor version
Note:    this function is also supported by XBIOS.COM
--------b-154600-----------------------------
INT 15 - Compaq SLT/286 - READ POWER CONSERVATION/MODEM CONFIGURATION
    AX = 4600h
Return: AH = modem configuration information (see #0302)
    AL = power conservation status information (see #0303)
    BH = default system inactivity timeout (1-21 minutes)
    BL = current system inactivity timeout (1-21 minutes)
    CH = default video display inactivity timeout (1-63 minutes)
    CL = current video display inactivity timeout (1-63 minutes)
    DH = default fixed disk drive inactivity timeout (1-21 minutes)
    DL = current fixed disk drive inactivity timeout (1-21 minutes)
SeeAlso: AX=4280h,AX=4601h,INT 77

Bitfields for Compaq SLT/286 modem configuration information:
Bit(s)    Description    (Table 0302)
 0    powerup state (0 off, 1 on)
 1    modem installed
 2    IRQ line assignment (0 IRQ 4, 1 IRQ 3)
 3    COM port assignment (0 = COM 2, 1 = COM 1)
 4    modem state (0 not assigned, 1 assigned)
 5    modem is on

Bitfields for Compaq SLT/286 power conservation status:
Bit(s)    Description    (Table 0303)
 0    power source (0 internal, 1 external)
 1-2    low battery state
    00 no low battery condition
    01 low battery 1
    10 reserved
    11 low battery 2
 3-4    power conservation mode
    00 automatic, 01 on, 10 off, 11 reserved
--------b-154601-----------------------------
INT 15 - Compaq SLT/286 - MODIFY POWER CONSERVATION/MODEM CONFIGURATION
    AX = 4601h
    BL = system inactivity timeout (1-21 minutes)
        FFh do not change
    CL = video display inactivity timeout (1-63 minutes)
        FFh do not change
    DL = current fixed disk drive inactivity timeout (1-21 minutes)
        FFh do not change
    DH = new modem state (00h turn off, 01h turn on, FFh don't change)
Return: CF clear if successful
        AH = 00h
        BL = current system inactivity timeout (1-21 minutes)
        CL = current video display inactivity timeout (1-63 minutes)
        DL = current fixed disk drive inactivity timeout (1-21 minutes)
        DH = modem state (FFh unchanged, 00h turned off, 01h turned on)
    CF set on error
        AH = error code
        01h input is out of range
        02h no modem present
SeeAlso: AX=4600h,INT 77
--------b-154604-----------------------------
INT 15 - Compaq Contura 486 and "Alladin" 08/05/93 ROMs - GET ???
    AX = 4604h
Return: CF clear if successful
        AL = byte read from I/O port 03F8h
    CF set on error (not supported)
        AH = 86h (unsupported function)
Note:    also supported by 7/26/93 LTE Lite 386 ROM
--------b-154605-----------------------------
INT 15 - Compaq Contura 486 and "Alladin" 08/05/93 ROMs - ???
    AX = 4605h
Return: CF clear if successful
    CF set on error (not supported)
        AH = 86h (unsupported function)
Note:    this function is a NOP (other than clearing CF) in the 08/05/93 version
      of the Contura 486/486c/486cx and "Aladdin" ROM, and the 7/26/93
      LTE Lite 386 ROM
--------J-154900-----------------------------
INT 15 - Far East MS-DOS - GET BIOS TYPE
    AX = 4900h
Return: CF clear if successful
        AH = 00h
        BL = BIOS mode
        00h DOS/V
        01h standard DBCS DOS (hardware DBCS support)
    CF set on error
        AH = 86h (function not supported)
Note:    in practice, DOS/J returns AH=86h; AX DOS does not support this call
SeeAlso: AH=50h,INT 21/AH=30h
--------b-154DD4-----------------------------
INT 15 - HP 95LX - INSTALLATION CHECK
    AX = 4DD4h
Return: BX = 4850h ("HP") if HP 95LX
        CX = ??? (0101h)
        DL = ??? (00h)
SeeAlso: INT 0B"HP 95LX",INT 0F"HP 95LX",INT 5F/AH=00h,INT 60/DI=0100h
SeeAlso: INT 61"HP 95LX"
--------b-154E-------------------------------
INT 15 - HP 95LX - ENABLE/DISABLE LIGHT SLEEP
    AH = 4Eh
    AL = light sleep
        00h disabled
        01h enabled
Note:    when light sleep is disabled, the system will continue running at full
      speed; when enabled, it may automatically slow to conserve batteries
SeeAlso: INT 06"HP 95LX",INT 60/DI=0100h
--------B-154F-------------------------------
INT 15 C - KEYBOARD - KEYBOARD INTERCEPT (AT model 3x9,XT2,XT286,CONV,PS)
    AH = 4Fh
    AL = hardware scan code
    CF set
Return: CF set
       AL = hardware scan code
    CF clear
       scan code should be ignored
Note:    called by INT 09 handler to translate scan codes; the INT 09 code does
      not examine the scan code it reads from the keyboard until after
      this function returns.  This permits software to rearrange the
      keyboard; for example, swapping the CapsLock and Control keys, or
      turning the right Shift key into Enter.
SeeAlso: INT 09,INT 15/AH=C0h
--------J-155000-----------------------------
INT 15 - DOS/V - FONT SUBSYSTEM ACCESS
    AH = 50h
    AL = which function address to retrieve
        00h "read font" function
        01h "write font" function
    BL = 00h
    BH = character size (00h single-byte, 01h double-byte)
    DH = width of character cell
    DL = height of character cell
    BP = code page (see #0304)
Return: CF clear if successful
        AH = 00h
        ES:BX -> requested function's address
    CF set on error
        AH = error code (see #0305)
SeeAlso: AH=49h

(Table 0304)
Values for DOS/V code page:
 0    default
 437    US English
 932    Japanese
 934    Korea
 936    China
 938    Taiwan

(Table 0305)
Values for DOS/V error code:
 01h    invalid font type in BH
 02h    BL not zero
 03h    invalid font size
 04h    invalid code page
 80h    unsupported function (PC)
 86h    unsupported function (XT)
--------T-1550-------------------------------
INT 15 - VMIX v2.???+ - "sys_vm_page" - SET NEW VIRTUAL PAGE TABLE
    AH = 50h
    BX = segment of page directory table
    CX = page number of page table
SeeAlso: AH=10h"VMiX",AH=51h"VMiX",AH=52h"VMiX"
--------T-1551-------------------------------
INT 15 - VMiX v2.???+ - "sys_vm_func" - EXECUTE FUNCTION IN PROTECTED MODE
    AH = 51h
    STACK:    DWORD    selector:offset of function
Return: registers as returned by function
Note:    executes function with privilege level 0 (highest privilege)
SeeAlso: AH=10h"VMiX",AH=52h"VMiX"
--------B-155101-----------------------------
INT 15 - SYSTEM - later PS/2s - EXPANSION UNIT, RETURN CONFIGURATION NUMBER
    AX = 5101h
Return: CF set if successful
        AH = 00h
        AL = current configuration number
        00h system unit only
        FFh configuration not recognized
        BX = status flag
        bits 0-14: reserved
        bit 15: additional data is available (location TBD)
    CF clear on error
        AH = status
        01h expansion unit is not present
        86h function not supported
Note:    CF convention is the reverse of the standard convention for this
      interrupt.  (Perhaps a typo in the IBM BIOS Tech Ref?)
--------T-1552-------------------------------
INT 15 - VMiX v2.???+ - "sys_vm_init" - INITIALIZE PROTECTED-MODE ENVIRONMENT
    AH = 52h
SeeAlso: AH=50h"VMiX",AH=51h"VMiX"
--------p-155300-----------------------------
INT 15 - Advanced Power Management Specification - INSTALLATION CHECK
    AX = 5300h
    BX = device ID of system BIOS (0000h)
Return: CF clear if successful
        AH = major version (BCD)
        AL = minor version (BCD)
        BX = 504Dh ("PM")
        CX = flags (see #0306)
    CF set on error
        AH = error code (06h,86h) (see #0307)

Bitfields for APM flags:
Bit(s)    Description    (Table 0306)
 0    16-bit protected mode interface supported
 1    32-bit protected mode interface supported
 2    CPU idle call reduces processor speed
 3    BIOS power management disabled
 4    BIOS power management disengaged (APM v1.1)
 5-7    reserved

(Table 0307)
Values for APM error code:
 01h    power management functionality disabled
 02h    interface connection already in effect
 03h    interface not connected
 04h    real-mode interface not connected
 05h    16-bit protected-mode interface already connected
 06h    16-bit protected-mode interface not supported
 07h    32-bit protected-mode interface already connected
 08h    32-bit protected-mode interface not supported
 09h    unrecognized device ID
 0Ah    invalid parameter value in CX
 0Bh-1Fh reserved for other interface and general errors
 20h-3Fh reserved for CPU errors
 40h-5Fh reserved for device errors
 60h    can't enter requested state
 61h-7Fh reserved for other system errors
 80h    no power management events pending
 81h-85h reserved for other power management event errors
 86h    APM not present
 87h-9Fh reserved for other power management event errors
--------p-155301-----------------------------
INT 15 - Advanced Power Management Specification - CONNECT REAL-MODE INTERFACE
    AX = 5301h
    BX = device ID of system BIOS (0000h)
Return: CF clear if successful
    CF set on error
        AH = error code (02h,05h,07h,09h) (see #0307)
SeeAlso: AX=5302h,AX=5303h,AX=5304h
--------p-155302-----------------------------
INT 15 R - Advanced Power Management Spec - CONNECT 16-BIT PROTMODE INTERFACE
    AX = 5302h
    BX = device ID of system BIOS (0000h)
Return: CF clear if successful
        AX = real-mode segment base address of protected-mode 16-bit code
        segment
        BX = offset of entry point
        CX = real-mode segment base address of protected-mode 16-bit data
        segment
        ---APM v1.1---
        SI = APM BIOS code segment length
        DI = APM BIOS data segment length
    CF set on error
        AH = error code (02h,05h,06h,07h,09h) (see #0307)
Notes:    the caller must initialize two consecutive descriptors with the
      returned segment base addresses; these descriptors must be valid
      whenever the protected-mode interface is called, and will have
      their limits arbitrarily set to 64K.
    the protected mode interface is invoked by making a far call with the
      same register values as for INT 15; it must be invoked while CPL=0,
      the code segment descriptor must have a DPL of 0, the stack must be
      in a 16-bit segment and have enough room for BIOS use and possible
      interrupts, and the current I/O permission bit map must allow access
      to the I/O ports used for power management.
    functions 00h-03h are not available from protected mode
SeeAlso: AX=5301h,AX=5303h,AX=5304h
--------p-155303-----------------------------
INT 15 - Advanced Power Management Spec - CONNECT 32-BIT PROTMODE INTERFACE
    AX = 5303h
    BX = device ID of system BIOS (0000h)
Return: CF clear if successful
        AX = real-mode segment base address of protected-mode 32-bit code
        segment
        EBX = offset of entry point
        CX = real-mode segment base address of protected-mode 16-bit code
        segment
        DX = real-mode segment base address of protected-mode 16-bit data
        segment
        ---APM v1.1---
        SI = APM BIOS code segment length
        DI = APM BIOS data segment length
    CF set on error
        AH = error code (02h,05h,07h,08h,09h) (see #0307)
Notes:    the caller must initialize three consecutive descriptors with the
      returned segment base addresses for 32-bit code, 16-bit code, and
      16-bit data, respectively; these descriptors must be valid whenever
      the protected-mode interface is called, and will have their limits
      arbitrarily set to 64K.
    the protected mode interface is invoked by making a far call to the
      32-bit code segment with the same register values as for INT 15; it
      must be invoked while CPL=0, the code segment descriptor must have a
      DPL of 0, the stack must be in a 32-bit segment and have enough room
      for BIOS use and possible interrupts, and the current I/O permission
      bit map must allow access to the I/O ports used for power management.
    functions 00h-03h are not available from protected mode
SeeAlso: AX=5301h,AX=5302h,AX=5304h
--------p-155304-----------------------------
INT 15 - Advanced Power Management Specification - DISCONNECT INTERFACE
    AX = 5304h
    BX = device ID of system BIOS (0000h)
Return: CF clear if successful
    CF set on error
        AH = error code (03h,09h) (see #0307)
SeeAlso: AX=5301h,AX=5302h,AX=5303h
--------p-155305-----------------------------
INT 15 - Advanced Power Management Specification - CPU IDLE
    AX = 5305h
Return: CF clear if successful (after system leaves idle state)
    CF set on error
        AH = error code (03h,0Bh) (see #0307)
Notes:    call when the system is idle and should be suspended until the next
      system event or interrupt
    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
    if an interrupt causes the system to resume normal processing, the
      interrupt may or may not have been handled when the BIOS returns
      from this call; thus, the caller should allow interrupts on return
    interrupt handlers may not retain control if the BIOS allows
      interrupts while in idle mode even if they are able to determine
      that they were called from idle mode
    the caller should issue this call continuously in a loop until it needs
      to perform some processing of its own
SeeAlso: AX=1000h,AX=5306h,INT 2F/AX=1680h
--------p-155306-----------------------------
INT 15 - Advanced Power Management Specification - CPU BUSY
    AX = 5306h
Return: CF clear if successful
    CF set on error
        AH = error code (03h,0Bh) (see #0307)
Notes:    called to ensure that the system runs at full speed even on systems
      where the BIOS is unable to recognize increased activity (especially
      if interrupts are hooked by other programs and not chained to the
      BIOS)
    this call may be made even when the system is already running at full
      speed, but it will create unnecessary overhead
    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
SeeAlso: AX=5305h
--------p-155307-----------------------------
INT 15 - Advanced Power Management Specification - SET POWER STATE
    AX = 5307h
    BX = device ID (see #0308)
    CX = system state ID (see #0309)
Return: CF clear if successful
    CF set on error
        AH = error code (01h,03h,09h,0Ah,0Bh,60h) (see #0307)
Note:    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
SeeAlso: AX=530Ch

(Table 0308)
Values for APM device IDs:
 0000h    system BIOS
 0001h    all devices for which the system BIOS manages power
 01xxh    display (01FFh for all attached display devices)
 02xxh    secondary storage (02FFh for all attached secondary storage devices)
 03xxh    parallel ports (03FFh for all attached parallel ports)
 04xxh    serial ports (04FFh for all attached serial ports)
---APM v1.1---
 05xxh    network adapters (05FFh for all attached network adapters)
 06xxh    PCMCIA sockets (06FFh for all)
 0700h-DFFFh reserved
 Exxxh    OEM-defined power device IDs
 F000h-FFFFh reserved

(Table 0309)
Values for system state ID:
 0000h    ready (not supported for device ID 0001h)
 0001h    stand-by
 0002h    suspend
 0003h    off (not supported for device ID 0001h)
---APM v1.1---
 0004h    last request processing notification (only for device ID 0001h)
 0005h    last request rejected (only for device ID 0001h)
 0006h-001Fh reserved system states
 0020h-003Fh OEM-defined system states
 0040h-007Fh OEM-defined device states
 0080h-FFFFh reserved device states
--------p-155307CX0001-----------------------
INT 15 - Advanced Power Management Specification - SYSTEM STAND-BY
    AX = 5307h
    CX = 0001h
    BX = 0001h (device ID for all power-managed devices)
Return: CF clear
Notes:    puts the entire system into stand-by mode; normally called in response
      to a System Stand-by Request notification after any necessary
      processing, but may also be invoked at the caller's discretion
    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
    the stand-by state is typically exited on an interrupt
SeeAlso: AX=4280h,AX=5307h/BX=0001h/CX=0002h,AX=530Bh
--------p-155307CX0002-----------------------
INT 15 - Advanced Power Management Specification - SUSPEND SYSTEM
    AX = 5307h
    CX = 0002h
    BX = 0001h (device ID for all power-managed devices)
Return: after system is resumed
    CF clear
Notes:    puts the entire system into a low-power suspended state; normally
      called in response to a Suspend System Request notification after
      any necessary processing, but may also be invoked at the caller's
      discretion
    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
    the caller may need to update its date and time values because the
      system could have been suspended for a long period of time
SeeAlso: AX=5307h/BX=0001h/CX=0001h,AX=530Bh
--------p-155308-----------------------------
INT 15 - Advanced Power Management Spec - ENABLE/DISABLE POWER MANAGEMENT
    AX = 5308h
    BX = device ID for all devices power-managed by APM
        0001h (APM v1.1)
        FFFFh (APM v1.0)
    CX = new state
        0000h disabled
        0001h enabled
Return: CF clear if successful
    CF set on error
        AH = error code (01h,03h,09h,0Ah,0Bh) (see #0307)
Notes:    when power management is disabled, the system BIOS will not
      automatically power down devices, enter stand-by or suspended mode,
      or perform any power-saving actions in response to AX=5305h calls
    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
SeeAlso: AX=5309h,AX=530Dh,AX=530Fh
--------p-155309-----------------------------
INT 15 - Advanced Power Management Specification - RESTORE POWER-ON DEFAULTS
    AX = 5309h
    BX = device ID for all devices power-managed by APM
        0001h (APM v1.1)
        FFFFh (APM v1.0)
Return: CF clear if successful
    CF set on error
        AH = error code (09h) (see #0307)
Note:    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
SeeAlso: AX=5308h
--------p-15530ABX0001-----------------------
INT 15 - Advanced Power Management Specification - GET POWER STATUS
    AX = 530Ah
    BX = 0001h (device ID for all devices power-managed by APM)
Return: CF clear if successful
        BH = AC line status
        00h off-line
        01h on-line
        02h on backup power (APM v1.1)
        FFh unknown
        other reserved
        BL = battery status (see #0310)
        CH = battery flag (APM v1.1) (see #0311)
        CL = remaining battery life, percentage
        00h-64h (0-100) percentage of full charge
        FFh unknown
        DX = remaining battery life, time (APM v1.1) (see #0312)
    CF set on error
        AH = error code (09h) (see #0307)
Note:    should not be called from within a hardware interrupt handler to avoid
      reentrance problems

(Table 0310)
Values for APM v1.0+ battery status:
 00h    high
 01h    low
 02h    critical
 03h    charging
 FFh    unknown
 other    reserved

Bitfields for APM v1.1 battery flag:
Bit(s)    Description    (Table 0311)
 0    high
 1    low
 2    critical
 3    charging
 4-6    reserved
 7    no system battery
Note:    all bits set (FFh) if unknown

Bitfields for APM v1.1 remaining battery life:
Bit(s)    Description    (Table 0312)
 15    time units: 0=seconds, 1=minutes
 14-0    battery life in minutes or seconds
Note:    all bits set (FFFFh) if unknown
--------p-15530B-----------------------------
INT 15 - Advanced Power Management Specification - GET POWER MANAGEMENT EVENT
    AX = 530Bh
Return: CF clear if successful
        BX = event code (see #0313)
    CF set on error
        AH = error code (03h,0Bh,80h) (see #0307)
Notes:    although power management events are often asynchronous, notification
      will not be made until polled via this call to permit software to
      only receive event notification when it is prepared to process
      power management events; since these events are not very time-
      critical, it should be sufficient to poll once or twice per second
    the critical resume notification is made after the system resumes
      from an emergency suspension; normally, the system BIOS only notifies
      its partner that it wishes to suspend and relies on the partner to
      actually request the suspension, but no notification is made on an
      emergency suspension
    should not be called from within a hardware interrupt handler to avoid
      reentrance problems
SeeAlso: AX=5307h,AX=5307h/BX=0001h/CX=0001h,AX=5307h/BX=0001h/CX=0002h

(Table 0313)
Values for APM event code:
 0001h    system stand-by request
 0002h    system suspend request
 0003h    normal resume system notification
 0004h    critical resume system notification
 0005h    battery low notification
---APM v1.1---
 0006h    power status change notification
 0007h    update time notification
 0008h    critical system suspend notification
 0009h    user system standby request notification
 000Ah    user system suspend request notification
 000Bh    system standby resume notification
 000Ch-00FFh reserved system events
 01xxh    reserved device events
 02xxh    OEM-defined APM events
 0300h-FFFFh reserved
--------p-15530C-----------------------------
INT 15 - Advanced Power Management v1.1 - GET POWER STATE
    AX = 530Ch
    BX = device ID (see #0308)
Return: CF clear if successful
        BX = system state ID (see #0309)
    CF set on error
        AH = error code (01h,09h) (see #0307)
SeeAlso: AX=5307h
--------p-15530D-----------------------------
INT 15 - Advanced Power Management v1.1 - EN/DISABLE DEVICE POWER MANAGEMENT
    AX = 530Dh
    BX = device ID (see #0308)
    CX = function
        0000h disable power management
        0001h enable power management
Return: CF clear if successful
    CF set on error
        AH = error code (01h,03h,09h,0Ah,0Bh) (see #0307)
SeeAlso: AX=5308h,AX=530Fh
--------p-15530E-----------------------------
INT 15 - Advanced Power Management v1.1 - DRIVER VERSION
    AX = 530Eh
    BX = device ID of system BIOS (0000h)
    CH = APM driver major version (BCD)
    CL = APM driver minor version (BCD)
Return: CF clear if successful
        AH = APM connection major version (BCD)
        AL = APM connection minor version (BCD)
    CF set on error
        AH = error code (03h,09h,0Bh) (see #0307)
SeeAlso: AX=5300h
--------p-15530F-----------------------------
INT 15 - Advanced Power Management v1.1 - ENGAGE/DISENGAGE POWER MANAGEMENT
    AX = 530Fh
    BX = device ID (see #0308)
    CX = function
        0000h disengage power management
        0001h engage power management
Return: CF clear if successful
    CF set on error
        AH = error code (01h,09h) (see #0307)
Note:    unlike AX=5308h, this call does not affect the functioning of the APM
      BIOS
SeeAlso: AX=5308h,AX=530Dh
--------p-155380BH7F-------------------------
INT 15 - Advanced Power Management v1.1 - OEM APM INSTALLATION CHECK
    AX = 5380h
    BH = 7Fh
Return: CF clear if successful
        BX = OEM identifier
        all other registers OEM-defined
    CF set on error
        AH = error code (03h) (see #0307)
--------p-155380-----------------------------
INT 15 - Advanced Power Management v1.1 - OEM APM FUNCTIONS
    AX = 5380h
    BH <> 7Fh
    all other registers OEM-defined
Return: OEM-defined
SeeAlso: AX=5380h/BH=7Fh
--------T-155400-----------------------------
INT 15 C - Omniview Multitasker - INSTALLATION NOTIFICATION
    AX = 5400h
    ES:BX -> device information tables
    DI:DX -> dispatcher entry point
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5407h,INT 2F/AX=DE00h
--------T-155401-----------------------------
INT 15 C - Omniview Multitasker - PROCESS CREATION
    AX = 5401h
    ES:BX = process handle
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5402h,INT 2F/AX=DE04h
--------T-155402-----------------------------
INT 15 C - Omniview Multitasker - PROCESS DESTRUCTION
    AX = 5402h
    ES:DX = process handle
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5401h,INT 2F/AX=DE05h
--------T-155403-----------------------------
INT 15 C - Omniview Multitasker - SAVE
    AX = 5403h
    ES:DX = process swapping out
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5404h,INT 2F/AX=DE08h
--------T-155404-----------------------------
INT 15 C - Omniview Multitasker - RESTORE
    AX = 5404h
    ES:DX = process swapping in
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5403h,INT 2F/AX=DE09h
--------T-155405-----------------------------
INT 15 C - Omniview Multitasker - SWITCHING TO BACKGROUND
    AX = 5405h
    ES:DX = process swapping in
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5406h
--------T-155406-----------------------------
INT 15 C - Omniview Multitasker - SWITCHING TO FOREGROUND
    AX = 5406h
    ES:DX = process swapping in
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5405h
--------T-155407-----------------------------
INT 15 C - Omniview Multitasker - EXIT NOTIFICATION
    AX = 5407h
Note:    called by OmniView to notify programs loaded before OmniView of state
      changes inside OmniView
SeeAlso: AX=5400h,INT 2F/AX=DE03h
--------b-1560------------------------------------
INT 15 - HUNTER 16 - SET SYSTEM CLOCK SPEED
    AH = 60h
    AL = new speed
        00h normal (8 MHz)
        01h Slow Mode 1 (4 MHz)
        02h Slow Mode 2 (2 MHz)
Note:    the Husky Hunter 16 is an 8088-based ruggedized laptop.     Other family
      members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
SeeAlso: AX=6301h
--------b-1561------------------------------------
INT 15 - HUNTER 16 - GET POWER LEVEL
    AH = 61h
Return: AH = percentage of full power left (0..100)
Desc:    determine how much battery power is left
SeeAlso: AH=62h,AH=66h,AH=73h"HUNTER"
--------b-1562------------------------------------
INT 15 - HUNTER 16 - SET LOW POWER THRESHOLD
    AH = 62h
    AL = level (00h 5%, 01h 10%, ... 12h 95%)
    BX = interval between power low warnings in seconds (1..600)
Return: AH = Status
Desc:    set the level (relative to full power) when power-low warnings begin
      and the interval between the warnings
SeeAlso: AH=61h,AH=65h,AH=66h
--------b-156300----------------------------------
INT 15 - HUNTER 16 - GET IDLE TIMEOUT
    AX = 6300h
Return: AH = status
    BX = timeout in seconds (0-3600)
Desc:    get the idle timeout value, the interval without keyboard or
       communications activity before the system shuts down
SeeAlso: AX=6301h
--------b-156301----------------------------------
INT 15 - HUNTER 16 - SET IDLE TIMEOUT
    AX = 6301h
    BX = timeout in seconds (0-3600)
Desc:    sets the idle timeout value, the interval without keyboard or
      communications activity before the system shuts down
SeeAlso: AX=6300h
--------b-1564------------------------------------
INT 15 - HUNTER 16 - CONTROL RESUME MODE
    AH = 64h
    AL = new state
        00h disable Resume mode
        01h enable Resume mode
Return: AH = status
Desc:    turn Resume mode on or off. In Resume mode the system starts in
      the application that was running when it shut down as if nothing
      had happened.
SeeAlso: AH=67h,AH=68h,AH=69h
--------b-1565------------------------------------
INT 15 - HUNTER 16 - AUTHORISE CHARGING
    AH = 65h
    AL = charging level
        01h charging not allowed
        02h charging allowed until power down
        03h charging allowed until batteries changed or fail.
        Ask user if charging is still allowed on next poweron
        04h charging allowed indefinitely
    BX = 0203h
    CX = 0405h
    DX = 0607h
Return: AH = status
SeeAlso: AH=66h,AH=68h
--------b-1566------------------------------------
INT 15 - HUNTER 16 - SET BATTERY LEVEL
    AH = 66h
    AL = level in percent of maximum (0..100)
Return: AH = status
SeeAlso: AH=61h,AH=65h
--------b-1567------------------------------------
INT 15 - HUNTER 16 - CONTROL STOP MODE
    AH = 67h
    AL = mode when waiting for input
        00h use STOP mode (allows communication)
        01h use HALT mode (disallows communication)
Return: AH = status
Desc:    select the power save mode to use when waiting for input
SeeAlso: AH=69h
--------b-1568------------------------------------
INT 15 - HUNTER 16 - REQUEST POWER DOWN
    AH = 68h
Desc:    turns off the Hunter 16 if power down is allowed (see AH=69h)
SeeAlso: AH=69h
--------b-1569------------------------------------
INT 15 - HUNTER 16 - CONTROL POWER DOWN AVAILABILITY
    AH = 69h
    AL = mode
        00h inhibit power down
        01h allow power down
Return: AH = status
SeeAlso: AH=67h,AH=68h,AH=6Ah
--------b-156A------------------------------------
INT 15 - HUNTER 16 - CONTROL SLOW MODE
    AH = 6Ah
    AL = mode
        00h inhibit Slow mode
        01h allow Slow mode
Return: AH = status
SeeAlso: AH=69h
--------b-156B------------------------------------
INT 15 - HUNTER 16 - GET ROM BIOS VERSION
    AH = 6Bh
Return: BH = version number (ASCII)
    BL = release number (ASCII)
    CH = minor release number (ASCII)
    CL = minor release number (ASCII)
SeeAlso: AH=6Ch
--------b-156C------------------------------------
INT 15 - HUNTER 16 - GET SERIAL NUMBER
    AH = 6Ch
Return: BL:CX = BCD serial number
Note:    when shipped, all Hunter 16s have the same Serial Number, but a
      different number can be stored (see AH=72h)
SeeAlso: AH=6Bh,AH=72h
--------b-156D------------------------------------
INT 15 - HUNTER 16 - GET EVENT DETAIL
    AH = 6Dh
Return: AH = 00h if successful
    CX:BX = event flags bit 0..31 (see #0314)
Note:    this function allows testing for events
SeeAlso: AH=6Eh,AH=6Fh

Bitfields for HUNTER 16 events:
Bit(s)    Description    (Table 0314)
 6    RI received
 5    RTC Alarm
 4    data received on COM2
 3    data received on COM1
 2    error on COM2
 1    error on COM1
 0    PWR button pressed
--------b-156E------------------------------------
INT 15 - HUNTER 16 - ENABLE/TRAP EVENT
    AH = 6Eh
    AL = Software Interrupt
          00h  do not trap event
          else trap as software interrupt number AL
    BH = event number (see AH=6Dh)
    BL = enable mask
        00h disable event
        01h enable event
Return: AH = 00h if successful
SeeAlso: AH=6Dh,AH=6Fh
--------b-156F------------------------------------
INT 15 - HUNTER 16 - ACKNOWLEDGE EVENT
    AH = 6Fh
    AL = event number (see AH=6Dh)
Return: AH = 00h if successful
Desc:    Acknowledges the event, so the next similar event can be detected
SeeAlso: AH=6Dh"HUNTER",AH=6Eh
----------157000-----------------------------
INT 15 - Tandy 1000SL/TL - READ FROM EEPROM
    AX = 7000h
    BL = number of word to read (00h-3Fh)
Return: CF clear if function supported
        DX = contents of EEPROM word
Note:    newer Tandy 1000-series machines use EEPROM instead of CMOS RAM in
      the clock chip to store system configuration information
SeeAlso: AX=7001h
----------157001-----------------------------
INT 15 - Tandy 1000SL/TL - WRITE TO EEPROM
    AX = 7001h
    BL = number of word to read (00h-3Fh)
    DX = new value for EEPROM word
Return: CF clear if function supported
Note:    the EEPROMs are normally written only by the system setup program;
      changing the values can badly mess up a Tandy
SeeAlso: AX=7000h
--------b-1570------------------------------------
INT 15 - HUNTER 16 - CONTROL SOUND
    AH = 70h
    AL = new state
        00h disable sound
        else enable sound
Note:    the Husky Hunter 16 is an 8088-based ruggedized laptop.     Other family
      members are the Husky Hunter, Husky Hunter 16/80, and Husky Hawk.
--------b-1571------------------------------------
INT 15 - HUNTER 16 - SELECT POWER UP KEYS
    AH = 71h
    BL = column
    BH = row
    AL = column switch (00h disable, 01h enable)
    CL = row switch (00h disable, 01h enable)
Return: AH = status
SeeAlso: AH=7Bh,AH=88h
--------b-157200----------------------------------
INT 15 - HUNTER 16 - RESET SERIAL NUMBER
    AX = 7200h
Return: AH = 00h if successful
Desc:    reset the serial number to the default serial number present when the
      Hunter 16 was shipped
SeeAlso: AH=6Ch,AH=72h
--------b-1572------------------------------------
INT 15 - HUNTER 16 - REDIRECT SERIAL NUMBER
    AH = 72h
    AL nonzero
    DS:BX -> new serial number (6 ASCII digits)
Return: AH = 00h if successful
Desc:    install a new serial number
SeeAlso: AH=6Ch,AX=7200h
--------b-1573------------------------------------
INT 15 - HUNTER 16 - GET ORACLE GT POWER LEVEL
    AH = 73h
    AL = drive (0: A:, 1: B:)
Return: AH = status
        00h successful
        FFh Oracle GT drive not connected
    AL = power level in percent of maximum (0..100)
Desc:    get the power remaining in the Oracle GT batteries
SeeAlso: AH=61h
--------b-1574------------------------------------
INT 15 - HUNTER 16 - SET BACKLIGHT POWER UP STATE
    AH = 74h
    AL = new level
        01h off
        02h unchanged
        03h change level
        BL = desired level (00h-7Fh)
Return: AH = status
Desc:    select the backlight level to use when the Hunter is next turned on
SeeAlso: AH=64h,AH=75h,INT 10/AH=64h,INT 10/AH=78h
--------b-1575------------------------------------
INT 15 - HUNTER 16 - SET CONTRAST POWER UP STATE
    AH = 75h
    AL = new level
        01h off
        02h unchanged
        03h change level
        BL = desired level (00h-7Fh)
Return: AH = status
Desc:    select the LCD contrast level to use when the Hunter is next turned on
SeeAlso: AH=63h,AH=74h
--------b-1576------------------------------------
INT 15 - HUNTER 16 - CONTROL POWER SAVE
    AH = 76h
    BX = power save control (see #0315)
SeeAlso: AH=74h

Bitfields for HUNTER 16 power save control:
Bit(s)    Description    (Table 0315)
 0    power save enabled
 1    inhibit power save when waiting for COM1 data
 2    inhibit power save when waiting for COM2 data
 3    inhibit power save when waiting for data from barcode wand
 4    inhibit power up on timer tick
--------b-1579------------------------------------
INT 15 - HUNTER 16 - REDIRECT LPT1
    AH = 79h
    AL = port to which to redirect (00h COM1, 01h COM2)
--------b-157A------------------------------------
INT 15 - HUNTER 16 - INVOKE HOT KEY
    AH = 7Ah
Desc:    this function has the same effect as pressing the HOT key
SeeAlso: AH=7Bh
--------b-157B------------------------------------
INT 15 - HUNTER 16 - CONTROL HOT KEY
    AH = 7Bh
    AL = 00h prevent HOT key
        else allow HOT key
Desc:    Allow or prevent the HOT key function which is used to examine and
      change the Hunter setup
SeeAlso: AH=71h,AH=7Ah,AH=7Ch
--------b-157C------------------------------------
INT 15 - HUNTER 16 - CONTROL HOT KEY POWER OPTION
    AH = 7Ch
    AL = 00h prevent HOT key power option
        else allow HOT key power option
Desc:    allow or prevent changing the power options
SeeAlso: AH=7Bh,AH=7Dh
--------b-157D------------------------------------
INT 15 - HUNTER 16 - OVERRIDE LOW POWER TURN OFF
    AH = 7Dh
    AL = 00h turn off after 10 warnings
        else never turn off
Desc:    specify whether the Hunter 16 turns off after 10 low power warnings
SeeAlso: AH=7Ch
--------b-157E------------------------------------
INT 15 - HUNTER 16 - CONTROL BATTERY CHANGE FACILITIES (APM)
    AH = 7Eh
    AL = 00h do not prompt
        else prompt
Desc:    select whether the user is prompted for the battery state if the
      battery cap has been off when the system is turned on
SeeAlso: AH=7Fh
--------b-157F------------------------------------
INT 15 - HUNTER 16 - SET BATTERY TYPE (APM)
    AH = 7Fh
    AL = battery type
        00h     non-rechargeable
        else rechargeable
SeeAlso: AH=7Eh
--------!---Section--------------------------