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Text File | 1989-07-23 | 189KB | 5,293 lines

INT 28 - DOS 2+ internal - KEYBOARD BUSY LOOP This interrupt is called from inside the "get input from keyboard" routine in DOS, if and only if it is safe to use INT 21 to access the disk at that time. It is used primarily by the PRINT.COM routines and TSR programs, but any number of other routines could be chained to it by saving the original vector, and calling it with a FAR call (or just JMPing to it) at the end of the new routine. The INT 28h handler may invoke any INT 21h function except functions 00h through 0Ch (and 50h/51h under DOS 2.xx unless DOS CritErr flag is set). Until some program installs its own routine, this interrupt vector simply points to an IRET opcode. --------------------------------------------- INT 29 - DOS 2+ internal - FAST PUTCHAR This interrupt is called from the DOS output routines if output is going to a device rather than a file, and the device driver's attribute word has bit 3 (04h) set to "1". --------------------------------------------- INT 2A - Microsoft Networks - NETWORK INSTALLATION CHECK AH = 00h Return: AH <> 00h if installed --------------------------------------------- INT 2A - Microsoft Networks - EXECUTE NETBIOS REQUEST AH = 01h ??? Return: ??? --------------------------------------------- INT 2A - Microsoft Networks - SET NET PRINTER MODE AH = 02h ??? Return: ??? --------------------------------------------- INT 2A - Microsoft Networks - CHECK DIRECT I/O AX = 0300h DS:SI -> ASCIZ disk device name Return: CF clear if allowed --------------------------------------------- INT 2A - Microsoft Networks - EXECUTE NETBIOS AH = 04h AL = 00h for error retry, 01h for no retry ES:BX -> NCB Return: AX = 0000h for no error AH = 01h, AL = error code --------------------------------------------- INT 2A - Microsoft Networks - GET NETWORK RESOURCE INFORMATION AX = 0500h Return: AX = reserved BX = number of network names CX = number of commands DX = number of sessions --------------------------------------------- INT 2A - NETBIOS - NETWORK PRINT-STREAM CONTROL AH = 06h AL = 01h set concatenation mode 02h set truncation mode (default) 03h truncate print stream now Return: CF set on error AX = error code Note: subfunction 03h is equivalent to Ctrl/Alt/keypad-* --------------------------------------------- INT 2A - MS Networks or NETBIOS - ??? AX = 2001h ??? Return: ??? Note: intercepted by DESQview 2.x --------------------------------------------- INT 2A - Microsoft Networks - BEGIN DOS CRITICAL SECTION AH = 80h AL = 01h to 06h critical section number Note: SHARE.EXE uses critical section number 01h --------------------------------------------- INT 2A - Microsoft Networks - END DOS CRITICAL SECTION AH = 81h AL = 01h to 06h critical section number Note: SHARE.EXE uses critical section number 01h --------------------------------------------- INT 2A - Microsoft Networks - SERVER HOOK AH = 82h STACK: AX from call to INT 21 Return: stack unchanged Note: called by the INT 21h function dispatcher for function 0 and functions greater than 0Ch except 59h --------------------------------------------- INT 2A - Microsoft Networks - KEYBOARD BUSY LOOP AH = 84h Note: similar to DOS's INT 28h --------------------------------------------- INT 2B - Internal routine for MSDOS (IRET) --------------------------------------------- INT 2C - Internal routine for MSDOS (IRET) --------------------------------------------- INT 2D - Internal routine for MSDOS (IRET) --------------------------------------------- INT 2E - DOS 2+ internal - EXECUTE COMMAND DS:SI -> counted CR-terminated command string Note: the top-level command.com executes the command all registers including SS and SP are destroyed as in INT 21/AH=4Bh Since COMMAND.COM processes the string as if typed from the keyboard, the transient portion needs to be present, and the calling program must ensure that sufficient memory to load the transient portion can be allocated by DOS if necessary. --------------------------------------------- INT 2F - Multiplex - notes AH = identifier of program which is to handle the interrupt 00h-7Fh reserved for DOS C0h-FFh reserved for applications AL is the function code This is a general mechanism for verifying the presence of a TSR and communicating with it. --------------------------------------------- INT 2F - Multiplex - BMB Compuscience Canada Utilities Interface AH = xx (dynamically assigned based upon a search for a multiplex number which doesn't answer installed) AL = 00h install check ES:DI = EBEB:BEBE Return: AL = 00h not installed 01h not installed, not OK to install FFh installed and if ES:DI != EBEB:BEBE then ES:DI will point to a string 'BMB xxxx' where xxxx is a product name and version --------------------------------------------- INT 2F - Multiplex - PRINT (DOS 3.1+) - GIVE PRINT A TIME SLICE AX = 0080h Return: after PRINT executes --------------------------------------------- INT 2F - Multiplex - PRINT - INSTALLATION CHECK AX = 0100h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed --------------------------------------------- INT 2F - Multiplex - PRINT - SUBMIT FILE AX = 0101h DS:DX -> packet (see below) Return: CF set on error AX = error code Format of submit packet: Offset Size Description 00h BYTE level (must be 0) 01h DWORD pointer to ASCIZ filename (no wildcards) --------------------------------------------- INT 2F - Multiplex - PRINT - REMOVE FILE AX = 0102h DS:DX -> ASCIZ file name (wildcards allowed) Return: CF set on error AX = error code --------------------------------------------- INT 2F - Multiplex - PRINT - REMOVE ALL FILES AX = 0103h Return: CF set on error AX = error code --------------------------------------------- INT 2F - Multiplex - PRINT - HOLD QUEUE/GET STATUS AX = 0104h Return: CF set on error AX = error code 01h function invalid 02h file not found 03h path not found 04h too many open files 05h access denied 08h queue full 09h spooler busy 0Ch name too long 0Fh drive invalid DX = error count DS:SI -> print queue (null-string terminated list of 64-byte ASCIZ file names) --------------------------------------------- INT 2F - Multiplex - PRINT - RESTART QUEUE AX = 0105h Return: CF set on error AX = error code --------------------------------------------- INT 2F - Multiplex - PRINT (DOS 3.3) - CHECK IF OUTPUT DEVICE READY??? AX = 0106h ??? Return: ??? Note: eventually calls device driver for spooled device with request 0Ah, looping until not busy or timeout --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIR/REDIRIFS internal - INSTALL CHECK AX = 0200h Return: AL = FFh if installed --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIR/REDIRIFS internal - ??? AX = 0201h Return: nothing??? Note: called by DOS 3.3 PRINT.COM --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIR/REDIRIFS internal - ??? AX = 0202h ??? Return: nothing??? Note: called by DOS 3.3 PRINT.COM --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIR/REDIRIFS internal - ??? AX = 0203h Return: nothing??? Note: called by DOS 3.3 PRINT.COM --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIR/REDIRIFS internal - ??? AX = 0204h ??? Return: nothing??? Note: called by DOS 3.3 PRINT.COM --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIR/REDIRIFS internal - ??? AX = 02xxh ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DOS 3+ CRITICAL ERROR HANDLER - INSTALLATION CHECK AX = 0500h Return: AL = 00h not installed, OK to install 01h not installed, can't install FFh installed Note: this set of functions allows a user program to partially or completely override the default critical error handler in COMMAND.COM --------------------------------------------- INT 2F - Multiplex - DOS 3+ CRITICAL ERROR HANDLER - HANDLE ERROR AH = 05h AL = extended error code (not zero) Return: CF clear ES:DI -> ASCIZ error message AL = ??? CF set: use default error handler Note: called at start of COMMAND.COM's default critical error handler if installed by a user program, allowing partial or complete overriding of the default error action --------------------------------------------- INT 2F - Multiplex - ASSIGN - INSTALLATION CHECK AX = 0600h Return: AH <> 00h if installed --------------------------------------------- INT 2F - Multiplex - ASSIGN - GET MEMORY SEGMENT AX = 0601h Return: ES = segment of ASSIGN work area --------------------------------------------- INT 2F - Multiplex - DRIVER.SYS support - INSTALLATION CHECK AX = 0800h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed --------------------------------------------- INT 2F - Multiplex - DRIVER.SYS support - ADD NEW BLOCK DEVICE AX = 0801h DS:DI -> device driver header Note: moves down list of drivers, copying and modifying word at offset 29h device driver appended to driver chain --------------------------------------------- INT 2F - Multiplex - DRIVER.SYS support - EXECUTE DEVICE DRIVER REQUEST AX = 0802h ES:BX -> device driver request header (see AX=1510h) Return: request header updated as per requested operation --------------------------------------------- INT 2F - Multiplex - SHARE - INSTALLATION CHECK AX = 1000h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed Note: values of AL other than 00h appear to put DOS 3.3 SHARE into an infinite loop --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - INSTALLATION CHECK AX = 1100h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed Note: In DOS 4+, the 11xx calls are all in IFSFUNC.EXE, not in the PC LAN Program redirector. --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - RMDIR??? AX = 1101h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - MKDIR??? AX = 1103h ??? Return: CF set on error AX = DOS error code (see INT 21/AH=59h) --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - ??? AX = 1105h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - CLOSE REMOTE FILE AX = 1106h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - ??? AX = 1107h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - READ FROM REMOTE FILE AX = 1108h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - WRITE TO REMOTE FILE AX = 1109h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - LOCK REGION OF FILE AX = 110Ah BX = file handle CX:DX = starting offset SI = high word of size STACK: WORD low word of size Return: CF set on error AL = DOS error code (see INT 21/AH=59h) STACK unchanged --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - UNLOCK REGION OF FILE AX = 110Bh BX = file handle CX:DX = starting offset SI = high word of size STACK: WORD low word of size Return: CF set on error AL = DOS error code (see INT 21/AH=59h) STACK unchanged --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - GET DISK SPACE AX = 110Ch ??? Return: AL = sectors per cluster BX = total clusters CX = bytes per sector DX = number of available clusters --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - SET REMOTE FILE'S ATTRIBUTES AX = 110Eh ??? STACK: WORD new file attributes Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - GET REMOTE FILE'S ATTRIBUTES AX = 110Fh ??? Return: AX = file attributes --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - RENAME REMOTE FILE AX = 1111h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - DELETE REMOTE FILE??? AX = 1113h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - OPEN EXISTING REMOTE FILE??? AX = 1116h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - CREATE REMOTE FILE??? AX = 1117h STACK: WORD ??? Return: ??? Note: one of AX=1117h and AX=1118h probably truncates an existing remote file --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - CREATE REMOTE FILE??? AX = 1118h STACK: WORD ??? Return: ??? Note: one of AX=1117h and AX=1118h probably truncates an existing remote file --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - CHDIR??? AX = 1119h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - FINDFIRST??? AX = 111Bh ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - FINDNEXT??? AX = 111Ch ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - CLOSE ALL REMOTE FILES FOR PROCESS??? AX = 111Dh DS??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - DO REDIRECTION AX = 111Eh STACK: WORD function to execute 5F02h get redirection list entry BX = redirection list index DS:SI -> 16-byte local device name buffer ES:DI -> 128-byte network name buffer 5F03h redirect device BL = device type (see INT 21/AX=5F03h) CX = stored parameter value DS:SI -> ASCIZ source device name ES:DI -> destination ASCIZ network path + ASCIZ passwd 5F04h cancel redirection DS:SI -> ASCIZ device name or network path Return: CF set on error --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - PRINTER SETUP AX = 111Fh STACK: WORD function 5E02h set printer setup 5E03h get printer setup 5E04h ??? 5E05h ??? 5E06h ??? Return: CF set on error --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - RESET DISKS AND FLUSH BUFFERS??? AX = 1120h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - SEEK ON REMOTE FILE??? AX = 1121h ??? Return: CF set on error CF clear if successful DX:AX = new file position??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - PROCESS TERMINATION HOOK??? AX = 1122h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - ??? AX = 1123h ??? Return: CF set on error??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - ??? AX = 1124h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - ??? AX = 1125h STACK: WORD ??? Return: ??? CF set on error??? --------------------------------------------- INT 2F - Multiplex - NETWORK REDIRECTOR - ??? AX = 1126h ??? Return: CF set on error??? --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - INSTALLATION CHECK AX = 1200h Return: AL = FFh (for compatibility with other INT 2F functions) --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - CLOSE CURRENT FILE??? AX = 1201h STACK: WORD ??? Return: BX??? CX??? ES:DI -> ??? Note: can be called only while on DOS internal stack --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET INTERRUPT ADDRESS AX = 1202h STACK: WORD vector number Return: ES:BX -> interrupt vector Stack unchanged --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET DOS DATA SEGMENT AX = 1203h Return: DS = segment of IBMDOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - NORMALIZE PATH SEPARATOR AX = 1204h STACK: WORD character to normalize Return: AL = normalized character (forward slash turned to backslash) Stack unchanged --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - OUTPUT CHARACTER AX = 1205h STACK: WORD character to output Return: Stack unchanged Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - INVOKE CRITICAL ERROR AX = 1206h Return: AL = 0-3 for Abort, Retry, Ignore, Fail Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - MAKE DISK BUFFER MOST-RECENTLY USED AX = 1207h DS:DI -> disk buffer Return: buffer moved to end of buffer list (least-recently used is first) Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - DECREMENT WORD AX = 1208h ES:DI -> word to decrement Return: AX = new value of word word pointed to by ES:DI decremented, skipping zero --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - FLUSH AND FREE DISK BUFFER AX = 1209h DS:DI -> disk buffer Return: disk buffer marked unused, contents written to disk if buffer dirty Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - ??? AX = 120Ah ??? Return: CF set on error??? AL = ??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - ??? AX = 120Bh ES:DI -> system file table entry??? ??? Return: CF set on error AX = error code (20h) CF clear if successful Note: can be called only from within DOS, performs AX=120Ah routine if file opened in compatibility mode with inheritance allowed --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - ??? AX = 120Ch ??? Return: ??? Note: can be called only from within DOS seems to change owner of last-accessed file to calling process --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET DATE AND TIME AX = 120Dh Return: AX = current date in packed format (see INT 21/AX=5700h) DX = current time in packed format (see INT 21/AX=5700h) Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - FREE ALL DISK BUFFERS AX = 120Eh Return: DS:DI -> first disk buffer Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - MAKE BUFFER MOST RECENTLY USED AX = 120Fh DS:DI -> disk buffer Return: DS:DI -> next buffer in buffer list Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - FIND FREE DISK BUFFER AX = 1210h DS:DI -> first disk buffer to check Return: DS:DI -> first available disk buffer ZF clear if found, set if not found --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - NORMALIZE ASCIZ FILENAME AX = 1211h DS:SI -> ASCIZ filename to normalize ES:DI -> buffer for normalized filename Return: destination buffer filled with uppercase filename, with slashes turned to backslashes --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET LENGTH OF ASCIZ STRING AX = 1212h ES:DI -> ASCIZ string Return: CX = length of string --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - UPPERCASE CHARACTER AX = 1213h STACK: WORD character to convert to uppercase Return: AL = uppercase character Stack unchanged --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - COMPARE FAR POINTERS AX = 1214h DS:SI = first pointer ES:DI = second pointer Return: ZF set if pointers are equal, ZF clear if not equal --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - FLUSH BUFFER AX = 1215h DS:DI -> disk buffer STACK: WORD drives for which to skip buffer ignore buffer if drive same as high byte, or bytes differ and the buffer is for a drive OTHER than that given in low byte Return: Stack unchanged Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET ADDRESS OF SYSTEM FCB AX = 1216h BX = system file table entry number Return: ES:DI -> system file table entry --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - SET DEFAULT DRIVE ??? AX = 1217h STACK: WORD drive (0 = A:, 1 = B:, etc) Return: CF set on error (drive > LASTDRIVE) CF clear if successful DS:SI -> drive data block for specified drive Stack unchanged Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET CALLER'S REGISTERS AX = 1218h Return: DS:SI -> saved caller's AX,BX,CX,DX,SI,DI,BP,DS,ES (on stack) Note: only valid while within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - ??? AX = 1219h STACK: WORD drive (0 = default, 1 = A:, etc) Return: ??? Stack unchanged Note: can be called only from within DOS calls function 1217h --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET FILE'S DRIVE AX = 121Ah DS:SI -> filename Return: AL = drive (0 = default, 1 = A:, etc, FFh = invalid) --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - SET YEAR/LENGTH OF FEBRUARY AX = 121Bh CL = year - 1980 Return: AL = number of days in February Note: requires DS to be set to the DOS code segment --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - CHECKSUM MEMORY AX = 121Ch DS:SI -> start of memory to checksum CX = number of bytes DX = initial checksum Return: DX = checksum Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - SUM MEMORY AX = 121Dh DS:SI -> memory to add up CX = 0000h DX = limit Return: AL = byte which exceeded limit CX = number of bytes before limit exceeded DX = remainder after adding first CX bytes --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - COMPARE FILENAMES AX = 121Eh DS:SI -> first ASCIZ filename ES:DI -> second ASCIZ filename Return: ZF set if filenames equivalent, ZF clear if not --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - BUILD DRIVE INFO BLOCK AX = 121Fh STACK: WORD drive letter Return: ES:DI -> drive info block (will be overwritten by next call) Stack unchanged Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET SYSTEM FILE TABLE NUMBER AX = 1220h BX = file handle Return: CF set on error AL = 6 (invalid file handle) CF clear if successful BYTE ES:[DI] = system file table entry number for file handle --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - ??? AX = 1221h DS:SI -> ??? Return: ??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - SET EXTENDED ERROR INFO??? AX = 1222h SS:SI -> 4-byte records BYTE error code, FFh = last record BYTE ??? FFh = don't change BYTE ??? FFh = don't change BYTE ??? FFh = don't change Return: nothing??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - CHECK IF CHARACTER DEVICE??? AX = 1223h ??? Return: DS:SI -> device driver with same name as ??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - DELAY AX = 1224h Return: after delay of ??? ms Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3+ internal - GET LENGTH OF ASCIZ STRING AX = 1225h DS:SI -> ASCIZ string Return: CX = length of string --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - ??? AX = 1226h CL = ??? Return: ??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - GET SYSTEM FILE TABLE FOR FILE??? AX = 1227h BX = file handle Return: AL = 6 invalid file handle ??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - ??? AX = 1228h BP = ??? Return: ??? Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - GET SYSTEM FILE TABLE ENTRY FOR FILE AX = 1229h BX = file handle Return: ES:DI -> system file table entry for file (see INT 21/AH=52h) Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - SET FASTOPEN ENTRY POINT AX = 122Ah BX = (DOS 4+) entry point to set (0001h or 0002h) DS:SI -> FASTOPEN entry point Return: CF set if entry point already set --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - ??? AX = 122Bh DS:SI -> ??? STACK: WORD ??? Return: ??? STACK unchanged Note: can be called only from within DOS --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - GET DEVICE CHAIN AX = 122Ch Return: BX:AX -> header of second device driver (NUL is first) in driver chain --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - ??? AX = 122Dh Return: AX = ??? (value of some flag or counter) --------------------------------------------- INT 2F - Multiplex - DOS 4.00 internal - GET ??? AX = 122Eh DL = subfunction: 00, 02, 04, 06 or 08h Return: ES:DI set to ??? --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ - SET ??? AH = 13h DS:DX -> ??? ES:BX -> ??? Return: DS:DX from previous invocation of this function ES:BX from previous invocation of this function --------------------------------------------- INT 2F - Multiplex - NLSFUNC.COM - INSTALLATION CHECK AX = 1400h Return: AL = 00h not installed, OK to install 01h not installed, not OK FFh installed --------------------------------------------- INT 2F - Multiplex - NLSFUNC.COM - ??? AX = 1401h DS:SI -> ??? BX = ??? DX = ??? Return: ??? Note: calls INT 2F/AX=1227h under certain circumstances --------------------------------------------- INT 2F - Multiplex - NLSFUNC.COM - ??? AX = 1402h BP = ??? DS:SI -> ??? Return: ??? Note: calls INT 2F/AX=1227h under certain circumstances --------------------------------------------- INT 2F - Multiplex - NLSFUNC.COM - ??? AX = 1403h DS:SI -> ??? BX = ??? DX = ??? Return: ??? Note: in DOS 3.3, appears to be identical to subfunction 01h --------------------------------------------- INT 2F - Multiplex - CDROM - INSTALLATION CHECK AX = 1500h BX = 0000h Return: BX = number of CDROM drive letters used CX = strating drive letter (0=A:) Note: this installation check DOES NOT follow the format used by other software --------------------------------------------- INT 2F - Multiplex - CDROM - GET DRIVE DEVICE LIST AX = 1501h ES:BX -> bufer to hold drive letter list (5 bytes per drive letter) Return: buffer filled, for each drive letter BYTE subunit number in driver DWORD address of device driver header --------------------------------------------- INT 2F - Multiplex - CDROM - GET COPYRIGHT FILE NAME AX = 1502h ES:BX -> 38-byte buffer for name of copyright file CX = drive number (0=A:) Return: CF set if drive is not a CDROM drive AX = 15 (invalid drive) --------------------------------------------- INT 2F - Multiplex - CDROM - GET ABSTRACT FILE NAME AX = 1503h ES:BX -> 38-byte buffer for name of abstract file CX = drive number (0=A:) Return: CF set if drive is not a CDROM drive AX = 15 (invalid drive) --------------------------------------------- INT 2F - Multiplex - CDROM - GET BIBLIOGRAPHIC DOC FILE NAME AX = 1504h ES:BX -> 38-byte buffer for name of bibliographic documentation file CX = drive number (0=A:) Return: CF set if drive is not a CDROM drive AX = 15 (invalid drive) --------------------------------------------- INT 2F - Multiplex - CDROM - READ VTOC AX = 1505h ES:BX -> 2048-byte buffer CX = drive number (0=A:) DX = sector index (0=first volume descriptor,1=second,...) Return: CF set on error AX = error code (15=invalid drive,21=not ready) CF clear if successful AX = volume descriptor type (1=standard,FFh=terminator,0=other) --------------------------------------------- INT 2F - Multiplex - CDROM - TURN DEBUGGING ON AX = 1506h BX = debugging function to enable Note: reserved for development --------------------------------------------- INT 2F - Multiplex - CDROM - TURN DEBUGGING OFF AX = 1507h BX = debugging function to disable Note: reserved for development --------------------------------------------- INT 2F - Multiplex - CDROM - ABSOLUTE DISK READ AX = 1508h ES:BX -> buffer CX = drive number (0=A:) SI:DI = starting sector number DX = number of sectors to read Return: CF set on error AL = error code (15=invalid drive,21=not ready) --------------------------------------------- INT 2F - Multiplex - CDROM - ABSOLUTE DISK WRITE AX = 1509h ES:BX -> buffer CX = drive number (0=A:) SI:DI = starting sector number DX = number of sectors to write Note: corresponds to INT 26h and is currently reserved and nonfunctional --------------------------------------------- INT 2F - Multiplex - CDROM - RESERVED AX = 150Ah --------------------------------------------- INT 2F - Multiplex - CDROM 2.00 - DRIVE CHECK AX = 150Bh CX = drive number (0=A:) Return: BX = ADADh if MSCDEX.EXE installed AX = 0000h if drive not supported nonzero if supported --------------------------------------------- INT 2F - Multiplex - CDROM 2.00 - GET MSCDEX.EXE VERSION AX = 150Ch Return: BH = major version BL = minor version Note: MSCDEX.EXE versions prior to 1.02 return BX=0 --------------------------------------------- INT 2F - Multiplex - CDROM 2.00 - GET CDROM DRIVE LETTERS AX = 150Dh ES:BX -> buffer for drive letter list (1 byte per drive) Return: buffer filled with drive numbers (0=A:). Each byte corresponds to the drive in the same position for function 1501h --------------------------------------------- INT 2F - Multiplex - CDROM 2.00 - GET/SET VOLUME DESCRIPTOR PREFERENCE AX = 150Eh BX = subfunction 00h get preference DX = 0000h Return: DX = preference settings 01h set preference DH = volume descriptor preference 01h = primary volume descriptor 02h = supplementary volume descriptor DL = supplementary volume descriptor preference 01h = shift-Kanji CX = drive number (0=A:) Return: CF set on error AX = error code (15=invalid drive,1=invalid function) --------------------------------------------- INT 2F - Multiplex - CDROM 2.00 - GET DIRECTORY ENTRY AX = 150Fh CX = drive number (0=A:) ES:BX -> ASCIZ path name SI:DI -> 255-byte buffer for directory entry Return: CF set on error AX = error code CF clear if succesful AX = disk format (0=High Sierra,1=ISO 9660) Format of directory entry: Offset Size Description 00h BYTE length of directory entry 01h BYTE length of XAR in LBN's (don't ask me what that means...) 02h DWORD LBN of data, Intel (little-endian) format 06h DWORD LBN of data, Motorola (big-endian) format 0Ah DWORD length of file, Intal format 0Eh DWORD length of file, Motorola format ---High Sierra--- 12h 6 BYTEs date and time 18h BYTE bit flags 19h BYTE reserved ---ISO 9660--- 12h 7 BYTEs date and time 19h BYTE bit flags ---both formats--- 1Ah BYTE interleave size 1Bh BYTE interleave skip factor 1Ch WORD volume set sequence number, Intel format 1Eh WORD volume set sequence number, Motorola format 20h BYTE length of file name 21h N BYTEs file name BYTE (optional) padding if filename is odd length N BYTEs system data --------------------------------------------- INT 2F - Multiplex - CDROM 2.10 - SEND DEVICE DRIVER REQUEST AX = 1510h CX = CD-ROM drive letter (0 = A, 1 = B, etc) ES:BX -> CD-ROM device driver request header (see below) Format of device driver request header: Offset Size Description 00h BYTE length of request header 01h BYTE subunit within device driver 02h BYTE command code (see below) 03h WORD status (filled in by device driver) bit 15: error bits 14-10: reserved bit 9: busy bit 8: done bits 7-0: error code if bit 15 set (see below) 05h 8 BYTEs reserved 0Dh any additional information starts here Values for command code: 00h INIT 01h MEDIA CHECK (block devices) 02h BUILD BPB (block devices) 03h IOCTL INPUT 04h INPUT 05h NONDESTRUCTIVE INPUT, NO WAIT 06h INPUT STATUS 07h INPUT FLUSH 08h OUTPUT 09h OUTPUT WITH VERIFY 0Ah OUTPUT STATUS 0Bh OUTPUT FLUSH 0Ch IOCTL OUTPUT 0Dh (DOS 3+) DEVICE OPEN 0Eh (DOS 3+) DEVICE CLOSE 0Fh (DOS 3+) REMOVABLE MEDIA (block devices) 10h (DOS 3+) OUTPUT UNTIL BUSY 11h unused??? 12h unused??? 13h (DOS 3.2+) GENERIC IOCTL 14h unused??? 15h unused??? 16h unused??? 17h (DOS 3.2+) GET LOGICAL DEVICE 18h (DOS 3.2+) SET LOGICAL DEVICE 80h (CD-ROM) READ LONG 81h (CD-ROM) reserved 82h (CD-ROM) READ LONG PREFETCH 83h (CD-ROM) SEEK 84h (CD-ROM) PLAY AUDIO 85h (CD-ROM) STOP AUDIO 86h (CD-ROM) WRITE LONG 87h (CD-ROM) WRITE LONG VERIFY 88h (CD-ROM) RESUME AUDIO Values for error code: 00h write-protect violation 01h unknown unit 02h drive not ready 03h unknown command 04h CRC error 05h bad drive request structure length 06h seek error 07h unknown media 08h sector not found 09h printer out of paper 0Ah write fault 0Bh read fault 0Ch general failure 0Dh reserved 0Eh reserved 0Fh invalid disk change --------------------------------------------- INT 2F - Multiplex - DOS 4.0 SHELLB.COM - INSTALLATION CHECK AX = 1900h Return: AL = 00h not installed FFh installed --------------------------------------------- INT 2F - Multiplex - DOS 4.0 SHELLB.COM - SHELLC.EXE INTERFACE AX = 1901h BL = 00h if SHELLC transient 01h if SHELLC resident DS:DX -> far call entry point for resident SHELLC.EXE Return: ES:DI -> SHELLC.EXE workspace within SHELLB.COM Note: SHELLB.COM and SHELLC.EXE are parts of the DOS 4.x shell --------------------------------------------- INT 2F - Multiplex - DOS 4.0 SHELLB.COM - COMMAND.COM INTERFACE AX = 1902h ES:DI -> ASCIZ full filename of current batch file, with at least the final filename element uppercased DS:DX -> buffer for results Return: AL = 00h failed, either (a) final filename element quoted at ES:DI does not match identity of shell batch file quoted as parameter of most recent call of SHELLB command, or (b) no more Program Start Commands available. AL= FFh success, then: memory at DS:[DX+1] onwards filled as: DX+1: BYTE count of bytes of PSC DX+2: N BYTEs Program Start Command text BYTE 0Dh terminator Explanation: COMMAND.COM executes the result of this call in preference to reading a command from a batch file. Thus the batch file does not advance in execution for so long as SHELLB provides PSCs from its workspace. The PSCs are planted in SHELLB workspace by SHELLC, the user menu interface. The final PSC of a sequence is finished with a GOTO COMMON, which causes a loop back in the batch file which called SHELLC so as to execute SHELLC again. The check on batch file name permits PSCs to CALL nested batch files while PSCs are still stacked up for subsequent execution. --------------------------------------------- INT 2F - Multiplex - DOS 4.0 SHELLB.COM - COMMAND.COM interface AX = 1903h ES:DI -> ASCIZ batch file name as for AX=1902h Return: AL = FFh if quoted batch file name matches last SHELLB parameter AL = 00h if it does not --------------------------------------------- INT 2F - Multiplex - DOS 4.0 SHELLB.COM - SHELLB.COM transient to TSR interface AX = 1904h Return: ES:DI -> name of current shell batch file: WORD number of bytes of name following BYTEs (8 max) uppercase name of shell batch file --------------------------------------------- INT 2F - Multiplex - DOS 4+ ANSI.SYS internal - INSTALLATION CHECK AX = 1A00h Return: AL = FFh if installed --------------------------------------------- INT 2F - Multiplex - DOS 4+ ANSI.SYS internal - GET/SET DISPLAY INFORMATION AX = 1A01h CL = 7Fh for GET = 5Fh for SET DS:DX -> parm block as for INT 21, AX=440C, CX=037F/035F respectively Return: CF set on error AX = error code (many non-standard) CF clear if successful AX destroyed Note: Presumably this is the DOS IOCTL interface to ANSI.SYS --------------------------------------------- INT 2F - Multiplex - DOS 4+ ANSI.SYS internal - MISC REQUESTS AX = 1A02h DS:DX -> parameter block BYTE subfunction 00h set/reset interlock DS:[DX+1] BYTE 00h=reset, 01h=set This interlock prevents some of the ANSI.SYS post- processing in its hook onto INT 10, AH=00h mode set 01h get /L flag Result: DS:[DX+2] BYTE = 00h if /L not in effect = 01h if /L in effect --------------------------------------------- INT 2F - Multiplex - DOS 4+ XMA2EMS.SYS extension internal - INSTALLATION CHECK AX = 1B00h Return: AL = FFh if installed Note: XMA2EMS.SYS extension is only installed if DOS has page frames to hide. This extension hooks onto INT 67 AH=58h and returns from that call data which excludes the physical pages being used by DOS. --------------------------------------------- INT 2F - Multiplex - DOS 4+ XMA2EMS.SYS extens internal - GET HIDDEN FRAME INFO AX = 1B01h DI = hidden physical page number Return: AX = FFFFh if failed (no such hidden page) AX = 0000h if OK, then ES = segment of page frame DI = physical page number Note: This corresponds to the data edited out of the INT 67 AH=58h call --------------------------------------------- INT 2F - Multiplex - XMS - INSTALLATION CHECK AX = 4300h Return: AL = 80h XMS driver installed AL <> 80h no driver Note: XMS gives access to extended memory and noncontiguous/nonEMS memory above 640K --------------------------------------------- INT 2F - Multiplex - XMS - GET DRIVER ADDRESS AX = 4310h Return: ES:BX -> driver entry point Perform a FAR call to the driver entry point with AH set to the function code AH function 00h Get XMS version number Return: AX = XMS version (in BCD) BX = internal revision number DX = 0001h if HMA (1M to 1M + 64K) exists 0000h if HMA does not exist 01h Request High Memory Area (1M to 1M + 64K) DX = memory in bytes (for TSR or device drivers) FFFFh if application program Return: AX = 0001h success = 0000h failure BL = error code (see below) 02h Release High Memory Area Return: AX = 0001h success = 0000h failure BL = error code (see below) 03h Global enable A20, for using the HMA Return: AX = 0001h success = 0000h failure BL = error code (see below) 04h Global disable A20 Return: AX = 0001h success = 0000h failure BL = error code (see below) 05h Local enable A20, for direct access to extended memory Return: AX = 0001h success = 0000h failure BL = error code (see below) 06h Local disable A20 Return: AX = 0001h success = 0000h failure BL = error code (see below) 07h Query A20 state Return: AX = 0001h enabled = 0000h disabled BL = error code (0 = successful) 08h Query free extended memory, not counting HMA Return: AX = size of largest extended memory block in K DX = total extended memory in K BL = error code (see below) 09h Allocate extended memory block DX = Kbytes needed Return: AX = 0001h success DX = handle for memory block = 0000h failure BL = error code (see below) 0Ah Free extended memory block DX = handle of block to free Return: AX = 0001h success = 0000h failure BL = error code (see below) 0Bh Move extended memory block DS:SI -> EMM structure (see below) Note: if either handle is 0000h, the corresponding offset is considered to be an absolute segment:offset address in directly addressable memory Return: AX = 0001h success = 0000h failure BL = error code (see below) 0Ch Lock extended memory block DX = handle of block to lock Return: AX = 0001h success DX:BX = 32-bit linear address of locked block = 0000h failure BL = error code (see below) 0Dh Unlock extended memory block DX = handle of block to unlock Return: AX = 0001h success = 0000h failure BL = error code (see below) 0Eh Get handle information DX = handle for which to get info Return: AX = 0001h success BH = block's lock count BL = number of free handles left DX = block size in K = 0000h failure BL = error code (see below) 0Fh Reallocate extended memory block DX = handle of block BX = new size of block in K Return: AX = 0001h success = 0000h failure BL = error code (see below) 10h Request upper memory block (nonEMS memory above 640K) DX = size of block in paragraphs Return: AX = 0001h success BX = segment address of UMB DX = actual size of block = 0000h failure BL = error code (see below) DX = largest available block 11h Release upper memory block DX = segment address of UMB to release Return: AX = 0001h success = 0000h failure BL = error code (see below) Note: HIMEM.SYS requires at least 256 bytes free stack space Format of EMM structure: Offset Size Description 00h DWORD number of bytes to move (must be even) 04h WORD source handle 06h DWORD offset into source block 0Ah WORD destination handle 0Ch DWORD offset into destination block Error codes returned in BL: 80h Function not implemented 81h Vdisk was detected 82h An A20 error occurred 8Eh a general driver error 8Fh unrecoverable driver error 90h HMA does not exist 91h HMA is already in use 92h DX is less than the /HMAMIN= parameter 93h HMA is not allocated 94h A20 line still enabled A0h all extended memory is allocated A1h all available extended memory handles are allocated A2h Invalid handle A3h Source handle is invalid A4h Source offset is invalid A5h Destination handle is invalid A6h Destination offset is invalid A7h Length is invalid A8h Move has an invalid overlap A9h Parity error occurred AAh Block is not locked ABh Block is locked ACh Block lock count overflowed ADh Lock failed B0h Only a smaller UMB is available B1h No UMB's are available B2h UMB segment number is invalid --------------------------------------------- INT 2F - Multiplex - TesSeRact RAM-RESIDENT PROGRAM INTERFACE AX = 5453h BX = subfunction 00h installation check DS:SI -> 8-char blank-padded name Return: AX = FFFFh installed CX = ID number of already-installed copy = anything else, not installed CX = ID number for TSR when installed 01h get user parameters CX = TSR ID number Return: AX = 0000h successful ES:BX -> user parameter block (see below) = nonzero failed 02h check if hotkey in use CL = scan code of hot key Return: AX = FFFFh hot key conflicts with another TSR otherwise safe to use the hotkey 03h replace default critical error handler CX = TSR ID number DS:SI -> new routine for INT 24h Return: AX = nonzero, unable to install new handler 04h get internal data area CX = TSR ID number Return: AX = 0000h ES:BX -> TSR's internal data area (see below) = nonzero, TSR not found 05h set multiple hot keys CX = TSR ID number DL = number of additional hot keys to allocate DS:SI -> table of hot keys BYTE hotkey scan code BYTE hotkey shift state BYTE flag value to pass to TSR (nonzero) Return: AX = nonzero, unable to install hot keys 06h - 0Fh reserved 10h enable TSR CX = TSR ID number Return: AX = nonzero, unable to enable 11h disable TSR CX = TSR ID number Return: AX = nonzero, unable to disable 12h unload TSR CX = TSR ID number Return: AX = nonzero, invalid TSR number Note: if any interrupts used by TSR have been grabbed by another TSR, the TesSeRact routines will wait until it is safe to remove the indicated TSR from memory 13h restart TSR CX = TSR ID number of TSR which was unloaded but is still in memory Return: AX = nonzero, unable to restart TSR 14h get status word CX = TSR ID number Return: AX = FFFFh invalid ID number = other, successful BX = bit flags 15h set status word CX = TSR ID number DX = new bit flags Return: AX = nonzero, unable to set status word 16h get INDOS state at popup CX = TSR ID number Return: AX = 0000h successful BX = value of INDOS flag 17h - 1Fh reserved 20h call user procedure CX = TSR ID number ES:DI -> user-defined data Return: AX = 0000h successful 21h stuff keystrokes into keyboard buffer CX = TSR ID number DL = speed 00h stuff keystrokes only when buffer is empty 01h stuff up to four keystrokes per clock tick 02h stuff up to 15 keystrokes per clock tick DH = scan code flag if zeor, buffer contains alternating ASCII and scan codes if nonzero, buffer contains only ASCII codes SI = number of keystrokes ES:DI -> buffer to stuff Return: AX = 0000h success F0F0h user aborted with ^C or ^Break other unable to stuff keystrokes 22h (v1.10) trigger popup CX = TSR ID number Return: AX = 0000h success, TSR will either pop up or beep to indicate that it is unable to pop up nonzero invalid ID number 23h (v1.10) invoke TSR's background function CX = TSR ID number Return: AX = 0000h success FFFFh not safe to call background function nonzero invalid ID number 24h - 2Fh reserved Note: Borland's THELP.COM popup help system for Turbo Pascal and Turbo C fully supports the TesSeRact API, as do the SWAP?? programs by Innovative Data Concepts. Format of User Parameter Block: Offset Size Description 00h 8 BYTEs blank-padded TSR name 08h WORD TSR ID number 0Ah DWORD bitmap of supported functions 0Eh BYTE scan code of primary hotkey 00h = pop up when shift states match FFh = no popup (if shift state also FFh) 0Fh BYTE shift state of primary hotkey FFh = no popup (if scan code also FFh) 10h BYTE number of secondary hotkeys 11h DWORD pointer to extra hotkeys set by func 05h 15h WORD current TSR status flags 17h WORD PSP segment of TSR 19h DWORD DTA for TSR 1Dh WORD default DS for TSR 1Fh DWORD stack at popup 23h DWORD stack at background invocation Format of TSR internal data area: Offset Size Description 00h BYTE revision level of TesSeRact library 01h BYTE type of popup in effect 02h BYTE INT 08 occurred since last invocation 03h BYTE INT 13 occurred since last invocation 04h BYTE active interrupts 05h BYTE active soft interrupts 06h BYTE DOS major version 07h BYTE how long to wait before popping up 08h DWORD pointer to INDOS flag 0CH DWORD pointer to DOS critical error flag 10h WORD PSP segment of interrupted program 12h WORD PSP segment of prog interrupted by INT 28 14h DWORD DTA of interrupted program 18h DWORD DTA of program interrupted by INT 28 1Ch WORD SS of interrupted program 1Eh WORD SP of interrupted program 20h WORD SS of program interrupted by INT 28 22h WORD SP of program interrupted by INT 28 24h DWORD INT 24 of interrupted program 28h 3 WORDs DOS 3+ extended error info 2Eh BYTE old BREAK setting 2Fh BYTE old VERIFY setting 30h BYTE were running MS WORD 4.0 before popup 31h BYTE MS WORD 4.0 special popup flag 32h BYTE enhanced keyboard call in use 33h BYTE delay for MS WORD 4.0 11 times: DWORD old interrupt vector BYTE interrupt number DWORD new interrupt vector --------------------------------------------- INT 2F - Multiplex - SCRNSAV2.COM - INSTALLATION CHECK AX = 6400h Return: AL = 00h not installed FFh installed Note: SCRNSAV2.COM is a screen saver for PS/2's with VGA by Alan Ballard --------------------------------------------- INT 2F - Multiplex - Novell NetWare - INSTALLATION CHECK AX = 7A00h Return: AL = 00h not installed = FFh installed ES:DI -> FAR entry point for routines otherwise accessed through INT 21h --------------------------------------------- INT 2F - Multiplex - EASY-NET - INSTALLATION CHECK AX = 8000h Return: AL = 00h not installed FFh installed Note: EASY-NET is a shareware two-machine serial-port network --------------------------------------------- INT 2F - Multiplex - WHOA!.COM - INSTALLATION CHECK AX = 8900h Return: AL = 00h not installed = FFh installed Note: WHOA!.COM is a system slow-down utility by Brad D Crandall --------------------------------------------- INT 2F - Multiplex - WHOA!.COM - UNINSTALL AX = 8901h Return: AL = FDh successful = FEh error Note: WHOA!.COM is a system slow-down utility by Brad D Crandall --------------------------------------------- INT 2F - Multiplex - WHOA!.COM - SET DELAY COUNT AX = 8902h BX = delay count (larger values slow system down more) Return: AL = FDh successful = FEh error Note: WHOA!.COM is a system slow-down utility by Brad D Crandall --------------------------------------------- INT 2F - Multiplex - VIDCLOCK.COM - INSTALLATION CHECK AX = AA00h Return: AL = 00h not installed FFh installed Note: VIDCLOCK.COM is a memory-resident clock by Thomas G. Hanlin III --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ DISPLAY.SYS internal - INSTALLATION CHECK AX = AD00h Return: AL = FFh if installed --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ DISPLAY.SYS internal - ??? AX = AD01h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ DISPLAY.SYS internal - ??? AX = AD02h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DISPLAY.SYS DOS 3.3+ internal - ??? AX = AD03h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DOS 4+ DISPLAY.SYS internal - ??? AX = AD10h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ KEYB.COM internal - INSTALLATION CHECK AX = AD80h Return: AL = FFh if installed ES:DI -> internal data --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ KEYB.COM internal - ??? AX = AD81h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ KEYB.COM internal - ??? AX = AD82h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - INSTALLABLE COMMAND - INSTALL CHECK AX = AE00h DX = FFFFh ??? DS:BX -> command line: Return: AL = FFh if this command is a TSR extension to COMMAND.COM AL = 00h if the command should be executed as usual Note: This apparently provides a mechanism for TSRs to install permanent extensions to the command repertoire of COMMAND.COM. It appears that COMMAND.COM makes this call before executing the current command line, and does not execute it itself if the return is FFh. Format of command line: Offset Size Description 00h BYTE ??? (max length of command line, as in INT 21/AH=0Ah ???) 01h BYTE count of bytes to follow N BYTEs command line text, terminated by 0Dh --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ internal - INSTALLABLE COMMAND - EXECUTE AX = AE01h DX = FFFFh ??? DS:SI -> a word to be written to Return: the word at DS:SI is set to ??? Note: this call requests execution of the command which a previous call to AX=AE00h indicated was resident --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ GRAFTABL.COM - INSTALLATION CHECK AX = B000h Return: AL = 00h not installed, OK to install = 01h not installed, not OK to install = FFh installed --------------------------------------------- INT 2F - Multiplex - DOS 3.3+ GRAFTABL.COM - GET ??? AX = B001h DS:DX -> 4-byte buffer Return: buffer filled Note: in DOS 3.30, the buffer was filled with 0130h, 4C3Eh --------------------------------------------- INT 2F - Multiplex - APPEND - INSTALLATION CHECK AX = B700h Return: AL = 00h not installed FFh if installed --------------------------------------------- INT 2F - Multiplex - APPEND - ??? AX = B701h ??? --------------------------------------------- INT 2F - Multiplex - APPEND - VERSION CHECK AX = B702h Return: AX = FFFFh if DOS 4.0 APPEND AL = major version number AH = minor version number, otherwise --------------------------------------------- INT 2F - Multiplex - DOS 4.0 APPEND - GET APPEND PATH AX = B704h Return: ES:DI -> active APPEND path (128 bytes max) --------------------------------------------- INT 2F - Multiplex - DOS 4.0 APPEND - GET APPEND FUNCTION STATE AX = B706h Return: BX = APPEND state bit 0: set if APPEND enabled bits 1-12 reserved bit 13: set if /PATH flag active bit 14: set if /E flag active (environment var APPEND exists) bit 15: set if /X flag active --------------------------------------------- INT 2F - Multiplex - DOS 4.0 APPEND - SET APPEND FUNCTION STATE AX = B707h BX = APPEND state bits (see AX=B706h) --------------------------------------------- INT 2F - Multiplex - DOS 4.0 APPEND - SET RETURN FOUND NAME STATE AX = B711h Note: if the next INT 21h call (and ONLY the next) is function 3Dh, 43h, or 6Ch, the fully qualified filename is written over top of the filename passed to the INT 21h call. The application must provide a sufficiently large buffer. This state is reset after next INT 21h call processed by APPEND. --------------------------------------------- INT 2F - Multiplex - Network - INSTALLATION CHECK AX = B800h Return: AH = 00h not installed nonzero installed BX = installed component flags (test in this order!) bit 6 server bit 2 messenger bit 7 receiver bit 3 redirector --------------------------------------------- INT 2F - Multiplex - Network - GET CURRENT POST ADDRESS AX = B803h Return: ES:BX = post address --------------------------------------------- INT 2F - Multiplex - Network - SET NEW POST ADDRESS AX = B804h ES:BX = new post address --------------------------------------------- INT 2F - Multiplex - Network - ??? AX = B808h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - Network - VERSION CHECK AX = B809h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIRIFS.EXE internal - INSTALLATION CHECK AX = BF00h Return: AL = FFh if installed --------------------------------------------- INT 2F - Multiplex - PC LAN PROGRAM REDIRIFS.EXE internal - ??? AX = BF01h ??? Return: ??? --------------------------------------------- INT 2F - Multiplex - PC LAN PROG REDIR.SYS internal - SET REDIRIFS ENTRY POINT AX = BF80h ES:DI -> FAR entry point to IFS handler in REDIRIFS Return: AL = FFh if installed ES:DI -> internal workspace Note: all future IFS calls to REDIR.SYS are passed to the ES:DI entry point --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - INSTALLATION CHECK AX = CB00h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed Note: AH = CBh is the default identifier, but may be reconfigured --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - SUBMIT A TASK AX = CB01h DS:DX -> ASCIZ name of task control file Return: AX >= 0: event handle < 0: error code Notes: files needed for an event must be kept until task is complete or error Error codes (AH = class, AL = subcode, value passed back is 2's complement): Class 00h --- FAX warnings Subcode 00h no error 02h bad scanline count 03h page sent with errors, could not retransmit 04h received data lost 05h invalid or missing logo file 06h filename does not match nonstandard format (NSF) header 07h file size does not match NSF header Class 01h --- DOS warnings (data was sent) Subcode 01h invalid function 05h access denied 06h invalid handle others see INT 21/AH=59h Class 02h --- fatal errors (data not sent) Subcode 00h multiplex handler failed 01h unknown command 02h bad event handle 03h FIND NEXT attempted before FIND FIRST 04h no more events 07h invalid queue type 08h bad control file 09h communication board busy 0Ah invalid command parameter 0Bh can't uninstall resident code 0Ch file exists 80h unknown task type 81h bad phone number 82h bad .PCX file header 83h unexpected EOF 84h unexpected disconnect 85h too many dialing retries 86h no file specified for send 87h communication board timeout 88h received too many pages (>1023) of data 89h manual connect initiated too long ago 8Ah hardware command set error 8Bh bad NonStandard Format (NSF) header file Class 03h --- fatal DOS errors Subcode 02h file not found 03h path not found others see INT 21/AH=59h Class 04h --- FAX errors Subcode 03h other FAX machine incompatible 5Eh other FAX machine jammed --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - ABORT CURRENT EVENT AX = CB02h Return: AX >= 0: event handle of aborted event (>= 0) < 0: error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - FIND FIRST QUEUE ENTRY AX = CB05h CX = status of events to find 0000h successful completion 0001h waiting to be processed 0002h number has been dialed 0003h connection established, sending 0004h connection established, receiving 0005h even aborted FFFFh find any event, regardless of status other negative values, match error code DH = direction 00h chronological order, earliest to latest 01h reverse chronological order, latest to earliest DL = queue to search 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful BX = event handle for found event < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - FIND NEXT QUEUE ENTRY AX = CB06h DL = queue to search 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful BX = event handle for found event < 0 error code (see AX=CB01h) Note: direction of search is same as preceding FIND FIRST call --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - OPEN FILE AX = CB07h BX = event handle CX = receive file number (ignored for task queue and log queue) 0000h open receive control file N open Nth received data file DL = queue 00h task queue 01h receive queue control file or received file, as given by CX 02h log queue Return: AX = 0000h successful BX = DOS file handle for requested file < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - DELETE FILE AX = CB08h BX = event handle CX = receive file number 0000h delete ALL received files and receive control file N delete Nth received file DL = queue 00h delete control file in task queue 01h delete file in receive queue, as given by CX 02h delete control file in log queue (individual deletions not recommended, to maintain integrity of log) Return: AX = 0000h successful < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - DELETE ALL FILES IN Q AX = CB09h DL = queue 00h delete all control files in task queue 01h delete all files in receive queue 02h delete all control files in log queue Return: AX = 0000h successful < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET EVENT DATE AX = CB0Ah BX = event handle DL = queue 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful CX = year DH = month DL = day < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - SET TASK DATE AX = CB0Bh BX = event handle (task event only) CX = year DH = month DL = day Return: AX = 0000h successful < 0 error code (see AX=CB01h) Note: setting a task's date and time to before the current date and time causes it to execute immediately --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET EVENT TIME AX = CB0Ch BX = event handle DL = queue 00h task queue 01h receive queue 02h log queue Return: AX = 0000h successful CH = hour CL = minute DH = second DL = 00h < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - SET TASK TIME AX = CB0Dh BX = event handle (task events only) CH = hour CL = minute DH = second DL unused Return: AX = 0000h successful < 0 error code (see AX=CB01h) Note: setting a task's date and time to before the current date and time causes it to execute immediately --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET EXTERNAL DATA BLOCK AX = CB0Eh DS:DX -> 256-byte buffer Return: AX = 0000h successful buffer filled < 0 error code (see AX=CB01h) Format of external data block: Offset Size Description 00h BYTE CAS major version 01h BYTE CAS minor version 02h 68 BYTEs ASCIZ path to directory containing CAS software, ends in slash 46h 13 BYTEs ASCIZ name of current phonebook (in CAS directory) 53h 13 BYTEs ASCIZ name of current logo file (in CAS directory) 60h 32 BYTEs ASCIZ default sender name 80h 21 BYTEs ASCIZ CCITT identification of fax device 95h 107 BYTEs reserved --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET/SET AUTORECEIVE AX = CB0Fh DL = subfunction 00h get current autoreceive state 01h set autoreceive state DH = number of rings before answer, 00h = never Return: AX = 0000h autoreceive disabled = N number of rings before answer < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET EVENT STATUS AX = CB10h DS:DX -> 511-byte buffer Return: AX = 0000h successful BX = event handle of current event buffer filled < 0 error code (see AX=CB01h) Format of status area: Offset Size Description 00h BYTE event type 00h send 01h receive 02h polled send 03h polled receive 04h to 7Fh reserved FFh serious hardware error 01h BYTE transfer type 00h 200x200 dpi, FAX mode 01h 100x200 dpi, FAX mode 02h file transfer mode 03h to 7Fh reserved 02h WORD event status 0000h completed successfully 0001h waiting 0002h number dialed 0003h connected, sending 0004h connected, receiving 0005h aborted 0006h to 007Fh reserved 0080h to 7FFFh application-specific events 8000h to FFFFh error codes 04h WORD event time (packed DOS time format, see INT 21/AX=5700h) 06h WORD event date (packed DOS date format, see INT 21/AX=5700h) 08h WORD number of files to transfer, max 7FFFh 0Ah WORD offset of file transfer record 0Ch 47 BYTEs ASCIZ phone number to call 3Bh 64 BYTEs ASCIZ application-specific tag string 7Bh BYTE reserved (00h) 7Ch BYTE connect time, seconds 7Dh BYTE connect time, minutes 7Eh BYTE connect time, hours 7Fh DWORD total number of pages in all files 83h DWORD pages already transmitted 87h WORD number of files already transmitted 89h BYTE cover page flag 00h don't transmit cover page 01h transmit cover page 02h to 7Fh reserved 8Ah WORD total number of transmission errors 8Ch 78 BYTEs reserved (zeros) DAh 21 BYTEs ASCIZ remote FAX's CCITT identification EFH 32 BYTEs ASCIZ destination name 10Fh 32 BYTEs ASCIZ sender name 12Fh 80 BYTEs filename of PCX logo file (max 1780x800 pixels) 17Fh 128 BYTEs file transfer record for current event (see below) Format of file transfer record: Offset Size Description 00h BYTE file type (ignored unless FAX) 00h ASCII 01h PCX 02h DCX 03h to 7Fh reserved 01h BYTE text size for ASCII FAX file 00h = 80 columns by 66 lines (11 inches) 01h = 132 columns by 88 lines (11 inches) 02h to 7Fh reserved 02h BYTE status of file 00h untouched 01h opened 02h moved 03h deleted 04h not yet received 05h to 7Fh reserved 03h DWORD bytes already transmitted 07h DWORD file size in bytes 0Bh WORD pages alread transmitted 0Dh WORD number of pages in file 0Fh 80 BYTEs ASCIZ filename 5Fh BYTE 1/8 inch page length if page length below set to 01h through 7Fh, this value specifies additional 1/8 inch increments to page length 60h BYTE page length 00h = 11 inches 01h to 7Fh = page length is this number of inches plus value of 1/8 inch field above 80h to FEh reserved FFh = ASCII pages ending with formfeed 61h 31 BYTEs reserved (zeros) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET QUEUE STATUS AX = CB11h DL = queue to get status of 00h task queue 01h receive queue 02h log queue Return: AX >= 0 total number of changes made to queue, modulo 32768 BX = number of control files currently in queue CX = number of received files (zero for task and log queues) < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET HARDWARE STATUS AX = CB12h DS:DX -> 128-byte status buffer Return: AX = 0000h successful buffer filled with hardware-dependent status information < 0 error code (see AX=CB01h) Format of status buffer for Intel Connection CoProcessor: Offset Size Description 00h BYTE bit flags bit 7: hardware busy sending or receiving bit 6: last page of data bit 5: no data on current page bit 4: retransmit request for current page being transmitted bit 3: NSF mode active bits 2-0: reserved 01h BYTE number of kilobytes of free buffer space 02h BYTE page buffer status bit 7: Connection CoProcessor has documents to send bits 6-0: number of pages in buffer 03h BYTE number of retries left for dialing number 04h BYTE page number to retransmit 05h BYTE communications status bit 7: originating call bit 6: FAX message to be sent bit 5: on line bit 4: ring detected and receive enabled bit 3: buffer dumped on receive bits 2-0: hardware sequence state 000 idle 001 dial 010 answer 011 transmit 100 receive 101 pre-message 110 post-message 111 disconnect 06h BYTE baud rate bit 7: reserved bits 6-4: baud rate 000 = 300 baud (SDLC mode) 100 = 2400 baud 101 = 4800 baud 110 = 7200 baud 111 = 9600 baud bits 3-0: reserved, should be 0110 07h 3 BYTEs reserved 0Ah BYTE hardware status bit 7: modem option installed bit 6: Connection CoProcessor has control of DAA (not latched) bit 5: on line (not latched) bit 4: ring detected (not latched) bit 3: data in command buffer (not latched) bit 2: set if using DMA channel 1, clear if using DMA channel 3 bit 1: line length compensation bit 1 set (not latched) bit 0: line length compensation bit 0 set (not latched) 0Bh BYTE switch states bit 7: reserved bit 6: unused bit 5: spare switch open bit 4: FAX ADR1 switch open bit 3: FAX ADR0 switch open bit 2: alternate interrupt switch open bit 1: COM SEL 1 switch open bit 0: COM SEL 0 switch open 0Ch BYTE bit flags bit 7: reserved bit 6: auxiliary relay forced ON bit 5: modem select relay forced ON bit 4: offhook relay forced ON bit 3: 9600 bps enabled bit 2: 7200 bps enabled bit 1: 4800 bps enabled bit 0: 2400 bps enabled 0Dh BYTE reserved 0Eh WORD error count 10h DWORD size of nonstandard format (NSF) file in bytes 14h 10 BYTEs reserved 1Eh 21 BYTEs ASCIZ CCITT identification 33h 77 BYTEs reserved --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - GET DIAGNOSTICS RESULTS AX = CB13h DL = 00h Return: AX = 0040h in progress > 0 passed < 0 failure code Note: diagnostics return values are hardware dependent Intel Connection CoProcessor failure codes: bit 3: 9600 bps FAX modem module failed bit 2: SDLC chip failed bit 1: RAM failed bit 0: ROM checksum failed --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - START DIAGNOSTICS AX = CB13h DL = 01h Return: AX = 0000h successfully started < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - MOVE RECEIVED FILE AX = CB14h BX = event handle CX = receive file number 0001h first received file N Nth received file DS:DX -> ASCIZ string specifying new name for file Return: AX = 0000h successful < 0 error code (see AX=CB01h) --------------------------------------------- INT 2F - Multiplex - Communicating Applications Spec - SUBMIT FILE TO SEND AX = CB15h DS:DX -> variable-length data area Return: AX >= 0 event handle < 0 error code (see AX=CB01h) Format of data area: Offset Size Description 00h BYTE transfer type 00h = 200x200 dpi, fax mode 01h = 100x200 dpi, fax mode 02h = file transfer mode 03h to 7Fh reserved 01h BYTE text size 00h = 80 columns 01h = 132 columns 02h to 7Fh reserved 02h WORD time to send (DOS packed time format, see INT 21/AX=5700h) 04h WORD date to send (DOS packed date format, see INT 21/AX=5700h) 06h 32 BYTEs ASCIZ destination name 26h 80 BYTEs ASCIZ name of file to send 76h 47 BYTEs ASCIZ phone number to dial A5h 64 BYTEs ASCIZ application-specific tag string E5h BYTE reserved (00h) E6h BYTE cover page 00h don't send cover page 01h send cover page 02h to 7Fh reserved E7h 23 BYTEs reserved (zeros) FEh variable ASCIZ string containing text of cover page (if cover page flag set to 01h) --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - INSTALLATION CHECK AX = CD00h Return: AL = 00h not installed, OK to install 01h not installed, not OK to install FFh installed --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - INSTALLATION CHECK AX = CD00h Return: AX = 00FFh installed BH = major version BL = minor version Note: SWELL.EXE is a TSR which swaps programs to disk when they EXEC a child process with INT 21/AH=4Bh --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - SET DEVICE NAME AX = CD01h CX:BX -> ASCIZ character device name ("LPTn", "COMn", "PRN") Return: AL = 00h successful CX:BX -> internal character device name = 80h error --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - SUSPEND ONCE AX = CD01h Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - GET VERSION NUMBER AX = CD02h Return: AL = 00h/01h successful BH = major version number (BCD) BL = minor version number (BCD) = 80h error Note: if return AL = 01h, the IPI supports network redirection --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - SUSPEND AX = CD02h Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - SELECT SCAN LINE AX = CD03h BX = scan line CX = requested density in dots per inch (300, 600, or 1200) Return: AL = 00h succesful CX = density at which scan line was mapped ES:DI -> start of scan line AL = 80h unsuccessful = 81h scan line out of range = 82h unsupported scan line density = 83h out of memory --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - ACTIVATE AX = CD03h Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - MOVE BITMAP TO SCANLINE AX = CD04h CX:BX -> structure (see below) Return: AL = 00h successful = 80h unsuccessful = 81h scan line out of range = 82h unsupported scan line density = 83h out of memory = 84h unrecognized source = 85h initialization error Format of structure: Offset Size Description 00h WORD image source (0 = conventional memory, 1 = expanded memory) 02h DWORD pointer to image data 06h WORD scan line on which to place 08h WORD bit offset from start of scan line at which to place 0Ah WORD density of bitmap data (300, 600, or 1200 dpi) 0Ch WORD width in bits of data 0Eh WORD source logical page number 10h WORD source handle (only if source in expanded memory) 12h WORD source offset (only if source in expanded memory) --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - TURN OFF VERBOSE MODE AX = CD04h Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - PRINT PAGE AX = CD05h Return: AL = 00h successful = 80h unsuccessful Note: page image is retained, so multiple calls will print multiple copies of the page --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - TURN ON VERBOSE MODE AX = CD05h Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - CLEAR PAGE AX = CD06h Return: AL = 00h successful = 80h unsuccessful Note: palette is reset to default --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - UNINSTALL AX = CD06h Return: AX = 0000h uninstalled = 8002h programs still swapped, not uninstalled --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - reserved AX = CD07h --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - GET INFO AX = CD07h ES:BX -> 32-byte buffer for info Return: AX = 0000h successful ES:BX buffer filled = 8001h buffer wrong size Format of info buffer: Offset Size Description 00h WORD 20h (total size of buffer) 02h BYTE suspend-once mode active if nonzero 03h BYTE 00h active, 01h suspended 04h BYTE 00h quiet, 01h verbose 05h BYTE "Borland support" (allowing INT 21/AX=4B01h) on if nonzero 06h 26 BYTEs unused??? --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - SCREEN IMAGE AX = CD08h CX:BX -> structure (see below) Return: AL = 00h successful = 80h unsuccessful = 81h scan line out of range = 82h unsupported scan line density = 83h out of memory = 84h unrecognized source = 85h initialization error Format of structure: Offset Size Description 00h WORD image source (0 = conventional memory, 1 = expanded memory) 02h DWORD pointer to image data 06h WORD horizontal position on paper of left edge (in 1200 dpi units) 08h WORD vertical position on paper of top edge (in 1200 dpi units) 0Ah WORD left cropping (currently must be zero) 0Ch WORD top cropping (currently must be zero) 0Eh WORD width (currently must be 8000h) 10h WORD height (currently must be 8000h) 12h WORD horizontal size of image in 1200 dpi units 14h WORD vertical size of image in 1200 dpi units 16h WORD aspect ratio (currently reserved) 18h WORD initialization flag (if 01h, initialization is performed) 1Ah WORD pixels per line of source data 1Ch WORD number of scan lines in source data 1Eh WORD number of scan lines in packet 20h WORD bits per pixel (1,2,4,6, or 8) 22h WORD pixels per byte (1,2,4, or 8) 24h WORD compression type (currently only 00h [uncompressed] supported) 26h WORD source page number (if in expanded memory) 28h WORD source handle (if in expanded memory) 2Ah WORD source offset (if in expanded memory) --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - UNUSED AX = CD08h Return: AX = FFFFh (error) --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - LOAD SCREEN AX = CD09h CX:BX -> structure (see below) Return: AL = 00h successful = 80h unsuccessful Format of structure: Offset Size Description 00h BYTE style 44h ('D') diamond style 4Ch ('L') line style 01h BYTE reserved (00h) 02h WORD frequency in lines per inch [sic] currently, coerced to nearest of 50, 60, 68, 70, 75, 85, or 100 04h WORD screen angle in degrees (-360 to 360) currently coerced to nearest of -45, 0, 45, or 90 --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - TURN OFF "BORLAND SUPPORT" AX = CD09h Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - Intel Image Processing Interface - LOAD PALETTE AX = CD0Ah CX:BX -> palette structure (see below) Return: AL = 00h successful = 80h unsuccessful Format of palette structure: Offset Size Description 00h BYTE bits per pixel for which palette is to be used (1,2,4,6, or 8) 01h 2**N palette translation values, one per possible pixel value --------------------------------------------- INT 2F - Multiplex - SWELL.EXE - TURBO ON "BORLAND SUPPORT" AX = CD0Ah Return: AX = 0000h --------------------------------------------- INT 2F - Multiplex - 4DOS.COM v2.1+ AX = D44Dh BH = function 00h installation check Return: AX = 44DDh BL = minor version number BH = major version number CX = PSP segment address for current invocation DL = 4DOS shell number (0 for the first (root) shell, updated each time a new copy is loaded) 01h (internal) terminate current copy of 4DOS 02h ??? DX = ??? 03h EXEC program CX:DX -> EXEC record FEh deallocate shell number (passed through to root shell) ??? FFh allocate shell number (passed through to root shell) Format of EXEC record: Offset Size Description 00h WORD offset of ASCIZ program name in same segment as EXEC record 02h WORD offset of DOS commandline in same segment as EXEC record 04h WORD segment of environment to use for child process --------------------------------------------- INT 2F - Multiplex - ANARKEY.COM - INSTALLATION CHECK AX = E300h Return: AL = 00h not installed FFh installed Notes: ANARKEY.COM is a commandline recall program by Steven Calwas E3h is the default function number, but can be set to any value from C0h to FFh. --------------------------------------------- INT 2F - Multiplex - ANARKEY.COM v2.0 - GET ??? AX = E301h Return: DX:BX -> ??? Note: ANARKEY.COM is a commandline recall program by Steven Calwas Format of returned data structure: Offset Size Description -7 7 BYTEs signature ('ANARKEY') 00h WORD ??? (I see 0001h in v2.0) 02h WORD ??? (I see 0001h in v2.0) 04h WORD ??? (I see 0 in v2.0) 06h WORD PSP segment of next program loaded --------------------------------------------- INT 2F - Multiplex - AUTOPARK.COM - INSTALLATION CHECK AX = F700h Return: AL = 00h not installed FFh installed Note: AUTOPARK.COM is a resident hard disk parker by Alan D. Jones --------------------------------------------- INT 2F - Multiplex - AUTOPARK.COM - SET PARKING DELAY AX = F701h BX:CX = 32 bit count of 55ms timer ticks --------------------------------------------- INT 30 - (NOT A VECTOR!) FAR JMP instruction for CP/M-style calls the CALL 5 entry point does a FAR jump to here --------------------------------------------- INT 31 - overwritten by CP/M jump instruction in INT 30h --------------------------------------------- INT 32 - reserved --------------------------------------------- INT 33 - MS MOUSE - RESET DRIVER AND READ STATUS AX = 0000h Return: AX = status 0000h hardware/driver not installed FFFFh hardware/driver installed BX = number of buttons FFFFh two buttons 0000h other than two 0003h Mouse Systems mouse --------------------------------------------- INT 33 - MS MOUSE - SHOW MOUSE CURSOR AX = 0001h --------------------------------------------- INT 33 - MS MOUSE - HIDE MOUSE CURSOR AX = 0002h Note: multiple calls to hide the cursor will require multiple calls to function 01h to unhide it. --------------------------------------------- INT 33 - MS MOUSE - RETURN POSITION AND BUTTON STATUS AX = 0003h Return: BX = button status bit 0 left button pressed if 1 bit 1 right button pressed if 1 bit 2 middle button pressed if 1 (Mouse Systems mouse) CX = column DX = row --------------------------------------------- INT 33 - MS MOUSE - POSITION MOUSE CURSOR AX = 0004h CX = column DX = row Note: the row and column are truncated to the next lower multiple of the cell size; however, some versions of the Microsoft documentation state that the coordinates are rounded --------------------------------------------- INT 33 - MS MOUSE - RETURN BUTTON PRESS DATA AX = 0005h BX = button 0000h left 0001h right 0002h middle (Mouse Systems mouse) Return: AX = button states bit 0 left button pressed if 1 bit 1 right button pressed if 1 bit 2 middle button pressed if 1 (Mouse Systems mouse) BX = number of times specified button has been pressed since last call CX = column at time specified button was last pressed DX = row at time specified button was last pressed --------------------------------------------- INT 33 - MS MOUSE - RETURN BUTTON RELEASE DATA AX = 0006h BX = button 0000h left 0001h right 0002h middle (Mouse Systems mouse) Return: AX = button states bit 0 left button pressed if 1 bit 1 right button pressed if 1 bit 2 middle button pressed if 1 (Mouse Systems mouse) BX = number of times specified button has been released since last call CX = column at time specified button was last released DX = row at time specified button was last released --------------------------------------------- INT 33 - MS MOUSE - DEFINE HORIZONTAL CURSOR RANGE AX = 0007h CX = minimum column DX = maximum column --------------------------------------------- INT 33 - MS MOUSE - DEFINE VERTICAL CURSOR RANGE AX = 0008h CX = minimum row DX = maximum row --------------------------------------------- INT 33 - MS MOUSE - DEFINE GRAPHICS CURSOR AX = 0009h BX = column of cursor hot spot in bitmap (-16 to 16) CX = row of cursor hot spot (-16 to 16) ES:DX -> bitmap 16 words screen mask 16 words cursor mask each word defines the sixteen pixels of a row, low bit rightmost --------------------------------------------- INT 33 - MS MOUSE - DEFINE TEXT CURSOR AX = 000Ah BX = hardware/software text cursor 0000h software CX = screen mask DX = cursor mask 0001h hardware CX = start scan line DX = end scan line Note: when the software cursor is selected, the char/attribute data at the current screen position is ANDed with the screen mask and then XORed with the cursor mask --------------------------------------------- INT 33 - MS MOUSE - READ MOTION COUNTERS AX = 000Bh Return: CX = number of mickeys mouse moved horizontally since last call DX = number of mickeys mouse moved vertically Notes: a mickey is the smallest increment the mouse can sense positive values indicate down/right --------------------------------------------- INT 33 - MS MOUSE - DEFINE INTERRUPT SUBROUTINE PARAMETERS AX = 000Ch CX = call mask bit 0 call if mouse moves bit 1 call if left button pressed bit 2 call if left button released bit 3 call if right button pressed bit 4 call if right button released bit 5 call if middle button pressed (Mouse Systems mouse) bit 6 call if middle button released (Mouse Systems mouse) ES:DX -> FAR routine Note: when the subroutine is called, it is passed the following values: AX = condition mask (same bit assignments as call mask) BX = button state CX = cursor column DX = cursor row SI = horizontal mickey count DI = vertical mickey count Note: some versions of the Microsoft documentation incorrectly state that CX bit 0 means call if mouse cursor moves, and swap the meanings of SI and DI --------------------------------------------- INT 33 - MS MOUSE - LIGHT PEN EMULATION ON AX = 000Dh --------------------------------------------- INT 33 - MS MOUSE - LIGHT PEN EMULATION OFF AX = 000Eh --------------------------------------------- INT 33 - MS MOUSE - DEFINE MICKEY/PIXEL RATIO AX = 000Fh CX = number of mickeys per 8 pixels horizontally (default 8) DX = number of mickeys per 8 pixels vertically (default 16) --------------------------------------------- INT 33 - MS MOUSE - DEFINE SCREEN REGION FOR UPDATING AX = 0010h CX,DX = X,Y coordinates of upper left corner SI,DI = X,Y coordinates of lower right corner Note: mouse cursor is hidden during updating, and needs to be explicitly turned on again --------------------------------------------- INT 33 - PCMOUSE - SET LARGE GRAPHICS CURSOR BLOCK AX = 0012h BH = cursor width in words CH = rows in cursor BL = horizontal hot spot (-16 to 16) CL = vertical hot spot (-16 to 16) ES:DX -> bit map of screen and cursor maps Return: AX = -1 if successful --------------------------------------------- INT 33 - MS MOUSE - DEFINE DOUBLE-SPEED THRESHOLD AX = 0013h DX = threshold speed in mickeys/second, 0000h = default of 64/second Note: if speed exceeds threshold, the cursor's on-screen motion is doubled --------------------------------------------- INT 33 - MS MOUSE - EXCHANGE INTERRUPT SUBROUTINES AX = 0014h CX = call mask (see AX=000Ch) ES:DX -> FAR routine Return: CX = call mask of previous interrupt routine ES:DX = FAR address of previous interrupt routine --------------------------------------------- INT 33 - MS MOUSE - RETURN DRIVER STORAGE REQUIREMENTS AX = 0015h Return: BX = size of buffer needed to store driver state --------------------------------------------- INT 33 - MS MOUSE - SAVE DRIVER STATE AX = 0016h ES:DX -> buffer for driver state --------------------------------------------- INT 33 - MS MOUSE - RESTORE DRIVER STATE AX = 0017h ES:DX -> buffer containing saved state --------------------------------------------- INT 33 - MS MOUSE - SET ALTERNATE MOUSE USER HANDLER AX = 0018h CX = call mask bit 0 call if alt key pressed during event bit 1 call if ctrl key pressed during event bit 2 call if shift button pressed during event bit 3 call if right button released bit 4 call if right button pressed bit 5 call if left button released bit 6 call if left button pressed bit 7 call if mouse moves BX(???):DX = address of FAR routine Note: when the subroutine is called, it is passed the following values: AX = condition mask (same bit assignments as call mask) BX = button state CX = cursor column DX = cursor row DI = horizontal mickey count SI = vertical mickey count Note: up to three handlers can be defined by separate calls to this function --------------------------------------------- INT 33 - MS MOUSE - RETURN USER ALTERNATE INTERRUPT VECTOR AX = 0019h CX = call mask Return: BX:DX = user interrupt vector CX = call mask (0 if not found) Note: attempts to find a user event handler (defined by function 18h) whose call mask matches CX --------------------------------------------- INT 33 - MS MOUSE - SET MOUSE SENSITIVITY AX = 001Ah BX = horizontal speed \ CX = vertical speed / (see AX=000Fh) DX = double speed threshold (see AX=0013h) --------------------------------------------- INT 33 - MS MOUSE - RETURN MOUSE SENSITIVITY AX = 001Bh Return: BX = horizontal speed CX = vertical speed DX = double speed threshold --------------------------------------------- INT 33 - MS MOUSE - SET INTERRUPT RATE AX = 001Ch ??? --------------------------------------------- INT 33 - MS MOUSE - DEFINE DISPLAY PAGE NUMBER AX = 001Dh BX = display page number Note: the cursor will be displayed on the specified page --------------------------------------------- INT 33 - MS MOUSE - RETURN DISPLAY PAGE NUMBER AX = 001Eh Return: BX = display page number --------------------------------------------- INT 33 - MS MOUSE - DISABLE MOUSE DRIVER AX = 001Fh Return: AX = 001Fh successful FFFFh unsuccessful ES:BX = vector for Int 33h before mouse driver was first installed Note: restores vectors for Int 10h and Int 71h (8086) or Int 74h (286/386) if you restore Int 33h to ES:BX, driver will be completely disabled --------------------------------------------- INT 33 - MS MOUSE - ENABLE MOUSE DRIVER AX = 0020h Note: restores vectors for Int 10h and Int 71h (8086) or Int 74h (286/386) which were removed by function 1Fh --------------------------------------------- INT 33 - MS MOUSE - SOFTWARE RESET AX = 0021h Return: AX = FFFFh if mouse driver installed 0021h if mouse driver not installed BX = 2 if mouse driver is installed Note: identical to funtion 00h, but does not reset the mouse --------------------------------------------- INT 33 - MS MOUSE - SET LANGUAGE FOR MESSAGES AX = 0022h ??? --------------------------------------------- INT 33 - MS MOUSE - GET LANGUAGE FOR MESSAGES AX = 0023h Return: ??? --------------------------------------------- INT 33 - MS MOUSE - GET SOFTWARE VERSION AND MOUSE TYPE AX = 0024h Return: AX = FFFFh on error otherwise, BH = major version BL = minor version CH = type (1=bus, 2=serial, 3=InPort, 4=PS/2, 5=HP) CL = interrupt (0=PS/2, 2=IRQ2, 3=IRQ3,...,7=IRQ7) --------------------------------------------- INT 33 - PCMOUSE - GET MSMOUSE STORAGE REQUIREMENTS AX = 0042h Return: AX = FFFFh successful BX = buffer size in bytes for functions 50h and 52h = 0000h MSMOUSE not installed = 0042h functions 42h, 50h, and 52h not supported --------------------------------------------- INT 33 - PCMOUSE - SAVE MSMOUSE STATE AX = 0050h BX = buffer size ES:DX -> buffer Return: AX = FFFFh if successful --------------------------------------------- INT 33 - PCMOUSE - RESTORE MSMOUSE STATE AX = 0052h BX = buffer size ES:DX -> buffer Return: AX = FFFFh if successful --------------------------------------------- INT 34 - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode D8h --------------------------------------------- INT 35 - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode D9h --------------------------------------------- INT 36 - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode DAh --------------------------------------------- INT 37 - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode DBh --------------------------------------------- INT 38 - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode DCh --------------------------------------------- INT 39 - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode DDh --------------------------------------------- INT 3A - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode DEh --------------------------------------------- INT 3B - Borland/Microsoft languages - Floating Point emulation This interrupt emulates opcode DFh --------------------------------------------- INT 3C - Borland/Microsoft languages - Floating Point emulation This interrupt emulates instructions with an ES segment override --------------------------------------------- INT 3D - Borland/Microsoft languages - Floating Point emulation This interrupt emulates a standalone FWAIT instruction --------------------------------------------- INT 3E - Borland languages - Floating Point emulation "shortcut" call The two bytes following the INT 3E instruction are the subcode and a NOP (90h) Subcode Function DCh Load 8086 Stack with 8087 Registers DEh Load 8087 Registers from 8086 Stack E0h ??? (possibly check of form A <= X <= B) E2h ??? E4h compare TOS/R1 with two POP's E6h compare TOS/R1 with POP E8h FTST (check TOS value) EAh FXAM (check TOS value) ECh Sin EEh Cos F0h ArcTan F2h check TOS value F4h Ln (FLDLN2 to TOS) F6h FLD1 to TOS F8h FLDLG2 to TOS FAh Exp (FLDL2E to TOS) FCh ??? FEh FLDL2T to TOS --------------------------------------------- INT 3F - Overlay manager interrupt (Microsoft LINK.EXE) --------------------------------------------- INT 3F - Microsoft Dynamic Link Library manager --------------------------------------------- INT 40 - Hard disk - Relocated Floppy Handler (original INT 13h) --------------------------------------------- INT 41 - FIXED DISK PARAMETERS (XT,AT,XT2,XT286,PS except ESDI disks) Offset Size Description 00h WORD cylinders 02h BYTE heads 03h WORD starting reduced write current cylinder (XT only, 0 for others) 05h WORD starting write pre-comp cylinder 07h BYTE maximum ECC burst length 08h BYTE control byte bits 0-2: drive option (XT only, 0 for others) bit 3: set if more than 8 heads bit 4: always 0 bit 5: set if manufacturer's defect map on max cylinder+1 bit 6: disable ECC retries bit 7: disable access retries 09h BYTE standard timeout (XT only, 0 for others) 0Ah BYTE formatting timeout (XT only, 0 for others) 0Bh BYTE timeout for checking drive (XT only, 0 for others) 0Ch WORD landing zone (AT/PS2) 0Eh BYTE sectors/track (AT/PS2) 0Fh BYTE 0 --------------------------------------------- INT 42 - EGA/VGA/PS - Relocated (by EGA) Video Handler (original INT 10h) --------------------------------------------- INT 42 - Z100 - ??? --------------------------------------------- INT 43 - EGA/VGA/PS - User font table --------------------------------------------- INT 44 - EGA/VGA/CONV/PS - EGA/PCjr fonts, characters 00h to 7Fh --------------------------------------------- INT 44 - Novell NetWare - HIGH-LEVEL LANGUAGE API --------------------------------------------- INT 44 - Z100 - ??? --------------------------------------------- INT 45 - Z100 - ??? --------------------------------------------- INT 46 - Secondary Fixed Disk Params (see INT 41) (AT,XT286,PS except ESDI) --------------------------------------------- INT 46 - Z100 - ??? --------------------------------------------- INT 47 - reserved --------------------------------------------- INT 48 - PCjr - Cordless Keyboard Translation --------------------------------------------- INT 49 - PCjr - Non-keyboard Scan Code Translation Table --------------------------------------------- INT 4A - AT/CONV/PS - User Alarm Invoked by BIOS when real-time clock alarm occurs --------------------------------------------- INT 4B - reserved --------------------------------------------- INT 4C - reserved --------------------------------------------- INT 4D - reserved --------------------------------------------- INT 4E - reserved --------------------------------------------- INT 4F - reserved --------------------------------------------- INT 50 - through 57 - IRQ0-IRQ7 relocated by DESQview --------------------------------------------- INT 50 - through 57 - IRQ0-IRQ7 relocated by IBM 3278 emulation control program --------------------------------------------- INT 58 - reserved --------------------------------------------- INT 59 - GSS Computer Graphics Interface (GSS*CGI) DS:DX -> block of 5 array pointers Return: CF set on error AX = error code CF clear if successful AX = return code Note: INT 59 is the means by which GSS*CGI language bindings communicate with GSS*CGI device drivers and the GSS*CGI device driver controller. also used by the IBM Graphic Development Toolkit --------------------------------------------- INT 5A - Cluster adapter BIOS entry address ??? --------------------------------------------- INT 5B - Used by cluster adapter --------------------------------------------- INT 5C - NETBIOS INTERFACE ES:BX -> Network Control Block (see below) Return: AL = status 00h successful 01h bad buffer size 03h invalid NETBIOS command 05h timeout 06h receive buffer too small 08h bad session number 09h LAN card out of memory 0Ah session closed 0Bh command has been cancelled 0Dh name already exists 0Eh local name table full 0Fh name still in use, can't delete 11h local session table full 12h remote PC not listening 13h bad NCB_NUM field 14h no answer to CALL or no such remote 15h name not in local name table 16h duplicate name 17h bad delete 18h abnormal end 19h name error, multiple identical names in use 1Ah bad packet 21h network card busy 22h too many commands queued 23h bad LAN card number 24h command finished while cancelling 26h command can't be cancelled FFh NETBIOS busy Format of Network Control Block: Offset Size Description 00h BYTE ncb_command (see below) 01h BYTE ncb_retcode 02h BYTE ncb_lsn 03h BYTE ncb_num 04h DWORD -> ncb_buffer 08h WORD ncb_length 0Ah 16 BYTEs ncb_callname 1Ah 16 BYTEs ncb_name 2Ah BYTE ncb_rto 2Bh BYTE ncb_sto 2Ch DWORD -> ncb_post /* int (far *ncb_post)(); */ 30h BYTE ncb_lana_num 31h BYTE ncb_cmd_cplt 32h 14 BYTEs ncb_reserve Values for ncb_command field in NCB (or with 80h for non-waiting call): 10h start session with NCB_NAME name (call) 11h listen for call 12h end session with NCB_NAME name (hangup) 14h send data via NCB_LSN 15h receive data from a session 16h receive data from any session 17h send multiple data buffers 20h send unACKed message (datagram) 21h receive datagram 22h send broadcast datagram 23h receive broadcast datagram 30h add name to name table 31h delete name from name table 32h reset adapter card and tables 33h get adapter status 34h status of all sessions for name 35h cancel 36h add group name to name table 70h unlink from IBM remote program (no F0h function) 71h send data without ACK 72h send multiple buffers without ACK 78h find name 79h token-ring protocol trace Format of struc name: Offset Size Description 00h 16 BYTEs nm_name 10h BYTE nm_num 11h BYTE nm_status Format of structure astatus: 00h 6 BYTEs as_id 06h BYTE as_jumpers 07h BYTE as_post 08h BYTE as_major 09h BYTE as_minor 0Ah WORD as_interval 0Ch WORD as_crcerr 0Eh WORD as_algerr 10h WORD as_colerr 12h WORD as_abterr 14h DWORD as_tcount 18h DWORD as_rcount 1Ch WORD as_retran 1Eh WORD as_xresrc 20h 8 BYTEs as_res0 28h WORD as_ncbfree 2Ah WORD as_ncbmax 2Ch WORD as_ncbx 2Eh 4 BYTEs as_res1 32h WORD as_sespend 34h WORD as_msp 36h WORD as_sesmax 38h WORD as_bufsize 3Ah WORD as_names 3Ch 16 name structures as_name Note: Sytek PCnet card uses DMA 3. --------------------------------------------- INT 5C - TOPS INTERFACE ES:BX -> Network Control Block Note: TOPS card uses DMA 1, 3 or none. --------------------------------------------- INT 5D - reserved --------------------------------------------- INT 5E - reserved --------------------------------------------- INT 5F - reserved --------------------------------------------- INT 60 - FTP Driver - PC/TCP Packet Driver Specification The handler for the interrupt will start with a 3-byte jump instruction, followed by the ASCIZ string "PKT DRVR". To find the interrupt being used by the driver, an application should scan through interrupt vectors 60h to 80h until it finds one with the "PKT DRVR" string. --------------------------------------------- INT 60 - SYS_PROF.EXE - PROFILER STATUS AH = 00h Return: AX = 0000h profiling is off otherwise profiling is on Note: SYS_PROF.EXE is the TSR portion of a profiler from Micro Cornucopia #47 --------------------------------------------- INT 60 - FTP Driver - DRIVER INFO AX = 01FFh BX = handler returned by function 02h Return: CF set on error DH = error code (see below) CF clear if successful BX = version CH = network interface class (see below) DX = interface type (see below) CL = number DS:SI -> name AL = driver type 01h basic 02h extended FFh not installed Values for error code: 01h invalid handle number 02h no interfaces of the specified class found 03h no interfaces of the specified type found 04h no interfaces of the specified number found 05h bad packet type 06h interface does not support multicast messages 07h this packet driver cannot terminate 08h invalid receiver mode 09h insufficient space 0Ah type accessed but never released 0Bh bad command 0Ch packet could not be sent Values for Network Interface classes/types: Class 01h Ethernet/IEEE 802.3 01h 3COM 3C500/3C501 02h 3COM 3C505 03h MICOM-Interlan NI5010 04h BICC Data Networks 4110 05h BICC Data Networks 4117 06h MICOM-Interlan NP600 08h Ungermann-Bass PC-NIC 09h Univation NC-516 0Ah TRW PC-2000 0Bh MICOM-Interlan NI5210 0Ch 3COM 3C503 0Dh 3COM 3C523 0Eh Western Digital WD8003 0Fh Spider Systems S4 Class 02h ProNET-10 01h Proteon p1300 Class 03h IEEE 802.5/ProNet-4 01h IBM Token-Ring Adapter 02h Proteon p1340 03h Proteon p1344 Class 04h Omninet Class 05h Appletalk Class 06h Serial Line Class 07h StarLAN Class 08h ARCnet 01h Datapoint RIM --------------------------------------------- INT 60 - SYS_PROF.EXE - TURN PROFILING OFF AH = 01h Note: SYS_PROF.EXE is the TSR portion of a profiler from Micro Cornucopia #47 --------------------------------------------- INT 60 - FTP Driver - ACCESS TYPE AH = 02h AL = interface class BX = interface type DL = interface number DS:SI -> type CX = length of type ES:DI -> receiver Return: CF set on error DH = error code (see AX=01FFh) CF clear if successful AX = handle Receiver is called with AX = subfunction 00h application to return pointer to buffer in ES:DI ES:DI = 0000h:0000h means throw away packet 01h copy to DS:SI buffer completed BX = handle CX = buffer length when a packet is received --------------------------------------------- INT 60 - SYS_PROF.EXE - TURN PROFILING ON AH = 02h Note: SYS_PROF.EXE is the TSR portion of a profiler from Micro Cornucopia #47 --------------------------------------------- INT 60 - FTP Driver - RELEASE TYPE AH = 03h BX = handle Return: CF set on error DH = error code (see AX=01FFh) CF clear if successful --------------------------------------------- INT 60 - SYS_PROF.EXE - GET ADDRESS OF PROFILING TABLE AH = 03h Return: ES:BX -> profiling table Note: SYS_PROF.EXE is the TSR portion of a profiler from Micro Cornucopia #47 --------------------------------------------- INT 60 - FTP Driver - SEND PACKET AH = 04h DS:SI -> buffer CX = length Return: CF set on error DH = error code (see AX=01FFh) --------------------------------------------- INT 60 - SYS_PROF.EXE - CLEAR PROFILING TABLE AH = 04h Note: SYS_PROF.EXE is the TSR portion of a profiler from Micro Cornucopia #47 --------------------------------------------- INT 60 - FTP Driver - TERMINATE DRIVER FOR HANDLE AH = 05h BX = handle Return: CF set on error DH = error code (see AX=01FFh) --------------------------------------------- INT 60 - FTP Driver - GET ADDRESS AH = 06h BX = handle ES:DI -> buffer CX = length Return: CF set on error DH = error code (see AX=01FFh) CF clear if successful CX = length Note: copies the local net address associated with the handle into the buffer --------------------------------------------- INT 60 - FTP Driver - RESET INTERFACE AH = 07h BX = handle Return: CF set on error DH = error code (see AX=01FFh) --------------------------------------------- INT 60 - 10-NET - LOCK AND WAIT AH = 11h AL = drive number or 0 DX = number of seconds to wait ES:SI = Ethernet address or 0 DS:BX -> 31-byte ASCIZ semaphore name Return: AL = status 00h successful 01h timeout 02h server not responding 03h invalid semaphore name 04h semaphore list is full 05h invalid drive ID 06h invalid Ethernet address 07h not logged in 08h write to network failed 09h semaphore already logged for this CPU --------------------------------------------- INT 60 - 10-NET - LOCK AH = 12h AL = drive number or 00h ES:SI = Ethernet address or 0000h:0000h DS:BX -> 31-byte ASCIZ semaphore name Return: AL = status (see also AH=11h) 01h semaphore currently logged Note: unlike function 11h, this function returns immediately --------------------------------------------- INT 60 - 10-NET - UNLOCK AH = 13h AL = drive number or 00h ES:SI = Ethernet address or 0000h:0000h DS:BX -> 31-byte ASCIZ semaphore name Return: AL = status (see also AH=11h) 1 semaphore not logged --------------------------------------------- INT 60 - FTP Driver - SET RECEIVE MODE AH = 20h BX = handle CX = mode 01h turn off receiver 02h receive only packets sent to this interface 03h mode 2 plus broadcast packets 04h mode 3 plus limited multicast packets 05h mode 3 plus all multicast packets 06h all packets Return: CF set on error DH = error code --------------------------------------------- INT 60 - FTP Driver - GET RECEIVE MODE AH = 21h BX = handle Return: CF set on error DH = error code (see AX=01FFh) CF clear if successful AX = mode --------------------------------------------- INT 60 - FTP Driver - GET STATISTICS AH = 24h BX = handle Return: CF set on error DH = error code CF clear if successful DS:SI -> statistics (see below) Format of statistics: Offset Size Description 00h DWORD packets in 04h DWORD packets out 08h DWORD bytes in 0Ch DWORD bytes out 10h DWORD errors in 14h DWORD errors out 18h DWORD packets dropped --------------------------------------------- INT 61 - reserved for user interrupt --------------------------------------------- INT 62 - reserved for user interrupt --------------------------------------------- INT 63 - reserved for user interrupt --------------------------------------------- INT 64 - Novell NetWare - LOW-LEVEL API Note: equivalent to INT 7A --------------------------------------------- INT 65 - reserved for user interrupt --------------------------------------------- INT 65 - SD.COM v6.2 The unregistered version of SD62.COM uses the low byte of this vector to count the number of invocations, displaying a registration reminder each time after the 20th use. --------------------------------------------- INT 66 - reserved for user interrupt --------------------------------------------- INT 66 - THESPLUS - UNINSTALL AX = FFFEh BX = FFFEh Return: only if unsuccessful Note: installation check is for the interrupt handler to begin with the bytes FBh, 9Ch, and the string "THESPLUS" to appear at offset 0005h in the interrupt handler segment. --------------------------------------------- INT 67 - LIM EMS - GET MANAGER STATUS AH = 40h Return: AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested by application Note: this call can be used only after establishing that the EMS driver is in fact present --------------------------------------------- INT 67 - LIM EMS - GET PAGE FRAME SEGMENT AH = 41h Return: AH = 00h function successful BX = segment of page frame AH = error code (see AH=40h) --------------------------------------------- INT 67 - LIM EMS - GET NUMBER OF PAGES AH = 42h Return: AH = 00h function successful BX = number of unallocated pages DX = total number of pages AH = error code (see AH=40h) --------------------------------------------- INT 67 - LIM EMS - GET HANDLE AND ALLOCATE MEMORY AH = 43h BX = number of logical pages to allocate Return: AH = status 00h function successful DX = handle 80h internal error 81h hardware malfunction 84h undefined function requested 85h no more handles available 87h more pages requested than physically exist 88h more pages requested than currently available 89h zero pages requested --------------------------------------------- INT 67 - LIM EMS - MAP MEMORY AH = 44h AL = physical page number (0-3) BX = logical page number DX = handle Return: AH = status 00h function successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 8Ah invalid logical page number 8Bh illegal physical-page number --------------------------------------------- INT 67 - LIM EMS - RELEASE HANDLE AND MEMORY AH = 45h DX = EMM handle Return: AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 86h error in save or restore of mapping context --------------------------------------------- INT 67 - LIM EMS - GET EMM VERSION AH = 46h Return: AH = status 00h successful AL = EMM version number 80h internal error 81h hardware malfunction 84h undefined function requested --------------------------------------------- INT 67 - LIM EMS - SAVE MAPPING CONTEXT AH = 47h DX = handle Return: AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 8Ch page-mapping hardware state save area is full 8Dh save of mapping context failed --------------------------------------------- INT 67 - LIM EMS - RESTORE MAPPING CONTEXT AH = 48h DX = handle Return: AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 8Eh restore of mapping context failed --------------------------------------------- INT 67 - LIM EMS - reserved - GET I/O PORT ADDRESSES AH = 49h Note: defined in EMS 3.0, but undocumented in EMS 3.2 --------------------------------------------- INT 67 - LIM EMS - reserved - GET TRANSLATION ARRAY AH = 4Ah Note: defined in EMS 3.0, but undocumented in EMS 3.2 --------------------------------------------- INT 67 - LIM EMS - GET NUMBER OF EMM HANDLES AH = 4Bh Return: AH = status 00h successful BX = number of EMM handles 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested --------------------------------------------- INT 67 - LIM EMS - GET PAGES OWNED BY HANDLE AH = 4Ch DX = EMM handle Return: AH = status 00h successful BX = number of logical pages 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested --------------------------------------------- INT 67 - LIM EMS - GET PAGES FOR ALL HANDLES AH = 4Dh ES:DI -> array to receive information Return: AH = status 00h successful BX = number of active EMM handles array filled with 2-word entries, consisting of a handle and the number of pages allocated to that handle 80h internal error 81h hardware malfunction 84h undefined function requested --------------------------------------------- INT 67 - LIM EMS - GET OR SET PAGE MAP AH = 4Eh AL = 00h if getting mapping registers 01h if setting mapping registers 02h if getting and setting mapping registers at once 03h if getting size of page-mapping array DS:SI -> array holding information (AL=01/02) ES:DI -> array to receive information (AL=00/02) Return: AH = status 00h successful AL = bytes in page-mapping array (AL=03h only) array pointed to by ES:DI receives mapping info (AL=00h/02h) 80h internal error 81h hardware malfunction 84h undefined function requested 8Fh undefined subfunction parameter A3h contents of source array corrupted (EMS 4.0?) Note: this function was designed to be used by multitasking operating systems and should not ordinarily be used by appplication software. --------------------------------------------- INT 67 - LIM EMS 4.0 - GET/SET PARTIAL PAGE MAP AH = 4Fh AL = subfunction 00h get partial page map DS:SI -> structure containing list of segments whose mapping contexts are to be saved ES:DI -> array to receive page map 01h set partial page map DS:SI -> structure containing saved partial page map 02h get size of partial page map BX = number of mappable segments in the partial map to be saved Return: AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested 8Bh one of specified segments is not mappable 8Fh undefined subfunction parameter A3h contents of partial page map corrupted or count of mappable segments exceeds total number of mappable segments in system AL = size of partial page map for subfunction 02h --------------------------------------------- INT 67 - LIM EMS 4.0 - MAP/UNMAP MULTIPLE HANDLE PAGES AH = 50h AL = subfunction 00h 01h DX = handle CX = number of entries in array DS:SI -> mapping array Return: AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 8Ah one or more logical pages are invalid 8Bh one or more physical pages are invalid 8Fh invalid subfunction --------------------------------------------- INT 67 - LIM EMS 4.0 - REALLOCATE PAGES AH = 51h DX = handle BX = number of pages to be allocated to handle Return: BX = actual number of pages allocated to handle AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 87h more pages requested than present in system 88h more pages requested than currently available --------------------------------------------- INT 67 - LIM EMS 4.0 - GET/SET HANDLE ATTRIBUTES AH = 52h AL = subfunction 00h get handle attributes Return: AL = attribute 00h handle is volatile 01h handle is nonvolatile 01h set handle attributes BL = new attribute (see returned AL) 02h get attribute capability Return: AL = attribute capability 00h only volatile handles supported 01h both volatile and non-volatile supported DX = handle Return: AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 8Fh undefined subfunction 90h undefined attribute type 91h feature not supported --------------------------------------------- INT 67 - LIM EMS 4.0 - GET/SET HANDLE NAME AH = 53h AL = subfunction 00h get handle name ES:DI -> 8-byte handle name array 01h set handle name DS:SI -> 8-byte handle name DX = handle Return: AH = status 00h successful 80h internal error 81h hardware malfunction 83h invalid handle 84h undefined function requested 8Fh undefined subfunction A1h duplicate handle name --------------------------------------------- INT 67 - LIM EMS 4.0 - GET HANDLE DIRECTORY AH = 54h AL = subfunction 00h get handle directory ES:DI -> buffer for handle directory 01h search for named handle DS:SI -> 8-byte name 02h get total number of handles Return: AL = number of entries in handle directory (subfunction 00h) DX = value of named handle (subfunction 01h) BX = total number of handles (subfunction 02h) AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested 8Fh undefined subfunction A0h no such handle name A1h a handle found had no name --------------------------------------------- INT 67 - LIM EMS 4.0 - ALTER PAGE MAP AND JUMP AH = 55h AL = subfunction 00h physical page numbers provided by caller 01h segment addresses provided by caller DX = handle DS:SI -> structure containing map and jump address Return: (at target address unless error) AH = status 00h successful 80h internal error 81h hardware failure 83h invalid handle 84h undefined function requested 8Ah invalid logical page number encountered 8Bh invalid physical page number encountered 8Fh invalid subfunction --------------------------------------------- INT 67 - LIM EMS 4.0 - ALTER PAGE MAP AND CALL AH = 56h AL = subfunction 00h physical page numbers provided by caller DX = handle DS:SI -> structure containing page map and call address 01h segment addresses provided by caller DX = handle DS:SI -> structure containing page map and call address 02h get page map stack space required Return: BX = stack space required Return: (if successful, the target address is called. Use a RETF to return and restore mapping context) AH = status (see AH=55h) --------------------------------------------- INT 67 - LIM EMS 4.0 - MOVE/EXCHANGE MEMORY REGION AH = 57h AL = subfunction 00h move memory region 01h exchange memory region DS:SI -> structure describing source and destination Return: AH = status 00h successful 80h internal error 81h hardware failure 83h invalid handle 84h undefined function requested 8Ah invalid logical page number encountered 8Fh undefined subfunction 92h successful, but a portion of the source region has been overwritten 93h length of source or destination region exceeds length of region allocated to either source or destination handle 94h conventional and expanded memory regions overlap 95h offset within logical page exceeds size of logical page 96h region length exceeds 1M 97h source and destination EMS regions have same handle and overlap 98h memory source or destination type undefined A2h attempted to wrap around 1M conventional address space --------------------------------------------- INT 67 - LIM EMS 4.0 - GET MAPPABLE PHYSICAL ADDRESS ARRAY AH = 58h AL = subfunction 00h get mappable physical address array ES:DI -> buffer to be filled with array 01h get number of entries in m.p.a. array Return: CX = number of entries in array AH = status 00h successful 80h internal error 81h hardware failure 84h undefined function requested 8Fh undefined subfunction --------------------------------------------- INT 67 - LIM EMS 4.0 - GET EXPANDED MEMORY HARDWARE INFORMATION AH = 59h AL = subfunction 00h get hardware configuration array ES:DI -> buffer to be filled with array 01h get unallocated raw page count Return: BX = unallocated raw pages DX = total raw pages Return: AH = status 00h successful 80h internal error 81h hardware failure 84h undefined function requested 8Fh undefined subfunction A4h access denied by operating system Note: subfunction 00h is for use by operating systems only, and can be enabled or disabled at any time by the operating system --------------------------------------------- INT 67 - LIM EMS 4.0 - ALLOCATE STANDARD/RAW PAGES AH = 5Ah AL = subfunction 00h allocate standard pages 01h allocate raw pages BX = number of pages to allocate Return: DX = handle AH = status 00h successful 80h internal error 81h hardware failure 84h undefined function requested 85h no more handles available 87h insufficient memory pages in system 88h insufficient memory pages available 8Fh undefined subfunction --------------------------------------------- INT 67 - LIM EMS 4.0 - ALTERNATE MAP REGISTER SET AH = 5Bh AL = subfunction 00h get alternate map register set Return: BL = current active alternate map register set number ES:DI -> map register context save area if BL=00h 01h set alternate map register set BL = new alternate map register set number ES:DI -> map register context save area if BL=0 02h get alternate map save array size Return: DX = array size in bytes 03h allocate alternate map register set Return: BL = number of map register set; 00h = not supported 04h deallocate alternate map register set BL = number of alternate map register set Return: AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested 8Fh undefined subfunction 9Ah specified alternate map register set not supported 9Bh all alternate map register sets currently allocated 9Ch alternate map register sets not supported 9Dh undefined or unallocated alternate map register set A3h source array corrupted A4h operating system denied access Note: this function is for use by operating systems only, and can be enabled or disabled at any time by the operating system --------------------------------------------- INT 67 - LIM EMS 4.0 - ALTERNATE MAP REGISTER SET - DMA REGISTERS AH = 5Bh AL = subfunction 05h allocate DMA register set Return: BL = DMA register set number, 00h if not supported 06h enable DMA on alternate map register set BL = DMA register set number DL = DMA channel number 07h disable DMA on alternate map register set BL = DMA register set number 08h deallocate DMA register set BL = DMA register set number Return: AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested 8Fh undefined subfunction 9Ah specified DMA register set not supported 9Bh all DMA register sets currently allocated 9Ch alternate DMA sets not supported 9Dh undefined or unallocated DMA register set 9Eh dedicated DMA channels not supported 9Fh specified dedicated DMA channel not supported A3h source array corrupted A4h operating system denied access Note: this function is for use by operating systems only, and can be enabled or disabled at any time by the operating system --------------------------------------------- INT 67 - LIM EMS 4.0 - PREPARE EXPANDED MEMORY HARDWARE FOR WARM BOOT AH = 5Ch Return: AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested --------------------------------------------- INT 67 - LIM EMS 4.0 - ENABLE/DISABLE OS FUNCTION SET FUNCTIONS AH = 5Dh AL = subfunction 00h enable OS Function Set 01h disable OS Function Set 02h return access key (resets memory manager, returns access key at next invocation) BX,CX = access key returned by first invocation Return: BX,CX = access key, returned only on first invocation of function AH = status 00h successful 80h internal error 81h hardware malfunction 84h undefined function requested 8Fh undefined subfunction A4h operating system denied access --------------------------------------------- INT 67 - EEMS - GET PHYSICAL WINDOW ARRAY AH = 60h ES:DI -> buffer Return: AH = status AL = number of entries buffer at ES:DI filled --------------------------------------------- INT 67 - EEMS - GENERIC ACCELERATOR CARD SUPPORT AH = 61h ??? Return: ??? Note: can be used by accelerator card manufacturer to flush RAM cache, ensuring that the cache accurately reflects what the processor would see without the cache. --------------------------------------------- INT 67 - EEMS - GET ADDRESSES OF ALL PAGE FRAMES IN SYSTEM AH = 68h ES:DI -> buffer Return: AH = status AL = number of entries buffer at ES:DI filled Note: equivalent to LIM 4.0 function 58h --------------------------------------------- INT 67 - EEMS - MAP PAGE INTO FRAME AH = 69h AL = frame number BX = page number DX = handle Return: AH = status Note: similar to EMS function 44h --------------------------------------------- INT 67 - EEMS - PAGE MAPPING AH = 6Ah AL = subfunction 00h save partial page map CH = first page frame CL = number of frames ES:DI -> buffer which is to be filled 01h restore partial page map CH = first page frame CL = number of frames DI:SI -> previously saved page map 02h save and restore partial page map CH = first page frame CL = number of frames ES:DI = buffer for current page map DI:SI = new page map 03h get size of save array CH = first page frame CL = number of frames Return: AL = size of array in bytes 04h switch to standard map register setting 05h switch to alternate map register setting 06h deallocate pages mapped to frames in conventional memory CH = first page frame CL = number of frames Return: AH = status Note: similar to EMS function 4Eh, except that a subrange of pages can be specified --------------------------------------------- INT 67 - Virtual Control Program Interface - INSTALLATION CHECK AX = DE00h Return: AH = 00h VCPI is present BH = major version number BL = minor version number AH nonzero VCPI not present --------------------------------------------- INT 67 - Virtual Control Program Interface - GET PROTECTED MODE INTERFACE AX = DE01h ES:DI -> 4K page table buffer DS:SI -> three descriptor table entries in GDT first becomes code segment descriptor, other two for use by main control program Return: AH = 00h successful DI -> first unused page table entry in buffer EBX -> protected mode entry point in code segment AH = nonzero failed --------------------------------------------- INT 67 - Virtual Control Program Interface - GET MAX PHYSICAL MEMORY ADDRESS AX = DE02h Return: AH = 00h successful EDX = physical address of highest 4K memory page AH nonzero: failed --------------------------------------------- INT 67 - Virtual Control Program Interface - GET NUMBER OF FREE 4K PAGES AX = DE03h Return: AH = 00h successful EDX = number of free 4K pages AH nonzero: failed Notes: returns total number of pages available to ALL tasks in system also available in protected mode by calling the protected-mode VCPI entry point --------------------------------------------- INT 67 - Virtual Control Program Interface - ALLOCATE A 4K PAGE AX = DE04h Return: AH = 00h successful EDX = physical address of allocated page AH nonzero: failed Notes: the client program is responsible for freeing all memory allocated with this call before terminating also available in protected mode by calling the protected-mode VCPI entry point --------------------------------------------- INT 67 - Virtual Control Program Interface - FREE 4K PAGE AX = DE05h EDX = physical address of 4K page Return: AH = 00h successful AH nonzero: failed Note: also available in protected mode by calling the protected-mode VCPI entry point --------------------------------------------- INT 67 - Virtual Control Program Interface - GET PHYS ADDR OF PAGE IN FIRST MB AX = DE06h CX = page number (linear address shifted right 12 bits) Return: AH = 00h successful EDX = physical address of page AH nonzero: invalid page number (AH = 8Bh recommended) --------------------------------------------- INT 67 - Virtual Control Program Interface - READ CR0 AX = DE07h Return: AH = 00h EBX = value of Control Register 0 --------------------------------------------- INT 67 - Virtual Control Program Interface - READ DEBUG REGISTERS AX = DE08h ES:DI -> array of 8 DWORDs Return: AH = 00h buffer filled with DR0 first, DR7 last, DR4 and DR5 unused --------------------------------------------- INT 67 - Virtual Control Program Interface - SET DEBUG REGISTERS AX = DE09h ES:DI -> array of 8 DWORDs holding new values of debug registers Return: AH = 00h Note: values for DR4 and DR5 ignored --------------------------------------------- INT 67 - Virtual Control Program Interface - GET 8259 INTERRUPT VECTOR MAPPINGS AX = DE0Ah Return: AH = 00h successful BX = first vector used by master 8259 (IRQ0) CX = first vector used by slave 8259 (IRQ8) AH nonzero: failed Note: CX is undefined in systems without a slave 8259 --------------------------------------------- INT 67 - Virtual Control Program Interface - SET 8259 INTERRUPT VECTOR MAPPINGS AX = DE0Bh BX = first vector used by master 8259 CX = first vector used by slave 8259 interrupts disabled Return: AH = 00h successful AH nonzero: failed Notes: This call merely informs the server that the client has changed the interrupt mappings. The client may not change the mappings if they have already been changed by the server or another client, and is responsible for restoring the original mappings before terminating. --------------------------------------------- INT 67 - Virtual Control Program Interface - SWITCH TO PROTECTED MODE AX = DE0Ch ESI = linear address in first megabyte of values for system registers interrupts disabled Return: interrupts disabled GDTR, IDTR, LDTR, TR loaded SS:ESP must have at least 16 bytes space, and the entry point is required to set up a new stack before enabling interrupts EAX, ESI, DS, ES, FS, GS destroyed Note: in protected mode, calling the protected-mode VCPI entry point with AX = DE0Ch DS = segment selector from function DE01h SS:ESP in first megabyte of linear memory STACK: QWORD return address from FAR call to 32-bit segment DWORD EIP DWORD CS DWORD reserved for EFLAGS DWORD ESP DWORD SS DWORD ES DWORD DS DWORD FS DWORD GS and interrupts disabled, will switch to virtual86 mode with interrupts disabled, all segment registers loaded, and EAX destroyed. Format of system register values for switch to protected mode: Offset Size Description 00h DWORD value for CR3 04h DWORD linear address in first megabyte of value for GDTR 08h DWORD linear address in first megabyte of value for IDTR 0Ch WORD value for LDTR 0Eh WORD value for TR 10h PWORD CS:EIP of protected mode entry-point --------------------------------------------- INT 68 - APPC/PC AH = 01h DS:DX -> control block Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD verb (action) 0Eh 6 BYTEs 0 14h DWORD (high byte first) return code (see below) ---if verb = 1B00h (DISPLAY)--- 18h WORD 0 1Ah 8 BYTEs (high byte first) logical unit ID 22h 8 BYTEs (high byte first) partner logical unit name 2Ah 8 BYTEs (high byte first) mode name 32h BYTE logical unit session limit 33h BYTE partner logical unit session limit 34h BYTE mode maximum negotiable session limit 35h BYTE current session limit 36h BYTE minimum negotiated winner limit 37h BYTE maximum negotiated loser limit 38h BYTE active session count 39h BYTE active CONWINNER session count 3Ah BYTE active CONLOSER session count 3Bh BYTE session termination count 3Ch BYTE bit 7: SESSION_TERMINATION_TARGET_DRAIN bit 6: SESSION_TERMINATION_SOURCE_DRAIN ---if verb=2000h (Attach Physical Unit)--- 18h WORD 0 1Ah BYTE version 1Bh BYTE release 1Ch 8 BYTEs (high byte first) net name 24h 8 BYTEs (high byte first) physical unit name 2Ch 8 BYTEs 0 34h DWORD pointer to SYSTEM_LOG_EXIT routine, FFFFFFFFh=don't log errors 38h DWORD 0 3Ch BYTE 00h RETURN_CONTROL: COMPLETE 01h RETURN_CONTROL: INCOMPLETE ---if verb=2100h (Attach Logical Unit)--- 18h WORD 70 offset to partner logical unit record 1Ah 8 BYTEs (high byte first) logical unit name 22h 8 BYTEs (high byte first) logical unit ID 2Ah BYTE logical unit local address 2Bh BYTE logical unit session limit 2Ch DWORD pointer to CREATE_TP_EXIT routine, FFFFFFFFh = reject incoming ALLOCATEs 00000000h = queue ALLOCATEs 30h DWORD 0 34h DWORD pointer to SYSTEM_LOG_EXIT routine, FFFFFFFFh=don't log errors 38h DWORD 0 3Ch BYTE maximum TPs 3Dh BYTE queue depth 3Eh DWORD pointer to LU_LU_PASSWORD_EXIT routine, FFFFFFFFh=no pswd exit 42h DWORD 0 46h WORD total length of partner records for each partner logical unit: WORD length of this partner logical unit record WORD 42 offset to mode records 8 BYTEs (high byte first) partner logical unit name BYTE partner logical unit security capabilities bit 7: already verified bit 6: conversation level security bit 5: session level security BYTE partner logical unit session limit WORD partner logical unit maximum MC_SEND_LL 8 BYTEs (high byte first) partner logical unit DLC name BYTE partner logical unit adapter number 17 BYTEs (counted string) partner logical unit adapter address WORD total length of mode records for each mode: WORD 16 length of this mode record 8 BYTEs (high byte first) mode name WORD RU_SIZE high bound WORD RU_SIZE low bound BYTE mode maximum negotiable session limit BYTE pacing size for receive ---if verb=2200h (Detach Logical Unit)--- 18h 8 BYTEs (high byte first) logical unit ID 20h BYTE 0 ---if verb=2700h (Detach Physical Unit)--- 18h BYTE 00h type: hard 01h type: soft ---if verb=2B00h (Activate DLC)--- 18h 8 BYTEs (high byte first) DLC name 20h BYTE adapter number Values for return code: 0000h successful 0001h BAD_TP_ID 0002h BAD_CONV_ID 0003h bad logical unit ID 0008h no physical unit attached 0110h bad state 01B1h BAD_PART_LUNAME 01B2h bad mode name 0201h physical unit already active 0211h logical unit already active 0212h BAD_PART_SESS 0213h BAD_RU_SIZES 0214h BAD_MODE_SESS 0216h BAD_PACING_CNT 0219h EXTREME_RUS 021Ah SNASVCMG_1 0223h SSCP_CONNECTED_LU 0230h invalid change 0243h too many TPs 0272h adapter close failure 0281h GET_ALLOC_BAD_TYPE 0282h unsuccessful 0283h DLC failure 0284h unrecognized DLC 0286h duplicate DLC 0301h SSCP_PU_SESSION_NOT_ACTIVE 0302h data exceeds RU size 0401h invalid direction 0402h invalid type 0403h segment overlap 0404h invalid first character 0405h table error 0406h conversion error F0010000h APPC disabled F0020000h APPC busy F0030000h APPC abended F0040000h incomplete Routines defined by LU_LU_PASSWORD_EXIT, CREATE_TP_EXIT, and SYSTEM_LOG_EXIT pointers are called by pushing the DWORD pointer to the verb on the stack and then performing a FAR call. Format of ACCESS_LU_LU_PW verb: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD 1900h 0Eh 8 BYTEs (high byte first) logical unit ID 16h 8 BYTEs (high byte first) logical unit name 1Eh 8 BYTEs (high byte first) partner logical unit name 26h 17 BYTEs (counted string) partner fully qualified logical unit name 37h BYTE password available (0=no, 1=yes) 38h 8 BYTEs password Format of CREATE_TP verb: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD 2300h 0Eh 6 BYTEs 0 14h DWORD (high byte first) sense code 00000000h Ok 080F6051h SECURITY_NOT_VALID 084B6031h TP_NOT_AVAIL_RETRY 084C0000h TP_NOT_AVAIL_NO_RETRY 10086021h TP_NAME_NOT_RECOGNIZED 10086034h CONVERSATION_TYPE_MISMATCH 10086041h SYNC_LEVEL_NOT_SUPPORTED 18h 8 BYTEs (high byte first) TP ID 20h 8 BYTEs (high byte first) logical unit ID 28h DWORD (high byte first) conversation ID 2Ch BYTE 0 basic conversation, 1 mapped conversation 2Dh BYTE 0 no sync level, 1 confirm 2Eh BYTE reserved 2Fh 65 BYTEs (counted string) transaction program name 70h 6 BYTEs 0 76h WORD length of ERROR_LOG_DATA to return 78h DWORD pointer to ERROR_LOG_DATA buffer 7Ch 8 BYTEs (high byte first) partner logical unit name 84h 18 BYTEs (counted string) partner fully qualified logical unit name 96h 8 BYTEs (high byte first) mode name 9Eh 12 BYTEs 0 AAh 11 BYTEs (counted string) password B5h 11 BYTEs (counted string) user ID C0h BYTE 0 verification should be performed 1 already verified Format of SYSLOG verb: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD 2600h 0Eh 10 BYTEs 0 18h WORD (high byte first) type 1Ah DWORD (high byte first) subtype 1Eh DWORD pointer to ADDITIONAL_INFO 22h DWORD (high byte first) conversation ID 26h 8 BYTEs (high byte first) TP ID 2Eh 8 BYTEs (high byte first) physical unit or logical unit name 36h WORD length of data 38h DWORD pointer to data 3Ch BYTE 0 --------------------------------------------- INT 68 - APPC/PC AH = 02h DS:DX -> control block Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD verb (action) 0Eh BYTE 1 if MC_ (mapped conversation) form of verb 0 if basic verb 0Fh 5 BYTEs reserved (0) 14h WORD (high byte first) primary return code (see below) 16h DWORD (high byte first) error code (see below) 1Ah 8 BYTEs (high byte first) TP_ID 22h DWORD (high byte first) conversation ID ---if verb=0100h (Allocate or MC_Allocate)--- 26h BYTE (MC_Allocate only) 0 basic conversation 1 mapped conversation 27h BYTE 00h SYNC_LEVEL = none 01h SYNC_LEVEL = confirm 28h WORD 0000h 2Ah BYTE 00h RETURN_CONTROL: when session allocated 01h RETURN_CONTROL: immediate 02h RETURN_CONTROL: when session free 2Bh 8 BYTEs 0 33h 8 BYTEs (high byte first) partner logical unit name 3Bh 8 BYTEs (high byte first) mode name 43h 65 BYTEs (counted string) TP name 84h BYTE 00h security: none 01h security: same 02h security: pgm 85h 11 BYTEs 0 90h 11 BYTEs (counted string) password 9Bh 11 BYTEs (counted string) user ID A6h WORD PIP_DATA length A8h DWORD pointer to PIP_DATA ---if verb=0300h (Confirm or MC_Confirm)--- 26h BYTE request to send received (0=no, 1=yes) ---if verb=0400h (Confirmed or MC_Confirmed), no additional fields--- ---if verb=0500h (Deallocate or MC_Deallocate)--- 26h BYTE 0 27h BYTE type 0 SYNC_LEVEL 1 FLUSH 2 ABEND_PROC 3 ABEND_SVC 4 ABEND_TIMER 5 ABEND 28h WORD (MC_Deallocate only) length of error log data 2Ah DWORD (MC_Deallocate only) pointer to error log data ---if verb=0600h (Flush or MC_Flush), no additional fields--- ---if verb=0700h (Get_Attributes or MC_Get_Attributes)--- 26h 8 BYTEs (high byte first) logical unit ID 2Eh BYTE 0 2Fh BYTE SYNC_LEVEL (0=none, 1=confirm) 30h 8 BYTEs (high byte first) mode name 38h 8 BYTEs (high byte first) own net name 40h 8 BYTEs (high byte first) own logical unit name 48h 8 BYTEs (high byte first) partner logical unit name 50h 18 BYTEs (counted string) partner's fully qualified logical unit name 62h BYTE 0 63h 11 BYTEs (counted string) user ID ---if verb=0800h (Get_Type)--- 26h BYTE type (0=basic conversation, 1=mapped conversation) ---if verb=0900h (Post_on_Receipt)--- 26h WORD maximum length 28h BYTE fill (0=buffer, 1=LL) ---if verb=0A00h (Prepare_to_Receive or MC_Prepare_to_Receive)--- 26h BYTE type (0=SYNC_LEVEL, 1=FLUSH) 27h BYTE locks (0=short, 1=long) ---if verb=0B00h (Receive_and_Wait or MC_Receive_and_Wait)--- 26h BYTE what received 00h data 01h data complete 02h data incomplete 03h confirm 04h confirm send 05h confirm deallocate 06h send 27h BYTE (MC_Receive_and_Wait only) fill (0=buffer, 1=LL) 28h BYTE Request_to_Send_Received (0=no, 1=yes) 29h WORD maximum length 2Bh WORD data length 2Dh DWORD pointer to data ---if verb=0C00h (Receive_Immediate or MC_Receive_Immediate)--- 26h BYTE what received 00h data 01h data complete 02h data incomplete 03h confirm 04h confirm send 05h confirm deallocate 06h send 27h BYTE (MC_Receive_Immediate only) fill (0=buffer, 1=LL) 28h BYTE Request_to_Send_Received (0=no, 1=yes) 29h WORD maximum length 2Bh WORD data length 2Dh DWORD pointer to data ---if verb=0E00h (Request_to_Send or MC_Request_to_Send), no other fields--- ---if verb=0F00h (Send_Data or MC_Send_Data)--- 26h BYTE request to send received (0=no, 1=yes) 27h BYTE 0 28h WORD data length 2Ah DWORD pointer to data ---if verb=1000h (Send_Error or MC_Send_Error)--- 26h BYTE request to send received (0=no, 1=yes) 27h BYTE type (0=program, 1=SVC) 28h DWORD 0 2Ch WORD (MC_Send_Error only) LOG_DATA length 2Eh DWORD (MC_Send_Error only) pointer to LOG_DATA ---if verb=1200h (Test or MC_Test)--- 26h BYTE (MC_Test only) test (0=posted, 1=request_to_send received) Note: error code has different interpretations for: 0 posted data 1 posted not data (primary return code = 0) 1 bad TP_ID (primary return code = 1) ---if verb=1300h (Wait)--- 26h BYTE number of conversations to wait on Note: error codes have interpretations as for 1200h above Values for primary return code: 0000h successful 0001h parameter check 0002h state check 0003h allocation error 0005h deallocate abended 0006h deallocate abended program 0007h deallocate abended SVC 0008h deallocate abended timer 0009h deallocate normal return 000Ah data posting blocked 000Bh posting not active 000Ch PROG_ERROR_NO_TRUNC 000Dh PROG_ERROR_TRUNC 000Eh PROG_ERROR_PURGING 000Fh CONV_FAILURE_RETRY 0010h CONV_FAILURE_NO_RETRY 0011h SVC_ERROR_NO_TRUNC 0012h SVC_ERROR_TRUNC 0013h SVC_ERROR_PURGING 0014h unsuccessful 0018h CNOS partner logical unit reject 0019h conversation type mixed F001h APPC disabled F002h APPC busy F003h APPC abended F004h incomplete Values for error code: 0001h bad TP ID 0002h bad conversation ID 0004h allocation error, no retry 0005h allocation error, retry 0006h data area crosses segment boundary 0010h bad TPN length 0011h bad CONV length 0012h bad SYNC level 0013h bad security selection 0014h bad return control 0015h SEC_TOKENS too big 0016h PIP_LEN incorrect 0017h no use of SNASVCMG 0018h unknown partner mode 0031h confirm: SYNC_NONE 0032h confirm: bad state 0033h confirm: NOT_LL_BDY 0041h confirmed: bad state 0051h deallocate: bad type 0052h deallocate: flush bad state 0053h deallocate: confirm bad state 0055h deallocate: NOT_LL_BDY 0057h deallocate: log LL_WRONG 0061h flush: not send state 0091h post on receipt: invalid length 0092h post on receipt: not in receive state 0093h post on receipt: bad fill 00A1h prepare to receive:invalid type 00A2h prepare to receive: unfinished LL 00A3h prepare to receive: not in send state 00B1h receive and wait: bad state 00B2h receive and wait: NOT_LL_BDY 00B5h receive and wait: bad fill 00C1h receive immediate: not in receive state 00C4h receive immediate: bad fill 00E1h request to send: not in receive state 00F1h send data: bad LL 00F2h send data: not in send state 0102h send error: log LL wrong 0103h send error: bad type 0121h test: invalid type 0122h test: not in receive state --------------------------------------------- INT 68 - APPC/PC AH = 03h DS:DX -> control block (see below) Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD verb (action) 0Eh 6 BYTEs 0 14h DWORD (high byte first) return code (see AH=01h) 18h WORD 0 1Ah 8 BYTEs (high byte first) logical unit ID ---if verb=2400h (TP Started), control block continues--- 22h 8 BYTEs (high byte first) TP ID ---if verb=2800h (Get ALLOCATE), control block continues--- 22h BYTE type 00h dequeue 01h test 23h DWORD pointer to CREATE_TP record ---if verb=2A00h (Change Logical Unit). control block continues--- 22h DWORD pointer to CREATE_TP_EXIT routine FFFFFFFFh reject incoming ALLOCATEs 00000000h queue ALLOCATEs 26h DWORD 00000000h 2Ah DWORD pointer to SYSTEM_LOG_EXIT routine, FFFFFFFFh= don't log errors 2Eh DWORD 00000000h 32h BYTE maximum TPs 33h BYTE 00h stop QUEUE_ALLOCATEs 01h resume QUEUE_ALLOCATEs 34h DWORD pointer to LU_LU_PASSWORD_EXIT routine, FFFFFFFFh = no exit 38h DWORD 00000000h --------------------------------------------- INT 68 - APPC/PC AH = 04h DS:DX -> control block (see below) Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD verb (action) 2500h TP_ENDED 2900h TP_VALID 0Eh 6 BYTEs 0 14h DWORD (high byte first) return code (see AH=01h) 18h WORD 0 1Ah 8 BYTEs (high byte first) TP_ID 22h DWORD -> CREATE_TP record (only if verb = 2900h) --------------------------------------------- INT 68 - APPC/PC - TRANSFER MSG DATA AH = 05h DS:DX -> control block (see below) Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD 1C00h 0Eh BYTE 00h user defined 01h NMVT 02h alert subvectors 03h PDSTATS subvectors 0Fh 5 BYTEs 0 14h DWORD (high byte first) return code (see AH=01h) 18h 12 BYTEs 0 24h BYTE if bit 0 clear, add correlation subvector if bit 1 clear, add product set ID subvector if bit 2 clear, do SYSLOG if bit 3 clear, send SSCP_PU_SESSION 25h BYTE 0 26h WORD length of data 28h N BYTEs data --------------------------------------------- INT 68 - APPC/PC - CHANGE NUMBER OF SESSIONS AH = 06h DS:DX -> control block (see below) Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD 1500h 0Eh 6 BYTEs 0 14h WORD (high byte first) primary return code (see AH=02h) 16h DWORD (high byte first) secondary return code (see below, AH=01h) 1Ah 8 BYTEs (high byte first) logical unit ID 22h 8 BYTEs blanks 2Ah 8 BYTEs (high byte first) partner logical unit name 32h 8 BYTEs (high byte first) mode name 3Ah BYTE bit 7: use MODE_NAME_SELECT_ALL rather than MODE_NAME bit 6: set negotiable values 3Bh BYTE partner logical unit mode session limit 3Ch BYTE minimum CONWINNERS_SOURCE 3Dh BYTE maximum CONWINNERS_TARGET 3Eh BYTE automatic activation 3Fh BYTE 0 40h BYTE bit 7: drain target bit 6: drain source bit 5: target responsible, not source Values for secondary return code (see also AH=01h): 0000h accepted 0001h negotiated 0003h bad logical unit ID 0004h allocation failure, no retry 0005h allocation failure, retry 0151h can't raise limits 0153h all modes must reset 0154h bad SNASVCMG limits 0155h minimum greater than total 0156h mode closed (prim return code = 1) CNOS mode closed (prim return code = 18h) 0157h bad mode name (prim return code = 1) CNOS bad mode name (prim return code = 18h) 0159h reset SNA drains 015Ah single not SRC response 015Bh bad partner logical unit 015Ch exceeds maximum allowed 015Dh change SRC drains 015Eh logical unit detached 015Fh CNOS command race reject --------------------------------------------- INT 68 - APPC/PC - PASSTHROUGH AH = 07h DS:DX -> control block (format depends on application subsystem) --------------------------------------------- INT 68 - APPC/PC - ENABLE/DISABLE APPC AH = FAh AL bit 0 = 0 enable 1 disable --------------------------------------------- INT 68 - APPC/PC - CONVERT AH = FBh DS:DX -> control block (see below) Format of control block: Offset Size Description 00h 12 BYTEs reserved 0Ch WORD 1A00h 0Eh 6 BYTEs 0 14h DWORD (high byte first) return code 18h BYTE conversion 00h ASCII to EBCDIC 01h EBCDIC to ASCII 19h BYTE character set 00h AE 01h A 02h G 1Ah WORD length of string to convert 1Ch DWORD pointer to source 20h DWORD pointer to target --------------------------------------------- INT 68 - APPC/PC - ENABLE/DISABLE MESSAGE TRACING AH = FCh AL = 00h disable tracing = 01h enable tracing DX = number of bytes to keep (0=all) --------------------------------------------- INT 68 - APPC/PC - ENABLE/DISABLE API VERB TRACING AH = FDh AL = 00h disable tracing 01h enable tracing --------------------------------------------- INT 68 - APPC/PC - SET TRACE DESTINATION AH = FEh AL = trace destinations bit 0 storage (DS:DX -> trace stats record) bit 1 display bit 2 file (trace written to file OUTPUT.PC) bit 3 printer Format of Trace Statistics Record: Offset Size Description 00h DWORD pointer to storage trace buffer 04h WORD max number of 80-byte records in trace 06h WORD (high-order byte first!) current record number (must init to 0) 08h DWORD (high-order byte first!) number of records written (init to 0) 0Ch DWORD reserved Note: do not move record while trace is active --------------------------------------------- INT 68 - APPC/PC - SET PASSTHROUGH AH = FFh DS:DX -> passthrough exit routine --------------------------------------------- INT 69 - unused --------------------------------------------- INT 6A - OPTHELP.COM Notes: OPTHELP is an optionally-resident help system for SLR Systems's OPTASM assembler may be configured to use any interrupt from 60h to 7Fh --------------------------------------------- INT 6B - unused --------------------------------------------- INT 6C - system resume vector (CONVERTIBLE) --------------------------------------------- INT 6C - DOS 3.2 Realtime Clock update --------------------------------------------- INT 6D - VGA - internal Note: used by IBM, Paradise, Video7, and NCR --------------------------------------------- INT 6E - unused --------------------------------------------- INT 6F - HP ES-12 EXTENDED BIOS - READ CMOS MEMORY BP = 0012h AH = 22h BL = address of CMOS byte to read Return: AH = status AL = byte read BP, DS destroyed --------------------------------------------- INT 6F - HP ES-12 EXTENDED BIOS - WRITE CMOS MEMORY BP = 0012h AH = 24h BL = address of CMOS byte to write AL = new value Return: AH = status BP, DS destroyed --------------------------------------------- INT 6F - Novell NetWare - PCOX API (3270 PC terminal interface) --------------------------------------------- INT 6F - 10-NET - LOGIN AH = 00h DS:DX -> login record 8 BYTEs user name 8 BYTEs password 12 BYTEs name of SuperStation Return: CL = security level AX = status 0000h successful 01FFh time out on response 02FFh network (hardware) error 03FFh invalid password 04FFh local rexource not available 05FFh server resource not available 06FFh already logged in under different name 07FFh login security failure (node) 08FFh not logged in 09FFh position calc error 0AFFh receive subfunction not = send subfunction (i.e. read, write) 0BFFh request function not in range 0CFFh no more server file handle entries left 0DFFh no more shared file table entries left 0EFFh no more user file handle entries left 0FFFh chat permit not on 10FFh not a server on request 11FFh no transporter board error 12FFh time out on send 13FFh item not found (spool item not on queue) 14FFh dos access incompatible 15FFh record already locked 16FFh invalid parameter 17FFh record lock time out error 18FFh currently spooling to named device 19FFh dropped receive message (throttle) 1AFFh open sharing violation 1BFFh no more tuf entries left 1CFFh not file owner on open 1DFFh read security not passed 1EFFh write security not passed 1FFFh group security not passed 20FFh security file failure 21FFh activity file failure 22FFh spool cntrl file failure 23FFh device not mounted (spooling) 24FFh spool file has not been terminated 25FFh device not mounted or is not being shared 26FFh duplicate node id 27FFh file not found error 28FFh no more files 29FFh unknown internal system error 2AFFh print queue is full or corrupted 2BFFh invalid function 2CFFh invalid handle 2DFFh too many files opened 2EFFh path not found 2FFFh named file is active /* I've gotten one submission which says FFxxh, and another with xxFFh */ /* I don't know which way around these should be, does somebody else know? */ FF01h timeout FF02h network error FF03h invalid password FF04h no local buffer FF05h superstation not available FF06h node already logged in FF07h login not valid from this node FF08h node ID already in use FF16h invalid parameter (bad length, invalid node ID, etc) FF17h record locked by another user FF18h sent message has been dropped --------------------------------------------- INT 6F - 10-NET - LOGOFF AH = 01h DS:DX -> superstation ID or nulls (12 bytes) Return: CX = number of files closed AX = status (see AH=00h) FF08h superstation ID not already logged in --------------------------------------------- INT 6F - 10-NET - STATUS OF NODE AH = 02h DS:DX -> 512-byte status record (see below) Return: CF set on error AX = error code (see AH=00h) Format of node status record: Offset Size Description 00h 8 BYTEs user name (0 if none) 08h BYTE station type 00h workstation 01h superstation 02h gateway station 03h gateway active 04h logged into multiple superstations 05h reserved 09h 24 BYTEs list of superstations logged into more than one superstation 21h 12 BYTEs node ID 2Dh WORD message count for this station (send for user node, receive for superstations) ---for superstations only--- 2Fh WORD drives allocated (bit 0=A:, bit 1=B:,...) 31h BYTE user service flag bit 7: gate 6: print permit on 4: SUBMIT is on 3: mail waiting for node 2: calendar waiting for you 1: news waiting for you 0: mail waiting for you 32h BYTE printers allocated (bit 0=LPT1,...) 33h BYTE number of unprinted spool files 34h BYTE number of opened files 35h BYTE number of logged on nodes 36h BYTE primary drive (1=A:) 37h BYTE reserved 38h N BYTEs list of logged on node IDs (each 12 bytes, max 37 IDs) 1F4h 3 BYTEs time: sec/min/hrs 1F7h 3 BYTEs date: day/mon/year-1980 --------------------------------------------- INT 6F - 10-NET - GET ADDRESS OF CONFIGURATION TABLE AH = 03h DS:DI -> node ID (optional) Return: ES:BX -> configuration table Format of configuration table: Offset Size Description -41 WORD local device table address -39 WORD extended network error mapping table address -37 WORD shared device table address -35 WORD mounted device table address -33 BYTE receive buffer counter -32 BYTE collect buffer counter -31 WORD TUF address -29 BYTE enable flag -28 BYTE FCB keep flag -27 WORD reserved ---up to here, 10-Net v3.3--- -25 WORD count of dropped Send6F -23 WORD buffer start address -21 WORD comm driver base address -19 WORD send/receive retry count -17 BYTE number of 550ms loops before timeout -16 WORD UFH address -14 WORD CDIR address -12 WORD LTAB address -10 WORD SFH address -8 WORD FTAB address -6 WORD RLTAB address -4 WORD SMI address -2 WORD NTAB address 00h WORD address of first CT_DRV 02h BYTE number of DRV entries 03h 8 BYTEs login name 0Bh 12 BYTEs node ID (blank-padded) 17h 6 BYTEs node address 1Dh BYTE flag 1Eh BYTE CT_CFLG (chat permit) bit 1: sound bell bit 0: CHAT permit 1Fh BYTE CT_PSFLG bit 5: PRINT permit bit 4: KB initiated bit 3: CHAT called FOXPTRM bit 2: SUBMIT active bit 1: SUBMIT received bit 0: SUBMIT permit 20h BYTE in 10Net flag 21h WORD receive message count 23h WORD send message count 25h WORD retry count 27h WORD failed count 29h WORD driver errors 2Bh WORD dropped responses/CHATs 2Dh 9 BYTEs LIST ID/NTAB address (3 entries--LPT1-3) 36h 6 BYTEs AUX ID/NTAB address (2 entries--COM1-2) 3Ch BYTE active CB channel 3Dh BYTE received 6F messages on queue 3Eh 9 BYTEs activity counters for channels 1-9 ---beyond here, 10-Net v3.3--- 47h BYTE bit 0 = RS232 gate 1 = Send6F gate (user set) 48h DWORD pointer into gate (user set) 4Ch DWORD pointer into 10Net send 50h N WORDs addresses of timer blocks --------------------------------------------- INT 6F - 10-NET - SEND AH = 04h DS:BX -> record 12 BYTEs receiving node's ID if first byte has high-order bit set, message is directed to the CT_RGATE vector at the receiver if second byte is 00h, first byte is taken as a CB channel number and delivered to all nodes on same channel WORD length of data at DX DS:DX -> data (max 1024 bytes) Return: CF set on error AX = error code (see AH=00h) --------------------------------------------- INT 6F - 10-NET - RECEIVE AH = 05h CX = number of seconds before timeout DS:DX -> receive buffer (see below) Return: CF set on error AX = error code (see AH=00h) CF clear if successful AH = FEh if dequeued message is a CB message Format of receive buffer: Offset Size Description 00h 12 BYTEs sending node's ID 0Ch WORD length of message 0Eh N BYTEs message (maximum 1024 bytes) --------------------------------------------- INT 6F - 10-NET - LOCK HANDLE AH = 07h BX = file handle CX:DX = starting offset in file SI = record length Return: CF set on error AX = error code (see also AH=00h) 0002h file not found --------------------------------------------- INT 6F - 10-NET - UNLOCK HANDLE AH = 08h BX = file handle AL = mode 00h unlock all 01h unlock record at CX:DX Return: CF set on error AX = error code (see also AH=00h) 0002h file not found --------------------------------------------- INT 6F - 10-NET - SUBMIT AH = 09h DS:BX -> submit record (see below) Format of submit record: Offset Size Description 00h 12 BYTEs destination node ID (must be logged in) 0Ch WORD length+2 of following 'command line' text 0Eh N BYTEs command line text (<=100 bytes), system adds CR --------------------------------------------- INT 6F - 10-NET - CHAT AH = 0Ah DS:BX -> control parameters (see below) DS:DX -> chat message (see below) Format of control parameters: Offset Size Description 00h 8 BYTEs sender ID, defaults to node's userID if nulls 08h 8 BYTEs destination user ID, 'EVERYONE' may be used 10h 12 BYTEs destination node ID Format of chat message: Offset Size Description 00h WORD length+2 of following text 02h N BYTEs text, max 101 bytes --------------------------------------------- INT 6F - 10-NET - LOCK SEMAPHORE, RETURN IMMEDIATELY AH = 0Bh AL = drive number or 0 ES:SI = Ethernet address or 0 DS:BX -> 31-byte ASCIZ semaphore name Return: AL = status 00h successful 01h semaphore currently locked 02h server not responding 03h invalid semaphore name 04h semaphore list is full 05h invalid drive ID 06h invalid Ethernet address 07h not logged in 08h write to network failed 09h semaphore already logged in this CPU Note: same as INT 60/AH=12h --------------------------------------------- INT 6F - 10-NET - UNLOCK SEMAPHORE AH = 0Ch AL = drive number or 0 ES:SI = Ethernet address or 0 DS:BX -> 31-byte ASCIZ semaphore name Return: AL = status (see also AH=0Bh) 01h semaphore not locked Note: same as INT 60/AH=13h --------------------------------------------- INT 6F - 10-NET - WHO AH = 0Dh AL = type code 01h return superstations only 02h return non-superstations only otherwise return all CX = length of data DS:DX -> array of records to be filled (see below) Return: CL = number of records returned (responding stations) Format of station record: Offset Size Description 00h 12 BYTEs node ID 0Ch BYTE flags bit 1 = workstation 2 = superstation 3 = xgate 4 = active gate ---if AL = 01h--- 0Dh BYTE version number WORD level number of 10Net software in responding node ---if AL = 02h--- 0Dh 8 BYTEs user ID 15h BYTE version number 16h WORD level number --------------------------------------------- INT 6F - 10-NET - SPOOL/PRINT AH = 0Eh DS:DX -> spool/print record (see below) Return: CF set on error AX = error code (see also AH=00h) FF17h device not mounted FF18h already spooling to named device Format of Spool/Print record: Offset Size Description 00h WORD operation code 00h initiate spool 01h abort print 02h close spool 03h delete spool 04h print 05h get report info 06h set chat template 07h queue 08h return queue 09h queue non-spooled file for printing 02h 11 BYTEs file name in FCB format ---if operation code = 00h or 06h--- 0Dh BYTE notification bit 7: queue to top bit 6: do ID page bit 5: no form feed bit 4: reserved bit 3: explicity queuing only bit 2: notify at print completion bit 1: notify server operator/reply bit 0: notify at print start 0Eh BYTE days to keep (FFh=forever) 0Fh BYTE bits 0,1: device (1=LPT1) bits 4-7: remote drive to store spool file (1=A,...) 10h WORD length of following data area 12h N BYTEs up to 64 bytes of description ---if operation code = 03h--- 0Dh 8 BYTEs user ID to associate with filename ---if operation code = 04h--- 0Dh WORD block number 0Fh 8 BYTEs user ID to associate with filename ---if operation code = 05h--- 0Dh BYTE RRN to start retrieve 0Eh BYTE bits 0,1: local print device (LPTx) bit 3: if set, return entries for all users 0Fh WORD length of following area 11h N BYTEs up to 1500 bytes to receive $SCNTL records returned ---if operation code = 07h--- 0Dh BYTE queue number 0Eh BYTE bits 0,1: local print device (LPTx) 0Fh WORD number of bytes of test print to be done 11h BYTE code: 01h print device 02h test print count 03h prn ---if operation code = 08h--- 0Dh BYTE queue location or $SCNTL location to start access returns next item for access: 00h-7Fh queued items 80h-FEh non-queued, non-printed items FFh no more items 0Eh WORD unused 10h WORD length of following area 12h N BYTEs up to 64 bytes to receive $SCNTL records ---if operation code = 09h--- 0Dh 3 BYTEs unused 10h N BYTEs path to non-spooled file to be queued for printing Format of $SCNTL record: Offset Size Description 00h 8 BYTEs user ID 08h 11 BYTEs filename in FCB format 13h 6 BYTEs node ID 19h 3 BYTEs creation date 1Ch BYTE flags bit 7: queue to top 6: do ID page 5: no form feed at end 4: reserved 3: explicit queueing only 2: notify at completion 1: notify server operator/reply 0: notify at start 1Dh BYTE retention time in days 1Eh BYTE printing device (LPTx) 1Fh 3 BYTEs date last printed (0 = never) 22h BYTE device containing spoolfile 23h WORD bytes to print for test print 25h WORD block number to start print 27h BYTE reserved --------------------------------------------- INT 6F - 10-NET - ATTACH/DETACH PRINTER AH = 10h AL = subfunction 00h initiate spooling if LPT1 is mounted 01h terminate spooling if LPT1 is mounted --------------------------------------------- INT 6F - 10-NET - LOCK FCB AH = 11h AL = mode 01h sequential 02h random 03h random block CX = number of records DS:DX -> FCB Return: CF set on error AX = error code (see also AH=00h) 2 file not found --------------------------------------------- INT 6F - 10-NET - UNLOCK FCB AH = 12h AL = mode 00h sequential 01h random 02h random block CX = number of records DS:DX -> FCB Return: CF set on error AX = error code (see also AH=00h) 2 file not found --------------------------------------------- INT 6F - 10-NET v3.3 - GET REMOTE CONFIGURATION TABLE ADDRESS AH = 13h DS:DX -> node ID, 12 bytes blank-padded Return: CF set on error AX = error code (see AH=00h) CF clear if successful ES:BX = configuration table address on given machine --------------------------------------------- INT 6F - 10-NET v3.3 - GET REMOTE MEMORY AH = 14h BX:SI = address of remote memory CX = length (<=1024 bytes) DS:DX -> node ID, 12 bytes blank-padded DS:DI -> area to receive remote memory image Return: CF set on error AX = error code (see AH=00h) CF clear if successful CX = amount of memory copied to DS:SI --------------------------------------------- INT 6F - 10-NET v3.3 - GET SHARED DEVICE ENTRY AX = 1501h BX = zero-based index DS:SI -> node ID, 12 bytes blank-padded ES:DI -> 85-byte buffer for shared device table entry (see below) Return: CF set on error AX = error code (see AH=00h) CF clear if successful ES:DI buffer contains shared device table entry of BXth device: Format of shared device table entry: Offset Size Description 00h 8 BYTEs device 08h 8 BYTEs alias 10h 64 BYTEs path 50h 8 BYTEs password 58h BYTE access 59h 4 BYTEs mask --------------------------------------------- INT 6F - 10-NET v3.3 - SET SHARED DEVICE ENTRY AX = 1502h DS:SI -> node ID, 12 bytes blank-padded ES:DI -> valid shared device table entry Return: CF set on error AX = error code (see AH=00h) --------------------------------------------- INT 6F - 10-NET v3.3 - DELETE SHARED DEVICE ENTRY AX = 1503h BX = zero-based index DS:SI -> node ID, 12 bytes blank-padded Return: CF set on error AX = error code (see AH=00h) --------------------------------------------- INT 6F - 10-NET v3.3 - MOUNT AH = 17h AL = local drive number (0=A:) BL = remote drive letter or '1'..'3' for LPTn or '4' or '5' for COMx DS:DX -> node ID, 12 bytes blank-padded Return: CF set on error AX = error code (see AH=00h) --------------------------------------------- INT 6F - 10-NET v3.3 - UNMOUNT AH = 18h AL = local drive number (0=A:) BL = type 00h disk 01h-03h LPTn 04h,05h COMx Return: CF set on error AX = error code (see AH=00h) --------------------------------------------- INT 70 - IRQ8 - AT/XT286/PS50+ - REAL-TIME CLOCK --------------------------------------------- INT 71 - IRQ9 - AT/XT286/PS50+ - LAN ADAPTER 1 rerouted to INT 0A by BIOS --------------------------------------------- INT 72 - IRQ10 - AT/XT286/PS50+ - RESERVED --------------------------------------------- INT 73 - IRQ11 - AT/XT286/PS50+ - RESERVED --------------------------------------------- INT 74 - IRQ12 - PS50+ - MOUSE INTERRUPT --------------------------------------------- INT 75 - IRQ13 - AT/XT286/PS50+ - 80287 ERROR rerouted to INT 02 by BIOS --------------------------------------------- INT 76 - IRQ14 - AT/XT286/PS50+ - FIXED DISK --------------------------------------------- INT 77 - IRQ15 - AT/XT286/PS50+ - RESERVED --------------------------------------------- INT 78 - not used --------------------------------------------- INT 79 - not used --------------------------------------------- INT 7A - Novell NetWare - LOW-LEVEL API --------------------------------------------- INT 7A - AutoCAD Device Interface --------------------------------------------- INT 7B - Btrieve API ??? = function 00h open 01h close 02h insert 03h update 04h delete 05h get_equal 06h get_next 07h get_prev 08h get_greater 09h get_gr_eql 0Ah get_less 0Bh get_less_eq 0Ch get_first 0Dh get_last 0Eh create 0Fh stat 10h extend 11h set_dir: set directory information 12h get_dir: get directory information 13h begin_trans 14h end_trans 15h abort_trans 16h get_pos: get record position number 17h get_direct: get data by sending record position 18h step_direct 19h stop 1Ah version 1Bh unlock 1Ch reset Return: ??? Note: Btrieve sets low byte of vector to 33h; this serves as the installation check --------------------------------------------- INT 7C - not used --------------------------------------------- INT 7D - not used --------------------------------------------- INT 7E - not used --------------------------------------------- INT 7F - HDILOAD.EXE - 8514/A VIDEO CONTROLLER INTERFACE ??? --------------------------------------------- INT 7F - HLLAPI (High-Level Language API) ??? -> parameter control block Return: ??? Format of parameter control block: Offset Size Description 00h 3 BYTEs signature = 'PCB' 03h BYTE function number 04h WORD segment of control string 06h WORD offset of control string 08h WORD length of control string, unless explicit end-of-str char set 0Ah BYTE unused 0Bh WORD return code 0Dh WORD maximum length of control string Functions: 00h Query system (Attachmate implementation only) 01h Connect presentation space 02h Disconnect presentation space 03h Send string of keystrokes as if typed from keyboard 04h Wait ~60s, returns status of presentation space 05h Copy current presentation space into a user-defined buffer 06h Search presentation space for first occurrence of a specified string 07h Query cursor location in current presentation space 08h Copy part or all of current presentation space into user buffer 09h Set session parameters; parameters vary by vendor 0Ah Get info on sessions currently connected 0Bh Lock current presentation space 0Ch Unlock previously locked presentation space 0Dh Return copy of operator info area (OIA) of current presentation space 0Eh get attribute byte for given position in the current presentation space 0Fh copy string of characters to the current presentation space 10h workstation control functions 11h storage manager functions, intended primarily for BASIC applications 12h set delay period in half-second intervals 14h get info on level of workstation support used 15h reset session parameters to default values 16h get detailed info on the current session 17h start host notification to application on presentation sp or OIA update 18h check host update when host notification enabled 19h stop host notification 1Eh search field within current presentation space for string 1Fh get first positionof a selected field in the current presentation space 20h get length of specified field 21h copy string into a specified field 22h copy specified field into a user-defined buffer 23h create alternate presentation space (IBM only), don't use with BASIC 24h switch to alternate presentation space (IBM only), not with BASIC 25h display cursor in specified area (IBM only), don't use with BASIC 26h display alternate presentation space (IBM only), don't use with BASIC 27h delete alternate presentation space (IBM only), don't use with BASIC 32h start intercepting keystrokes to allow filtering 33h get keystrokes after turning on interception 34h notify operator when keystroke rejected by filter subroutine 35h stop intercepting keystrokes 5Ah send file 5Bh receive file 5Ch run a program 5Dh execute DOS command 63h change presentation space position to PC display row/col or vice versa FFh Get info on DCA implementation Session Parameters for function 09h: ATTRIB return attributes in hex NOATTRIB return attributes as blanks CONPHYS make physical connection CONLOG only make logical connection EAB copy extended attribute bytes along with data NOEAB copy data only ESC=n set escape character to "n" (default '@') EOT=n set end of string character (default 00h) FPAUSE full-duration pause IPAUSE interruptible pause STRLEN use explicit string lengths STREOT use terminated strings SRCHALL search entire presentation space SRCHFROM search from specified offset SRCHFRWD search forward from position 1 SRCHBKWD search backward from last position in presentation space TWAIT wait specified time for keyboard ready LWAIT wait until keyboard ready NWAIT no wait TRON enable tracing TROFF disable tracing AUTORESET send reset before sending keys with function 03h NORESET don't send reset QUIET don't display messages sent with INT 21/AH=9 NOQUIET allow messages to be displayed TIMEOUT=n set timeout in 30-second intervals, 0 = wait until ^Break XLATE translate extended attribute bytes NOXLATE don't translate NEWRET use HLLAPI v3.0 return code conventions OLDRET use HLLAPI v2.0 return code conventions --------------------------------------------- INT 80 - reserved for BASIC --------------------------------------------- INT 81 - reserved for BASIC --------------------------------------------- INT 82 - reserved for BASIC --------------------------------------------- INT 83 - reserved for BASIC --------------------------------------------- INT 84 - reserved for BASIC --------------------------------------------- INT 85 - reserved for BASIC --------------------------------------------- INT 86 - Relocated (by NETBIOS) INT 18 --------------------------------------------- INT 86 - used by BASIC while in interpreter --------------------------------------------- INT 87 - used by BASIC while in interpreter --------------------------------------------- INT 88 - used by BASIC while in interpreter --------------------------------------------- INT 89 - used by BASIC while in interpreter --------------------------------------------- INT 8A - used by BASIC while in interpreter --------------------------------------------- INT 8B - used by BASIC while in interpreter --------------------------------------------- INT 8C - used by BASIC while in interpreter --------------------------------------------- INT 8D - used by BASIC while in interpreter --------------------------------------------- INT 8E - used by BASIC while in interpreter --------------------------------------------- INT 8F - used by BASIC while in interpreter --------------------------------------------- INT 90 - used by BASIC while in interpreter --------------------------------------------- INT 91 - used by BASIC while in interpreter --------------------------------------------- INT 92 - used by BASIC while in interpreter --------------------------------------------- INT 93 - used by BASIC while in interpreter --------------------------------------------- INT 94 - used by BASIC while in interpreter --------------------------------------------- INT 95 - used by BASIC while in interpreter --------------------------------------------- INT 96 - used by BASIC while in interpreter --------------------------------------------- INT 97 - used by BASIC while in interpreter --------------------------------------------- INT 98 - used by BASIC while in interpreter --------------------------------------------- INT 99 - used by BASIC while in interpreter --------------------------------------------- INT 9A - used by BASIC while in interpreter --------------------------------------------- INT 9B - used by BASIC while in interpreter --------------------------------------------- INT 9C - used by BASIC while in interpreter --------------------------------------------- INT 9D - used by BASIC while in interpreter --------------------------------------------- INT 9E - used by BASIC while in interpreter --------------------------------------------- INT 9F - used by BASIC while in interpreter --------------------------------------------- INT A0 - used by BASIC while in interpreter --------------------------------------------- INT A1 - used by BASIC while in interpreter --------------------------------------------- INT A2 - used by BASIC while in interpreter --------------------------------------------- INT A3 - used by BASIC while in interpreter --------------------------------------------- INT A4 - used by BASIC while in interpreter --------------------------------------------- INT A4 - Right Hand Man API function number in AH Note: Right-Hand Man is a TSR desk-top utility, and only hooks this interrupt while popped up --------------------------------------------- INT A5 - used by BASIC while in interpreter --------------------------------------------- INT A6 - used by BASIC while in interpreter --------------------------------------------- INT A7 - used by BASIC while in interpreter --------------------------------------------- INT A8 - used by BASIC while in interpreter --------------------------------------------- INT A9 - used by BASIC while in interpreter --------------------------------------------- INT AA - used by BASIC while in interpreter --------------------------------------------- INT AB - used by BASIC while in interpreter --------------------------------------------- INT AC - used by BASIC while in interpreter --------------------------------------------- INT AD - used by BASIC while in interpreter --------------------------------------------- INT AE - used by BASIC while in interpreter --------------------------------------------- INT AF - used by BASIC while in interpreter --------------------------------------------- INT B0 - through BF - used by BASIC while in interpreter --------------------------------------------- INT C0 - used by BASIC while in interpreter --------------------------------------------- INT C1 - used by BASIC while in interpreter --------------------------------------------- INT C2 - used by BASIC while in interpreter --------------------------------------------- INT C3 - used by BASIC while in interpreter --------------------------------------------- INT C4 - used by BASIC while in interpreter --------------------------------------------- INT C5 - used by BASIC while in interpreter --------------------------------------------- INT C6 - used by BASIC while in interpreter --------------------------------------------- INT C7 - used by BASIC while in interpreter --------------------------------------------- INT C8 - used by BASIC while in interpreter --------------------------------------------- INT C9 - used by BASIC while in interpreter --------------------------------------------- INT CA - used by BASIC while in interpreter --------------------------------------------- INT CB - used by BASIC while in interpreter --------------------------------------------- INT CC - used by BASIC while in interpreter --------------------------------------------- INT CD - used by BASIC while in interpreter --------------------------------------------- INT CE - used by BASIC while in interpreter --------------------------------------------- INT CF - used by BASIC while in interpreter --------------------------------------------- INT D0 - used by BASIC while in interpreter --------------------------------------------- INT D1 - used by BASIC while in interpreter --------------------------------------------- INT D2 - used by BASIC while in interpreter --------------------------------------------- INT D3 - used by BASIC while in interpreter --------------------------------------------- INT D4 - used by BASIC while in interpreter --------------------------------------------- INT D5 - used by BASIC while in interpreter --------------------------------------------- INT D6 - used by BASIC while in interpreter --------------------------------------------- INT D7 - used by BASIC while in interpreter --------------------------------------------- INT D8 - used by BASIC while in interpreter --------------------------------------------- INT D9 - used by BASIC while in interpreter --------------------------------------------- INT DA - used by BASIC while in interpreter --------------------------------------------- INT DB - used by BASIC while in interpreter --------------------------------------------- INT DC - used by BASIC while in interpreter --------------------------------------------- INT DD - used by BASIC while in interpreter --------------------------------------------- INT DE - used by BASIC while in interpreter --------------------------------------------- INT DF - used by BASIC while in interpreter --------------------------------------------- INT E0 - CP/M-86 function calls --------------------------------------------- INT E0 - used by BASIC while in interpreter --------------------------------------------- INT E1 - used by BASIC while in interpreter --------------------------------------------- INT E2 - used by BASIC while in interpreter --------------------------------------------- INT E3 - used by BASIC while in interpreter --------------------------------------------- INT E4 - Logitech Modula v2.0 - MonitorEntry AX = 0005h BX = priority --------------------------------------------- INT E4 - Logitech Modula v2.0 - MonitorExit AX = 0006h --------------------------------------------- INT E4 - used by BASIC while in interpreter --------------------------------------------- INT E5 - used by BASIC while in interpreter --------------------------------------------- INT E6 - used by BASIC while in interpreter --------------------------------------------- INT E7 - used by BASIC while in interpreter --------------------------------------------- INT E8 - used by BASIC while in interpreter --------------------------------------------- INT E9 - used by BASIC while in interpreter --------------------------------------------- INT EA - used by BASIC while in interpreter --------------------------------------------- INT EB - used by BASIC while in interpreter --------------------------------------------- INT EC - used by BASIC while in interpreter --------------------------------------------- INT ED - used by BASIC while in interpreter --------------------------------------------- INT EE - used by BASIC while in interpreter --------------------------------------------- INT EF - used by BASIC while in interpreter --------------------------------------------- INT EF - GEM - INTERFACE CX = 0473h DS:DX -> GEM parameter block --------------------------------------------- INT F0 - used by BASIC while in interpreter --------------------------------------------- INT F1 - reserved for user interrupt --------------------------------------------- INT F2 - reserved for user interrupt --------------------------------------------- INT F3 - reserved for user interrupt --------------------------------------------- INT F4 - reserved for user interrupt --------------------------------------------- INT F5 - reserved for user interrupt --------------------------------------------- INT F6 - reserved for user interrupt --------------------------------------------- INT F7 - reserved for user interrupt --------------------------------------------- INT F8 - 10 ms INTERVAL TIMER (TANDY???) --------------------------------------------- INT F9 - reserved for user interrupt --------------------------------------------- INT FA - USART READY (RS-232C) (TANDY???) --------------------------------------------- INT FB - USART Rx READY (keyboard) (TANDY???) --------------------------------------------- INT FC - reserved for user interrupt --------------------------------------------- INT FD - reserved for user interrupt --------------------------------------------- INT FE - AT/XT286/PS50+ - destroyed by return from protected mode --------------------------------------------- INT FF - AT/XT286/PS50+ - destroyed by return from protected mode --------------------------------------------- INT FF - Z100 - WARM BOOT --------------------------------------------- Please redistribute the following files unmodified as a group, in an archive named INTER489: INTERRUP.1ST the read-me file, containing credits, availability info INTERRUP.A INT 00 through INT 27 INTERRUP.B INT 28 through INT FF INTERRUP.PRI a brief introduction to interrupts INTPRINT.COM a simple formatter that also generates the list summary INTPRINT.DOC instructions for INTPRINT INTPRINT.C source code for INTPRINT --------------------------------------------- ARPA: ralf@cs.cmu.edu \ UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf > preferred BIT: ralf%cs.cmu.edu@cmuccvb / FIDO: Ralf Brown 1:129/46 (new address!) or post a message to the DR_DEBUG echo