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INTERRUP.J
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Interrupt List, part 10 of 15
Copyright (c) 1989,1990,1991,1992,1993,1994,1995,1996 Ralf Brown
--------m-2F4300-----------------------------
INT 2F - EXTENDED MEMORY SPECIFICATION (XMS) v2+ - INSTALLATION CHECK
AX = 4300h
Return: AL = 80h XMS driver installed
AL <> 80h no driver
Notes: XMS gives access to extended memory and noncontiguous/nonEMS memory
above 640K
this installation check DOES NOT follow the format used by other
software
SeeAlso: AX=4310h
Index: installation check;XMS version 2+
--------m-2F4308-----------------------------
INT 2F U - HIMEM.SYS v2.77+ - GET A20 HANDLER NUMBER
AX = 4308h
Return: AL = 43h if supported
BL = A20 handler number (value of /MACHINE:nn switch)
BH = AT A20 switch time (00h medium, 01h fast, 02h slow)
Note: if the A20 handler number returned in BL is 00h, an external handler
is being used (see AX=4330h)
SeeAlso: AX=4309h,AX=4330h
--------m-2F4309-----------------------------
INT 2F U - HIMEM.SYS v3.09+ - GET XMS HANDLE TABLE
AX = 4309h
Return: AL = 43h if function supported
ES:BX -> XMS handle table (see #1976)
Note: HIMEM.SYS v3.09 is part of MS-DOS 6.0.
SeeAlso: AX=4308h
Format of XMS handle table:
Offset Size Description (Table 1976)
00h BYTE ??? (01h in HIMEM.SYS v3.09)
01h BYTE size of one handle descriptor
02h WORD number of handles (default = 20h)
04h DWORD pointer to XMS handle array (see #1977)
SeeAlso: #2006
Format of XMS handle descriptor [array]:
Offset Size Description (Table 1977)
00h BYTE flag
01h=free, 02h=used, 04h=in pool but not associated with any EMB
01h BYTE lock count (00h=unlocked)
02h DWORD address of XMS block in KB (shift left by 10 for abs. address)
06h DWORD size of XMS block in KB
--------m-2F4310-----------------------------
INT 2F - EXTENDED MEMORY SPECIFICATION (XMS) v2+ - GET DRIVER ADDRESS
AX = 4310h
Return: ES:BX -> driver entry point (see #1978,#1979,#1982,#1989,#1998,#2003)
Notes: HIMEM.SYS v2.77 chains to previous handler if AH is not 00h or 10h
HIMEM.SYS requires at least 256 bytes free stack space when calling
the driver entry point
SeeAlso: AX=4300h,AX=4310h"Cloaking",AX=4310h"Netroom",AX=4310h"XMZ"
Format of XMS driver entry point:
Offset Size Description (Table 1978)
00h 5 BYTEs jump to actual handler
either short jump (EBh XXh) followed by three NOPs or
far jump (EAh XXXX:XXXX) to a program which has hooked itself
into the XMS driver chain
Note: to hook into the XMS driver chain, a program should follow the chain of
far jumps until it reaches the short jump of the driver at the end
of the chain; this short jump is to be replaced with a far jump to
the new handler's entry point, which should contain a short jump
followed by three NOPs. The new handler must return to the address
pointed at by the short jump which was overwritten. Using this
method, the new handler becomes the first to see every XMS request.
(Table 1979)
Call the XMS driver "Get XMS version number" function with:
AH = 00h
Return: AX = XMS version (in BCD, AH=major, AL=minor)
BX = internal revision number (in BCD for HIMEM.SYS)
DX = High Memory Area (HMA) state
0001h HMA (1M to 1M + 64K) exists
0000h HMA does not exist
SeeAlso: #1980,#1981,#1986,#1987,#1993
(Table 1980)
Call the XMS driver "Request High Memory Area" function with:
AH = 01h
DX = memory in bytes (for TSR or device drivers)
FFFFh if application program
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,90h,91h,92h) (see #2004)
Note: HIMEM.SYS will fail function 01h with error code 91h if AL=40h and
DX=KB free extended memory returned by last call of function 08h
SeeAlso: #1981,#2013
(Table 1981)
Call the XMS driver "Release High Memory Area" function with:
AH = 02h
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,90h,93h) (see #2004)
SeeAlso: #1980
(Table 1982)
Call the XMS driver "Global enable A20, for using the HMA" function with:
AH = 03h
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,82h) (see #2004)
SeeAlso: #1983,#1984
(Table 1983)
Call the XMS driver "Global disable A20" function with:
AH = 04h
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,82h,94h) (see #2004)
SeeAlso: #1982,#1985
(Table 1984)
Call the XMS driver "Local enable A20" function with:
AH = 05h
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,82h) (see #2004)
Note: this function is used for direct access to extended memory
SeeAlso: #1982,#1985
(Table 1985)
Call the XMS driver "Local disable A20" function with:
AH = 06h
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,82h,94h) (see #2004)
SeeAlso: #1983,#1984
(Table 1986)
Call the XMS driver "Query A20 state" function with:
AH = 07h
Return: AX = status
0001h enabled
0000h disabled
BL = error code (00h,80h,81h) (see #2004)
SeeAlso: #1979,#1987
(Table 1987)
Call the XMS driver "Query free extended memory" function with:
AH = 08h
BL = 00h (some implementations leave BL unchanged on success)
Return: AX = size of largest extended memory block in KB
DX = total extended memory in KB
BL = error code (00h,80h,81h,A0h) (see #2004)
Note: this function does not include the HMA in the returned memory sizes
SeeAlso: #1979,#1986,#1988,#2000
(Table 1988)
Call the XMS driver "Allocate extended memory block" function with:
AH = 09h
DX = Kbytes needed
Return: AX = status
0001h success
DX = handle for memory block
0000h failure
BL = error code (80h,81h,A0h) (see #2004)
SeeAlso: #1987,#1990,#1993,#1994,#1995,#2001
(Table 1989)
Call the XMS driver "Free extended memory block" function with:
AH = 0Ah
DX = handle of block to free
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,A2h,ABh) (see #2004)
SeeAlso: #1988,#2001
(Table 1990)
Call the XMS driver "Move extended memory block" function with:
AH = 0Bh
DS:SI -> EMM structure (see #2005)
Return: AX = status
0001h success
0000h failure
BL = error code (80h-82h,A3h-A9h) (see #2004)
Note: if either handle in the EMM structure is 0000h, the corresponding
offset is considered to be an absolute segment:offset address in
directly addressable memory
SeeAlso: #1988,#1991
(Table 1991)
Call the XMS driver "Lock extended memory block" function with:
AH = 0Ch
DX = handle of block to lock
Return: AX = status
0001h success
DX:BX = 32-bit physical address of locked block
0000h failure
BL = error code (80h,81h,A2h,ACh,ADh) (see #2004)
Note: MS Windows 3.x rejects this function for handles allocated after
Windows started
SeeAlso: #1988,#1990,#1992
(Table 1992)
Call the XMS driver "Unlock extended memory block" function with:
AH = 0Dh
DX = handle of block to unlock
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,A2h,AAh) (see #2004)
SeeAlso: #1991
(Table 1993)
Call the XMS driver "Get handle information" function with:
AH = 0Eh
DX = handle for which to get info
Return: AX = status
0001h success
BH = block's lock count
BL = number of free handles left
DX = block size in KB
0000h failure
BL = error code (80h,81h,A2h) (see #2004)
BUG: MS Windows 3.10 acts as though unallocated handles are in use
Note: MS Windows 3.00 has problems with this call
SeeAlso: #1979,#1988,#2002
(Table 1994)
Call the XMS driver "Reallocate extended memory block" function with:
AH = 0Fh
DX = handle of block
BX = new size of block in KB
Return: AX = status
0001h success
0000h failure
BL = error code (80h,81h,A0h-A2h,ABh) (see #2004)
SeeAlso: #1988,#1997
(Table 1995)
Call the XMS driver "Request upper memory block" function with:
AH = 10h
DX = size of block in paragraphs
Return: AX = status
0001h success
BX = segment address of UMB
DX = actual size of block
0000h failure
BL = error code (80h,B0h,B1h) (see #2004)
DX = largest available block
Notes: Upper Memory consists of non-EMS memory between 640K and 1024K
the XMS driver need not implement functions 10h through 12h to be
considered compliant with the standard
under DOS 5+, if CONFIG.SYS contains the line DOS=UMB, then no upper
memory blocks will be available for allocation because all blocks
have been grabbed by MS-DOS while booting
SeeAlso: #1988,#1996,#2014,INT 21/AH=58h"UMB"
(Table 1996)
Call the XMS driver "Release upper memory block" function with:
AH = 11h
DX = segment address of UMB to release
Return: AX = status
0001h success
0000h failure
BL = error code (80h,B2h) (see #2004)
Note: the XMS driver need not implement functions 10h through 12h to be
considered compliant with the standard
SeeAlso: #1989,#1995,#1997
(Table 1997)
Call the XMS v3.0+ driver "Reallocate upper memory block" function with:
AH = 12h
DX = segment address of UMB to resize
BX = new size of block in paragraphs
Return: AX = status
0001h success
0000h failure
BL = error code (80h,B0h,B2h) (see #2004)
DX = maximum available size (RM386)
Note: the XMS driver need not implement functions 10h through 12h to be
considered compliant with the standard
SeeAlso: #1994,#1995,#1996,#2012
(Table 1998)
Call the QEMM v5.11 "???" function with:
AH = 34h (QEMM 5.11 only, undocumented)
???
Return: ???
SeeAlso: #1999
(Table 1999)
Call the QEMM v5.11 "???" function with:
AH = 44h (QEMM 5.11 only, undocumented)
???
Return: ???
SeeAlso: #1998,#2012
(Table 2000)
Call the XMS v3.0 driver "Query free extended memory" function with:
AH = 88h
Return: EAX = largest block of extended memory, in KB
BL = status (00h,80h,81h,A0h) (see #2004)
ECX = physical address of highest byte of memory
(valid even on error codes 81h and A0h)
EDX = total Kbytes of extended memory (0 if status A0h)
BUG: HIMEM v3.03-3.07 crash on an 80286 machine if any of the 8Xh functions
are called
SeeAlso: #1987,#2001
(Table 2001)
Call the XMS v3.0 driver "Allocate any extended memory" function with:
AH = 89h
EDX = Kbytes needed
Return: AX = status
0001h success
DX = handle for allocated block (free with AH=0Ah) (see #1989)
0000h failure
BL = status (80h,81h,A0h,A1h,A2h) (see #2004)
SeeAlso: #1988,#2000
(Table 2002)
Call the XMS v3.0 driver "Get extended EMB handle information" function with:
AH = 8Eh
DX = handle
Return: AX = status
0001h success
BH = block's lock count
CX = number of free handles left
EDX = block size in KB
0000h failure
BL = status (80h,81h,A2h) (see #2004)
BUG: MS-DOS 6.0 HIMEM.SYS leaves CX unchanged
SeeAlso: #1993,#2001,#2003
(Table 2003)
Call the XMS v3.0 driver "Reallocate any extended memory block" function with:
AH = 8Fh
DX = unlocked memory block handle
EBX = new size in KB
Return: AX = status
0001h success
0000h failure
BL = status (80h,81h,A0h-A2h,ABh) (see #2004)
BUG: HIMEM v3.03-3.07 crash on an 80286 machine if any of the 8Xh functions
are called
SeeAlso: #1994,#2002
(Table 2004)
Values for XMS error code returned in BL:
00h successful
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 or is not managed by XMS provider
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
Format of EMM structure:
Offset Size Description (Table 2005)
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
Notes: if source and destination overlap, only forward moves (source base
less than destination base) are guaranteed to work properly
if either handle is zero, the corresponding offset is interpreted
as a real-mode address referring to memory directly addressable
by the processor
Format of XMS handle info [array]:
Offset Size Description (Table 2006)
00h BYTE handle
01h BYTE lock count
02h DWORD handle size
06h DWORD handle physical address (only valid if lock count nonzero)
SeeAlso: #1976
--------m-2F4310-----------------------------
INT 2F - Cloaking - REAL-MODE API
AX = 4310h
Return: ES:BX -> driver entry point (see #1978,#2007,#2008,#2009,#2010)
SeeAlso: AX=4310h"XMS"
(Table 2007)
Call the Cloaking v1.01 "Client Registration" function with:
AH = 7Eh
BX = subfunction
0000h get client registration count
0001h get client registration structures
ES:DI -> buffer for registration structures
Return: AX = status
0000h failed
0001h successful
---subfunction 00h---
BX = size of client structure in bytes
CX = number of clients installed
---subfunction 01h---
ES:DI buffer filled
SeeAlso: #2008,#2010,INT 2C/AX=0033h
(Table 2008)
Call the Cloaking v1.01 "Verify Cloaking Host" function with:
AH = 7Fh
Return: AX = status
0000h failed
0001h (successful) if installed
BX = version (0101h for v1.01)
CX = flags
bit 0: host is VCPI-based
DS:DX -> ASCIZ Cloaking host signature
"CLOAKING.EXE"0, followed by a far-call entry point to
uninstall host (see #2009) in Helix's CLOAKING.EXE
SeeAlso: #2007,#2010
Index: installation check;Cloaking host|installation check;CLOAKING.EXE
(Table 2009)
Call the CLOAKING.EXE "Uninstall Host" function with:
Return: AX = 4F4Bh ('OK') if successfully uninstalled protected-mode code
(Table 2010)
Call the Cloaking "Start Protected-Mode Client" function with:
AH = 82h
DX = XMS handle of locked block containing protected-mode code
CL = code size (00h 16-bit, else 32-bit)
ESI, EDI = parameters to pass to protected-mode code
Return: AX = status
nonzero success
0000h failed
BL = error code (A2h,B0h) (see #2004)
Notes: this function calls a user initialization function at offset 0 in
the XMS memory block (see #2011)
supported by Helix's RM386 v6.00 and Helix's CLOAKING.EXE
SeeAlso: #2007,#2008
(Table 2011)
Values user initialization function is called with:
EBX = physical address of block's start
ESI = user data from function 82h call
EDI = user data from function 82h call
CS = code selector for XMS block at EBX (16-bit or 32-bit)
DS = data selector for XMS block, starting at EBX
ES = selector for V86 memory access to full real-mode 1088K
GS = selector for full 4G flat address space
SS:ESP -> stack provided by host
Return: via 32-bit FAR return
Note: the initialization function may call any protected-mode Cloaking
service; it should store the values of DS, ES, and GS for future
reference
--------m-2F4310-----------------------------
INT 2F - Helix Netroom RM386 v6.00 - XMS EXTENSIONS
AX = 4310h
Return: ES:BX -> driver entry point (see #2012,#2013,#2014,#2015)
Notes: HIMEM.SYS v2.77 chains to previous handler if AH is not 00h or 10h
HIMEM.SYS requires at least 256 bytes free stack space when calling
the driver entry point
SeeAlso: AX=4300h,AX=4310h"XMS",AX=4310h"Cloaking"
(Table 2012)
Call the Netroom RM386 v6.00 "Reallocate upper memory block" function with:
AH = 80h
DX = segment address of UMB to resize
BX = new size of block in paragraphs
Return: AX = status
0001h success
0000h failure
BL = error code (80h,B0h,B2h) (see #2004)
DX = maximum available size
Note: this function is identical to function 12h
SeeAlso: #1997,#2013
(Table 2013)
Call the Netroom RM386 v6.00 "re-enable HMA allocation" function with:
AH = 81h
Return: AX = 0001h (success)
SeeAlso: #1980,#2012,#2014
(Table 2014)
Call the Netroom RM386 v6.00 "Create new UMB entry" function with:
AH = 83h
BX = segment of high-memory block
DX = first page of start of block
CX = number of consecutive pages in block
DI = start of UMB in block
Return: AX = 0001h (success)
DI = segment of first high-DOS block
Note: the new UMB is not linked into the high-memory chain
SeeAlso: #1995,#2013,#2015
(Table 2015)
Call the Netroom RM386 v6.00 "Get all XMS handles info" function with:
AH = 84h
CX = size of buffer for handle info
ES:DI -> buffer for handle info (see #2006)
Return: AX = 0001h (success)
DX = current number of allocated XMS handles
SeeAlso: #2014,#2000
--------m-2F4310-----------------------------
INT 2F - NEC PC-9800 - XMZ - PRIVATE API
AX = 4310h
Return: ES:BX -> driver entry point (see #2016,2713)
Program: XMZ is an XMS 2.x-compatible driver for the NEC PC-98 series written
by ZOBplus Hayami and available at
ftp:/ftp.tohoku.ac.jp/pub/msdos/Memory/xmz/
SeeAlso: AX=4300h,AX=4310h"XMS"
(Table 2016)
Call XMZ v1.02 "Get HMA Information" function with:
AH = FFh (XMZ only)
AL = 01h
Return: AX = 1 on success
DX = minimum HMA allocation size (/HMAMIN=)
BX = actual size of HMA allocation, if in use (i.e. the value in DX
when XMS function 1 was called)
SeeAlso: #2017
(Table 2017)
Call XMZ v1.02 "Get EMB Handle Information" function with:
AH = FFh (XMZ only)
AL = 02h
Return: AX = 1 on success
DX = number of EMB handles configured (/NUMHANDLES=)
BX = offset in XMZ's segment of the handle table (use segment of
entry point) (see #2018)
SeeAlso: #2016
Format of XMZ v1.02 EMB Handle structure:
Offset Size Description (Table 2018)
00h BYTE flag byte
04h unused handle slot
02h in-use handle slot
01h handle slot that represents a free block
01h BYTE lock count
02h WORD block start address (1K increments)
04h WORD block length (1K increments)
SeeAlso: #2017
--------m-2F4320-----------------------------
INT 2F U - HIMEM.SYS - Mach 20 SUPPORT
AX = 4320h
???
Return: ???
--------m-2F4330-----------------------------
INT 2F CU - HIMEM.SYS v2.77+ - GET EXTERNAL A20 HANDLER ADDRESS
AX = 4330h
Return: AL = 80h if external A20 handler provided
ES:BX -> external A20 handler (see #2019)
CL = A20 detection support
00h handler is unable to report A20 state
01h handler supports function 0002h to report A20 state
Note: HIMEM.SYS calls this function to allow an external program to provide
an A20 handler (i.e. to support a machine not supported by HIMEM
itself)
SeeAlso: AX=4308h,AX=4310h
(Table 2019)
Call parameters for external A20 handler are:
AX = function
0000h disable A20
0001h enable A20
0002h get A20 state
Return: AX = status (functions 0000h and 0001h)
0000h failure
0001h successful
AX = A20 state (function 0002h)
0000h disabled
0001h enabled
Note: HIMEM.SYS only calls function 0002h if the returned CL indicated that
the handler supports the call
----------2F43D6-----------------------------
INT 2F - Multiplex - ???
AX = 43D6h
Note: Central Point's CPBACKUP v9 calls this function with CX=7FFh and
DX=80D3h at startup
--------E-2F43E0BX0000-----------------------
INT 2F - DOS Protected Mode Services (DPMS) v1.0 - INSTALLATION CHECK
AX = 43E0h
BX = 0000h
CX = 4450h ('DP')
DX = 4D53h ('MS')
Return: AX = 0000h if installed
CF clear
ES:DI -> server structure (see #2020)
ES:BX -> registration structure (pre-NWDOS 7 beta spec) (see #2022)
Note: the DPMS 1.0 server included with the original release of Novell DOS
7.0 supports both the beta and 1.0 specification, setting ES:BX even
if CX and DX are not as specified on entry (since the beta
specification did not use those registers). However, the DPMS 1.1
server included with the March 1994 update does not support the beta
specification
SeeAlso: AX=43E1h,AX=43E2h,AX=43E3h,INT 2F/AX=1687h
Index: signature strings;DPMS
Format of DPMS 1.0 server structure:
Offset Size Description (Table 2020)
00h 4 BYTEs signature string "DPMS"
04h 2 BYTEs DPMS version (major,minor)
06h 8 BYTEs blank-padded server OEM name
0Eh 2 BYTEs OEM server version (major,minor)
10h WORD DPMS flags (see #2021)
12h BYTE CPU type
(02h = 286, 03h = 386 or higher, higher values allowed)
Bitfields for DPMS flags:
Bit(s) Description (Table 2021)
0 fast processor reset available (286 only)
1 DPMS server is enabled
2 memory is remapped
3-15 reserved (undefined)
Format of beta DPMS registration structure:
Offset Size Description (Table 2022)
00h DWORD real-mode API entry point (see #2024)
04h DWORD 16-bit protected-mode API entry point (see #2024)
08h 8 BYTEs reserved (0)
10h 8 BYTEs blank-padded server OEM name
18h WORD flags
bit 0: fast processor reset available (286 only)
bits 1-15 reserved (undefined)
1Ah 2 BYTEs DPMS version (major,minor)
1Ch BYTE CPU type (02h = 286, 03h = 386 or higher)
--------m-2F43E1-----------------------------
INT 2F - DOS Protected Mode Services (DPMS) v1.0 - REGISTER CLIENT
AX = 43E1h
CX = required protected-mode stack size in bytes
ES:DI -> DPMS client interface structure (see #2023)
Return: AX = 0000h if supported
CF clear
ES:DI buffer filled with API entry point code from offset 0Ah
Note: the client is allowed to copy the returned API code to any location in
memory, and need not keep the three code fields together
SeeAlso: AX=43E0h,AX=43E2h,AX=43E3h
Format of DPMS client interface structure:
Offset Size Description (Table 2023)
00h WORD 0000h (structure version / flags)
02h 8 BYTEs blank-padded client name
0Ah 7 BYTEs real/virtual-86 mode API code (see #2024)
11h BYTE space for return instruction
set to C3h for near return, CBh for far return
12h 7 BYTEs 16-bit protected-mode API code (see #2024)
19h BYTE space for return instruction
set to C3h for near return, CBh for far return
1Ah 9 BYTEs 32-bit protected-mode API code (see #2024)
23h BYTE space for return instruction
set to C3h for near return, CBh for far return
Note: the DPMS server fills the return opcode bytes with zeros and DPMS
requests will thus crash the system unless the application
explicitly sets them (some early versions set them to C3h by
default, but one should not rely on that)
(Table 2024)
Call DPMS entry point with:
AX = 0000h unregister client from server
---control transfer functions---
AX = 0100h call protected-mode procedure
CX = number of words of stack to copy
ES:(E)DI -> callup/down register structure (see #2026)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0101h call real-mode procedure (RETF return)
CX = number of words of stack to copy
ES:(E)DI -> callup/down register structure (see #2026)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0102h call real-mode procedure (IRET return)
CX = number of words of stack to copy
ES:(E)DI -> callup/down register structure (see #2026)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0103h call real-mode interrupt handler
BL = interrupt number
CX = number of words of stack to copy
ES:(E)DI -> callup/down register structure (see #2026)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0104h register default protected mode procedure
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0105h register default real-mode procedure (RETF return)
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
Note: the procedure will be called from 16-bit prot. mode
AX = 0106h register default real-mode procedure (IRET return)
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
Note: the procedure will be called from 16-bit prot. mode
AX = 0107h register default real-mode interrupt handler
BL = interrupt number
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
Note: the handler will be called from 16-bit protected mode
AX = 0108h register default real-mode procedure (RETF return)
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
Note: the procedure will be called from 32-bit prot. mode
AX = 0109h register default real-mode procedure (IRET return)
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
Note: the procedure will be called from 32-bit prot. mode
AX = 010Ah register default real-mode interrupt handler
BL = interrupt number
ES:(E)DI -> default register structure (see #2027)
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
Note: the handler will be called from 32-bit protected mode
---descriptor management---
AX = 0200h allocate descriptors
CX = number of descriptors to allocate
Return: CF clear if successful
AX = selector for first descriptor allocated
CF set on error
AX = error code (see #2025)
AX = 0201h free a descriptor
BX = selector for descriptor
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0202h create alias descriptor
BX = selector for descriptor to be aliased
Return: CF clear if successful
AX = alias descriptor
CF set on error
AX = error code (see #2025)
AX = 0203h build alias to real-mode segment
BX = descriptor
CX = real-mode segment
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0204h set descriptor base
BX = descriptor
CX:DX = base address
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0205h set descriptor limit
BX = descriptor
CX = limit
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0206h set descriptor type/attribute
BX = descriptor
CL = type
CH = attribute
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0207h get descriptor base
BX = descriptor
Return: CF clear if successful
CX:DX = base address
CF set on error
AX = error code (see #2025)
---linear memory functions---
AX = 0300h get size of largest free block of memory
Return: CF clear if successful
BX:CX = size
CF set on error
AX = error code (see #2025)
AX = 0301h allocate block of extended memory
BX:CX = required size
Return: CF clear if successful
BX:CX = base address
SI:DI = handle
CF set on error
AX = error code (see #2025)
AX = 0302h free block of extended memory
SI:DI = handle
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0303h map linear memory
ES:(E)DI -> DDS (see #2028)
Return: CF clear if successful
BX:CX = base address
SI:DI = handle
CF set on error
AX = error code (see #2025)
AX = 0304h unmap linear memory
SI:DI = handle
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0305h get page table entries
ESI = linear address
(E)CX = count
ES:(E)DI -> buffer for page table entries
Return: CF clear if successful
ES:(E)DI buffer filled
CF set on error
AX = error code (see #2025)
AX = 0306h set page table entries
EBX = linear memory handle
ESI = linear address
(E)CX = count
ES:(E)DI -> buffer containing page table entries
Return: CF clear if successful
CF set on error
AX = error code (see #2025)
AX = 0307h get largest mappable block size
Return: CF clear if successful
BX:CX = size
CF set on error
AX = error code (see #2025)
---miscellaneous---
AX = 0400h relocate segment to extended memory
ES:SI = base address
CX = limit
BL = type
BH = attribute
DX = selector or 0000h
Return: CF clear if successful
AX = selector
BX:CX = new base address
SI:DI = handle
CF set on error
AX = error code (see #2025)
Note: the beta DPMS specification, which is still supported by the Novell
DOS 7.0 DPMS host, only supported functions 0100h-0103h, 0200h-0207h,
0300h-0304h, and 0400h
(Table 2025)
Values for DPMS error code:
8000h general error
8001h unsupported function
8002h unable to switch to protected mode
8004h no default stack defined
8005h unknown client
8010h resource unavailable
8011h descriptor unavailable
8012h linear memory unavailable
8013h physical memory unavailable
8021h invalid value
8022h invalid selector
8023h invalid handle
8025h invalid linear address
Format of DPMS callup/down register structure:
Offset Size Description (Table 2026)
00h DWORD EDI
04h DWORD ESI
08h DWORD EBP
0Ch 4 BYTEs reserved (0) (ESP, may be used by DPMS server)
10h DWORD EBX
14h DWORD EDX
18h DWORD ECX
20h DWORD EAX
24h DWORD EIP
28h WORD CS
2Ah 2 BYTEs reserved (0)
2Ch DWORD EFLAGS
30h DWORD ESP
34h WORD SS
36h 2 BYTEs reserved (0)
38h WORD ES
3Ah 2 BYTEs reserved (0)
3Ch WORD DS
3Eh 2 BYTEs reserved (0)
40h WORD FS
42h 2 BYTEs reserved (0)
44h WORD GS
46h 2 BYTEs reserved (0)
Format of DPMS default register structure:
Offset Size Description (Table 2027)
00h DWORD EIP
04h WORD CS
06h 2 BYTEs reserved (0)
08h WORD number of words to copy from stack to stack
0Ah BYTE (call) 00h
(ret) nonzero if call could not be made
0Bh BYTE reserved (may be used by some servers)
0Ch DWORD ESP
10h WORD SS
12h 2 BYTEs reserved (0)
14h WORD ES
16h 2 BYTEs reserved (0)
18h WORD DS
1Ah 2 BYTEs reserved (0)
1Ch WORD FS
1Eh 2 BYTEs reserved (0)
20h WORD GS
22h 2 BYTEs reserved (0)
24h 9 BYTEs API entry code (filled in by server)
Format of DPMS lock DDS:
Offset Size Description (Table 2028)
00h DWORD total size in bytes
04h DWORD offset
08h WORD segment or selector
0Ah WORD reserved
0Ch WORD maximum number of physical blocks structure has space for
0Eh WORD number of physical blocks listed
10h DWORD physical address of first block
14h DWORD size in bytes of first block
...
--------m-2F43E2-----------------------------
INT 2F - DOS Protected Mode Services (DPMS) v1.0 - ENABLE/DISABLE DPMS
AX = 43E2h
BX = new state (0000h disable, 0001h enable)
Return: AX = 0000h if supported
Note: this function should normally be called only by system software
SeeAlso: AX=43E0h,AX=43E1h,AX=43E3h
--------m-2F43E3BX0000-----------------------
INT 2F - DOS Protected Mode Services (DPMS) v1.0 - DPMS STARTUP BROADCAST
AX = 43E3h
BX = 0000h
CX = 4450h ('DP')
DX = 4D53h ('MS')
SeeAlso: AX=43E0h,AX=43E4h
--------m-2F43E4BX0000-----------------------
INT 2F - DOS Protected Mode Services (DPMS) v1.0 - DPMS EXIT BROADCAST
AX = 43E4h
BX = 0000h
CX = 4450h ('DP')
DX = 4D53h ('MS')
SeeAlso: AX=43E0h,AX=43E3h
--------E-2F44-------------------------------
INT 2F U - DOS Extender support???
AH = 44h
AL = function (at least 0Bh, 15h, 17h)
???
Return: ???
Note: called by Codeview for Windows
SeeAlso: AH=86h
--------G-2F4500-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - INSTALLATION CHECK
AX = 4500h
Return: AL = installation status
01h if PROF.COM installed
02h if VPROD.386 installed
SeeAlso: AX=4501h,AX=4502h
--------G-2F4501-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - SETUP PROFILER
AX = 4501h
BX = CSIPS buffer size in KB (first parameter for ProfSetup)
CX = output limit in KB (second parameter for ProfSetup)
Note: this call is not supported by PROF.COM
SeeAlso: AX=4502h,AX=4503h
--------G-2F4502-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - SET SAMPLING RATE
AX = 4502h
BL = sampling rate for PROF.COM (0 < BL <= 13)
(01h = 8192/s, 04h = 1024/s, 08h = 32/s, 0Dh = 1/s)
CX = sampling rate for VPROD.386
Note: for PROF.COM, this programs the CMOS clock by setting BL+2 as the
low four bits of CMOS register 0Ah. The interruption rate is
1 SHL (15 - BL) per second.
SeeAlso: AX=4501h,AX=4503h
--------G-2F4503-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - START PROFILING
AX = 4503h
Notes: Profiling is also turned on by the key combinations
LeftShift + RightShift + Alt and LeftShift + RightShift + Ctrl
for PROF.COM, this call programs the CMOS clock by reading register
0Ch, and setting bit 6 of register 0Bh. It then makes sure that IRQ8
is unmasked
SeeAlso: AX=4504h
--------G-2F4504-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - STOP PROFILING
AX = 4504h
Notes: profiling is also turned off by the key combination
LeftShift + RightShift
for PROF.COM, this programs the CMOS clock by reading register 0Ch
and clearing bit 6 of register 0Bh. It then masks IRQ8.
SeeAlso: AX=4503h,AX=4505h,AX=4506h,AX=4507h
--------G-2F4505-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - CLEAR PROFILING DATA
AX = 4505h
SeeAlso: AX=4503h,AX=4504h,AX=4506h
--------G-2F4506-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - "ProfFlush"
AX = 4506h
SeeAlso: AX=4505h,AX=4507h
--------G-2F4507-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - "ProfFinish"
AX = 4507h
Note: this call is essentially a "ProfStop" (AX=4504h) followed by
"ProfFlush" (AX=4506h)
SeeAlso: AX=4504h,AX=4505h,AX=4506h
--------G-2F4508-----------------------------
INT 2F U - Microsoft Profiler (PROF.COM/VPROD.386) - ALTERNATE SEGDEBUG IFACE
AX = 4508h
BX = ordinal (or 0000h)
CX = segment
DX = instance (or 0000h)
SI = type (or 0000h)
ES:DI -> ASCIZ module name
Notes: this call is an alternate entry to the profiler's SEGDEBUG
interface, but only to function 0, for notifying the profiler of
each new segment loaded. The SHOWHITS utility then examines the
profiler's output files (CSIPS.DAT and SEGENTRY.DAT) in conjunction
with symbol files to provide information in a useful form.
this call does not have a corresponding Windows function
SeeAlso: AX=4500h
--------D-2F4601-----------------------------
INT 2F CU - MS Windows WINOLDAP - SWITCHING ???
AX = 4601h
Return: ???
Note: the DOS 5+ kernel intercepts this function and copies the MCB
following the caller's PSP memory block into the DOS data segment;
in conjunction with AX=4602h, this intercept is used by DOS to
avoid corruption of the Windows real-mode heap's end sentinel
SeeAlso: AX=1700h,AX=4602h
--------D-2F4602-----------------------------
INT 2F CU - MS Windows WINOLDAP - SWITCHING ???
AX = 4602h
Return: ???
Note: the DOS 5+ kernel intercepts this function and copies the
previously-saved MCB from the DOS data segment into the MCB following
the caller's PSP memory block; in conjunction with AX=4601h, this
intercept is used by DOS to avoid corruption of the Windows real-mode
heap's end sentinel
SeeAlso: AX=1700h,AX=4601h
--------E-2F46-------------------------------
INT 2F U - Windows/286 DOS Extender
AH = 46h
AL = subfunction (03h,04h)
Return: ???
Note: these two subfunctions are called by MS Windows 3.0
--------v-2F4653CX0002-----------------------
INT 2F - F-PROT v1.x only - F-LOCK.EXE - API
AX = 4653h ('FS')
CX = 0002h
BX = subfunction
0000h installation check
Return: AX = FFFFh
0001h uninstall
Return: AX,BX,ES destroyed
0002h disable (v1.08 and below only)
0003h enable (v1.08 and below only)
Program: F-LOCK is part of the shareware F-PROT virus/trojan protection
package by Fridrik Skulason
SeeAlso: AX=4653h/CX=0003h,AX=CA00h,INT 21/AX=4BEEh
Index: installation check;F-LOCK|uninstall;F-LOCK
--------v-2F4653CX0003-----------------------
INT 2F - F-PROT v1.x only - F-XCHK.EXE - API
AX = 4653h ('FS')
CX = 0003h
BX = subfunction
0000h installation check
Return: AX = FFFFh
0001h uninstall
Return: AX,BX,ES destroyed
Program: F-XCHK is part of the shareware F-PROT virus/trojan protection
package by Fridrik Skulason
SeeAlso: AX=4653h/CX=0002h,AX=4653h/CX=0004h,AX=CA00h
Index: installation check;F-XCHK|uninstall;F-XCHK
--------v-2F4653CX0004-----------------------
INT 2F - F-PROT v1.x only - F-POPUP.EXE - API
AX = 4653h ('FS')
CX = 0004h
BX = subfunction
0000h installation check
Return: AX = FFFFh
0001h uninstall
Return: AX,BX,ES destroyed
0002h disable (v1.08 and below only)
display message (v1.14+)
other registers: ???
0003h enable (v1.08 and below only)
display message (v1.14+)
other registers: ???
Return: AX = key pressed by user
Program: F-POPUP is part of the shareware F-PROT virus/trojan protection
package by Fridrik Skulason
SeeAlso: AX=4653h/CX=0003h,AX=4653h/CX=0005h,AX=CA00h
Index: installation check;F-POPUP|uninstall;F-POPUP
--------v-2F4653CX0005-----------------------
INT 2F - F-PROT v1.x only - F-DLOCK.EXE - API
AX = 4653h ('FS')
CX = 0005h
BX = subfunction
0000h installation check
Return: AX = FFFFh
0001h uninstall
Return: AX,BX,ES destroyed
Program: F-DLOCK is part of the shareware F-PROT virus/trojan protection
package by Fridrik Skulason
SeeAlso: AX=4653h/CX=0004h,AX=CA00h
Index: installation check;F-DLOCK|uninstall;F-DLOCK
----------2F4653CX0007-----------------------
INT 2F - F-PROT v2.x - VIRSTOP - ENABLE/DISABLE BOOTSECTOR READ CHECKING
AX = 4653h ('FS')
CX = 0007h
BL = new state of bootsector checking (01h = disabled)
Program: VIRSTOP is the resident virus-checker from Fridrik Skulason's F-PROT
virus/trojan protection package
----------2F4653CX0008-----------------------
INT 2F - F-PROT v2.x - ???
AX = 4653h ('FS')
CX = 0008h
???
Return: ???
Note: called by F-PROT v2.x VIRSTOP
----------2F4653CX0008-----------------------
INT 2F - F-PROT v2.x - VIRSTOP - INSTALLATION CHECK
AX = 4653h ('FS')
CX = 0008h
Return: AX = 5346h if installed
BX = version???
DS:SI -> ASCIZ name of file containing virus signatures
DS:DI -> 80-byte buffer for ???
--------W-2F4680-----------------------------
INT 2F U - MS Windows v3.0 - INSTALLATION CHECK
AX = 4680h
Return: AX = result
0000h MS Windows 3.0 running in real (/R) or standard (/S) mode,
or DOS 5 DOSSHELL active
nonzero no Windows, Windows prior to 3.0, or Windows3 in enhanced
mode
Note: Windows 3.1 finally provides an installation check which works in all
modes (see AX=160Ah)
SeeAlso: AX=1600h,AX=160Ah
----------2F47-------------------------------
INT 2F U - ???
AH = 47h
???
Return: ???
Note: reportedly called by Microsoft BASIC Compiler v7.0
--------K-2F4800-----------------------------
INT 2F - DOS 5+ DOSKEY - INSTALLATION CHECK
AX = 4800h
Return: AL = nonzero if installed (DOS 5.0 and 6.0 return AX=AA02h)
ES = segment of DOSKEY resident portion
Note: DOSKEY chains if AL is not 00h or 10h on entry
SeeAlso: AX=4800h"PCED",AX=4810h
--------K-2F4800-----------------------------
INT 2F - PCED v2.1 - INSTALLATION CHECK
AX = 4800h
Return: AX = AACDh if installed
ES = segment of PCED kernel (PCED has multiple code segments)
Program: PCED v2.1 is a command line editor/history/macro facility by
Cove Software. It is the commercial version of the freeware CED.
Notes: DOSKEY also responds to this call if installed, returning AX=AA02h.
unlike DOSKEY, PCED does *not* chain if AL contains an
unsupported function code. It IRETs with all registers intact.
--------K-2F4810-----------------------------
INT 2F - DOS 5+ DOSKEY, PCED v2.1 - READ INPUT LINE FROM CONSOLE
AX = 4810h
DS:DX -> line buffer (see #0661 at INT 21/AH=0Ah)
Return: AX = 0000h if successful
Notes: the first byte (length) of the buffer MUST be 80h, or DOSKEY chains to
the previous handler; PCED allows sizes other than 80h
if the user's input is a macro name, no text is placed in the buffer
even though AX=0000h on return; the program must immediately issue
this call again to retrieve the expansion of the macro. Similarly,
if the user enters a special parameter such as $*, this call must
be repeated to retrieve the expansion; on the second call, DOSKEY
overwrites the macro name on the screen with its expansion.
unlike DOSKEY, PCED expands all macros on the first call, so it is
not necessary to make two calls; since the buffer is not empty on
return, DOSKEY-aware programs will not make the second call
DOSKEY chains if AL is not 00h or 10h on entry
SeeAlso: AX=4800h,INT 21/AH=0Ah
--------K-2F48C0-----------------------------
INT 2F - PCED v2.1 - PCED API
AX = 48C0h
DX = API function code
other registers as required by the specified function
Return: CF clear if successful
CF set on error
AX = PCED error code
other registers as appropriate for API function
Program: PCED v2.1 is a command line editor/history/macro facility by
Cove Software. It is the commercial version of the freeware CED.
Note: the full API information is available from Cove Software
SeeAlso: AX=4800h"PCED",AX=48C1h,AX=48C2h,AX=48C3h
--------U-2F48C1BL00-------------------------
INT 2F - PCED/VSTACK - INSTALLATION CHECK
AX = 48C1h
BL = 00h
Return: AX = 0000h if installed
BX = VSTACK resident segment
Program: VSTACK is a resident backscroll utility included as part of the PCED
package by Cove Software
Note: chains if BL <> 00h on entry
SeeAlso: AX=48C0h,AX=48C2h
--------U-2F48C2BL00-------------------------
INT 2F - PCED/ATTRIB - INSTALLATION CHECK
AX = 48C2h
BL = 00h
Return: AX = 0000h if installed
BX = ATTRIB resident segment
Program: ATTRIB is a resident file attribute changer included as part of the
PCED package by Cove Software
Note: chains if BL <> 00h on entry
SeeAlso: AX=48C0h,AX=48C1h,AX=48C3h
--------K-2F48C3BL00-------------------------
INT 2F - PCED/KEYDEF - INSTALLATION CHECK
AX = 48C3h
BL = 00h
Return: AX = 0000h if installed
BX = KEYDEF resident segment
Program: KEYDEF is a resident keyboard redefinition utility included as part
of the PCED package by Cove Software
Note: chains if BL <> 00h on entry
SeeAlso: AX=48C0h,AX=48C2h,AX=48C4h
--------U-2F48C4BL00-------------------------
INT 2F - PCED/FLIST - INSTALLATION CHECK
AX = 48C4h
BL = 00h
Return: AX = 0000h if installed
BX = FLIST resident segment
Program: FLIST is a resident filelist processor included as part of the PCED
package by Cove Software
Note: chains if BL <> 00h on entry
SeeAlso: AX=48C0h,AX=48C3h,AX=48C5h
--------U-2F48C5BL00-------------------------
INT 2F - PCED/ASSOC - INSTALLATION CHECK
AX = 48C5h
BL = 00h
Return: AX = 0000h if installed
BX = ASSOC resident segment
Program: ASSOC is a resident utility included as part of the PCED package which
associated files with executable programs based on their extensions
Note: chains if BL > 02h on entry
SeeAlso: AX=48C0h,AX=48C4h,AX=48C5h/BL=01h,AX=48C5h/BL=02h
--------U-2F48C5BL01-------------------------
INT 2F - PCED/ASSOC - GET VERSION
AX = 48C5h
BL = 01h
Return: AX = 0000h if installed
BX = binary ASSOC version (BL = major, BH = minor)
Note: chains if BL > 02h on entry
SeeAlso: AX=48C0h,AX=48C5h/BL=00h,AX=48C5h/BL=02h
--------U-2F48C5BL02-------------------------
INT 2F - PCED/ASSOC - ASSOCIATION TEST
AX = 48C5h
BL = 02h
DS:SI -> ASCIZ filename
Return: AX = status
0000h if filename is unknown
0001h if there is an association defined for the file
BX destroyed
Program: ASSOC is a resident utility included as part of the PCED package which
associated files with executable programs based on their extensions
Note: chains if BL > 02h on entry
SeeAlso: AX=48C0h,AX=48C5h/BL=00h,AX=48C5h/BL=01h
----------2F49-------------------------------
INT 2F U - ???
AH = 49h
???
Return: ???
Note: reportedly called by DOS 5.0 installation
--------D-2F4A00CX0000-----------------------
INT 2F CU - DOS 5+ - FLOPPY-DISK LOGICAL DRIVE CHANGE NOTIFICATION
AX = 4A00h
CX = 0000h
DH = new drive number
DL = current drive number
Return: CX = FFFFh to skip "Insert diskette for drive X:" message
Note: called by MS-DOS 5.0+ IO.SYS just before displaying the message
"Insert diskette for drive X:" on single-floppy systems
--------D-2F4A01-----------------------------
INT 2F - DOS 5+ - QUERY FREE HMA SPACE
AX = 4A01h
Return: BX = number of bytes available in HMA (0000h if DOS not using HMA)
ES:DI -> start of available HMA area (FFFFh:FFFFh if not using HMA)
Notes: called by Windows 3.1 DOSX.EXE
supported by Novell DOS 7
SeeAlso: AX=4310h,AX=4A02h
--------D-2F4A02-----------------------------
INT 2F - DOS 5+ - ALLOCATE HMA SPACE
AX = 4A02h
BX = number of bytes
Return: ES:DI -> start of allocated HMA block or FFFFh:FFFFh
BX = number of bytes actually allocated (rounded up to next paragraph
for DOS 5.0 and 6.0)
Notes: this call is not valid unless DOS is loaded in the HMA (DOS=HIGH)
called by Windows 3.1 DOSX.EXE
supported by Novell DOS 7
SeeAlso: AX=4A01h
--------T-2F4A05-----------------------------
INT 2F U - DOS 5+ DOSSHELL - TASK SWITCHING API???
AX = 4A05h
SI = function
0000h reset???
0001h ???
ES:BP -> 80-byte buffer containing ???
0002h ???
0003h ???
0004h ???
BL = ???
0005h ???
0006h get ???
Return: ES:SI -> ???
0007h get ???
Return: AX = ???
0008h get ???
Return: DX:AX -> ??? (internal control data of some kind)
0009h get ???
Return: ES:SI -> ??? (apparently identical to function 0006h)
000Ah ???
BL = length of buffer
ES:BP -> buffer containing ???
000Bh get ???
Return: AX = ???
000Ch ???
BL = ???
Return: if BL nonzero on entry
DX:AX -> ???
if BL = 00h on entry
ES:SI -> ???
Notes: DOSSHELL chains to the previous handler if SI is not one of the values
listed above
the DOSSWAP.EXE module calls functions 03h,04h,05h,07h,08h,09h,0Ch
the Windows 3.1 DSWAP.EXE and WSWAP.EXE task switchers use these calls
SeeAlso: AX=4B01h
--------D-2F4A06-----------------------------
INT 2F CU - DOS 5+ - DOS SUPERVISOR "REBOOT PANEL" - ADJUST MEMORY SIZE
AX = 4A06h
DX = segment following last byte of conventional memory
Return: DX = segment following last byte of memory available for use by DOS
Desc: used to override the default memory size when booting diskless
workstations
Notes: called by MS-DOS 5+ IO.SYS startup code if the signature "RPL" is
present three bytes beyond the INT 2F handler; this call overrides
the value returned by INT 12
hooked by RPL code at the top of memory to protect itself from being
overwritten; DOS builds a memory block with owner = 0008h and name
"RPL" which must be freed by the RPL code when it is done
SeeAlso: INT 12,INT 18
--------N-2F4A07-----------------------------
INT 2F U - RESERVED FOR PROTMAN SUPPORT
AX = 4A07h
???
Return: ???
--------c-2F4A10BX0000-----------------------
INT 2F - SMARTDRV v4.00+ - INSTALLATION CHECK AND HIT RATIOS
AX = 4A10h
BX = 0000h
CX = EBABh (v4.1+; see Note)
Return: AX = BABEh if installed
DX:BX = cache hits
DI:SI = cache misses
CX = number of dirty cache elements
BP = version in BCD (4.10 = 0410h)
Notes: most of the SMARTDRV API, including this call, is supported by
PC-Cache v8.0 and recent versions of the Norton Caches
if DBLSPACE.BIN is installed but SMARTDRV has not yet been installed,
then calls of this function with CX<>EBABh on entry cause
DBLSPACE.BIN to display the error message
"Cannot run SMARTDrive 4.0 with DoubleSpace" and abort the caller
with INT 21/AX=4C00h
SMARTDRV v3.x had a completely different API using IOCTL calls, which
was also supported by the Norton Caches
SeeAlso: AX=4A10h/BX=0001h,AX=4A10h/BX=0004h,AX=4A10h/BX=0005h
SeeAlso: AX=4A10h/BX=0007h,AX=4A10h/BX=1234h,AX=4A11h/BX=0000h
SeeAlso: INT 21/AX=4402h"SMARTDRV",INT 21/AX=4403h"SMARTDRV"
--------c-2F4A10BX0000-----------------------
INT 2F U - Novell NWCACHE - ???
AX = 4A10h
BX = 0000h
CX = 0EDCh ('EDC' = Novell European Development Center)
Return: ???
SeeAlso: AX=4A10h/BX=0001h"NWCACHE"
--------c-2F4A10BX0001-----------------------
INT 2F - SMARTDRV v4.00+ - FLUSH BUFFERS (COMMIT CACHE)
AX = 4A10h
BX = 0001h
Note: this function is also supported by PC-Cache v8.0.
SeeAlso: AX=4A10h/BX=0000h,AX=4A10h/BX=0002h
--------c-2F4A10BX0001-----------------------
INT 2F U - Novell NWCACHE - ???
AX = 4A10h
BX = 0001h
CX = 0EDCh ('EDC' = Novell European Development Center)
Return: ???
SeeAlso: AX=4A10h/BX=0000h"NWCACHE"
--------c-2F4A10BX0002-----------------------
INT 2F - SMARTDRV v4.00+ - RESET CACHE
AX = 4A10h
BX = 0002h
Note: this function is also supported by PC-Cache v8.0.
SeeAlso: AX=4A10h/BX=0000h,AX=4A10h/BX=0001h
--------c-2F4A10BX0003-----------------------
INT 2F - SMARTDRV v4.00+ - STATUS
AX = 4A10h
BX = 0003h
BP = drive number (0=A, 1=B, etc.)
DL = subfunction
00h only get information
01h turn on read cache
02h turn off read cache
03h turn on write cache
04h turn off write cache
---NWCACHE---
05h ???
06h ???
Return: AX = BABEh if OK
DL = status (see #2029)
DL = FFh if drive does not exist
Notes: If the read cache is off, reads will not be cached, but writes will
continue to be cached if the write-cache is enabled.
this function is also supported by PC-Cache v8.0.
SeeAlso: AX=4A10h/BX=0000h
Bitfields for SMARTDRV status:
Bit(s) Description (Table 2029)
7 not cached
6 write-through (not write-cached)
0-5 real drive number (0=A, 1=B...)
--------c-2F4A10BX0004-----------------------
INT 2F - SMARTDRV v4.00+ - GET CACHE SIZE
AX = 4A10h
BX = 0004h
Return: AX = size in elements of full-sized cache
BX = current size in elements
CX = size of one element in bytes
DX = number of elements under Windows
Note: this function is also supported by PC-Cache v8.0.
SeeAlso: AX=4A10h/BX=0000h,AX=4A10h/BX=0003h,AX=4A10h/BX=0005h
--------c-2F4A10BX0005-----------------------
INT 2F - SMARTDRV v4.00+ - GET DOUBLE-BUFFER STATUS
AX = 4A10h
BX = 0005h
BP = drive number (0=A, 1=B...)
Return: AX = BABEh if double-buffered
ES:DI -> 16-byte array of status bytes for fixed disks (see #2030)
SeeAlso: AX=4A10h/BX=0000h,AX=4A10h/BX=0003h,AX=4A10h/BX=0006h
(Table 2030)
Values for SMARTDRV status byte:
00h state unknown
FFh drive double-buffered
else not double-buffered
--------c-2F4A10BX0006-----------------------
INT 2F CU - SMARTDRV v4.00+ - CHECK IF DRIVE CACHEABLE
AX = 4A10h
BX = 0006h
CL = drive number (01h = A:)
Return: AX = 0006h if drive should not be cached by SMARTDRV
Note: called by SMARTDRV at startup to determine whether it should cache
a particular drive
SeeAlso: AX=4A10h/BX=0000h
--------c-2F4A10BX0007-----------------------
INT 2F - SMARTDRV v4.00+ - GET DEVICE DRIVER FOR DRIVE
AX = 4A10h
BX = 0007h
BP = drive number (00h=A:)
Return: DL = unit number within device driver
ES:DI -> device driver header for drive (see #0953)
Note: this function is also supported by PC-Cache v8.0.
this call is reported to always return the driver header of the
standard block driver (A:-C:+) for SmartDrive v5.00 from MS-DOS 6.2
SeeAlso: AX=4A10h/BX=0000h,AX=4A11h/BX=0003h,AX=4A11h/BX=0004h
--------c-2F4A10BX0008-----------------------
INT 2F - SMARTDRV v4.20+ - GET/SET FLUSH BEFORE PROMPT, CD-ROM SUPPORT
AX = 4A10h
BX = 0008h
DL = subfunction
00h set
DH = new states
bit 0: flush before prompt
bits 1-7 reserved (0)
01h get
Return: DH = status flags
bit 0: (v4.2+) flush before prompt
bit 1: (v5.0+) CD-ROM caching support installed
Note: v4.2 was an interim release to fix problems in the SMARTDRV included
with MS-DOS 6.00; v5.00 is included with MS-DOS 6.2
--------c-2F4A10BX000A-----------------------
INT 2F - SMARTDRV v4.00+ - GET ELEMENT STATUS TABLE
AX = 4A10h
BX = 000Ah
Return: ES:BX -> information pointer table (see #2031)
Note: this function is also supported by PC-Cache v8.0.
SeeAlso: AX=4A10h/BX=0000h
Format of SMARTDRV information pointer table:
Offset Size Description (Table 2031)
00h WORD offset of ??? byte/word array (byte if elements < 2000h bytes)
02h WORD offset of dirty flag byte/word array (byte if elts < 2000h)
each byte/word is a bit string of the dirty sectors in element
04h WORD offset of word array containing low halves of unique
identifiers for the corresponding element's contents
06h WORD offset of word array containing high halves of unique
identifiers for the corresponding element's contents
08h WORD offset of WORD containing current number of elements in cache
--------c-2F4A10BX1234-----------------------
INT 2F - SMARTDRV v4.00+ - SIGNAL SERIOUS ERROR
AX = 4A10h
BX = 1234h
Desc: this function pops up a message box saying that a serious error
occurred and to hit R to retry, then waits for the keypress
Note: this function is also supported by PC-Cache v8.0.
SeeAlso: AX=4A10h/BX=0000h
--------k-2F4A11BX0000-----------------------
INT 2F - DBLSPACE.BIN - "GetVersion" - INSTALLATION CHECK
AX = 4A11h
BX = 0000h
Return: AX = 0000h (successful)
BX = 444Dh ("DM")
CL = first drive letter used by DBLSPACE (41h ['A'] = A:)
CH = number of drive letters used by DBLSPACE
DX = internal DBLSPACE.BIN version number (bits 14-0)
bit 15 set if DBLSPACE.BIN has not yet been relocated to final
position in memory (i.e. DBLSPACE.SYS /MOVE)
Program: DBLSPACE.BIN is the resident driver for DoubleSpace, the
disk-compression software bundled with MS-DOS 6.0 and 6.20
Notes: this function is also supported by the version of SuperStor bundled
with IBM DOS 6.x and "preloading" versions of Stacker
the complete DBLSPACE.BIN API is still supported by MS-DOS 6.22's
DRVSPACE.BIN
SeeAlso: AX=4A11h/BX=0001h,AX=4A11h/BX=0002h,AX=4A11h/BX=0003h
SeeAlso: AX=4A11h/BX=0005h,AX=4A11h/BX=0007h,AX=4A11h/BX=FFFFh
SeeAlso: INT 21/AX=4404h"DBLSPACE"
--------k-2F4A11BX0001-----------------------
INT 2F - DBLSPACE.BIN - "GetDriveMapping" - GET DRIVE MAPPING
AX = 4A11h
BX = 0001h
DL = drive number (0=A:)
Return: AX = status (see also #2032)
0000h successful
if DL was compressed drive,
BL = host drive (bit 7 set if drive is compressed)
else if DL was host drive,
BL = compressed drive
else
BL = specified drive (if available for DoubleSpace)
BH = DoubleSpace sequence number
other error code (0101h) (see #2032)
apparently never returned for the MS-DOS 6.2 DoubleSpace
Note: the compressed volume file for the specified compressed drive is
host:\DBLSPACE.sequence
SeeAlso: AX=4A11h/BX=0000h
(Table 2032)
Values for DBLSPACE function status:
0000h successful
0100h bad function
0101h invalid drive
0102h not a compressed drive
0103h drive already swapped
0104h drive not swapped
--------k-2F4A11BX0002-----------------------
INT 2F - DBLSPACE.BIN - "Swap Drive" - SWAP DRIVE LETTERS OF CVF AND HOST DRIVE
AX = 4A11h
BX = 0002h
DL = drive number (0=A:) of compressed drive to swap with its host
Return: AX = status (0000h,0101h,0102h,0103h) (see #2032)
Note: this function is intended for use by DBLSPACE.EXE only
SeeAlso: AX=4A11h/BX=0000h
--------k-2F4A11BX0003-----------------------
INT 2F - DBLSPACE.BIN - "DSGetEntryPoints" - GET DEVICE DRIVER ENTRY POINTS
AX = 4A11h
BX = 0003h
CL = drive number (0=A:) of compressed drive
Return: CL = FFh on error (not compressed drive)
CL <> FFh driver unit number of host drive
ES:SI -> device driver's strategy routine
ES:DI -> device driver's interrupt routine
BX destroyed
Note: in conjunction with subfunction 0004h, this call allows disk caches
like SMARTDRV to apply a device driver wrapper to DoubleSpaced
drives just like SMARTDRV applies to regular block devices
SeeAlso: AX=4A10h/BX=0007h,AX=4A11h/BX=0000h,AX=4A11h/BX=0004h
--------k-2F4A11BX0004-----------------------
INT 2F - DBLSPACE.BIN - "DSSetEntryPoints" - SET DEVICE DRIVER ENTRY POINTS
AX = 4A11h
BX = 0004h
CL = drive number (0=A:) of compressed drive
DL = unit number for new driver entry points
DH = 00h
ES:SI -> device driver strategy routine to call for drive
ES:DI -> device driver interrupt routine to call for drive
Return: CL = FFh on error (not a compressed drive)
BX destroyed
Program: DBLSPACE.BIN is the resident driver for DoubleSpace, the
disk-compression software bundled with MS-DOS 6.0
Note: in conjunction with subfunction 0003h, this call allows disk caches
like SMARTDRV to apply a device driver wrapper to DoubleSpaced
drives just like SMARTDRV applies to regular block devices
SeeAlso: AX=4A10h/BX=0007h,AX=4A11h/BX=0000h,AX=4A11h/BX=0003h
--------k-2F4A11BX0005-----------------------
INT 2F - DBLSPACE.BIN - "ActivateDrive" - MOUNT COMPRESSED DRIVE
AX = 4A11h
BX = 0005h
DL = drive number (0=A:) to assign to new drive
ES:SI -> activation record (see #2033)
Return: status returned in activation record (see #2034)
SeeAlso: AX=4A11h/BX=0000h,AX=4A11h/BX=0006h
Format of DBLSPACE activation record:
Offset Size Description (Table 2033)
00h 2 BYTEs signature "MD" (4Dh 44h)
02h BYTE 4Dh ('M') mount command
03h BYTE error code (set to FFh before calling) (see #2034)
04h BYTE host drive number (0=A:)
05h ??? DISK_UNIT structure (not documented)
(Table 2034)
Values for DBLSPACE Mount error code:
00h successful
01h drive letter not available for DoubleSpace
02h drive letter already in use
03h no more disk units (increase MaxRemovableDrives in .INI)
09h CVF too fragmented
--------k-2F4A11BX0006-----------------------
INT 2F - DBLSPACE.BIN - "DeactivateDrive" - UNMOUNT COMPRESSED DRIVE
AX = 4A11h
BX = 0006h
DL = drive number (0=A:) to unmount
Return: AX = status (0000h,0102h) (see #2032)
SeeAlso: AX=4A11h/BX=0000h,AX=4A11h/BX=0005h
--------k-2F4A11BX0007-----------------------
INT 2F - DBLSPACE.BIN - "GetDriveSpace" - GET SPACE AVAIL ON COMPRESSED DRIVE
AX = 4A11h
BX = 0007h
DL = compressed drive number (0=A:)
Return: AX = status (0000h,0102h) (see also #2032)
0000h successful
DS:SI -> free space record (see #2035)
Program: DBLSPACE.BIN is the resident driver for DoubleSpace, the
disk-compression software bundled with MS-DOS 6.0
SeeAlso: AX=4A11h/BX=0000h,AX=4A11h/BX=0008h
Format of DBLSPACE free space record:
Offset Size Description (Table 2035)
00h DWORD total number of sectors in drive's sector heap
04h DWORD number of free sectors in drive's sector heap
--------k-2F4A11BX0008-----------------------
INT 2F - DBLSPACE.BIN - "GetFileFragmentSpace" - GET SIZE OF FRAGMENT HEAP
AX = 4A11h
BX = 0008h
DL = compressed drive number (0=A:)
Return: AX = status (0000h,0102h) (see also #2032)
0000h successful
BX = maximum entries in File Fragment heap
CX = available entries in File Fragment heap
SeeAlso: AX=4A11h/BX=0000h,AX=4A11h/BX=0007h,AX=4A11h/BX=0009h
--------k-2F4A11BX0009-----------------------
INT 2F - DBLSPACE.BIN - "GetExtraInfo" - DETERMINE NUMBER OF DISK_UNIT STRUCTS
AX = 4A11h
BX = 0009h
DL = compressed drive number (0=A:)
Return: AX = status (see also #2032)
0000h successful
CL = number of DISK_UNIT structures allocated
(see AX=4A11h/BX=0005h)
CH = DoubleGuard enabled-checks bitflags in bits 6-0 (DOS 6.2)
Note: the DoubleGuard checks are enabled or disabled as a block by the
DoubleGuard= line in DBLSPACE.INI; they may be individually set with
the CheckSum= line.
SeeAlso: AX=4A11h/BX=0000h,AX=4A11h/BX=0008h
--------k-2F4A11BX000A-----------------------
INT 2F - DBLSPACE.BIN v6.2 - SET AUTOMOUNT DRIVES
AX = 4A11h
BX = 000Ah
CX:DX = bitmask of drives on which to enable AutoMount
(DX bit 0 = A:, CX bit 0 = P:, etc.)
Return: AX = 0000h if supported
CX:DX = old mask or 0000h:0000h on error
BX destroyed
SeeAlso: AX=4A11h/BX=000Bh
--------k-2F4A11BX000B-----------------------
INT 2F - DBLSPACE.BIN v6.2 - GET AUTOMOUNT DRIVES
AX = 4A11h
BX = 000Bh
Return: AX = 0000h if supported
CX:DX = mask of drives with AutoMount enabled
0000h:0000h on error
BX destroyed
SeeAlso: AX=4A11h/BX=000Ah
--------k-2F4A11BXFFFE-----------------------
INT 2F U - DBLSPACE.BIN - RELOCATE
AX = 4A11h
BX = FFFEh
ES = segment to which to relocate DBLSPACE.BIN
Return: ???
Notes: called by DBLSPACE.SYS to relocate DBLSPACE.BIN to its final position
in memory
this function also unhooks and discards the code providing this
function and AX=4A11h/BX=FFFFh
this function is also supported by the version of SuperStor bundled
with IBM DOS 6.x and "preloading" versions of Stacker
SeeAlso: AX=4A11h/BX=FFFFh
--------k-2F4A11BXFFFF-----------------------
INT 2F U - DBLSPACE.BIN - GET RELOCATION SIZE
AX = 4A11h
BX = FFFFh
Return: AX = number of paragraphs needed by DBLSPACE.BIN
Note: used by DBLSPACE.SYS to relocate the DBLSPACE driver to its final
position in memory
this function is also supported by the version of SuperStor bundled
with IBM DOS 6.x and "preloading" versions of Stacker
SeeAlso: AX=4A11h/BX=0000h,AX=4A11h/BX=FFFEh
--------k-2F4A12CX4D52-----------------------
INT 2F - Microsoft Realtime Compression Interface (MRCI) - RAM-BASED SERVER
AX = 4A12h
CX = 4D52h ("MR")
DX = 4349h ("CI")
Return: CX = 4943h ("IC") if installed
DX = 524Dh ("RM") if installed
ES:DI -> MRCINFO structure (see #0590 at INT 1A/AX=B001h)
Note: this call is functionally identical to INT 1A/AX=B001h, but should be
called first, as the latter call is used for the first, ROM-based
MRCI server, while this call is used for RAM-based servers which
may be partially or entirely replacing a prior server
SeeAlso: AX=4A12h/CX=5354h,INT 1A/AX=B001h
--------k-2F4A12CX5354-----------------------
INT 2F - Stacker 4 LZS Compression Interface (LZSAPI)
AX = 4A12h
CX = 5354h ("ST")
DX = 4143h ("AC")
Return: AX = 4F4Bh ("OK") if installed
CX = 7374h ("st") if installed
DX = 6163h ("ac") if installed
ES:DI -> entry point in LZSAPI server (usually, driver
STACKER.COM) containing far address of an actual
LZSINFO structure (see #2036)
SeeAlso: AX=4A12h/CX=4D52h,INT 25/AX=CDCDh
Format of LZSINFO structure:
Offset Size Description (Table 2036)
00h 6 BYTEs signature "LZSAPI"
06h WORD server version (200 (0C8h) for Stacker 4 and Stacker Anywhere)
08h 4 BYTEs vendor signature
"STAC" = Stac Electronics, Inc.
0Ch 6 BYTEs ???
12h WORD bit flags: server status/capabilities (see #2037)
14h DWORD -> Stacker 3.X-compatible compression procedure
18h DWORD -> Stacker 3.X-compatible decompression procedure
1Ch 4 BYTEs reserved (always set to 0)
20h DWORD -> incremental Stacker 3.x-compatible compression procedure
(see #2038)
24h 4 BYTEs ???
28h DWORD -> incremental Stacker 3.x-compatible decompression procedure
(see #2039)
2Ch 4 BYTES ???
30h DWORD -> new (Stacker 4) compression procedure
34h 4 BYTEs ???
38h DWORD -> new (Stacker 4) decompression procedure
Notes: Stacker 4 usally keeps two different data-compression algorithms in
memory (preferably in XMA):
1) new (Stacker 4) data compression algorithm (4K LZ77 with hashing
and static Huffman encoding), and
2) old (Stacker 3.x-compatible) one (2K LZ77 with hashing), which
is used to work with STACVOL files created under older
versions of Stacker.
Bitfields for LZSAPI capabilities:
Bit(s) Description (Table 2037)
0 ???
1 busy/error flag
2-10 ???
11 maximum compressor/decompressor presented
(Table 2038)
Call Stacker 3.x-style non-incremental functions with:
STACK: DWORD return address for compress/decompress procedure
WORD compression algorithm parameters (see #2040)
WORD size of destination buffer (in bytes)
DWORD address of destination buffer
WORD size of source buffer (in bytes)
DWORD address of source buffer
Return: (compression/decompression procedure)
AX = size of resulting data in destination buffer
0000h if error (either destination buffer too small or error in
compressed data)
(Table 2039)
Call Stacker 4-style incremental procedures with:
STACK: DWORD return address for compr./decompr. procedure
DWORD address of LZSSWAP structure (see #2041)
if 0000:0000, procedure uses non-incremental technique
WORD compression algorithm parameters (see #2040)
WORD size of destination buffer (in bytes)
DWORD address of destination buffer
WORD size of source buffer (in bytes)
DWORD address of source buffer
(Table 2040)
Values for Compression algorithm parameters:
Value Compression level (/P=xx parameter)
07F9h 1
0621h 2
0625h 3
0665h 4
0669h 5
06E9h 6
06EDh 7
07D1h 8
07D9h 9
Format of LZSSWAP structure:
Offset Size Description (Table 2041)
00h 2 BYTEs signature "CS"
02h 6 BYTEs reserved
08h DWORD address of destination buffer swapping procedure
0Ch DWORD address of stack swapping procedure
--------k-2F4A13-----------------------------
INT 2F U - DBLSPACE.BIN - GET ??? ENTRY POINTS
AX = 4A13h
Return: AX = 134Ah if supported
ES:BX -> entry point record (see #2042)
SeeAlso: AX=4A11h/BX=0000h
Format of DBLSPACE entry point record:
Offset Size Description (Table 2042)
00h DWORD pointer to FAR function for ???
04h 5 BYTEs FAR JUMP instruction to ???
----------2F4A15BX0000-----------------------
INT 2F - MS EMM386.EXE v4.46+ - INSTALL I/O VIRTUALIZATION HANDLER
AX = 4A15h
BX = 0000h (function number)
DX = starting I/O address
EDX high word = ending I/O address
CX = number of ports to trap
DS:SI -> I/O dispatch table (see #3220)
DI = size of client's code and data
Return: CF clear if successful
CF set on error
Notes: this interface is only available in virtual-86 mode; the I/O handlers
will be called in protected mode
only ports 0100h-FFFFh may be trapped; EMM386 reserved ports 0000h-
00FFh
Format of EMM386 I/O dispatch table [array]:
Offset Size Description (Table 3220)
00h WORD I/O port offset (added to DX to get actual port number)
02h WORD offset of I/O handler for port (see #3221)
(Table 3221)
Values EMM386 I/O dispatch function is called with:
CX = Ring0 code selector for I/O handler's segment
DS = Ring0 data selector for I/O handler's segment (alias of CS)
EDX = faulting I/O address
ECX = direction (00000008h for byte output, 00000000h for byte input)
EAX = data in/out
Return: (via FAR RET)
CF clear if I/O access successfully virtualized
CF set if access not virtualized (default handler will be called to
perform the I/O)
SeeAlso: #3220
--------D-2F4A33-----------------------------
INT 2F - Windows95 - CHECK MS-DOS VERSION 7
AX = 4A33h
Return: AX = 0000h for MS-DOS 7.00+
BX,DX,SI,DS may be destroyed
AX nonzero if MS-DOS 6- or other DOS
SeeAlso: INT 21/AH=30h
--------N-2F4B-------------------------------
INT 2F - LAN Manager 2.0 DOS Enh NETWKSTA.EXE - NETWORK WORKSTATION REDIRECTOR
AH = 4Bh
???
Return: ???
Note: LAN Manager enhanced mode adds features beyond the standard redirector
file/printer services
SeeAlso: AX=118Ah,AX=4100h,AH=42h
--------T-2F4B01-----------------------------
INT 2F C - DOS 5+ TASK SWITCHER - BUILD CALLOUT CHAIN
AX = 4B01h
CX:DX -> task switcher entry point (see #2045)
ES:BX = 0000h:0000h
Return: ES:BX -> callback info structure (see #2043) or 0000h:0000h
Notes: called by the task switcher
this function is hooked by clients which require notification of task
switcher activities; the call must first be passed on to the prior
handler with registers unchanged using a simulated interrupt. On
return, the client must build a callback info structure and store
the returned ES:BX in the "next" field, then return the address of
its own callback info structure.
a client program must add itself to the notification chain if it
provides services to other programs; before terminating, it must
remove itself from the chain by calling the task switcher's entry
point with AX=0005h (see #2045)
the task switcher entry point should not be saved, as it is subject to
change and will be provided on any notification call
the Windows 3.1 Standard Mode supports this API
SeeAlso: AX=160Bh,AX=4B02h
Format of task switcher callback info structure:
Offset Size Description (Table 2043)
00h DWORD pointer to next callback info structure
04h DWORD pointer to notification function (see #2044)
08h DWORD reserved
0Ch DWORD address of zero-terminated list of API info structures
(see #2047)
(Table 2044)
Values task switcher notification function is called with:
AX = function
0000h switcher initialization
Return: AX = status
0000h if OK to load
nonzero to abort task switcher
0001h query suspend
BX = session ID
Return: AX = status
0000h if OK to switch session
0001h if not
0002h suspend session
BX = session ID
interrupts disabled
Return: AX = 0000h if OK to switch session
= 0001h if not
0003h activate session
BX = session ID
CX = session status flags
bit 0: set if first activation of session
bits 1-15: reserved (0)
interrupts disabled
Return: AX = 0000h
0004h session active
BX = session ID
CX = session status flags
bit 0: set if first activation of session
bits 1-15: reserved (0)
Return: AX = 0000h
0005h create session
BX = session ID
Return: AX = 0000h if OK to create session
= 0001h if not
0006h destroy session
BX = session ID
Return: AX = 0000h
0007h switcher termination
BX = flags
bit 0: set if calling switcher is only switcher loaded
bits 1-15: reserved (0)
Return: AX = 0000h
ES:DI -> task switcher entry point (see #2045)
Notes: function 0000h is generally called by the program which controls or
invokes the task switcher, rather than by the task switcher itself;
the entry point supplied to this function is not necessarily the
entry point to the task switcher itself, and may be 0000h:0000h. If
any client indicates that loading is not possible, all clients will
be called with function 0007h; thus it is possible for a client to
receive a termination notice without a corresponding initialization
notice.
except for functions 0002h and 0003h, the notification handler is
called with interrupts enabled and may make any INT 21h function
call; interrupts must not be enabled in functions 0002h and 0003h
function 0007h may be called with ES:DI = 0000h:0000h if the entry
point is no longer valid
--------T-2F4B02BX0000-----------------------
INT 2F - DOS 5+ TASK SWITCHER - INSTALLATION CHECK
AX = 4B02h
BX = 0000h
ES:DI = 0000h:0000h
Return: ES:DI = 0000h:0000h if task switcher not loaded
ES:DI -> task switcher entry point (see #2045) if loaded
AX = 0000h
Notes: the returned entry point is that for the most-recently loaded task
switcher; the entry points for prior task switchers may be determined
with the "get version" call (see #2045)
this function is supported by PC Tools v8+ CPTASK
SeeAlso: AX=4A05h,AX=4B03h
(Table 2045)
Call task switcher entry point with:
AX = 0000h get version
Return: CF clear if successful
AX = 0000h
ES:BX -> task switcher version struct (see #2046)
CF set if unsupported function
AX = 0001h test memory region
ES:DI -> first byte to be tested
CX = size of region to test
Return: CF clear if successful
AX = memory type of tested region
0000h global
0001h global and local
0002h local (replaced on session switch)
CF set if unsupported function
AX = 0002h suspend switcher
ES:DI -> new task switcher's entry point
Return: CF clear if successful
AX = state
0000h switcher has been suspended
0001h switcher not suspended, new switcher must
abort
0002h switcher not suspended, but new switcher
may run anyway
CF set if unsupported function
AX = 0003h resume switcher
ES:DI -> new task switcher's entry point
Return: CF clear if successful
AX = 0000h
CF set if unsupported function
AX = 0004h hook notification chain
ES:DI -> callback info structure to be added to chain
(see #2043)
Return: CF clear if successful
AX = 0000h
CF set if unsupported function
AX = 0005h unhook notification chain
ES:DI -> callback info structure to be removed from chain
(see #2043)
Return: CF clear if successful
AX = 0000h
CF set if unsupported function
AX = 0006h query API support
BX = asynchronous API identifier
Return: CF clear if successful
AX = 0000h
ES:BX -> API info structure (see #2047) for the
client which provides the highest
level of API support
CF set if unsupported function
Format of task switcher version structure:
Offset Size Description (Table 2046)
00h WORD major version of supported protocol (current protocol is 1.0)
02h WORD minor version of supported protocol
04h WORD major version of task switcher
06h WORD minor version of task switcher
08h WORD task switcher ID (see AX=4B03h)
0Ah WORD operation flags
bit 0: set if task switcher disabled
bits 1-15: reserved (0)
0Ch DWORD pointer to ASCIZ task switcher name
("MS-DOS Shell Task Switcher" for DOSSHELL task switcher)
10h DWORD pointer to previous task switcher's entry point or 0000h:0000h
Format of API info structure:
Offset Size Description (Table 2047)
00h WORD size of structure in bytes (000Ah)
02h WORD API identifier
0001h NetBIOS
0002h 802.2
0003h TCP/IP
0004h LAN Manager named pipes
0005h Novell NetWare IPX
04h WORD major version \ of highest version of API for which the support
06h WORD minor version / level specified in the next field is provided
08h WORD support level
0001h minimal support
0002h API-level support
0003h switcher compatibility
0004h seamless compatibility
--------T-2F4B03-----------------------------
INT 2F - DOS 5+ TASK SWITCHER - ALLOCATE SWITCHER ID
AX = 4B03h
ES:DI -> task switcher entry point (see #2045)
Return: AX = 0000h
BX = switcher ID (0001h-000Fh), or 0000h if no more available
Notes: if a task switcher has determined that it is the first to be loaded, it
must allocate an identifier for itself and provide this function to
all subsequent task switchers; if it is not the first to be loaded,
it must call this function to allocate an ID. The switcher ID is
used as the high four bits of all session identifiers to ensure
unique session IDs.
if no more switcher IDs are available, the new task switcher making the
call must terminate or disable itself
the task switcher providing the identifiers may call the new task
switcher's entry point as needed
this call is available from within DOSSHELL even if the task switcher
is not installed
this function is supported by PC Tools v8+ CPTASK, but appears to
always return an ID of 0000h
SeeAlso: AX=4B02h,AX=4B04h
--------T-2F4B04-----------------------------
INT 2F - DOS 5+ TASK SWITCHER - FREE SWITCHER ID
AX = 4B04h
BX = switcher ID
ES:DI -> task switcher entry point (see #2045)
Return: AX = 0000h
BX = status
0000h successful
other error (invalid ID or ID not allocated)
Notes: called by a task switcher when it exits, unless it was the first loaded
and is providing the support for AX=4B03h and AX=4B04h
the task switcher providing the identifiers may call the terminating
task switcher's entry point as needed
this call is available from within DOSSHELL even if the task switcher
is not installed
this call is supported by PC Tools v8+ CPTASK, but appears to return
sucessfully no matter which ID is given
SeeAlso: AX=4B02h,AX=4B03h
--------T-2F4B05-----------------------------
INT 2F C - DOS 5+ TASK SWITCHER - IDENTIFY INSTANCE DATA
AX = 4B05h
ES:BX = 0000h:0000h
CX:DX -> task switcher entry point (see #2045)
Return: ES:BX -> startup info structure (see #2048) or 0000h:0000h
Notes: called by task switcher
clients with instance data should hook this call, pass it through to
the previous handler with unchanged registers using a simulated
interrupt. On return, the client should create a startup info
structure (see #2048), store the returned ES:BX in the "next"
field, and return the address of the created structure in ES:BX
all MS-DOS function calls are available from within this call
SeeAlso: AX=1605h,AX=160Bh,AX=4B02h
Format of task switcher startup info structure:
Offset Size Description (Table 2048)
00h 2 BYTEs major, minor version of info structure (03h,00h)
02h DWORD pointer to next startup info structure or 0000h:0000h
06h DWORD 0000h:0000h (ignored)
0Ah DWORD ignored
0Eh DWORD pointer to instance data records (see #2049)
Format of one instance data record in array:
Offset Size Description (Table 2049)
00h DWORD address of instance data (end of array if 0000h:0000h)
04h WORD size of instance data
--------W-2F4B06-----------------------------
INT 2F - MS Windows - WIN.COM - GET ??? POINTER TO WIN.COM
AX = 4B06h
Return: AX = 0000h
ES:BX -> ??? function in WIN.COM
Note: the entry point is called with
AX = 0001h or 0003h
BX = ???
SeeAlso: AX=4B80h
--------W-2F4B20-----------------------------
INT 2F - MS Windows 3 - WIN.COM - SET PROGRAM TO EXECUTE ON EXIT
AX = 4B20h
Return: AX = 0000h if successful
DX:CX -> 256-byte buffer for pathname and commandline (see #2050)
Note: when the Windows function ExitWindows is called with an exit code of
44h, WIN.COM executes the program specified in the returned buffer
and then restarts Windows
Format of WIN.COM buffer:
Offset Size Description (Table 2050)
00h 128 BYTEs ASCIZ pathname of program to execute
80h 128 BYTEs commandline for program
--------W-2F4B80-----------------------------
INT 2F - MS Windows - WSWAP.EXE - RESET INTERNAL VARIABLES
AX = 4B80h
Return: nothing
Note: called by WINOLDAP.MOD
SeeAlso: AX=4B06h
--------p-2F4C-------------------------------
INT 2F U - Advanced Power Management
AH = 4Ch
AL = function
00h version check
01h suspend system requested
FFh suspend/resume battery notification
???
Return: ???
----------2F4D-------------------------------
INT 2F U - ???
AH = 4Dh
???
Return: ???
Note: reportedly called by Kana Kanji Converter and MSKK
--------N-2F4E53BL00-------------------------
INT 2F - SilverNET v2+ - INSTALLATION CHECK
AX = 4E53h ("NS")
BL = 00h (function "installation check")
BH = module ID (see #2051)
Return: AX = 0000h if specified module installed
BX = 4E53h if installed
Program: SilverNET is an SMB-compatible peer-to-peer NOS for DOS or
Windows systems, by Net-Source, Inc. of Santa Clara, CA.
SeeAlso: AX=4E53h/BL=01h,AX=4E53h/BL=02h,AX=B800h,AX=B809h
(Table 2051)
Values for SilverNET module ID:
01h SilverCACHE
02h Workstation
03h NetBIOS
04h Peer
20h NS Share
80h NetWare help TSR
--------N-2F4E53BL01-------------------------
INT 2F - SilverNET - GET RUNTIME PARAMETER
AX = 4E53h ("NS")
BL = 01h (function "get runtime parameter")
BH = module ID (see #2051)
CX = parameter index (see #2052,#2054,#2055)
Return: AX = WORD value at specified index (see #2053)
Desc: retrieve a word of data from the specified SilverNET module
(Table 2052)
Values for SilverNET Peer parameter index (* = read-only):
00h * maximum outstanding SMB buffers
02h * maximum logged-in nodes
04h * number of shareable resources
06h * number of characters to print per time slice
08h * number of printers that can be shared
0Ah * number of nodes logged in
0Ch * number of files to allow opened
0Eh how fast to despool (/PSLICE)
10h audit flag
24h * far pointer to resource table (each resource is 96 bytes in length)
32h * far pointer to SFT (internal if SilverNET files > CONFIG.SYS files,
else DOS SFT)
36h spool flags (see #2053)
Bitfields for spool flags:
Bit(s) Description (Table 2053)
0 LPT1 needs despooling
1 LPT2 needs despooling
2 LPT2 needs despooling
4 COM1 needs despooling
5 COM2 needs despooling
6 COM3 needs despooling
(Table 2054)
Values for NS Share parameter index (* = read-only):
00h version number (high byte = minor, low byte = major)
10h * segment of first lock record (other records in consecutive paragraphs)
(if PSP field = 0000h, lock record is free)
12h * maximum possible number of lock records
14h * starting segment of sharing buffer
(NS Share's sharing records are identical to DOS SHARE except that
fields which are normally offsets into SHARE are segment numbers)
18h * size of sharing buffer in paragraphs
1Ah * total free paragraphs in sharing buffer
1Ch * current number of shared files
1Eh * current number of locked records
(Table 2055)
Values for Workstation parameter index (* = read-only):
00h version number (high byte = minor, low byte = major)
02h * size of each network buffer for file operations
04h * number of redirector file buffers
06h * size of each print cache buffer
08h * number of network LPT printers
0Ch flush time in ticks (idle time on network printer before flushing)
0Eh (16 WORDs) last active time for each printer
2Eh * stub segment if program split into two parts
60h receive name number for datagram listens
62h * 18-byte machine name
74h * LASTDRIVE (01h = A:, etc.)
7Ch row number of message box on screen
7Eh message time in clock ticks
82h * number of network adapters in use
84h station ID broadcast flag (never set on redirectors)
96h * NetBIOS names left
98h * NCBs left
9Ah * sessions left
A2h * total number of network printers (LPT+COM)
A4h * number of serial network printers
A8h * segment containing file cache buffers
AAh * segment containing print cache buffers
ACh * bytes remaining free in HMA before program loaded
AEh * start of free memory in HMA
B2h * flag: using HMA
--------N-2F4E53BL02-------------------------
INT 2F - SilverNET - SET RUNTIME PARAMETERS
AX = 4E53h ("NS")
BL = 02h (function "set runtime parameters")
BH = module ID (see #2051)
CX = parameter index (see #2054,#2055)
DX = new value for specified parameter
Desc: set a WORD value in the specified SilverNET module
Note: not all indexed parameters are writable; modifying a read-only
parameter can result in system crashes
SeeAlso: AX=4E53h/BL=00h,AX=4E53h/BL=01h
--------N-2F5100-----------------------------
INT 2F U - ODIHLP.EXE - INSTALLATION CHECK
AX = 5100h
Return: AL = FFh if installed
BX = 0000h
DX:SI -> signature string "ODI$HLP$"
Program: ODIHLP is a real-mode helper allowing the Windows for Workgroups 3.11
protected-mode NDIS3 protocol to work with real-mode ODI drivers
and LSL.COM
Note: the returned signature string might be the first field of a structure
SeeAlso: AX=C000h"LSL.COM"
--------k-2F5200-----------------------------
INT 2F - JAM.SYS v1.10+ - "GetVersion" - INSTALLATION CHECK
AX = 5200h
Return: AH = 80h (successful) if installed
BX = internal JAM.SYS version number
CX = size of JAMINFO structure (see #2056,#2057)
DX = JAM.SYS segment address
Program: JAM.SYS is a main component of the JAM Real-Time Data Compression
Utilities by George A. Reznik and friends (JAM Software).
SeeAlso: AX=5201h
Format of JAMINFO v1.10 structure:
Offset Size Description (Table 2056)
00h 25 BYTEs extended BIOS parameter block (BPB)
19h 11 BYTEs ???
25h DWORD total number of sectors in JAM archive file
(size of compressed data area)
29h BYTE flags (see #2058)
2Ah 127 BYTEs full JAM archive file name
A9h WORD the number of fragments in archive file
ABh 96 BYTEs archive file fragmentation list -
array of 16 FRAGMENT structures (see #2059)
10Bh DWORD address of the host-drive DPB (Drive Parameter Block)
10Fh DWORD number of free sectors in JAM archive file
113h WORD device status word (see #2060)
SeeAlso: #2057
Format of JAMINFO v1.20 structure:
Offset Size Description (Table 2057)
00h 25 BYTEs extended BIOS parameter block (BPB)
19h BYTE physical driver number
1Ah BYTE reserved
1Bh BYTE extended boot record signature
1Ch DWORD volume serial number
20h 11 BYTEs volume label
2Bh 8 BYTEs file system ID
33h DWORD total number of sectors in JAM archive file
(size of compressed data area)
37h BYTE flags (see #2058)
38h 128 BYTEs full JAM archive file name
B8h WORD the number of fragments in archive file
BAh 96 BYTEs archive file fragmentation list -
array of 16 FRAGMENT structures (see #2059)
11Ah DWORD address of the host-drive DPB (Drive Parameter Block)
11Eh DWORD number of free sectors in JAM archive file
122h WORD device status word (see #2060)
Note: the first 33h bytes are copied from the archive file's boot sector
SeeAlso: #2056
Bitfields for JAMINFO flags:
Bit(s) Description (Table 2058)
2-0 reserved
3 (v1.20+)
4 enable direct write requests (Int 26h, non-DOS requests, etc.)
5 read-only mode
6 no write-behind caching
7 full undelete-compatible allocation strategy
SeeAlso: #2056,#2057
Format of JAM FRAGMENT structure:
Offset Size Description (Table 2059)
00h WORD starting sector (low word)
02h BYTE starting sector (high byte)
03h WORD size of fragment (low word)
05h BYTE size of fragment (high byte)
SeeAlso: #2056,#2057
(Table 2060)
Values for JAM.SYS status (high byte):
00h successful
01h drive is not a JAM drive
02h drive is already attached
03h archive file cluster size value is larger than driver's one
04h drive is not attached
05h drive is locked
06h drive is not locked
07h bad physical-level request
08h host drive reading/writing error
09h bad entries in JAM descriptor table
0Ah compressed data integrity error
0Bh archive file overflow
0Ch bad DOS request
0Dh incorrect parameters in JAMINFO structure
Note: the low byte of the status is the DOS error code for the Host drive
SeeAlso: #1885 at INT 2F/AX=0802h
--------k-2F5201-----------------------------
INT 2F - JAM.SYS v1.10+ - "GetInfo" - GET COMPRESSED DRIVE INFORMATION
AX = 5201h
DL = compressed drive number (0-default, 1-A:, etc.)
DS:BX -> buffer for JAMINFO structure (see #2056,#2057)
Return: AH = status (00h,01h) (see #2060)
SeeAlso: AX=5200h
--------k-2F5202-----------------------------
INT 2F - JAM.SYS v1.10+ - "Attach" - MOUNT COMPRESSED DRIVE
AX = 5202h
DL = drive number (0-default, 1-A:, etc.) to attach to the JAM
archive file
DS:BX -> pointer to JAMINFO structure (see #2056,#2057), which
contains parameters of the JAM file to mount, and pointer
to the host drive DPB (i.e. DPB of the drive on which the
JAM file is located)
Return: AH = status (00h,02h,03h,08h,09h,0Dh) (see also #2060)
03h archive file cluster size value is larger than driver's - not
mounted
09h bad entries in JAM descriptor table - file mounted read-only
AL = host drive error code (see #1885 at INT 2F/AX=0802h)
SeeAlso: AX=5203h
--------k-2F5203-----------------------------
INT 2F - JAM.SYS v1.10+ - "Detach" - UNMOUNT COMPRESSED DRIVE
AX = 5203h
DL = drive number (0-default, 1-A:, etc.) to detach
Return: AH = status (00h,01h,04h,05h,08h,09h,0Bh,0Dh) (see #2060)
AL = host drive error code (see #1885 at INT 2F/AX=0802h)
SeeAlso: AX=5202h
--------k-2F5204-----------------------------
INT 2F - JAM.SYS v1.10+ - "Lock" - LOCK COMPRESSED DRIVE
AX = 5204h
DL = drive number (0-default, 1-A:, etc.) to lock
Return: AH = status (00h,01h,04h,05h,08h,09h,0Bh,0Dh) (see #2060)
AL = host drive error code (see #1885 at INT 2F/AX=0802h)
SeeAlso: AX=5205h, AX=5206h, AX=5207h
--------k-2F5205-----------------------------
INT 2F - JAM.SYS v1.10+ - "UnLock" - UNLOCK COMPRESSED DRIVE
AX = 5205h
DL = drive number (0-default, 1-A:, etc.) to unlock
Return: AH = status (00h,01h,04h,06h,08h,09h,0Dh) (see #2060)
AL = host drive error code (see #1885 at INT 2F/AX=0802h)
SeeAlso: AX=5204h, AX=5206h, AX=5207h
Note: Lock and UnLock functions were added to the JAM API to prevent
asynchronous physical-level access (see AX=5206h,AX=5207h) to
compressed data on JAM drives. In other words, two or more programs
which use JAM API (say, JMAX optimizer and JCHKDSK - disk checker)
cannot be run on the same JAM drive simultaneously.
--------k-2F5206-----------------------------
INT 2F - JAM.SYS v1.10+ - "Read" - PHYSICAL READ DATA FROM JAM ARCHIVE
AX = 5206h
DL = drive number (0-default, 1-A:, etc.)
DS:BX -> disk transfer packet (see #2061)
Return: AH = status (00h,01h,04h,06h,07h,08h,0Dh) (see #2060)
AL = host drive error code (see #1885 at INT 2F/AX=0802h)
Program: JAM.SYS is a main component of the JAM Real-Time Data Compression
Utilities by George A. Reznik and friends (JAM Software).
SeeAlso: AX=5207h
Format of disk transfer packet:
Offset Size Description (Table 2061)
00h DWORD sector number
04h WORD number of sectors to read(write)
06h DWORD transfer address
--------k-2F5207-----------------------------
INT 2F - JAM.SYS v1.10+ - "Write" - PHYSICAL WRITE DATA TO JAM ARCHIVE
AX = 5207h
DL = drive number (0-default, 1-A:, etc.)
DS:BX -> disk transfer packet (see #2061)
Return: AH = status (00h,01h,04h,06h,07h,08h,0Dh) (see #2060)
AL = host drive error code (see #1885 at INT 2F/AX=0802h)
SeeAlso: AX=5206h
--------p-2F53-------------------------------
INT 2F U - POWER.EXE - APM event broadcasting???
AH = 53h
AL = event???
05h CPU idle
0Bh PM event broadcast API
Return: ???
Note: called by MS Windows 3.1 POWER.DRV; hooked by MS Mouse driver v8.20+
and PC-Cache v8.0
SeeAlso: AX=530Bh,AH=54h,INT 33/AX=002Fh
--------p-2F530B-----------------------------
INT 2F U - ??? (MOUSEPWR.COM, others) - ???
AX = 530Bh
BX = subfunction
0003h ???
0004h ???
???
Return: ???
Note: it appears that subfunction 0003h reads or restores the current mouse
settings (the MS Mouse driver hooks AX=530Bh), and 0004h might be
the converse
--------p-2F5400-----------------------------
INT 2F U - POWER.EXE - INSTALLATION CHECK
AX = 5400h
Return: AX = POWER.EXE version (AH = major, AL = minor) if installed
BX = 504Dh ("PM")
CF clear
Note: called by MS Windows 3.1 POWER.DRV
SeeAlso: AH=53h,AX=5401h,AX=5402h,AX=5481h,AX=5482h
--------p-2F5401-----------------------------
INT 2F U - POWER.EXE - GET/SET POWER STATUS
AX = 5401h
BH = function
00h get status
Return: BL = current power management status (see #2062)
01h set status
BL = new power managment status (see #2062)
Return: AX = function status (see #2063)
Note: called by MS Windows 3.1 POWER.DRV
SeeAlso: AH=53h,AX=5400h,AX=5402h,AX=5403h
Bitfields for power management status:
Bit(s) Description (Table 2062)
0 POWER.EXE power management enabled
1 APM firmware power management enabled
2-7 reserved (0)
Notes: bit 1 is ignored if there is no APM firmware
bits 1-0: 00 = POWER OFF, 10 = POWER STD, 11 = POWER ADV
(Table 2063)
Values for POWER.EXE function status:
0000h successful
0002h "ERROR_PM_ALREADY_CONNECTED"
0003h "ERROR_PM_NOT_CONNECTED"
0087h "ERROR_PM_INVALID_PARAMETER"
--------p-2F5402-----------------------------
INT 2F U - POWER.EXE - GET/SET IDLE DETECTION STRATEGY
AX = 5402h
BH = subfunction
00h get
other set
BL = detection strategy (00h-0Fh or FFh)
Return: BX = current/new detection strategy
SeeAlso: AH=53h,AX=5400h,AX=5401h,AX=5481h,AX=5482h
--------p-2F5403-----------------------------
INT 2F U - POWER.EXE - GET/SET ADVANCED POWER MANAGEMENT SETTING
AX = 5403h
BX = new power management setting or 0000h to get current setting
Return: AX = status
0000h successful
BX = power management setting (see #2064)
other error code
SeeAlso: AX=5401h,AX=5480h
(Table 2064)
Values for power management setting:
0001h-0005h "min"
0006h "reg"
0007h-0008h "max"
--------t-2F5453-----------------------------
INT 2F - TesSeRact RAM-RESIDENT PROGRAM INTERFACE
AX = 5453h
BX = subfunction
00h installation check
CX = 0000h
DS:SI -> 8-char blank-padded name (see #2065)
Return: AX = FFFFh installed
CX = ID number of already-installed copy
AX = anything else, not installed
CX = ID number for TSR when installed
01h get user parameters
CX = TSR ID number
Return: AX = status
0000h successful
ES:BX -> user parameter block (see #2066)
nonzero failed
02h check if hotkey in use
CL = scan code of hot key (see #0005)
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 = status
0000h successful
ES:BX -> TSR's internal data area (see #2067)
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 (see #0005)
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 zero, 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
Notes: Borland's THELP.COM popup help system for Turbo Pascal and Turbo C
(versions 1.x and 2.x only) fully supports the TesSeRact API, as
do the SWAP?? programs by Innovative Data Concepts.
AVATAR.SYS supports functions 00h and 01h (only the first three fields
of the user parameter block) using the name "AVATAR "
SeeAlso: AX=CAFEh,INT 16/AX=55FFh,INT 2D"AMIS"
Index: installation check;TesSeRact TSR interface|uninstall;TesSeRact
(Table 2065)
Values for TesSeRact names:
"AVATAR " AVATAR.SYS
"QeditTSR" TSR version of SemWare's Qedit editor
"SCRNBLNK" Trusted Access screen blanker
Format of TesSeRact User Parameter Block:
Offset Size Description (Table 2066)
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 (see #0005)
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
Index: hotkeys;TesSeRact TSR interface
Format of TSR internal data area:
Offset Size Description (Table 2067)
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 3.0+ 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 (for INTs 08h,09h,13h,16h,1Ch,21h,28h,2Fh,1Bh,23h, and 24h):
DWORD old interrupt vector
BYTE interrupt number
WORD offset in TesSeRact code segment of new interrupt handler
--------p-2F5480-----------------------------
INT 2F U - POWER.EXE - GET/SET ???
AX = 5480h
BX = direction
0000h get
other set
CX = size of buffer (at least 0010h)
DS:SI -> buffer
Return: AX = status
0000h successful
other error code
SeeAlso: AX=5400h,AX=5481h,AX=548Fh
--------p-2F5481-----------------------------
INT 2F U - POWER.EXE - GET STATISTICS
AX = 5481h
BX = which statistics
0000h idle detection
0001h APM statistics
CX = length of buffer in bytes
DS:SI -> buffer for statistics (see #2068,#2069)
Return: AX = status
0000h successful
0071h "ERROR_PM_BUFFER_TOO_SMALL"
0087h "ERROR_PM_INVALID_PARAMETER"
SeeAlso: AH=53h,AX=5400h,AX=5480h,AX=5402h,AX=5482h
Format of POWER.EXE idle detection statistics:
Offset Size Description (Table 2068)
00h DWORD "CPU_ON_TIME" total time CPU is active with POWER.EXE idle
detection enabled, in timer ticks
04h DWORD "CPU_IDLE_TIME" timer ticks during which CPU was idle
(divide by previous to get idle rate)
08h DWORD total idle calls
0Ch DWORD "TOTAL_APP_IDLE" total INT 2Fh idle calls
10h DWORD "TOTAL_DOS_YIELD" total INT 28h idle calls
14h DWORD "TOTAL_KEY_IDLE" total INT 16h idle calls
18h DWORD "TOTAL_DOS_IDLE" total INT 2Ah idle calls
Format of APM statistics:
Offset Size Description (Table 2069)
00h DWORD "RESUME_COUNT" total number of resumes since last APM_ENABLE
--------p-2F5482-----------------------------
INT 2F U - POWER.EXE - GET/SET APM POLLING FREQUENCY
AX = 5482h
BX = new polling frequency or 0000h to get current frequency
Return: AX = 0000h (successful)
BX = current frequency if BX=0000h on entry
SeeAlso: AH=53h,AX=5400h,AX=5401h,AX=5480h,AX=5481h,AX=548Fh
--------p-2F548F-----------------------------
INT 2F U - POWER.EXE - GET/SET ???
AX = 548Fh
BX = ??? or 0000h to get current ???
Return: AX = 0000h (successful)
BX = current ???
CX = ???
SeeAlso: AX=5400h,AX=5480h,AX=5482h
--------l-2F5500-----------------------------
INT 2F U - DOS 5+ - COMMAND.COM INTERFACE
AX = 5500h
Return: AX = 0000h if an instance of COMMAND.COM is already running
DS:SI -> entry point table
Notes: used to access the shareable portion of COMMAND.COM, which may have
been moved into the HMA; only the primary COMMAND.COM retains this
portion
procedures called from a dispatcher in COMMAND's resident portion;
most assume that the segment address of the resident portion is on
the stack and are thus not of general use
SeeAlso: AX=5501h
--------l-2F5501-----------------------------
INT 2F U - DOS 5+ - ROM COMMAND.COM INTERFACE
AX = 5501h
Return: ???
Note: used to determine whether the caller is the first instance of ROM
COMMAND.COM
SeeAlso: AX=5500h
--------R-2F5600-----------------------------
INT 2F - INTERLNK - INSTALLATION CHECK
AX = 5600h
DX = magic value FFFFh
BL = instance number (00h = any, 01h = first loaded, etc.)
Return: AL = FFh if installed
BL = instance number
CX = ??? (apparently always 0001h)
DX = resident CS of driver, DX:0000h -> header (see #2070)
SeeAlso: AX=5601h,AX=5602h,INT 60/AX=0000h
Format of Interlnk device driver header:
Offset Size Description (Table 2070)
00h DWORD pointer to next driver, offset=FFFFh if last driver
04h WORD device attributes (see #0954,#0955)
06h WORD device strategy entry point
08h WORD device interrupt entry point
0Ah 8 BYTEs character device name "NUL2 "
12h 165 BYTEs ???
B7h 67 BYTEs fully qualified Interlnk filename
FAh 6 BYTEs ???
100h DWORD pointer back to Interlnk filename at offset B7h
104h 8 BYTEs ???
10Ch BYTE total number of redirected drives
10Dh BYTE first local drive number (0=A:)
10Eh BYTE printer redirection (0=no, 1=yes)
10Fh BYTE ???
110h 3 BYTEs LPT1...3 status (0FFh=invalid)
113h 26 BYTEs remote drive number (0=A:, 0FEh=unused) (see note below)
12Dh 26 BYTEs always 0FEh ???
147h 26 BYTEs always 0FFh ???
Note: to obtain the remote drive number, subtract the value at offset 10Ch
from the local drive number before indexing into the table at 113h
(example: if local drives F, G, H are remote drives C, F, E then
the first three bytes at offset 113h are 02h, 05h, 04h)
for each instance of Interlnk, an extra device driver is loaded, but
all have the same device name NUL2
SeeAlso: #0953 at INT 21/AH=52h
--------R-2F5601-----------------------------
INT 2F - INTERLNK - CHECK IF REDIRECTED DRIVE
AX = 5601h
DX = magic value FFFFh
BH = drive number (0=A:)
BL = 00h
Return: (as for AL=00h if redirected drive)
SeeAlso: AX=5600h
--------R-2F5602-----------------------------
INT 2F - INTERLNK - GET ???
AX = 5602h
DX = magic value FFFFh
Return: CX = ???
SeeAlso: AX=5600h
--------d-2F5700-----------------------------
INT 2F U - IOMEGA DRIVERS - INSTALLATION CHECK
AX = 5700h
BX = program ID??? (0201h used by GUEST.EXE)
DX = 496Fh ('Io')
Return: AL = status
00h not installed
FFh installed
SeeAlso: AX=5701h,AX=5710h,AX=5711h,AX=5712h
--------d-2F5700-----------------------------
INT 2F U - IOMEGA DRIVERS - ???
AX = 5701h
BX = program ID??? (0201h used by GUEST.EXE)
DX = 496Fh ('Io')
Return: AX = 0001h
SeeAlso: AX=5700h,AX=5710h,AX=5711h,AX=5712h
--------d-2F5700-----------------------------
INT 2F U - IOMEGA DRIVERS - GET DRIVER INFORMATION???
AX = 5710h
BX = program ID??? (0201h used by GUEST.EXE)
DX = 496Fh ('Io')
Return: AX = ??? (BX ORed with ???)
BX = ??? (internal variable)
CX = ??? (internal variable)
DX = ??? (CX ORed with ???)
SeeAlso: AX=5700h,AX=5701h,AX=5711h,AX=5712h
--------d-2F5700-----------------------------
INT 2F U - IOMEGA DRIVERS - LOCK MEDIA IN DRIVE
AX = 5711h
BX = program ID??? (0201h used by GUEST.EXE)
DX = 496Fh ('Io')
Return: CF clear if successful (storage medium in drive)
AX = new lock count
CF set on error (drive empty)
SeeAlso: AX=5700h,AX=5701h,AX=5710h,AX=5712h
--------d-2F5700-----------------------------
INT 2F U - IOMEGA DRIVERS - UNLOCK MEDIA IN DRIVE / EJECT
AX = 5712h
BX = program ID??? (0201h used by GUEST.EXE)
DX = 496Fh ('Io')
Return: AX = new lock count (00h = unlocked)
Note: if the lock count was already zero, the storage medium is ejected
from the drive
SeeAlso: AX=5700h,AX=5701h,AX=5710h,AX=5711h
--------c-2F5758BX4858-----------------------
INT 2F U - Helix Multimedia Cloaking - CACHECLK - INSTALLATION CHECK
AX = 5758h
BX = 4858h ('HX')
DX = 4443h ('DC')
CX <> 5758h
Return: BX = 6878h if installed
DX = 6463h if installed
CX = version (CH=major,CL=minor)
Program: CACHECLK is a 'Cloaked' disk cache by Helix Software
Note: returns with registers unchanged if CX=5758h on entry
SeeAlso: INT 16/AX=5758h/BX=4858h,INT 2F/AX=4310h"Cloaking"
--------X-2F5D00-----------------------------
INT 2F U - PCMCIA - AWARD PCDISK - GET INFO FROM DRIVER ???
AX = 5D00h
Return: ES:BX -> ???
Note: supported by Ventura Micro / Award PCDISK.EXE v1.02c PCMCIA/ATA driver
SeeAlso: AX=5D01h,INT 21/AX=440Dh
--------X-2F5D01-----------------------------
INT 2F U - PCMCIA - AWARD PCDISK - PUT INFO INTO DRIVER ???
AX = 5D01h
ES:BX -> ???
Return: nothing
Note: supported by Ventura Micro / Award PCDISK.EXE v1.02c PCMCIA/ATA driver
SeeAlso: AX=5D00h,INT 21/AX=440Dh
--------s-2F60FFDL00-------------------------
INT 2F U - IPLAY v1.00b - INSTALLATION CHECK
AX = 60FFh
DL = 00h (function number)
BX = 5344h ('SD')
CX = 4D50h ('MP')
Return: AX = 4F4Bh ('OK') if installed
Program: IPLAY is the Inertia Player by Prime and Excalibur for .MODules
(digitized music files)
Note: in version 1.00b, any value for DL except 01h invokes this function
SeeAlso: AX=60FFh/DL=01h
--------s-2F60FFDL01-------------------------
INT 2F U - IPLAY v1.00b - GET DATA SEGMENT
AX = 60FFh
DL = 01h (function number)
BX = 5344h ('SD')
CX = 4D50h ('MP')
Return: AX = data segment
Program: IPLAY is the Inertia Player by Prime and Excalibur for .MODules
(digitized music files)
SeeAlso: AX=60FFh/DL=00h
--------v-2F6282-----------------------------
INT 2F U - PC Tools v7.0+ VDEFEND, VSAFE, VWATCH, DATAMON - SET ??? ADDRESS
AX = 6282h
CX:DX -> ??? or 0000h:0000h
DI = segment of ??? record (see #2071) or 0000h/FFFFh to ignore
Return: BX = 0062h
Note: if CX:DX = 0000h:0000h on entry, the ??? address is not changed
(DATAMON only)
SeeAlso: INT 13/AH=FAh"VSAFE",INT 21/AH=FAh"VDEFEND"
Format of VSAFE/VWATCH record:
Offset Size Description (Table 2071)
00h DWORD ???
04h WORD offset of ??? in record's segment
VSAFE 2.0 sets byte at +01h to 56h or 58h
VWATCH 2.1 sets byte at +02h to 56h or 58h
06h 2 BYTEs ???
08h BYTE ??? (01h/other)
--------v-2F6284BX0000-----------------------
INT 2F U - PC Tools v7-8 DATAMON, v9+ DPROTECT - INSTALLATION CHECK
AX = 6284h
BX = 0000h
CX = 0000h
Return: AX = segment of resident code
BX = 5555h
CX = 5555h
Note: also supported by DOS 6 UNDELETE which is licensed from PC Tools
SeeAlso: AX=6284h/BX=0001h,INT 16/AX=FFA3h
--------v-2F6284BX0001-----------------------
INT 2F U - PC Tools v7-8 DATAMON, v9+ DPROTECT - GET ???
AX = 6284h
BX = 0001h
CX = 0001h
Return: AX:BX -> ??? data (see #2072)
CX = BX
SeeAlso: AX=6284h/BX=0000h
Format of DPROTECT data for v9.0:
Offset Size Description (Table 2072)
00h 5 BYTEs ???
05h WORD resident code segment (may be segment of DWORD at +03h)
07h DWORD -> FAR function to sound alert tone
???
--------v-2F6284BX0002-----------------------
INT 2F U - PC Tools v7-8 DATAMON, v9+ DPROTECT - GET OPTIONS
AX = 6284h
BX = 0002h
CX = 0002h
Return: AX = options (see #2073)
BX = ??? (0000h for v9)
CX = AX
DX = BX
Note: also supported by DOS 6 UNDELETE which is licensed from PC Tools
SeeAlso: AX=6284h/BX=0000h,AX=6284h/BX=0003h
Bitfields for DATAMON/DPROTECT options:
Bit(s) Description (Table 2073)
1 ???
12 disabled
13 using Delete Sentry
14 using Delete Tracker
--------v-2F6284BX0003-----------------------
INT 2F U - PC Tools v7-8 DATAMON, v9+ DPROTECT - SET OPTION??? FLAGS
AX = 6284h
BX = 0003h
CX = flags (see #2074)
DX = flags
bit 15: ???
Note: v9 DPROTECT only checks bit 12 of CX, and ignores DX entirely
SeeAlso: AX=6284h/BX=0002h
Bitfields for DATAMON/DPROTECT CX flags:
Bit(s) Description (Table 2074)
3 ???
5 ???
10 ???
12 disable DATAMON/DPROTECT
--------v-2F6284BX0004-----------------------
INT 2F U - PC Tools v8 DATAMON, v9+ DPROTECT - ???
AX = 6284h
BX = 0004h
CX = 0004h
Return: AX = 5555h
BX = ??? (0800h)
CX = ??? (FCCCh for v8, FCCBh for v9)
--------V-2F6400-----------------------------
INT 2F - SCRNSAV2.COM - INSTALLATION CHECK
AX = 6400h
Return: AL = installation state
00h not installed
FFh installed
Program: SCRNSAV2.COM is a screen saver for PS/2s with VGA by Alan Ballard
SeeAlso: INT 10/AX=5555h,INT 14/AX=AA01h
Index: screen saver;SCRNSAV2
--------N-2F7000-----------------------------
INT 2F - License Service API - INSTALLATION CHECK
AX = 7000h
CX = license server index (0000h to 001Fh)
Return: AL = status
00h not installed
FFh installed
Notes: The License Service API is being maintained by Microsoft but is being
supported by a large number of companies including Apple, Banyan,
DEC, HP, Lotus, Microsoft, Novell, Software Publishers Association,
and Wordperfect (not a complete list!)
Each license service provider must search for the next free index
slot to use
SeeAlso: AX=7001h,AX=7003h,AX=7004h,AX=7005h
--------N-2F7001-----------------------------
INT 2F - License Service API - REQUEST LICENSE
AX = 7001h
CX = license server index (0000h to 001Fh)
DS:DX -> SLSREQUEST structure (see #2075)
Return: AX = status
0000h success
else provider error code
ES:BX = provider specific handle for the license context
SeeAlso: AX=7002h,AX=7004h,AX=7005h
Format of License Service SLSREQUEST structure:
Offset Size Description (Table 2075)
00h DWORD (ret) status code
04h DWORD (ret) handle identifying context
08h DWORD (call) address of Publisher string
0Ch DWORD (call) address of Product string
10h DWORD (call) address of Version string
14h DWORD units required
18h DWORD address of comment string
1Ch DWORD address of SLSCHALLENGE structure (see #2076)
Format of License Service SLSCHALLENGE structure:
Offset Size Description (Table 2076)
00h DWORD algorithm (currently always 1)
04h DWORD secret to be challenged (1-255)
08h DWORD size of challenge in bytes (1-255)
0Ch N BYTEs challenge data
--------N-2F7002-----------------------------
INT 2F - License Service API - RELEASE LICENSE
AX = 7002h
CX = license server index (0000h to 001Fh)
DS:DX -> SLSRELEASE structure (see #2077)
ES:BX = provider specific handle for the license context
Return: AL = status
00h not installed
FFh installed
SeeAlso: AX=7001h,AX=7005h
Format of License Service SLSRELEASE structure:
Offset Size Description (Table 2077)
00h DWORD handle indentifying license context
04h DWORD total units consumed
08h DWORD address of comment string
--------N-2F7003-----------------------------
INT 2F - License Service API - UPDATE
AX = 7003h
CX = license server index (0000h to 001Fh)
DS:DX -> SLSUPDATE structure (see #2078)
ES:BX = provider specific handle for the license context
Return: AL = status
00h not installed
FFh installed
SeeAlso: AX=7004h,AX=7005h
Format of License Service SLSUPDATE structure:
Offset Size Description (Table 2078)
00h DWORD (ret) status code
04h DWORD (call) handle identifying license context
08h DWORD (call) total units consumed
0Ch DWORD additional units required
10h DWORD address of comment string
14h DWORD address of SLSCHALLENGE structure (see #2076)
--------N-2F7004-----------------------------
INT 2F - License Service API - GET ERROR
AX = 7004h
CX = license server index (0000h to 001Fh)
DS:DX -> SLSGETERROR structure (see #2079)
ES:BX = provider specific handle for the license context
Return: AL = status
00h not installed
FFh installed
SeeAlso: AX=7000h,AX=7001h
Format of License Service SLSGETERROR structure:
Offset Size Description (Table 2079)
00h DWORD (ret) status code
04h DWORD handle identifying license context
08h DWORD error code
0Ch DWORD buffer size in bytes
10h N BYTEs data buffer
--------N-2F7005-----------------------------
INT 2F - License Service API - QUERY LICENSE
AX = 7005h
CX = license server index (0000h to 001Fh)
DS:DX -> SLSQUERY structure (see #2080)
ES:BX = provider specific handle for the license context
Return: AL = status
00h not installed
FFh installed
SeeAlso: AX=7001h,AX=7002h
Format of License Service SLSQUERY structure:
Offset Size Description (Table 2080)
00h DWORD (ret) status code
04h DWORD handle identifying license context
08h DWORD information index
0Ch DWORD buffer size in bytes
10h N BYTEs data buffer
--------K-2F7041BX4B70-----------------------
INT 2F U - HP 200LX - KEY200 - INSTALLATION CHECK
AX = 7041h
BX = 4B70h
Return: BX = 7965h if keyboard remapper KEY200.COM installed
--------d-2F7200-----------------------------
INT 2F - SRDISK v1.30+ - INSTALLATION CHECK
AX = 7200h
Return: AL = FFh if installed
ES = segment of device driver header (see #2081)
Program: SRDISK is a freeware resizeable RAMdisk by Marko Kohtala
SeeAlso: AX=7201h
Format of SRDISK device driver header:
Offset Size Description (Table 2081)
00h 10 BYTEs same as standard device driver header
(see #0953 at INT 21/AH=52h)
0Ah BYTE number of subunits (drives) supported by driver
0Bh 3 BYTEs signature "SRD"
0Eh 4 BYTEs memory type string ("XMS "/"EMS ")
12h 4 BYTEs ASCII driver version string "N.NN"
16h BYTE 00h
17h BYTE configuration format version (currently 00h or 01h)
18h WORD offset of drive configuration data
SeeAlso: #0953
--------d-2F7201-----------------------------
INT 2F - SRDISK v2.02 - GET CODE/DATA SEGMENT
AX = 7201h
Return: AL = FFh if installed
ES = segment of device driver header (see #2081)
Program: SRDISK is a freeware resizeable RAMdisk by Marko Kohtala
SeeAlso: AX=7200h
--------N-2F7A00-----------------------------
INT 2F - Novell NetWare - LOW-LEVEL API (IPX) INSTALLATION CHECK
AX = 7A00h
Return: AL = status
00h not installed
FFh installed
ES:DI -> FAR entry point for routines accessed exclusively
through INT 7A in NetWare versions through 2.0a.
Call with same values as INT 7A
ES:BX -> two bytes containing IPX major/minor version
(IPXODI v2.12; BX unchanged by older IPX drivers)
SeeAlso: AX=7AFFh/BX=0000h,AX=D800h,INT 64"Novell",INT 7A"Novell"
--------N-2F7A10-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - GET TBMI STATUS
AX = 7A10h
Return: DH = major TBMI version number
DL = minor TBMI version number (01h for v1.1)
CX = segment address of TBMI resident part
BX = status word of TBMI (see #2082)
Note: TBMI is the Task-Switched Buffer Manager Interface
SeeAlso: AX=7A11h,AX=7A12h,AX=7A13h,AX=7A14h
Bitfields for NetWare TBMI status word:
Bit(s) Description (Table 2082)
0 INT2F intercepted by TBMI
1 INT7A intercepted by TBMI
2 INT64 intercepted by TBMI
3-14 reserved or unused ???
15 outstanding task ID was detected
--------N-2F7A11-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - GET INT2F HANDLERS
AX = 7A11h
Return: ES:BX -> old INT 2F handler
DS:DX -> TBMI INT 2F handler
SeeAlso: AX=7A10h,AX=7A12h,AX=7A13h,AX=7A1Ah
--------N-2F7A12-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - GET INT64 HANDLERS
AX = 7A12h
Return: ES:BX -> old INT 64 handler
DS:DX -> TBMI INT 64 handler
SeeAlso: AX=7A10h,AX=7A11h,AX=7A13h
--------N-2F7A13-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - GET INT7A HANDLERS
AX = 7A13h
Return: ES:BX -> old INT 7A handler
DS:DX -> TBMI INT 7A handler
SeeAlso: AX=7A10h,AX=7A11h,AX=7A12h
--------N-2F7A14-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - GET STATISTICS
AX = 7A14h
CX = statistic to retrieve
0000h available diagnostic functions???
Return: CX = maximum available function??? (000Ch for v2.0)
0001h buffers in use
Return: CX = TBMI buffers currently in use
0002h maximum buffers used
Return: CX = maximum number of buffers ever in use
0003h unavailable buffers
Return: CX = count of unavailable TBMI buffers
0004h old interrupt usage
Return: CX = TBMI accesses to intercepted old vectors INT 2F,
INT 64, and INT 7A
0005h far call usage
Return: CX = TBMI accesses to IPX/SPX far call handler (not
including internal accesses)
0006h task buffering
Return: CX = TBMI task buffering status (enabled/disabled or
disable/enable switch count???)
0007h current task ID
Return: CX = TBMI current task ID number (0000h if ???)
0008h outstanding ID count
Return: CX = number of outstanding TBMI IDs
0009h configured ECBs
Return: CX = number of TBMI Event Control Blocks configured
000Ah configured data ECBs
Return: CX = number of TBMI data ECBs configured
000Bh configured sockets
Return: CX = number of TBMI sockets configured (from NETCFG)
000Ch current sockets
Return: CX = number of TBMI sockets currently in use
Return: BX = maximum supported subfunction (000Ch)
SeeAlso: AX=7A10h
--------N-2F7A15-----------------------------
INT 2F OU - Novell NetWare - TBMI v1.1 only - RESET ???
AX = 7A15h
Return: BX = new value of ???
Desc: set ??? to its default value
Note: this call is a NOP under TBMI v2.0 (TBMI2)
SeeAlso: AX=7A17h
--------N-2F7A16-----------------------------
INT 2F OU - Novell NetWare - TBMI v1.1 only - ???
AX = 7A16h
CX = ???
???
Return: ???
Note: this call is a NOP under TBMI v2.0 (TBMI2)
--------N-2F7A17-----------------------------
INT 2F OU - Novell NetWare - TBMI v1.1 only - ???
AX = 7A17h
???
Return: BX = old value of ???
CX = new value of ???
Note: this call is a NOP under TBMI v2.0 (TBMI2)
SeeAlso: AX=7A15h
--------N-2F7A18-----------------------------
INT 2F U - Novell NetWare - TASKID v1.0 - INSTALLATION CHECK
AX = 7A18h
Return: AL = FFh if installed
BX = configuration flags (see #2083)
CX = resident code segment
SeeAlso: AX=7A10h
Bitfields for NetWare TASKID configuration flags:
Bit(s) Description (Table 2083)
0 INT 2F hooked
3 INT 08 hooked
other unused
--------N-2F7A19-----------------------------
INT 2F U - Novell NetWare - TASKID v1.0 - GET INT 08 HANDLERS
AX = 7A19h
Return: AL = FFh
DS:DX -> TASKID INT 08 handler
ES:BX -> original INT 08 handler
--------N-2F7A1A-----------------------------
INT 2F U - Novell NetWare - TASKID v1.0 - GET INT 2F HANDLERS
AX = 7A1Ah
Return: AL = FFh
DX:DX -> TASKID INT 2F handler
ES:BX -> original INT 2F handler
SeeAlso: AX=7A11h,AX=7A19h
--------N-2F7A1B-----------------------------
INT 2F U - Novell NetWare - TASKID v1.0 - GET DIAGNOSTICS INFORMATION
AX = 7A1Bh
CX = desired information
0000h supported functions
0001h TASKID ID number
Return: CX = ID number
0002h set-ID count
Return: CX = ID set count
Return: AL = FFh
BX = highest supported subfunction number (0002h)
SeeAlso: AX=7A14h,AX=7A18h
--------N-2F7A1C-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - ???
AX = 7A1Ch
BP = ???
CX:DX = ???
Return: AX = 70FFh
--------N-2F7A1D-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - ???
AX = 7A1Dh
???
Return: ES = ???
???
SI destroyed
--------N-2F7A1E-----------------------------
INT 2F U - Novell NetWare - TBMI v1.1+ - ???
AX = 7A1Eh
ES:SI -> ???
???
Return: ???
--------N-2F7A20BX0000-----------------------
INT 2F - Novell NetWare - Adv NetWare 4.0 DOS Requester - GET VLM CALL ADDRESS
AX = 7A20h
BX = 0000h
Return: AX = 0000h on success (installed)
ES:BX -> far call address for DOS Requester (see #2084)
Notes: the DOS Requester replaces the NetWare Shell (ANETx, NETx) on
NetWare LAN's as of the release of Advanced NetWare 4.0 (1993). It
is backward compatible with NetWare 2.1x through 3.11 servers as
well. Note that there was a NetWare 4.0 in the early 1980's, which
can cause confusion.
this call is used as the installation check by VLM.EXE, which is the
loader for all the modules of the DOS Requester
.VLMs are standard old .EXE format executables whose normal entry point
merely terminates to prevent loading from the command line. The
real entry point is found by looking at the VLM header at the
beginning of the load image (see #2087)
Index: installation check;NetWare 4.0 DOS Requester
(Table 2084)
Call DOS Requester entry point with:
STACK: WORD destination function
WORD destination VLM ID (see #2086)
WORD source VLM ID (0000h = application program)
registers as appropriate for function
Return: AX = status code (0000h,8811h,8846h,8848h,8853h) (see #2085)
other registers as appropriate for function
STACK popped
BP destroyed
(Table 2085)
Values for VLM status code:
0000h successful
88xxh error generated by requester
8801h invalid or non-attached connection handle
8803h cannot add CDS
8804h bad path
8805h error sending or receiving NCP packets
8811h nonexistent function called
8836h attempted function with invalid parameter
8846h ???
8848h non-loaded or nonexistent VLM called
884Dh no more SFT entries (too many handles)
8850h too many reply fragments
8853h ???
89xxh error generated by server
low byte = return code from server (see also #1221,#1255)
8900h server successful
8901h out of disk space
897Eh NCP boundary check failed
897Fh ???
8980h lock failed; file in use
8981h out of handles
8982h no open privileges
8983h hard (non-correctable) I/O error
8984h no creation privileges
8985h no create/delete privileges
8986h attempted to create a file which already exists read-only
8987h filename error during creation (wildcards in name)
8988h invalid file handle
8989h no search privileges
898Ah no deletion privileges
898Bh no rename privileges
898Ch no modify privileges
898Dh some affected files are in use
898Eh all affected files are in use
898Fh some affected files are read-only
8990h all affected files are read-only; volume read-only
8991h some files could not be renamed because target names already exist
8992h all affected names exist
8993h no read privileges
8994h no write privileges
8995h file detached
8996h server out of memory
8997h no disk space for spool file
8998h disk map error; volume does not exist
8999h directory full
899Ah attempt to rename across volumes
899Bh bad directory handle
899Ch invalid path; no more trustees
899Dh no directory handles
899Eh bad filename
899Fh directory active
89A0h directory not empty
89A1h directory I/O error
89A2h I/O lock error
89A3h-89BEh ???
89BFh invalid name space
89C0h no account privileges
89C1h no account balance
89C2h credit limit exceeded
89C4h account disabled
89C5h login lockout (intruder detection activated)
89C6h no console rights
89C7h-89CFh
89D0h queue error
89D1h no queue
89D2h no queue server
89D3h no queue rights
89D4h queue full
89D5h no queue job
89D6h no job rights; unencrypted password
89D7h queue servicing error; duplicate password; bad account
89D8h queue not active; password too short
89D9h station not queue server; maximum logins exceeded
89DAh queue halted; bad login time
89DBh maximum queue servers; unauthorized login station
89DCh account disabled or expired
89DEh password expired (all grace logins used up)
89DFh password expired but login allowed (grace login)
89E0h-89E6h ???
89E7h no disk track
89E8h property is not an item property; write to group
89E9h member exists
89EAh no such member
89EBh property is not a set property
89ECh no such set
89EDh property exists
89EEh object exists
89EFh illegal name
89F0h illegal wildcard
89F1h invalid bindery security level
89F2h not allowed to read object
89F3h not allowed to write/rename object
89F4h not allowed to delete object
89F5h not allowed to create object
89F6h not allowed to delete property
89F7h not allowed to create property; attempt to use non-local drive
89F8h not allowed to write property; already attached to server
89F9h not allowed to read property; no free connection slots
89FAh temporary remap error; no more server slots
89FBh no such property; invalid parameters
89FCh no such object; internet packet request canceled; unknown file server
89FDh bad station number; lock collision
89FEh directory locked; bindery locked; timeout
89FFh general error; hard error; lock error
Note: some server-generated error codes have multiple interpretations; use
the one appropriate to the failing call
(Table 2086)
Values for VLM identifier:
0001h VLM.EXE Virtual Loadable Modules manager (see also #2089)
0010h CONN.VLM connection table manager (see also #2090)
0020h TRAN.VLM transport protocol multiplexor (see also #2094)
0021h IPXNCP.VLM transport protocol implementation using IPX (see #2096)
0022h TCPNCP.VLM TCP/IP transport
0030h NWP.VLM NetWare protocol multiplexor (see also #2098)
0031h BIND.VLM bindery
0032h NDS.VLM NetWare Directory Services (see also #2099)
0033h PNW.VLM Personal NetWare
0034h RSA.VLM RSA encryption for directory services re-authentication
0040h REDIR.VLM DOS redirector (see also #2101)
0041h FIO.VLM file I/O (see also #2103)
0042h PRINT.VLM printer redirector (see also #2105)
0043h GENERAL.VLM misc functions for NETx and REDIR (see also #2107)
0050h NETX.VLM NetWare shell compatibility (see also #2109)
0060h AUTO.VLM auto-reconnect/auto-retry
0061h SECURITY.VLM enhanced security module (see #2110)
0100h NMR.VLM NetWare management responder
09F2h DRVPRN.VLM Desktop SNMP Services - Drive/Printer Mappings
09F5h SAA.VLM SAA client API for Netware
09F6h IPXMIB.VLM SNMP IPX-monitoring Module???
09F7h PNWMIB.VLM Personal Netware SNMP Instrumentation Module
09F8h PNWTRAP.VLM Personal Netware SNMP Trap Module
09F9h MIB2PROT.VLM MIB-II Protocol Groups
09FAh MIB2IF.VLM MIB-II Interfaces Group
09FBh NVT.VLM ???
09FCh WSTRAP.VLM Desktop SNMP Services - Trap Module
09FDh WSREG.VLM Desktop SNMP Services - Registration Module
09FEh WSASN1.VLM Desktop SNMP Services - ASN.1 Module
09FFh WSSNMP.VLM Desktop SNMP Services - Agent Module
Format of VLM header:
Offset Size Description (Table 2087)
00h DWORD -> initialization entry point
04h DWORD -> VLM API entry point
08h DWORD -> ??? entry point
0Ch DWORD -> ??? entry point
10h DWORD -> ??? entry point
...
var DWORD 00000000h (end of entry point list)
4 BYTEs signature "NVlm"
WORD VLM identifier (see #2086)
---v1.20+ ---
1Eh WORD ???
20h WORD Transient Switch Count
22h WORD VLM Call Count
24h WORD Offset ControlBlocks (See #2088)
26h WORD Current VLMID
28h BYTE Memory Type
00h=Conventional 02h=EMS 04h=XMS
29h BYTE Modules Loaded
2Ah WORD BlockId
2Ch WORD Transient Block
2Eh WORD Global Segment
30h 3 DWORDs pointers to AsyncQueue head, tail, and s???
3Ch 3 DWORDs pointers BusyQueue head, tail, and s???
48h WORD ReEntrance Level
4Ah WORD Full Map Count
4Ch WORD ???
4Eh 80 BYTEs ASCIZ configuration file filename
Note: the number of entry points in the header is reported as "Func" in the
VLM /D display.
Format of VLM Control Block for VLM v1.20 [array]:
Offset Size Description (Table 2088)
00h WORD Flag
02h WORD VLM Identifier (See #2086)
04h WORD Func
06h WORD Maps
08h WORD number of times called
0Ah WORD ???
0Ch WORD Transient Segment
0Eh WORD Global Segment
10h WORD Address Low
12h WORD Address High
14h WORD TSegSize
16h WORD GSegSize
18h WORD SSegSize
1Ah BYTE VLMName[9] ASCIZ
Note: this information is shown in VLM /d under the dashed line. There are
as many 35-byte blocks as modules loaded
SeeAlso: #2087
(Table 2089)
Call VLM Manager (VLM.EXE, ID 0001h) with:
Func Description/Registers
01h VLM Notify
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h VLM Statistics
04h VLM internal use
BX = function
0000h get interrupt vector (calls INT 21/AH=35h)
0001h begin critical section (calls INT 2F/AX=1681h)
0002h end critical section (calls INT 2F/AX=1682h)
0003h ???
(Table 2090)
Call Connection Manager (CONN.VLM, ID 0010h) with:
Func Description/Registers
01h Conn Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h Conn Statistics
CX = length of buffer
ES:DI -> buffer for connection statistics (see #2091)
Return: AX = status (0000h successful)
04h Conn Alloc Handle
Return: AX = status (0000h successful)
CX = connection handle
05h Conn Validate Handle
CX = connection handle
Return: AX = 0000h if valid handle
06h Conn Free Handle
CX = connection handle
Return: AX = status (0000h successful)
07h Conn Get Entry Field
BH = connection parameter (see #2093)
CX = connection handle
DX = value if BH is non-array parameter
DH = offset in array if BH is array parameter
DL = number of bytes to copy if BH is array
ES:DI -> return buffer if BH is array
Return: AX = 0000h if successful
DL/DX = value if non-array parameter
DH = maximum number of bytes in buffer if array parameter
DL = number of bytes copied if array
BX destroyed
08h Conn Set Entry Field
BH = connection parameter (see #2093)
CX = connection handle
DL/DX = value if BH is non-array parameter
DH = offset in array if BH is array parameter
DL = number of bytes to copy if BH is array
DS:SI -> buffer if BH is array
Return: AX = 0000h if successful
DH = maximum number of bytes in buffer
DL = number of bytes copied
BX destroyed
09h Conn Reset Entry Field
BH = connection parameter (see #2093)
CX = connection handle
Return: AX = 0000h if successful
BX,DX destroyed
0Ah Conn Lookup Handle
BL = lookup type (00h equal, 40h not equal)
BH = connection parameter (see #2093)
CX = connection handle, 0000h if first
DL/DX = value if BH is non-array parameter
DH = offset in array if BH is array parameter
DL = number of bytes to copy if BH is array
DS:SI (ES:DI???) -> buffer if BH is array
Return: AX = 0000h if successful
CX = handle matching given parameters
0Dh Conn Name Lookup
CX = connection handle
ES:DI -> 49-byte buffer for server name or 0000h:0000h
Return: AX = 0000h if successful
BX = length of server name
ES:DI buffer filled if pointer not 0000h:0000h
0Eh Conn Name To Handle
DS:SI -> uppercased server name
CX = length of server name, 0000h if ASCIZ name
Return: AX = error code or 0000h if successful
CX = connection handle if successful
0Fh Conn Get Num Connections
Return: AX = status (0000h if successful)
DX = number of connections
CX = segment of connection table
first entry in table (See #2092)
Format of VLM connection statistics:
Offset Size Description (Table 2091)
00h WORD total length of statistics record (including this word)
02h WORD number of connection handles allocated
04h WORD average name length (configured in NET.CFG)
06h WORD maximum number of tasks (configured in NET.CFG)
08h WORD number of failed "allocate handle" calls
0Ah WORD number of failed "add name" calls
0Ch WORD number of failed task calls
Note: some versions of the NetWare requester reportedly do not implement
this correctly
SeeAlso: #2090
Format of NetWare VLM Connection Table [array]:
Offset Size Description (Table 2092)
00h WORD Protocol VLMid 0032(NDS) 0031(BIND) Func 07 equiv.
0033(PNW) 0000(unused) bh=01h
02h BYTE (connection status)
bit 6: connection locked bh=16h
bit 5: authenticated bh=03h
bit 4: permanent bh=02h
bit 2: broadcast msg waiting bh=12h
03h BYTE (connection capabilities)
bit 5: Large Internet Packets none
bit 3: Packet Burst Reset bh=07h
bit 2: Max I/O bh=06h
bit 1: SFT3 change bh=05h
bit 0: Packet Burst Support bh=04h
04h WORD reference count bh=09h
06h WORD soft resource count bh=15h
08h BYTE NCP Order Number bh=0Eh
09h BYTE Server security options bh=14h
bit 0: CRC enabled
bit 1: packet signing required
bit 5: packet signing enabled
0Ah BYTE OS Major Version bh=08h
0Bh BYTE OS Minor Version bh=08h
0Ch WORD Hops to Server bh=0Ah
0Eh WORD Maximum Packet Size for this connection bh=0Bh
10h WORD LIP Parameters bh=13h
12h WORD NCP Request Type bh=10h
14h BYTE NCP Sequence bh=0Ch
15h WORD Connection Number bh=0Dh
17h BYTE ??? none
18h WORD Transport VLMid 21(IPXNCP) 22(TCPNCP) bh=0Fh
1Ah BYTE Node Address[4] bh=11h
1Eh BYTE Network[6] bh=11h
24h BYTE Socket[2] bh=11h
26h BYTE Local Target[6] bh=11h
2Ch WORD Round Trip Time bh=11h
2Eh WORD ??? none
SeeAlso: #2090
(Table 2093)
Values for NetWare Connection Manager CEI (Connection Entry Information):
number flags description
00h FR error
01h WL VLM id of transport protocol (NDS/BIND/PNW)
00h = wildcard
02h FR permanent flag (01h if connection is permanent)
03h F authenticated flag (01h if connection is authenticated)
04h F packet burst supported
05h FR SFT3 change status
06h FR connection needs maximum I/O transmission
07h FR packet burst reset needed
08h W server version
09h W reference count (tasks using connection, 00h = dynamic)
0Ah W distance to server associated with connection
0Bh W maximum packet size supported by transport protocol
0Ch B NCP sequence number
0Dh W connection number
0Eh B NCP order number
0Fh WL VLM id for transport protocol
00h = wildcard, 21h = IPX, 22h = TCP
10h W NCP request type
11h A transport specific buffer
12 byte server address
6 byte router address
2 byte round trip time
12h FR broadcast message waiting
13h W large internet packets supported
14h B security options
bit 0: CRC enabled
bit 1: packet signing enabled
bit 5: packet signing active
15h W soft resource count
16h FR connection locked
Note: flag meanings
F=flag value
B=byte value
W=word value
A=array
R=resettable
L=settable only before authentication
others=read only
SeeAlso: #2090
(Table 2094)
Call TRAN.VLM (VLM ID 0020h) with:
Func Description/Registers
01h TRAN Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h TRAN Statistics
06h TRAN Request Reply (see INT 21/AH=F2h)
AL = request code (see #1391 at INT 21/AH=F2h)
BH = error handler flag
00h default error handler
01h return network errors to caller
02h handle network errors in requester
BL = request list length (max 5 fragments) (see #2095)
CX = connection handle
DH = 00h (reserved)
DL = reply list length (max 5 fragments) (see #2095)
DS:SI -> address list (each element is DWORD address + WORD length)
ES:DI -> address list
Return: AX = error code, 0000h if successful
BX,DX destroyed
reply buffer updated if successful
08h TRAN Schedule/Cancel Event
09h TRAN Get Max Phys Size
??? = subfunction
00h get maximum node size
01h get maximum route size to specified server
0Ah TRAN Broadcast Mux
Format of TRAN.VLM request/reply fragment descriptor (array):
Offset Size Description (Table 2095)
00h DWORD address of buffer
04h WORD length of buffer
(Table 2096)
Call IPXNCP.VLM (VLM ID 0021h) with:
Func Description/Registers
01h IPX Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h IPX Statistics
CX = length of buffer
ES:DI -> buffer for statistics (see #2097)
Return: AX = status (see #2085)
06h IPXNCP Request Reply???
functionally equivalent to Tran Request Reply???
Format of NetWare IPX statistics:
Offset Size Description (Table 2097)
00h WORD size of statistics, including this word
02h DWORD number of TRAN Request Reply calls made
06h WORD number of user aborts
08h WORD number of user retries
0Ah WORD IPX receive errors
0Ch WORD IPX send errors
0Eh WORD number of unrecognized responses
10h WORD number of bad connection numbers in requests
12h WORD number of bad sequence responses
14h WORD receive buffer overflows
16h WORD number of times route to attached server was lost
18h WORD number of times server responded "busy"
1Ah WORD number of unknown "NCPRepCompCode" values
1Ch WORD number of bad connection numbers in responses
1Eh WORD padding for NETX compatibility
20h WORD padding for NETX compatibility
22h WORD number of attach requests to server without route
24h WORD number of times server responded to attach without slot
26h WORD number of times a server went down during a request
28h DWORD same-server optimizations
2Ch WORD local route changes
2Eh WORD IPX CRC errors
30h WORD number of user fails
32h BYTE flag: CRCs enabled
33h BYTE flag: LIP enabled
34h BYTE flag: configurable NET error handler
SeeAlso: #2096
(Table 2098)
Call NWP.VLM (VLM ID 0030h) with:
Func Description/Registers
01h NWP Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h NWP Statistics
04h NWP Connect
05h NWP Disconnect
06h NWP Attach
08h NWP Login
09h NWP Logout
0Ah NWP Get Bindery Object/Get Message Handler
BX = subfunction
0002h set workstation's broadcast message mode
0003h get object ID for object name
0004h get object name for object ID
0005h retrieve broadcast message
0Ch NWP context (passed through to NDS.VLM's function 0Ch) (see #2099)
0Eh NWP Ordered Send To All
0Fh NWP Preferred Handler
BX = subfunction
0000h get preferred connection name
DX = VLM ID (NDS/BIND/PNW)
ES:DI -> 49-byte buffer for connection name
Return: ES:DI buffer filled
0001h set preferred connection name
DX = VLM ID (NDS/BIND/PNW)
CX = length of connection name (may be 0000h, max 48)
DS:SI -> name of preferred connection
0002h get preferred connection ID
DX = VLM ID (NDS/BIND/PNW)
Return: AX = status
CX = connection handle if successful
0003h get server address
CX = connection handle or 0000h
DS:SI -> name to be resolved
ES:DI -> 12-byte buffer for server address
10h NWP ???
BX = subfunction
0001h get security flags (see also INT 21/AX=B301h)
Return: BX:CX indicates signature level
= 0100h:0000h if signature level=0
= 0300h:0000h if signature level=1
= 0302h:0000h if signature level=2
= 0302h:0202h if signature level=3
0002h create session keys (see also INT 21/AX=B302h)
CX = server connection handle
DS:SI -> 24-byte input buffer
0004h set security flags (see also INT 21/AX=B304h)
BL:CL = new flags
0006h renegotiate security level (see also INT 21/AX=B306h)
CX = server connection number (01h-08h)
(Table 2099)
Call NDS.VLM (VLM ID 0032h) with:
Func Description/Registers
01h NDS Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h NDS Statistics
06h NDS Attach
CX = allocated connection handle
DS:SI -> server address
08h NDS Fragment Requst
Return: AX = 8836h (invalid parameter)
Note: this function was documented but does not work
0Ch NDS context
BX = subfunction
0000h get default name context
CX = length of buffer for default context
ES:DI -> buffer to receive name
Return: ES:DI buffer filled
0001h set default context
CX = length of new default context name
DS:SI -> context name
0002h read from TDS
CX = reply buffer length
DX = 0110h ???
SI = offset in TDS
ES:DI -> reply buffer
0003h write to TDS
0005h "NWDSChangeResourceConnection/Lock Connection"
CX = connection handle
DL = subfunction (00h-09h)
04h = NWDSChangeResourceOnConnection
07h = NWDSChangeResourceOnConnection
08h = NWDSLockConnection
0006h NDS change connection state (internal)
CX = connection handle
AL = 00h or 01h
0007h "NWDSSetMonitoredConnection"
AX = subfunction
0001h get monitored connection
Return: CX = connection handle???
0002h set monitored connection
CX = connection handle???
0008h send NDS request
AX = NDS function
CX = connection handle
DS:SI -> request buffer descriptor (see #2100)
ES:DI -> reply buffer descriptor (see #2100)
000Ah set NDS CEI Info
DL = buffer length
DS:SI -> input buffer
Format of NetWare NDS request/reply buffer descriptor:
Offset Size Description (Table 2100)
00h DWORD -> buffer
04h WORD length of buffer in bytes
SeeAlso: #2099
(Table 2101)
Call REDIR.VLM (VLM ID 0040h) with:
Func Description/Registers
01h Redir Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h Redir Statistics
04h Redir Build SFT (see INT 21/AH=B4h"NetWare")
CX = connection handle
ES:DI -> SFT build request (see #2102)
Return: AX = 0000h if successful
BX = DOS file handle
05h Redir DOS To NW Handle
08h Redir Specific
BX = 0000h get item
DS:SI -> ASCIZ string "LPTx" (x='1'-'9') or drive spec ("d:")
ES:DI -> 512-byte reply buffer for
"\\server\resource",00h,"path",00h
Format of NetWare SFT build request:
Offset Size Description (Table 2102)
00h 6 BYTEs NetWare handle
06h WORD reserved for internal use
08h 14 BYTEs ASCIZ filename
16h BYTE DOS file attributes
bit 7: file is shareable
17h BYTE reserved
18h LONG file size
1Ch WORD creation date
1Eh WORD last access date
20h WORD last update date
22h WORD last update time
(Table 2103)
Call File I/O FIO.VLM (VLM ID 0041h) with:
Func Description/Registers
01h FIO Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h FIO Statistics
CX = length of buffer
ES:DI -> buffer for statistics (see #2104)
Return: AX = status (0000h if successful)
buffer filled if successful
04h FIO Remote Copy
Format of NetWare FIO statistics:
Offset Size Description (Table 2104)
00h WORD length of statistics record (including this word)
02h WORD number of read requests
04h WORD number of write requests
06h WORD number of cache read hits
08h WORD number of cache write hits
0Ah WORD number of cacheable files with free blocks
0Ch WORD number of cacheable files without free blocks
0Eh WORD number of standard read requests
10h WORD number of standard write requests
12h WORD number of burst read requests
14h WORD number of burst write requests
16h BYTE flag: cache writes enabled
17h BYTE flag: true commits enabled
18h WORD number of cache blocks
1Ah WORD size of a cache buffer
1Ch WORD number of ECBs for packet bursts (0000h if bursts disabled)
SeeAlso: #2103
(Table 2105)
Call PRINT.VLM (VLM ID 0042h) with:
Func Description/Registers
01h Print Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h Print Statistics
04h Print Get/Set Data
BX??? = subfunction
00h set printer control flags
01h get printer control flags
02h set extended printer control flags
03h get extended printer control flags
05h Print Open Capture File
07h Print Get Num Of Printers
08h Print Redirection
BX = subfunction
0000h redirect device to queue
AX = length of queue name, 0000h to use queue ID
DS:SI -> uppercased ASCIZ queue name
ES:DI -> queue ID, 0000h:0000h to use queue name
0001h test whether device is redirected
0002h cancel redirection
0003h redirect device to file
AX = 0000h or 4E57h ('NW')
ES:DI -> ASCIZ path of file
0004h get extended redirection information (see #2106)
CX = connection handle
DX = printer (0=LPT1)
Return: AX = 0000h if successful
09h Print Flush And Close Job
0Ch Print Get/Set Banner Name
Format of PRINT.VLM standard print control information:
Offset Size Description (Table 2106)
00h BYTE PFStatus (reserved, 00h)
01h BYTE print flags (default 80h)
bit 2: release job for printing if capture interrupted
bit 3: suppress form feed
bit 4: notify
bit 6: text file
bit 7: print banner
02h BYTE tab size (01h-12h, default 08h)
03h BYTE number of copies (default 01h)
04h BYTE ???
05h BYTE form type to be mounted in printer (default 00h)
06h BYTE reserved (00h)
07h 14 BYTEs banner
15h BYTE capture printer (LPT) number
16h WORD capture timeout in seconds
18h BYTE job concatenation flag (00h or 01h, default 00h)
19h BYTE maximum lines per page (default 66)
1Ah BYTE ???
1Bh BYTE maximum characters per line (default 132)
1Ch BYTE ???
1Dh 13 BYTEs name of form to be mounted in printer
2Ah BYTE flag: capture active (00h or FFh, default 00h)
2Bh BYTE flag: capturing to file (00h or 01h, default 00h)
2Ch BYTE flag: timeout field is being decremented (default 00h)
2Dh DWORD -> printer setup string
31h DWORD -> printer reset string
35h BYTE reserved (01h)
36h BYTE flag: job has started printing (00h or FFh, default 00h)
37h BYTE flag: job placed in queue (00h or FFh, default 00h)
38h BYTE flag: PJobValid (00h or FFh, default 00h)
39h DWORD print-queue ID
3Dh BYTE low byte of print-job number (default 00h)
3Eh BYTE ???
3Fh BYTE number of chars in INT 17h print cache buffer (default 00h)
40h BYTE ???
41h BYTE high byte of print-job number (default 00h)
SeeAlso: #2105
(Table 2107)
Call GENERAL.VLM (VLM ID 0043h) with:
Func Description/Registers
01h Gen Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h Gen Statistics
CX = length of statistics buffer
ES:DI -> buffer for statistics (see #2108)
Return: AX = status (see #2085)
04h Gen Get/Set Primary
BX = subfunction
0001h get primary connection
CX = primary connection handle to be retrieved
Return: AX = status (see #2085)
CX = primary connection handle
0002h set primary connection
CX = primary connection handle to be stored
Return: AX = status (see #2085)
06h Gen Specific
BX = subfunction
0000h get command processor and master environment addresses
Return: DX = segment of master environment
ES:DI -> command processor's private COMSPEC= copy
0001h get default or primary connection
Return: AX = status (0000h successful)
CX = connection handle if successful
0002h last queue information
AL = operation
00h zap
01h set
02h get
DI:DX = queue file handle
CX = connection handle
Return: AX = status (0000h successful)
DI:DX = queue file handle
CX = connection handle or 0000h if queue info invalid
0003h get/set machine name(s)
AX = name type
00h get short machine name
02h get long machine name
04h set short machine name
06h set long machine name
08h get DOS name
0Ah set DOS name
ES:SI -> ASCIZ name if setting
Return: AX = status (0000h if successful)
ES:SI -> ASCIZ name if getting
0004h set per-task EXEC search mode
Return: AX = status (0000h if successful)
09h Gen Return Drive Info
BX = subfunction
0000h get first available drive
Return: AX = status (see #2085)
BX = drive letter of first drive
0001h get Lastdrive
Return: AX = status (see #2085)
CH = number lastdrive 1=A: - 1Ah=Z:
Format of NetWare GENERAL.VLM statistics:
Offset Size Description (Table 2108)
00h WORD size of statistics record, including this word
02h DWORD previous INT 21 vector
SeeAlso: #2107
(Table 2109)
Call NETX.VLM (VLM ID 0050h) with:
Func Description/Registers
01h NetX Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h NetX Statistics
(Table 2110)
Call SECURITY.VLM (VLM ID 0061h) with:
Func Description/Registers
01h Security Get Version
BX = function
0000h get version
Return: AX = status (see #2085)
BX = major version of VLM supported (0001h)
CX = minor version of VLM supported (0000h)
03h Security Statistics
04h ???
AL = subfunction
01h compute session key
DS:SI -> 24-byte input buffer
ES:DI -> 8-byte output buffer
--------N-2F7A20BX0001-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET VLM CallA ADDRESS
AX = 7A20h
BX = 0001h
Return: AX = 0000h if request was handled
ES:BX -> CallA entry point (see #2111)
(Table 2111)
Call VLM CallA entry point with:
AX = function
0000h submit
0001h cancel (not implemented)
ES:DI -> Overlay Asynchronous Control Block structure (see #2112)
Format of Overlay Asynchronous Control Block (OACB):
Offset Size Description (Table 2112)
00h DWORD link to next OACB, 0000h:0000h if last
04h DWORD callback address or 0000h:0000h
08h BYTE InUse flag (00h if complete)
09h BYTE flag, reserved for VLM use
0Ah WORD destination VLM
0Ch WORD destination function
0Eh WORD temporary storage for VLM.EXE
10h 6 BYTEs reserved
16h 6 DWORDs EAX,EBX,ECX,EDX,ESI,EDI
2Eh 4 WORDs DS,ES,FS,GS (FS and GS not used)
--------N-2F7A20BX0002-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET VLM MULTIPLEX ADDRESS
AX = 7A20h
BX = 0002h
Return: AX = 0000h
ES:BX -> VLM multiplex entry point (see #2113)
Note: for v1.10, this function is only available while VLM.EXE is loading
the .VLM modules, because ES is destroyed on return
(Table 2113)
Call DOS Requester entry point with:
BX = function???
0000h
DX = ???
DI = ???
BP = ???
0002h
CX = ???
0003h
DX = ???
BP = ???
0006h
AH = subfunction???
AL = ???
STACK: variable (0, 4, 10, 14 bytes seen)
--------N-2F7A20BX0003-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET VLM PARSE API ADDRESS
AX = 7A20h
BX = 0003h
Return: AX = 0000h if request was handled
ES:BX -> VLM parse API entry point
--------N-2F7A20BX0004-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET VLM MULTICAST CALLOUT
AX = 7A20h
BX = 0004h
Return: AX = 0000h if request was handled
ES:BX -> VLM multicast data (see #2114)
Format of DOS Requester data:
Offset Size Description (Table 2114)
00h DWORD pointer to ??? (code)
04h 4 BYTEs ???
08h DWORD pointer to ??? (code) (see #2115)
???
(Table 2115)
Call offset 08h function with:
AL = function (00h-07h)
???
Return: ???
--------N-2F7A20BX0005-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET VLM INT 24 ADDRESS
AX = 7A20h
BX = 0005h
Return: AX = 0000h if request was handled
ES:BX -> VLM INT 24 handler
--------N-2F7A20BX0006-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET ??? ENTRY POINT
AX = 7A20h
BX = 0006h
Return: AX = 0000h if request was handled
ES:BX -> ??? entry point (RETF in v1.03 and v1.10)
--------N-2F7A20BX0007-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET ??? ENTRY POINT
AX = 7A20h
BX = 0007h
Return: AX = 0000h
ES:BX -> ??? entry point (RETF in v1.03 and v1.10)
--------N-2F7A20BX0008-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET ??? ENTRY POINT
AX = 7A20h
BX = 0008h
Return: AX = 0000h
ES:BX -> ??? entry point (RETF in v1.03 and v1.10)
--------N-2F7A20BX0080-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET ??? ENTRY POINT
AX = 7A20h
BX = 0080h
Return: AX = 0000h
ES:BX -> ??? entry point (RETF in v1.03 and v1.10)
Note: this function is identical to AX=7A20h/BX=0006h in v1.03 and v1.10
--------N-2F7A20BX0081-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET ??? ENTRY POINT
AX = 7A20h
BX = 0081h
Return: AX = 0000h
ES:BX -> ??? entry point (RETF in v1.03 and v1.10)
Note: this function is identical to AX=7A20h/BX=0007h in v1.03 and v1.10
--------N-2F7A20BX0082-----------------------
INT 2F - Novell NetWare - DOS Requester v1.03+ - GET ??? ENTRY POINT
AX = 7A20h
BX = 0082h
Return: AX = 0000h
ES:BX -> ??? entry point (RETF in v1.03 and v1.10)
Note: this function is identical to AX=7A20h/BX=0008h in v1.03 and v1.10
--------N-2F7A21-----------------------------
INT 2F C - Novell NetWare - DOS Requester - BROADCAST CALLBACK
AX = 7A21h
CX = server connection (FFFFh if message from Personal NetWare user)
interrupts disabled
Return: CX = 0000h if broadcast handled
interrupts disabled
Note: this function is only linked into INT 2F when INT 21/AH=DEh/DL=05h
has been issued
SeeAlso: AX=7A22h,AX=7A85h,INT 21/AH=DEh
--------N-2F7A22-----------------------------
INT 2F C - Novell NetWare - DOS Requester - BROADCAST/SFT3 INFORM
AX = 7A22h
DL = function
21h ('!') broadcast waiting for workstation
40h ('@') SFT3 server-change inform
BX = transport type
0021h IPX
0022h TCP
ES:SI -> transport-specific data block
(ECB for IPX, undefined for TCP)
interrupts disabled
Return: AX = 0000h if event handled, unchanged if not
interrupts disabled
Note: this callback is made from within a hardware interrupt handler; a
separate call to AX=7A21h is made once the system is in a safe
state for receiving the message
SeeAlso: AX=7A21h
--------N-2F7A2F-----------------------------
INT 2F U - Novell NetWare - IPXODI v2.12 - GET GNMA SUPPORT
AX = 7A2Fh
Return: AX = 0000h if supported and active
BX = support level (0001h)
ES:DI -> GNMA entry point (see #2116)
Program: GNMA is the Generic NetWare Management Agent
Note: IPXODI v2.12 is distributed as part of the Personal NetWare system
bundled with Novell DOS 7
SeeAlso: INT 7A/BX=001Fh
(Table 2116)
Call IPXODI GNMA entry point with:
BX = function
0000h ???
ES:SI -> ??? data
0001h ???
AX = ???
Return: ES:SI -> ??? data
0002h get ??? address
Return: ES:SI -> ??? buffer
0003h send SPX packet???
AL = ???
CX = ???
DX = ???
SI = ???
Return: ??? (registers from a call to INT 7A/BX=0016h)
Return: BX corrupted
--------N-2F7A2FBX0EDC-----------------------
INT 2F U - Personal NetWare - HRMIB - UNINSTALL
AX = 7A2Fh
BX = 0EDCh ('EDC' = Novell European Development Center)
Return: ???
SeeAlso: AX=7AA0h
--------N-2F7A40-----------------------------
INT 2F U - Novell NetWare - TCP/IP Protocol Stack - INSTALLATION CHECK
AX = 7A40h
Return: AX = 7AFFh if installed
BX = ??? bit flags (see #2117)
CX = version (CH=major, CL=minor)
DX = 0000h
ES:DI -> entry point for TCP/IP stack (see #2118)
Notes: Novell's LAN Workplace for DOS TCPIP.EXE also supports this interface
this function is also supported by the Beame&Whiteside BWLWP40 shim,
but it only returns AL and ES:DI, and does not support AX=7A41h
SeeAlso: AX=7A41h,INT 15/AX=DE2Eh,INT 60"Excelan"
Bitfields for returned BX:
Bit(s) Description (Table 2117)
0 ???
1 ???
15-2 reserved???
(Table 2118)
Call NetWare TCP/IP entry point with:
ES:SI -> parameter block (see #2119)
Return: ES:SI parameter block updated
Format of NetWare TCP/IP parameter block:
Offset Size Description (Table 2119)
00h 4 BYTEs ???
04h WORD (ret) ???
06h WORD (ret) ???
08h DWORD -> FAR routine called if bit 7 of function code set
0Ch BYTE flags???
0Dh 7 BYTEs ???
14h BYTE (ret) ???
15h BYTE (call) function code (bit 7 set if ???) (see #2120)
16h BYTE socket number
17h BYTE (ret) result or error code
18h 4 WORDs parameter words 0 to 3 (see #2120 for usage)
20h WORD length of packet sent/received
22h WORD number of pointer/length pairs following
24h 6N BYTEs buffer descriptors, each
Offset Size Description
00h DWORD pointer to buffer
04h WORD length of buffer
(Table 2120)
Values for NetWare TCP/IP function code:
01h "accept"
02h "bind"
03h close socket
Call: socket number field set
04h "connect"
05h get IP address
Call: socket number field set to 0000h
Return: parameter words 1 and 2 contain caller's IP address
06h get hardware address
07h "getpeername"
08h get socket name
0Ah get netmask
0Bh "ioctl"
0Ch "listen"
0Dh "select"
10h "shutdown"
11h open socket
Call: socket number field set to 0000h
parameter word 0 = desired protocol (6 = TCP, 17 = UDP)
Return: socket number set
12h "read"
13h "recvfrom"
Call: socket number set
packet length and buffer descriptors set
Return: packet length and receive buffers updated
parameter word 1 = source port number
parameter words 2 and 3 = source IP address
14h "write"
15h "sendto"
Call: socket number set
flags field = ???
parameter word 0 = 0000h
parameter word 1 = destination port number
parameter words 2 and 3 = destination IP address
packet length and buffer descriptors set
16h get BOOTP data
Note: these functions are based on the Unix socket interface
--------N-2F7A41-----------------------------
INT 2F - Novell NetWare - TCP/IP Protocol Stack - WINDOWS SUPPORT???
AX = 7A41h
ES:DI -> FAR entry point for ??? (will be called with BX=1,2,3,4)
Return: AX = 7AFFh if supported
BX = ??? (see #2117)
CX = version (CH=major, CL=minor)
DX = 0000h
ES:SI -> DWORD containing passed value of ES:DI
ES:DI -> entry point for TCP/IP stack
Notes: Novell's LAN Workplace for DOS TCPIP.EXE also supports this interface
the pointer which is set to ES:DI is cleared to 0000h:0000h when
a Windows exit broadcast is received
SeeAlso: AX=7A40h
--------N-2F7A42-----------------------------
INT 2F - Novell NetWare - TCPIP.EXE v4.1 - GET ??? ENTRY POINT
AX = 7A42h
Return: AX = 7AFFh if supported
ES:DI -> ??? entry point (see #2121)
(Table 2121)
Call NetWare TCPIP.EXE entry point with:
DX = ???
ES:DI -> ??? (see #2122)
Return: AX = 0000h
other registers destroyed
Format of data buffer:
Offset Size Description (Table 2122)
00h WORD offset of WORD ??? or 0000h
02h WORD offset of DWORD ??? or 0000h
04h WORD offset of DWORD ??? or 0000h
--------N-2F7A43-----------------------------
INT 2F - Novell NetWare - TCPIP.EXE v4.1 - GET ???
AX = 7A43h
Return: AX = 7AFFh if supported
DX = offset of ???
SeeAlso: AX=7A44h
--------N-2F7A44-----------------------------
INT 2F - Novell NetWare - TCPIP.EXE v4.1 - SET ???
AX = 7A44h
DX = offset of ??? (see AX=7A43h)
Return: AX = 7AFFh if supported
SeeAlso: AX=7A43h
--------N-2F7A4C-----------------------------
INT 2F - Novell NetWare - TCPIP.EXE v4.1 - GET ???
AX = 7A4Ch
Return: AX = 7AFFh if supported
BX = ??? (0037h)
CX = ??? (001Ch)
--------N-2F7A4DBX0001-----------------------
INT 2F - Novell NetWare - ???
AX = 7A4Dh
BX = 0001h
ES:DI -> ???
Return: AL = FFh if ???
ES:DI -> ???
Note: called by NETBIOS.EXE v3.01
--------N-2F7A4E-----------------------------
INT 2F - Novell LAN Workplace for DOS - RARPD.EXE - INSTALLATION CHECK
AX = 7A4Eh
Return: AX = 7AFFh if installed
SeeAlso: AX=7A4Fh"RARPD"
--------N-2F7A4F-----------------------------
INT 2F - Novell LAN Workplace for DOS - RARPD.EXE - UNINSTALL
AX = 7A4Fh
Return: AX = 7AFFh if installed
DX,ES destroyed
Note: this call conflicts with SNMP.EXE (both RARPD and SNMP are supplied
with LAN Workplace for DOS!), such that running SNMP will uninstall
RARPD as SNMP checks whether it is already installed!
SeeAlso: AX=7A4Eh"RARPD",AX=7A4Fh/BX=0001h
--------N-2F7A4FBX0001-----------------------
INT 2F - Novell NetWare - SNMP.EXE - INSTALLATION CHECK
AX = 7A4Fh
BX = 0001h
Return: AX = 7AFFh if installed
Note: this call conflicts with RARPD.EXE (both SNMP and RARPD are supplied
with LAN Workplace for DOS!), such that running SNMP will uninstall
RARPD as SNMP checks whether it is already installed!
SeeAlso: AX=7A4Fh"RARPD",AX=7A4Fh/BX=0002h
--------N-2F7A4FBX0002-----------------------
INT 2F - Novell NetWare - SNMP.EXE - ???
AX = 7A4Fh
BX = 0002h
Return: AL = status
4Fh if failed
FFh if successful
SeeAlso: AX=7A4Fh/BX=0001h
--------N-2F7A80-----------------------------
INT 2F C - Novell NetWare - SHELL 3.01d BROADCAST - ABNORMAL EXIT
AX = 7A80h
Return: nothing
Notes: called on abnormal exit of the NetWare shell to notify other Novell
TSRs that it is unsafe to call the shell in the future.
must be passed through so that all interested programs see the exit
on receiving this call, IPXODI clears an internal pointer to a
default value; Novell's NETBIOS.EXE clears its INT 21h pointer to
0000h:0000h and stops calling it
SeeAlso: AX=7A81h
--------N-2F7A81-----------------------------
INT 2F C - Novell NetWare - SHELL 3.01d BROADCAST - SET SHELL INT 21 HANDLER
AX = 7A81h
CX:DX -> shell's INT 21h entry point
Return: nothing
Notes: the shell calls this function as it loads to allow interested TSRs
and drivers to make a local copy of the shell's entry point
must be passed through so that all interested programs see it
--------N-2F7A85-----------------------------
INT 2F C - Novell NetWare - shell 3.01 - BROADCAST INFORM
AX = 7A85h
CX = broadcast server number
Return: CX = 0000h if broadcast message handled by another program
CX unchanged if broadcast not handled
SeeAlso: AX=7A21h
--------N-2F7A90-----------------------------
INT 2F U - Novell NetWare - NETBIOS.EXE 3+ - INSTALLATION CHECK
AX = 7A90h
Return: AL = 00h if present
BX = ???
CX = PSP segment of NETBIOS resident code
SeeAlso: AX=7AFEh
--------N-2F7AA0-----------------------------
INT 2F U - Personal NetWare - HRMIB - ???
AX = 7AA0h
BX = function
0000h ???
0001h ???
Return: ???
SeeAlso: AX=7A2Fh/BX=0EDCh
--------N-2F7AC1-----------------------------
INT 2F - LAN HiJack - LHR - DISABLE???
AX = 7AC1h
Program: LAN HiJack is a NetWare utility by KDS Software which allows a user
to take over control of a workstation remotely; LHR is the program
run on the slave workstation
SeeAlso: AX=7AC8h,AX=7AC9h,AX=7ACFh
--------N-2F7AC2-----------------------------
INT 2F - LAN HiJack - LHR - SYNCHRONIZE SHIFT STATES???
AX = 7AC2h
Note: sets BIOS keyboard status byte to an internal variable
SeeAlso: AX=7AC3h,AX=7ACFh
--------N-2F7AC3-----------------------------
INT 2F - LAN HiJack - LHR - CLEAR ??? FLAG
AX = 7AC3h
SeeAlso: AX=7AC2h,AX=7ACFh
--------N-2F7AC8-----------------------------
INT 2F - LAN HiJack - LHR - ENABLE FUNCTIONS
AX = 7AC8h
BL = function(s) to enable (see #2123)
SeeAlso: AX=7AC1h,AX=7AC9h,AX=7ACFh
Bitfields for LAN HiJack function(s) to enable/disable:
Bit(s) Description (Table 2123)
0 ???
1 remote keyboard enabled
2 support remote's mouse
3-7 unused
--------N-2F7AC9-----------------------------
INT 2F - LAN HiJack - LHR - DISABLE FUNCTIONS
AX = 7AC9h
BL = function(s) to disable (see #2123)
SeeAlso: AX=7AC1h,AX=7AC8h
--------N-2F7ACA-----------------------------
INT 2F - LAN HiJack - LHJ - ???
AX = 7ACAh
BL = ???
Return: ???
Program: LAN HiJack is a NetWare utility by KDS Software which allows a user
to take over control of a workstation remotely; LHJ is the program
run on the controlling workstation
--------N-2F7ACB-----------------------------
INT 2F - LAN HiJack - LHJ - ???
AX = 7ACBh
BX = ???
Return: ???
Note: this function appears to be related to the keyboard
SeeAlso: AX=7ACCh
--------N-2F7ACC-----------------------------
INT 2F - LAN HiJack - LHJ - ???
AX = 7ACCh
BX = ???
Return: ???
Note: this function appears to be related to the mouse
SeeAlso: AX=7ACBh
--------N-2F7ACFBX0000-----------------------
INT 2F - LAN HiJack - LHR - INSTALLATION CHECK
AX = 7ACFh
BX = 0000h
Return: BX = segment of resident code if installed
Program: LAN HiJack is a NetWare utility by KDS Software which allows a user
to take over control of a workstation remotely; LHR is the program
run on the slave workstation
--------N-2F7AF0-----------------------------
INT 2F - Novell NetWare - DOSNP.EXE v1.30G - INSTALLATION CHECK
AX = 7AF0h
Return: AL = FFh if present
ES = 7AF0h
CX = PSP segment of resident code
--------N-2F7AF1-----------------------------
INT 2F - Novell NetWare - Access Server Driver - INSTALLATION CHECK
AX = 7AF1h
BL = sequence number (01h first driver, 02h second, 00h no driver)
Return: AX <> 7AF1h if present
BH = total number of drivers
---if BL nonzero on entry---
AL = number of ports provided by specified driver
ES:DI -> driver entry point
(see #2124,#2125,#2126,#2127,#2128,#2129,#2130,#2131)
ES:DX -> ID string
SeeAlso: INT 7A/BX=001Ch
(Table 2124)
Call Access Server driver "initialize port" function with:
AH = 01h
AL = port number (00h-0Fh)
ES:BX -> configuration parameter block (see #2137)
interrupts disabled
Return: CF clear if successful
CF set on error
SeeAlso: #2125
(Table 2125)
Call Access Server driver "get port status" function with:
AH = 02h
AL = port number (00h-0Fh)
interrupts disabled
Return: CF clear if successful
BL = transmitter status (see #2134)
BH = receiver status (see #2135)
DL = external status signals (see #2136)
CF set on error
interrupts disabled
SeeAlso: #2124,#2126,#2129
(Table 2126)
Call Access Server driver "get input from port" function with:
AH = 03h
AL = port number (00h-0Fh)
CX = size of data buffer
ES:BX -> buffer for data
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
CX = number of bytes read
Note: the driver will add a NUL to the buffer when a break signal is detected
SeeAlso: #2126,#2127
(Table 2127)
Call driver "send output data to port" function with:
AH = 04h
AL = port number (00h-0Fh)
CX = number of bytes to send
ES:BX -> buffer containing data
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
CX = number of bytes actually written
SeeAlso: #2126,#2128
(Table 2128)
Call driver "get I/O character counts" function with:
AH = 05h
AL = port number (00h-0Fh)
interrupts disabled
Return: CF clear if successful
BX = number of bytes pending transmission
CX = number of bytes available for reading
CF set on error
interrupts disabled
SeeAlso: #2126,#2127
(Table 2129)
Call driver "control XON/XOFF" function with:
AH = 06h
AL = port number (00h-0Fh)
DL = new state
(00h software flow control disabled, else enabled)
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
SeeAlso: #2130
(Table 2130)
Call driver "get error counts and statistics" function with:
AH = 07h
AL = port number (00h-0Fh)
ES:BX -> buffer for statistics (see #2138)
interrupts disabled
Return: CF clear if successful
ES:BX buffer filled
CF set on error
interrupts disabled
SeeAlso: #2131,#2132,#2133
(Table 2131)
Call driver "general request" function with:
AH = 08h
AL = port number (00h-0Fh)
DX = requested operations
bit 0: flush transmit buffers
bit 1: flush receive buffers
bit 4: define XON/XOFF characters
ES:BX -> XON/XOFF characters (see #2139) if DX bit 4 set
interrupts disabled
Return: CF clear if successful
CF set on error
interrupts disabled
(Table 2132)
Call driver "deadman timer management" function with:
AH = 09h
AL = port number (00h-0Fh)
BX = next time interval in seconds (0000h to disable timer)
interrupts disabled
Return: CF clear
interrupts disabled
SeeAlso: #2133
(Table 2133)
Call driver "get buffer sizes" function with:
AH = 0Ah
AL = port number (00h-0Fh)
interrupts disabled
Return: CF clear if successful
BX = size of transmit buffer
CX = size of receive buffer
CF set on error
interrupts disabled
SeeAlso: #2132
(Table 2134)
Values for Access Server transmitter status:
00h uninitialized
01h ready, not transmitting
02h transmitting
03h XOFF received
04h transmitting, buffer full
05h XOFF received and buffer full
(Table 2135)
Values for Access Server receiver status:
00h uninitialized
01h ready
02h receive buffer full, data may have been lost
Bitfields for external status signals:
Bit(s) Description (Table 2136)
7,6 undefined
5 CTS active
4 DSR active
3 DCD active
2,1 undefined
0 ring indicator
Format of Access Server configuration parameter block:
Offset Size Description (Table 2137)
00h BYTE receive baud rate index
00h 50 bps, 01h 75 bps, 02h 110 bps, 03h 134.5 bps,
04h 150 bps, 05h 300 bps, 06h 600 bps, 07h 1200 bps,
08h 1800 bps, 09h 2000 bps, 0Ah 2400 bps, 0Bh 3600 bps,
0Ch 4800 bps, 0Dh 7200 bps, 0Eh 9600 bps, 0Fh 19200 bps,
10h 38400 bps, 11h 57600 bps, 12h 115200 bps
01h BYTE receive bits per character (0=5 bits..3=8 bits)
02h BYTE receive stop bits
03h BYTE receive parity
00h none, 01h odd, 02h even, 03h mark, 04h space
04h BYTE transmit baud rate index (same as receive baud rate)
05h BYTE transmit bits per character (0=5 bits..3=8 bits)
06h BYTE transmit stop bits
07h BYTE transmit parity (same as receive parity)
08h BYTE DTR state (00h off, 01h on)
09h BYTE RTS state (00h off, 01h on)
0Ah BYTE flow control (00h none, 01h XON/XOFF, 02h RTS/CTS, 03h both)
0Bh BYTE break control (00h off, 01h on)
Format of Access Server statistics:
Offset Size Description (Table 2138)
00h BYTE port number
01h BYTE external status signals (see #2136)
02h BYTE transmitter status (see #2134)
03h BYTE receiver status (see #2135)
04h DWORD number of characters received
08h DWORD number of characters transmitted
0Ch WORD input parity errors
0Eh WORD input framing errors
10h WORD lost characters due to hardware overrun
12h WORD lost characters due to data buffer overrun
Note: the counts are not allowed to wrap around; once a count reaches FFFFh
or FFFFFFFFh, it is no longer incremented
Format of Access Server XON/XOFF characters:
Offset Size Description (Table 2139)
00h BYTE 04h (number of bytes following)
01h BYTE transmit XON character
02h BYTE transmit XOFF character
03h BYTE receive XON character
04h BYTE receive XOFF character
--------N-2F7AFE-----------------------------
INT 2F - Novell NetWare - DOSNP.EXE - INSTALLATION CHECK
AX = 7AFEh
Return: AL = FFh if present
ES = (data???) segment of DOSNP
Program: DOSNP.EXE provides "named pipes" support for DOS workstations running
NetWare
Note: the NetWare shell calls this function and refuses to load if DOSNP is
present
SeeAlso: AX=7A90h
--------N-2F7AFFBX0000-----------------------
INT 2F - Novell NetWare - TBMI v1.1+ - INSTALLATION CHECK / Windows SUPPORT
AX = 7AFFh
BX = 0000h
CX = 4E65h ("Ne")
DX = 7457h ("tW")
ES:DI -> Windows support procedure (see #2140)
Return: AL = FFh if installed
CX = configured sockets (14h)
DS:SI -> data table ???
ES:DI -> IPX far call handler
Notes: for IPX/SPX this call reportedly returns DS:SI pointing to the table
of pointers to service events queue head and tail
this function is also supported by IPXODI; v2.12 does not change DS,
but does set SI to an internal address
SeeAlso: AX=7AFFh/BX=0001h
(Table 2140)
Values Windows support procedure called with:
BP = function
0001h Get ECB
BX = socket number
Return: ES:SI -> ECB or 0000h:0000h if none available
0002h Count Listen ECBs
AX = BX = socket
Return: CX = number of listen ECBs for socket
(must be >= 2 for SPX to work)
0003h ???
0004h Inform task switcher of ECB locations
Note: registers other than those listed above are equal
to the values when IPX was called
Note: the support function will not be called if IPX is called with BX
bit 15 set
--------N-2F7AFFBX0001-----------------------
INT 2F - Novell NetWare - TBMI v1.1+, shell v3.01d - INSTALLATION CHECK???
AX = 7AFFh
BX = 0001h
CX = 4E65h ("Ne")
DX = 7457h ("tW")
Return: AL = FFh if installed
CX = ??? (8000h)
SI = ??? (or -> ???) (0002h and 0007h seen)
ES:DI -> IPX far call handler
ES:DX -> 6-byte data area ???
Note: this function is also supported by IPXODI, but IPXODI v2.12 does not
return ES:DX
SeeAlso: AX=7AFFh/BX=0000h
--------d-2F7F00-----------------------------
INT 2F - Jim Harper's CD-ROM redirector SCSI driver - INSTALLATION CHECK
AX = 7F00h
Return: AL = FFh if installed
SeeAlso: AX=7F01h,AX=7F02h,AX=7F03h
--------d-2F7F01-----------------------------
INT 2F - Jim Harper's CD-ROM redirector SCSI driver - DO COMMAND
AX = 7F01h
DS:DX -> command record (see #2141)
Return: AL = status
00h successful
else error code
SeeAlso: AX=7F00h,AX=7F02h,INT 11/AH=FFh"SDLP",INT 21/AX=4402h"ASPI"
SeeAlso: INT 4F/AX=8100h
Format of CD-ROM redirector command record:
Offset Size Description (Table 2141)
00h BYTE ID
01h 10 BYTEs CDB (Command Descriptor Block) for operation
0Bh WORD segment of buffer
0Dh WORD offset of buffer
0Fh BYTE status
10h BYTE sense
12h WORD count
--------d-2F7F02-----------------------------
INT 2F - Jim Harper's CD-ROM redirector SCSI driver - DO RESET
AX = 7F02h
SeeAlso: AX=7F00h,AX=7F01h
--------d-2F7F03-----------------------------
INT 2F - Jim Harper's CD-ROM redirector SCSI driver - UNINSTALL
AX = 7F03h
Return: AL = status
00h successful
01h unable to uninstall
SeeAlso: AX=7F00h
----------2F7F24-----------------------------
INT 2F - Multiplex - ???
AX = 7F24h
???
Return: ???
Note: called by PC/370, an IBM 370 emulator by Donald S. Higgins
----------2F7F26-----------------------------
INT 2F - Multiplex - ???
AX = 7F26h
???
Return: ???
Note: called by PC/370, an IBM 370 emulator by Donald S. Higgins
--------N-2F8000-----------------------------
INT 2F - EASY-NET - INSTALLATION CHECK
AX = 8000h
Return: AL = 00h not installed
FFh installed
Program: EASY-NET is a shareware two-machine serial-port network
--------N-2F8000-----------------------------
INT 2F - Nanosoft, Inc. TurboNET server - INSTALLATION CHECK
AX = 8000h
Return: AL = FFh if installed
BX = CS of resident code
CX = ??? (03FCh)
Program: TurboNET is a NetBIOS-based file redirector and server; a
demonstration version may be downloaded from Nanosoft's BBS
SeeAlso: AX=8100h
--------t-2F8000-----------------------------
INT 2F - CS_TSR specification - TSR INSTALLATION CHECK
AX = 8000h
DS:SI -> 4-byte CS_TSR signature (11h 43h 53h 10h)
Return: AL = status
00h no CS_TSR-compliant TSRs installed
01h installed, but signature did not match
FFh installed, signature matches
ES:DI -> resident process block (see #2142) of last installed
TSR (if DS:SI pointed at signature on entry)
Program: the CS_TSR specification is a standardized TSR interface by Compact
Soft group in Kiev, Ukraine
Desc: determine whether any CS_TSR-compliant TSRs are installed on the
selected multiplex number
Range: AH=80h to AH=FFh
SeeAlso: AX=8001h"CS_TSR",AX=8002h"CS_TSR",AX=8003h"CS_TSR"
Format of CS_TSR process block:
Offset Size Description (Table 2142)
00h 4 BYTEs CS_TSR signature 11h 43h 53h 10h
04h BYTE INT 2F multiplex number
05h WORD virtual process handle (unique among loaded TSRs)
07h 2 BYTEs version (binary minor version, then major version)
09h WORD PSP segment of TSR
0Bh DWORD pointer to ASCIZ program name
0Fh 3 BYTEs program creation date (day, month, year)
12h 3 BYTEs process start time (seconds, minutes, hours)
15h 3 BYTEs process start date (day, month, year)
--------F-2F8000DX0000-----------------------
INT 2F - FaxBIOS interface - INSTALLATION CHECK
AX = 8000h
DX = 0000h
DI = 0000h
Return: AL = FFh if installed
DX:DI -> signature "FaxBiosjpc"
Range: AH=80h to AH=FFh, selected by scanning multiplex numbers for signature
SeeAlso: AH=2Ah,AX=80FBh
--------N-2F8001-----------------------------
INT 2F - Nanosoft, Inc. TurboNET server - ???
AX = 8001h
DS:SI -> 16-byte buffer for ???
Return: AH = status
00h successful
01h error (TurboNET busy)
Note: makes NetBIOS calls
--------t-2F8001-----------------------------
INT 2F - CS_TSR specification - GET HANDLE (TSR-SPECIFIC INSTALLATION CHECK)
AX = 8001h
DS:SI -> ASCIZ signature string for desired TSR (see #2143)
Return: BX = process handle or 0000h if specified TSR not installed
ES:DI -> process block for TSR (see #2142) if BX<>0000h
Note: A widely-available copy of ASCII billing itself as "ASCII 2.OO by
Nick Zaikin Jr." is in fact a hacked copy of the Compact Soft
ASCII v4.23 which is identical except for the changed attribution
and version (in fact, some instances of "4.23" were missed); the
hacked copy requires the signature string
"ASCII 2.OO by Nick Zaikin Jr." instead of the unhacked version's
simple signature "ASCII"
SeeAlso: AX=8000h"CS_TSR",AX=8002h"CS_TSR"
(Table 2143)
Values for CS_TSR signature strings:
"ASCII" ASCII, a popup ASCII table with character input
"Halculator" HALC, a 32-bit RPN WYSIWIH calculator with undo and ptr support
"AntiTurbo" AT!, an intelligent system slow-down utility
--------t-2F8002-----------------------------
INT 2F - CS_TSR specification - GET PROCESS BLOCK BY PROCESS HANDLE
AX = 8002h
BX = process handle for TSR (see AX=8001h"CS_TSR")
Return: ES:DI -> process block for specified TSR (see #2142)
unchanged if no match for process handle
Note: This function is used to allocate a process handle when the TSR
installs itself, by setting ES:DI to point at something other than
a CS_TSR process block's signature string and iterating through the
possible process handles (0001h to FFFFh) until ES:DI is returned
unchanged
SeeAlso: AX=8000h"CS_TSR",AX=8001h"CS_TSR",AX=8003h"CS_TSR"
--------t-2F8003-----------------------------
INT 2F - CS_TSR specification - CUSTOM SUBFUNCTION
AX = 8003h
BX = process handle for TSR (see AX=8001h"CS_TSR")
other registers vary by TSR
Return: vary by TSR, unchanged if not supported
Program: the CS_TSR specification is a standardized TSR interface by Compact
Soft group in Kiev, Ukraine
SeeAlso: AX=8000h"CS_TSR",AX=8001h"CS_TSR",AX=8002h"CS_TSR"
--------F-2F80FB-----------------------------
INT 2F - FaxBIOS interface - COMMAND SUBMISSION
AX = 80FBh
BX = function number (see #2144)
DX:DI -> command buffer
(see #2146,#2149,#2150,#2151,#2152,#2153,#2158,#2164,#2171)
Return: AL = FFh if submitted OK
CX = result code (see #2145)
Range: AH=80h to AH=FFh, selected by scanning multiplex numbers for signature
SeeAlso: AX=8000h"FaxBIOS",AX=CBDDh
(Table 2144)
Values for FaxBIOS function number:
0001h SYS_LOGIN
0002h SYS_LOGOUT
0003h SYS_GET_FAXAPP_INFO
0004h STAT_IO_GET
0005h STAT_FAXBIOS_GET
0006h PDIR_OPEN
0007h PDIR_CLOSE (see #2154)
0008h PDIR_READ_PERSON (see #2155)
0009h PDIR_PARTIAL_READ
000Ah PDIR_READ_GROUP
000Bh PDIR_READ_MEMBER_LIST
000Ch PDIR_WRITE_PERSON
000Dh PDIR_WRITE_GROUP
000Eh PDIR_DELETE_PERSON
000Fh PDIR_DELETE_GROUP
0010h PDIR_READ_GROUP_LIST
0011h PDIR_IN_GROUP
0012h PDIR_OUT_GROUP
0013h SCHED_OPEN (see #2156)
0014h SCHED_ADD_DEST (see #2157)
0015h SCHED_ADD_FILE (see #2158)
0016h SCHED_SET_PARAMS (see #2159)
0017h SCHED_CANCEL (see #2156)
0018h SCHED_CLOSE (see #2160)
0019h SLOG_OPEN (see #2161)
001Ah SLOG_CLOSE (see #2161)
001Bh SLOG_SHORT_ENV_STAT
001Ch SLOG_LONG_ENV_STAT
001Dh SLOG_DEST_STAT
001Eh SLOG_FILE_STAT
001Fh SLOG_CANCEL_ENV
0020h RLOG_OPEN (see #2161)
0021h RLOG_CLOSE (see #2161)
0022h RLOG_READ
0023h GRAPH_GET_FILE_TYPE (see #2162)
0024h GRAPH_EXPORT_FILE
0025h GRAPH_GET_LAYOUT_INFO
0026h GRAPH_CREATE_FILE (see #2163)
0027h GRAPH_CLOSE_FILE (see #2164)
0028h GRAPH_CREATE_PAGE (see #2165)
0029h GRAPH_WRITE (see #2166)
002Ah GRAPH_END_PAGE
002Bh GRAPH_OPEN_FILE (see #2167)
002Ch GRAPH_GOTO_PAGE (see #2168)
002Dh GRAPH_READ (see #2169)
002Eh IOCTL_GET
002Fh IOCTL_SET
0030h IOCTL_ANSWER_FAX (see #2170)
0031h IOCTL_DIAL (see #2171)
(Table 2145)
Values for FaxBIOS result code:
0000h successful
0001h not prepared or servicing another client (busy)
0002h call failed due to sharing (LOCKED)
0003h logged-in client limit reached (FULL)
0004h transport denied (TRANSPORT_DENIED)
0005h not implemented (NOT_IMPLEMENTED)
0006h aborted while in progress (ABORTED)
0007h permissions denied (PERMISSION_DENIED)
0008h requested data is no longer valid (NO_LONGER_VALID)
0080h unspecified system error occurred
0081h an internal file was not found
0082h an internal file could not be created
0083h an internal file could not be opened
0084h an internal file could not be closed
0085h error occurred writing to an internal file
0086h error occurred reading from an internal file
0087h bad or corrupted file encountered
0088h an access violation occurred
0089h an internal file is empty
008Ah insufficient memory to process request
008Bh FaxBIOS was unable to issue a handle
008Ch an error internal to FaxBIOS occurred
008Dh no room on disk
0100h unspecified error accessing client file
0101h file not found
0102h creation fault
0103h open fault
0104h close fault
0105h write fault
0106h read fault
0107h file corrupted
0108h access violation
0109h empty file
0200h unspecified argument error
0201h bad function
0202h bad option
0203h bad structure size
0204h bad buffer size
0205h bad client ID
0300h unspecified error with token
0301h cover sheet token was invalid
0302h logo token was invalid
0303h signature token was invalid
0304h font token was invalid
0305h phone directory token was invalid
0306h outbound route token was invalid
0307h priority token was invalid
0308h sort token was invalid
0309h billing token was invalid
0400h unspecified handle error
0401h bad Phone Directory handle
0402h bad scheduling handle
0403h bad read send log handle
0404h bad read receive log handle
0405h bad graphics handle
0500h data passed in structure was invalid
0501h name field given is invalid
0502h phone number given is invalid
0503h poll code submitted is invalid
0504h file type constant was invalid
0505h BFT constant not defined or supported
0506h resolution not defined or supported
0507h page length not defined or supported
0508h page width not defined or supported
0509h date & time requested are ridiculous
050Ah Subject text was not an ASCIZ string
050Bh From text was not an ASCIZ string
050Ch requested envelope ID was not found
050Dh requested envelope ID is not valid
050Eh envelope requested was not found
050Fh destination index is out of range
0510h file index is out of range
0511h index into receive log is out of range
0512h file name specified was incomplete or invalid
0513h page selected was out of range
0514h bit width more than byte width
0515h mode for open is not defined
0516h person index is out of range
0517h person ID is out of range
0518h group index out of range or invalid
0519h group ID out of range or invalid
051Ah range of indices to read is invalid
051Bh group name given is invalid
051Ch field_to_use is badly specified
051Dh predicate invalid for field specified
0600h unspecified client procedure error
0601h device of interest is not present
0602h device of interest has been removed
0603h device of interest is not responding
0604h device of interest is disabled
0605h could not dial because device was in use
0606h maximum destination limit exceeded
0607h maximum file limit exceeded
0608h scheduling closed with no destination
0609h scheduling closed with no files or poll
060Ah scheduling closed with no parameters specified
060Bh file type specified does not match file
060Ch file type specified is not supported
060Dh file submitted is not exportable
060Eh file type specified is not imageable
060Fh error converting file
0610h envelope could not be cancelled
0611h Phone Directory is full
0612h record is already in the Phone Directory
0613h selected group in Phone Directory is full
0614h person is already in the group
0615h person is not in the group & cannot be removed
0616h a graphics file to be created already exists
0617h a graphics file to be read is empty
0618h GRAPH_CREATE_PAGE called before GRAPH_END_PAGE
0619h graph read or write attempted without goto or create
061Ah graph page contains no data
061Bh Phone Directory is already open for this client
061Ch schedule log is already open for this client
061Dh receive log is aready open for this client
061Eh Phone Directory function requires write mode
0800h denied exclusive use of the API
Format of FaxBIOS SYS_LOGIN command buffer:
Offset Size Description (Table 2146)
00h WORD structure size
02h WORD function number
04h WORD return code
06h WORD client ID
08h WORD API Major Version
0Ah WORD API Minor Version
0Ch DWORD reserved for manufacturer's use
10h 22 BYTEs manufacturer's ID
26h WORD highest possible device number
28h WORD maximum destinations per envelope
2Ah WORD maximum files per envelope
2Ch WORD FaxBIOS capabilities (see #2147)
2Eh DWORD T.30 capabilities (see #2148)
32h WORD IPC handle
34h DWORD amount of memory needed to load
38h WORD scope (00h for public, nonzero for private)
3Ah 6 BYTEs future expansion
40h WORD structure size
Bitfields for FaxBIOS capabilities:
Bit(s) Description (Table 2147)
0 transmit supported
1 receive supported
2 IOCTL supported
3 IOCTL_DIAL supported
4 IOCTL_ANSWER_FAX supported
5 manual transmit supported
6 optional phone services supported
7 canonical phone objects
8 seam with next supported
Bitfields for T.30 capabilities:
Bit(s) Description (Table 2148)
0 low vertical resolution (minimum)
1 high vertical resolution
2 page width 107mm (4.21 in)
3 page width 151mm (5.91 in)
4 page width 215mm (8.46 in) (minimum)
5 page width 255mm (10.04 in)
6 page width 303mm (11.93 in)
7 unused
8 page length 297mm (11.69 in) (minimum)
9 page length 364mm (14.33 in)
10 page length 279mm (11 in)
11 page length unlimited
12 Group 4 resolution 300x300
13 Group 4 resolution 400x400
14 able to respond to poll from remote
15 able to poll remote
16 binary file transfer supported
Format of FaxBIOS SYS_LOGOUT command buffer:
Offset Size Description (Table 2149)
00h WORD structure size
02h WORD function number
04h WORD return code
06h WORD client ID
08h DWORD client tag (for client's internal use)
0Ch 6 BYTEs future expansion
12h WORD structure size
Format of FaxBIOS SYS_GET_FAXAPP_INFO command buffer:
Offset Size Description (Table 2150)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch 80 BYTEs FaxBIOS data
5Ch 80 BYTEs default cover
ACh 80 BYTEs default logo
FCh 80 BYTEs default signature
14Ch 80 BYTEs default font 10
19Ch 80 BYTEs default font 165
1ECh 80 BYTEs default user font
23Ch 80 BYTEs default Pdir
28Ch 80 BYTEs default sort
2DCh 10 BYTEs default bill
2E6h 10 BYTEs default route
2F0h 40 BYTEs default cover sheet form
318h 34 BYTEs valid dial characters
33Ah 6 BYTEs local country code
340h 6 BYTEs local city or area code
346h 6 BYTEs future expansion
34Ch WORD structure size
Format of FaxBIOS STAT_IO_GET command buffer:
Offset Size Description (Table 2151)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD device number
0Eh WORD current activity
10h WORD number of rings (if ringing)
12h WORD number of fascimiles transmitted
14h WORD number of fascimiles received
16h WORD status of last transmission
18h WORD envelope number of last transmission
1Ah WORD index of last destination in envelope
1Ch WORD status of last reception
1Eh WORD current page (if session in progress)
20h 80 BYTEs current file
70h 104 BYTEs remote number
D8h 20 BYTEs last name
ECh 20 BYTEs first name
100h 32 BYTEs company name
120h 32 BYTEs notes
140h WORD current envelope ID (if sending)
142h WORD total pages in transmission (if sending)
144h 6 BYTEs future expansion
14h WORD structure size
Format of FaxBIOS STAT_FAXBIOS_GET command buffer:
Offset Size Description (Table 2152)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD status ID
0Eh WORD currenty FaxBIOS function number
10h WORD current Client ID being serviced
12h WORD number of things to do
14h WORD number of them done
16h WORD number of pages to do (if any)
18h WORD number of them done
1Ah WORD number of files to do
1Ch WORD number of them done
1Eh 80 BYTEs current File
6Eh WORD 0 if all devices are idle
70h WORD number of fascimiles transmitted
72h WORD number of fascimiles received
74h WORD status of last transmission in system
76h WORD envelope ID of last transmission
78h WORD index of last destination in envelope
7Ah WORD status of last reception in system
7Ch DWORD time of next transmission
80h 6 BYTEs future expansion
86h WORD structure size
Format of FaxBIOS PDIR_OPEN command buffer:
Offset Size Description (Table 2153)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch 80 BYTEs Phone Directory token
5Ch 80 BYTEs sort order token
ACh WORD open Mode (0 = read, 1 = write)
AEh WORD Phone Directory handle
B0h WORD number of people
B2h WORD number of groups
B4h WORD bitmap of fields supported by partial read
B6h 6 BYTEs future expansion
BCh WORD structure size
Format of FaxBIOS PDIR_CLOSE command buffer:
Offset Size Description (Table 2154)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD Phone Directory handle
0Eh 6 BYTEs future expansion
14h WORD structure size
Format of FaxBIOS PDIR_READ_PERSON command buffer:
Offset Size Description (Table 2155)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD Phone Directory handle
0Eh WORD retrieve by index
10h WORD person ID or index
12h WORD how many groups person is in
14h WORD person ID
16h 20 BYTEs last name
2Ah 20 BYTEs first name
3Eh 32 BYTEs company
5Eh 32 BYTEs notes
7Eh 6 BYTEs FAX country code
84h 6 BYTEs FAX city/area code
8Ah 14 BYTEs FAX local number
98h 14 BYTEs FAX extension
A6h 24 BYTEs reserved
BEh 6 BYTEs voice country code
C4h 6 BYTEs voice city/area code
CAh 14 BYTEs voice local number
D8h 14 BYTEs voice extension
E6h 24 BYTEs reserved
FEh 10 BYTEs outbound routing information
108h 10 BYTEs billing information, credit card etc
112h DWORD remote FAX capabilities
116h 21 BYTEs T.30 poll code of FAX number
12Bh 15 BYTEs reserved
13Ah 6 BYTEs future expansion
140h WORD structure size
Format of FaxBIOS SCHED_OPEN, SCHED_CANCEL command buffer:
Offset Size Description (Table 2156)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD scheduler handle
0Eh 6 BYTEs future expansion
14h WORD structure size
Format of FaxBIOS SCHED_ADD_DEST command buffer:
Offset Size Description (Table 2157)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD schedule handle
0Eh WORD device number if manual send wanted
10h WORD non-zero if poll desired
12h WORD person ID
14h 20 BYTEs last name
28h 20 BYTEs first name
3Ch 32 BYTEs company
5Ch 32 BYTEs notes
7Ch 6 BYTEs FAX country code
82h 6 BYTEs FAX city/area code
88h 14 BYTEs FAX local number
96h 14 BYTEs FAX extension
A4h 24 BYTEs reserved
BCh 6 BYTEs voice country code
C2h 6 BYTEs voice city/area code
C8h 14 BYTEs voice local number
D6h 14 BYTEs voice extension
E4h 24 BYTEs reserved
FCh 10 BYTEs outbound routing information
106h 10 BYTEs billing information, credit card etc
110h DWORD remote FAX capabilities
114h 21 BYTEs T.30 poll code of FAX number
129h 15 BYTEs reserved
138h 6 BYTEs future expansion
13Eh WORD structure size
SeeAlso: #2158
Format of FaxBIOS SCHED_ADD_FILE command buffer:
Offset Size Description (Table 2158)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD schedule handle
0Eh WORD file type
0000h unidentified
0001h native file format
0002h ASCII
0003h FaxBIOS Tiff Class F
10h 80 BYTEs file name
60h 80 BYTEs font token
B0h WORD conversion options bitmap
B2h WORD resolution
0000h standard 98 lines per inch, 204 dpi
0001h fine 196 lines per inch, 204 dpi
0002h Group4 300 dpi
0003h Group4 400 dpi
B4h WORD page length
0000h 279 mm (11 in)
0001h 297 mm (11.69 in)
0002h 364 mm (14.33 in)
0003h unlimited
B6h WORD page width
0000h 215 mm (8.46 in)
0001h 255 mm (10.04 in)
0002h 303 mm (11.93 in)
0003h 151 mm (5.91 in)
0004h 107 mm (4.21 in)
B8h WORD binary file transfer specification
0000h only as FAX
0001h only as file (for non-faxable files)
0002h as file when possible else FAX
BAh WORD seam flag (nonzero for seam with next)
BCh WORD delete flag (nonzero to delete when done)
BEh 6 BYTEs future expansion
C4h WORD structure size
SeeAlso: #2157,#2159
Format of FaxBIOS SCHED_SET_PARAMS command buffer:
Offset Size Description (Table 2159)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD scheduler handle
0Eh DWORD time to send
10h 10 BYTEs priority token
1Ch 80 BYTEs logo file token
6Ch 80 BYTEs signature file token
BCh 80 BYTEs cover page token
10Ch 40 BYTEs Subject text
134h 40 BYTEs From text
15Ch WORD user ID
15Eh 6 BYTEs future expansion
164h WORD structure size
SeeAlso: #2157,#2158,#2160
Format of FaxBIOS SCHED_CLOSE command buffer:
Offset Size Description (Table 2160)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD scheduler handle
0Eh WORD envelope ID generated
10h 6 BYTEs future expansion
16h WORD structure size
SeeAlso: #2159
Format of FaxBIOS SLOG_OPEN, SLOG_CLOSE, RLOG_OPEN, RLOG_CLOSE command buffer:
Offset Size Description (Table 2161)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD log handle
0Eh WORD number of entries
10h 6 BYTEs future expansion
16h WORD structure size
Format of FaxBIOS GRAPH_GET_FILE_TYPE command buffer:
Offset Size Description (Table 2162)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch 80 BYTEs filename
5Ch WORD file type
0000h unidentified
0001h native file format
0002h ASCII
0003h FaxBIOS Tiff Class F
5Eh WORD bitmap of supported capabilities
60h 6 BYTEs future expansion
66h WORD structure size
SeeAlso: #2163,#2164
Format of FaxBIOS GRAPH_CREATE_FILE command buffer:
Offset Size Description (Table 2163)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch 80 BYTEs filename
5Ch WORD graph handle
5Eh 6 BYTEs future expansion
64h WORD structure size
SeeAlso: #2162,#2164,#2165
Format of FaxBIOS GRAPH_CLOSE_FILE, GRAPH_END_PAGE command buffer:
Offset Size Description (Table 2164)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD graph handle
0Eh 6 BYTEs future expansion
14h WORD structure size
SeeAlso: #2163,#2165
Format of FaxBIOS GRAPH_CREATE_PAGE command buffer:
Offset Size Description (Table 2165)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD graph handle
0Eh WORD resolution
10h WORD page width
12h 6 BYTEs future expansion
18h WORD structure size
SeeAlso: #2163,#2164,#2166
Format of FaxBIOS GRAPH_WRITE_PAGE command buffer:
Offset Size Description (Table 2166)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD graph handle
0Eh DWORD pointer to storage for image
12h WORD band height in lines
14h WORD width of page image in bytes
16h WORD facsimile page width constant
18h WORD width of page image in bits
1Ah WORD number of bytes actually processed
1Ch 6 BYTEs future expansion
22h WORD structure size
SeeAlso: #2165,#2167
Format of FaxBIOS GRAPH_OPEN_FILE command buffer:
Offset Size Description (Table 2167)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch 80 BYTEs filename
5Ch WORD file type
5Eh WORD graph handle
60h WORD number of pages
62h 6 BYTEs future expansion
68h WORD structure size
SeeAlso: #2166,#2168
Format of FaxBIOS GRAPH_GOTO_PAGE command buffer:
Offset Size Description (Table 2168)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD graph handle
0Eh WORD page number
10h WORD vertical resolution
12h WORD page width
14h DWORD page length
18h 6 BYTEs future expansion
1Eh WORD structure size
SeeAlso: #2166,#2167,#2169
Format of FaxBIOS GRAPH_READ_PAGE command buffer:
Offset Size Description (Table 2169)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD graph handle
0Eh DWORD pointer to storage for image
12h WORD band height in lines
14h WORD width of page image in bytes
16h WORD facsimile page width constant
18h WORD width of page image in bits
1Ah WORD number of bytes actually processed
1Ch 6 BYTEs future expansion
22h WORD structure size
Format of FaxBIOS IOCTL_ANSWER_FAX command buffer:
Offset Size Description (Table 2170)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD device number
0Eh 6 BYTEs future expansion
14h WORD structure size
SeeAlso: #2171
Format of FaxBIOS IOCTL_DIAL command buffer:
Offset Size Description (Table 2171)
00h 12 BYTEs common data (see SYS_LOGOUT above)
0Ch WORD device number
0Eh 6 BYTEs country code
14h 6 BYTEs city or area code
1Ah 14 BYTEs local number
28h 14 BYTEs extension
36h 14 BYTEs reserved
4Eh 6 BYTEs future expansion
54h WORD structure size
SeeAlso: #2170
--------N-2F8100-----------------------------
INT 2F U - Nanosoft, Inc. TurboNET redirector - INSTALLATION CHECK
AX = 8100h
Return: AL = FFh if installed
Program: TurboNET is a NetBIOS-based file redirector and server; a
demonstration version may be downloaded from Nanosoft's BBS
SeeAlso: AX=8000h"TurboNET"
--------N-2F8101-----------------------------
INT 2F U - Nanosoft, Inc. TurboNET redirector - ???
AX = 8101h
Return: AL = ???
DL = ???
--------N-2F8102-----------------------------
INT 2F U - Nanosoft, Inc. TurboNET redirector - ???
AX = 8102h
Return: AL = ???
DL = ???
--------N-2F8103-----------------------------
INT 2F U - Nanosoft, Inc. TurboNET redirector - GET MACHINE NAME???
AX = 8103h
ES:DI -> 17-byte buffer
Return: buffer filled
--------N-2F8104-----------------------------
INT 2F U - Nanosoft, Inc. TurboNET redirector - ???
AX = 8104h
BL = ???
BH = ???
CX = ???
DX = ???
DS:SI -> 16-byte buffer containing ???
Return: AL = 00h ???
--------N-2F8105-----------------------------
INT 2F U - Nanosoft, Inc. TurboNET redirector - ???
AX = 8105h
CX = ??? (don't change current value if 0000h)
DX = ??? (don't change current value if 0000h)
Return: AL = 00h successful
--------s-2F8200-----------------------------
INT 2F - RESPLAY - SAMPLE/PLAYBACK
AX = 8200h
DX:DI -> start of sample space
CX:BX = length in bytes
Return: AX = status (see #2172)
Program: RESPLAY is a freeware sound sampling/playback utility by Mark J. Cox
SeeAlso: AX=8201h"RESPLAY",AX=8210h
(Table 2172)
Values for RESPLAY status:
1000h successful
2000h not initialized (see AX=8210h)
other RESPLAY not installed
--------G-2F8200-----------------------------
INT 2F U - Nanosoft, Inc. CAPDOS - INSTALLATION CHECK
AX = 8200h
Return: AL = FFh if installed
Program: CAPDOS is a TSR by Nanosoft, Inc. which allows INT 21h calls to be
captured and recorded for later analysis
SeeAlso: AX=8100h,AX=8201h"CAPDOS",AX=8202h"CAPDOS",AX=8203h"CAPDOS"
SeeAlso: AX=8204h"CAPDOS"
--------s-2F8201-----------------------------
INT 2F - RESPLAY - INSTALLATION CHECK
AX = 8201h
Return: AX = 7746h if installed
SeeAlso: AX=8202h"RESPLAY",AX=8210h
--------G-2F8201-----------------------------
INT 2F - Nanosoft, Inc. CAPDOS - CLEAR QUEUE
AX = 8201h
Note: resets queue of captured INT 21 calls
SeeAlso: AX=8200h"CAPDOS"
--------s-2F8202-----------------------------
INT 2F - RESPLAY - UNINSTALL
AX = 8202h
Return: AX = status
1000h successful
SeeAlso: AX=8201h"RESPLAY",AX=8210h"RESPLAY"
--------G-2F8202-----------------------------
INT 2F - Nanosoft, Inc. CAPDOS - START COLLECTION
AX = 8202h
SeeAlso: AX=8200h"CAPDOS",AX=8203h"CAPDOS"
--------G-2F8203-----------------------------
INT 2F - Nanosoft, Inc. CAPDOS - STOP COLLECTION
AX = 8203h
SeeAlso: AX=8200h"CAPDOS",AX=8202h"CAPDOS",AX=8204h"CAPDOS"
--------G-2F8204-----------------------------
INT 2F - Nanosoft, Inc. CAPDOS - GET QUEUE PARAMETERS
AX = 8204h
Return: AH = flag: queue wrapped if nonzero
BX = index of current start of queue
CX = size of queue in entries
SeeAlso: AX=8200h"CAPDOS",AX=8202h"CAPDOS",AX=8205h"CAPDOS"
--------G-2F8205-----------------------------
INT 2F - Nanosoft, Inc. CAPDOS - GET QUEUE ITEM
AX = 8205h
BX = queue item number
Return: AX,BX,CX,DX,SI,DI,DS,ES as on entry to captured DOS call
SeeAlso: AX=8200h"CAPDOS",AX=8204h"CAPDOS"
--------s-2F8210-----------------------------
INT 2F - RESPLAY - INITIALIZE
AX = 8210h
BL = sound device number (see #2173)
BH = sample rate in multiples of 250 Hz (14h to A0h)
CL = direction
00h playback
01h sample
Return: AX = status (see #2172)
SeeAlso: AX=8200h"RESPLAY"
(Table 2173)
Values for RESPLAY sound device:
00h printer port LPT1
01h printer port LPT2
02h prototype board at I/O address 0300h
03h printer port (alternative LPT1)
04h internal speaker
----------2F86-------------------------------
INT 2F U - ???
AH = 86h
AL = function (at least 06h and 07h)
???
Return: ???
Note: called by Codeview for Windows
SeeAlso: AH=44h
--------U-2F8900-----------------------------
INT 2F - WHOA!.COM - INSTALLATION CHECK
AX = 8900h
Return: AL = state
00h not installed
FFh installed
Program: WHOA!.COM is a system slow-down utility by Brad D Crandall
SeeAlso: AX=8901h,AX=8902h
--------U-2F8901-----------------------------
INT 2F - WHOA!.COM - UNINSTALL
AX = 8901h
Return: AL = status
FDh successful
FEh error
SeeAlso: AX=8900h
--------U-2F8902-----------------------------
INT 2F - WHOA!.COM - SET DELAY COUNT
AX = 8902h
BX = delay count (larger values slow system down more)
Return: AL = status
FDh successful
FEh error
Program: WHOA!.COM is a system slow-down utility by Brad D Crandall
SeeAlso: AX=8900h
--------U-2F9000-----------------------------
INT 2F U - RAID - INSTALLATION CHECK
AX = 9000h
Return: AL = FFh if installed
Program: RAID (Resident AID) is a TSR utility program by Ross Neilson Wentworth
that resides mostly in EMS
--------U-2F9001-----------------------------
INT 2F U - RAID - GET ???
AX = 9001h
Return: DX:AX -> ???
SeeAlso: AX=9000h
--------U-2F9002-----------------------------
INT 2F U - RAID - GET RESIDENT SEGMENT
AX = 9002h
Return: AX = segment of resident (conventional memory) portion
SeeAlso: AX=9000h
--------U-2F9003-----------------------------
INT 2F U - RAID - UNINSTALL
AX = 9003h
Return: ???
SeeAlso: AX=9000h
--------U-2F9004-----------------------------
INT 2F U - RAID - GET ???
AX = 9004h
Return: AX = first available paragraph past end of resident portion???
CX destroyed
SeeAlso: AX=9000h
--------e-2F92-------------------------------
INT 2F - Network Courier E-Mail - API
AH = 92h
AL = function
00h installation check
01h uninstall
02h pop down MICRO.EXE notification window
03h ???
04h ???
05h ???
Return: ???
Program: The Network Courier is an electronic mail package by Consumers
Software of Vancouver, BC which was bought by Microsoft in 1991 and
renamed Microsoft Mail v3.0.
SeeAlso: AX=9400h,AX=9401h,AX=9402h,AH=9Ch
Index: installation check;Network Courier E-Mail
Index: uninstall;Network Courier E-Mail
--------R-2F9200-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - BUG
AX = 9200h
Program: DRIVEMAP is a redirector which allows drives on computers connected
over the parallel or serial ports to appear as local drives
BUG: jumps to data because jump table entry is 0000h
Note: DRIVEMAP returns AX=FFFFh if not a valid function number in AL
--------R-2F9201-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - CHECK IF MAPPED DRIVE
AX = 9201h
DL = drive number (01h = A:, etc.)
Return: AL = 92h if mapped drive
AH may be destroyed (v8.0 DRIVEMAP returns AX=0000h if not mapped)
SeeAlso: AX=9204h,AX=920Bh
--------R-2F9202-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - UNINSTALL
AX = 9202h
BX = caller's CS
Return: AX = status
0000h failed
nonzero successful
SeeAlso: AX=9204h
--------R-2F9203-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET VERSION
AX = 9203h
Return: AH = major version
AL = minor version
CX = segment of resident code
Note: the DRIVEMAP included with PC Tools v8.0 is version 1.00
SeeAlso: AX=9204h,INT 16/AX=FF70h
--------R-2F9204-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - INSTALLATION CHECK
AX = 9204h
Return: AX = 9200h if installed
BL = ???
CX = segment of resident code
Program: DRIVEMAP is a redirector which allows drives on computers connected
over the parallel or serial ports to appear as local drives
SeeAlso: AX=9201h,AX=9202h,AX=9203h
--------R-2F9205-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - SET ???
AX = 9205h
BX = ??? to set
Return: CX = new value of ???
--------R-2F9206-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9206h
???
Return: ???
--------R-2F9207-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET ???
AX = 9207h
???
Return: AX = ???
--------R-2F9208-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9208h
???
Return: ???
--------R-2F9209-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9209h
???
Return: AX = ???
BX = ???
CX = ???
DX = ???
--------R-2F920A-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 920Ah
BX = ???
Return: AX = ??? or FFFBh on error
--------R-2F920B-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - SET DRIVE MAPPING
AX = 920Bh
BL = drive letter (41h ['A'] = A:, etc)
CX = ??? (0000h removes mapping)
Return: AX = ??? or FFF8h on error
SeeAlso: AX=9201h,AX=920Dh
--------R-2F920C-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 920Ch
???
Return: AX = ??? (0002h)
CX = ??? (0000h)
--------R-2F920D-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET DRIVE TYPE
AX = 920Dh
BL = drive letter (41h ['A'] = A:, etc)
Return: AX = type flags
bit 0: ???
bit 1: available
bit 5: local
BX = ???
CX = segment of resident code (apparently an unintended side effect)
Program: DRIVEMAP is a redirector which allows drives on computers connected
over the parallel or serial ports to appear as local drives
SeeAlso: AX=9218h,INT 16/AX=FF70h
--------R-2F920E-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - SET LPT MAPPING
AX = 920Eh
BX = port number (0-2)
CX = ??? (0000h to unmap)
Return: ???
--------R-2F920F-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET ???
AX = 920Fh
ES:DI -> 3-byte buffer for ???
Return: CX = 0000h
ES:DI buffer filled
--------R-2F9210-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9210h
???
Return: ???
--------R-2F9211-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET ???
AX = 9211h
ES:DI -> 8-word buffer for ???
Return: CX = 0000h
ES:DI buffer filled
--------R-2F9212-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - CRITICAL SECTION???
AX = 9212h
BX = phase
0000h leave critical section???
nonzero enter critical section???
--------R-2F9213-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9213h
BX = function number (0000h-000Bh)
???
Return: ???
--------R-2F9214-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET ???
AX = 9214h
ES:DI -> 6-word buffer for ???
Return: CX = 0000h
AX = ???
ES:DI buffer filled
--------R-2F9215-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET ???
AX = 9215h
ES:DI -> 100-word buffer for ???
Return: CX = 0000h
ES:DI buffer filled
--------R-2F9216-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9216h
ES:DI -> ???
Return: ???
--------R-2F9217-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9217h
DS:SI -> 25-word buffer containing ???
Return: ???
--------R-2F9218-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET LPT TYPE???
AX = 9218h
BX = port number???
Return: AX = ???
BX = ??? (0000h)
CX = ??? (0000h)
Program: DRIVEMAP is a redirector which allows drives on computers connected
over the parallel or serial ports to appear as local drives
--------R-2F9219-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 9219h
???
Return: ???
--------R-2F921A-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 921Ah
???
Return: AH = ???
AL = ???
BX = ???
--------R-2F921B-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 921Bh
???
Return: AX = ???
CX = segment of resident code (apparently an unintended side effect)
--------R-2F921C-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 921Ch
???
Return: ???
--------R-2F921D-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - GET ???
AX = 921Dh
Return: AX = ???
--------R-2F921E-----------------------------
INT 2F U - PC Tools v8.0 DRIVEMAP - ???
AX = 921Eh
???
Return: ???
Program: DRIVEMAP is a redirector which allows drives on computers connected
over the parallel or serial ports to appear as local drives
Note: this function sets two variables to 24h each
SeeAlso: INT 16/AX=FF70h
--------V-2F93-------------------------------
INT 2F - InnerMission v1.7+ - INSTALLATION CHECK
AH = 93h
BX = CX = AX
Return: AL = state
FFh if installed and BX=CX=AX on entry
BX = segment of resident code
01h if installed but BX or CX differ from AX (multiplex number not
available)
Program: InnerMission is a shareware graphical screen blanker by Kevin Stokes
SeeAlso: INT 14/AX=AA01h,INT 2F/AX=6400h
Index: screen saver;InnerMission
--------e-2F9400-----------------------------
INT 2F - MICRO.EXE - INSTALLATION CHECK
AX = 9400h
Return: AL = 07h or 08h if installed
Program: MICRO.EXE is a TSR of the Microsoft Mail part of Workgroup Connection
SeeAlso: AH=92h"Network Courier",AX=9401h,AX=9402h,AX=9403h,AX=9404h
SeeAlso: INT 21/AH=3Fh"WORKGRP.SYS"
--------e-2F9401-----------------------------
INT 2F - MICRO.EXE - SET ??? FLAG
AX = 9401h
SeeAlso: AX=9400h,AX=9403h
--------e-2F9402-----------------------------
INT 2F - MICRO.EXE - ???
AX = 9402h
???
Return: ???
SeeAlso: AX=9400h
--------e-2F9403-----------------------------
INT 2F - MICRO.EXE - SET ??? FLAG
AX = 9403h
SeeAlso: AX=9400h,AX=9404h
--------e-2F9404-----------------------------
INT 2F - MICRO.EXE - CLEAR ??? FLAG
AX = 9404h
ES:DI -> name of executable from which MICRO.EXE was started
Note: if the specified name is identical to the name of the program file
from which MICRO was started, the ??? flag is cleared; otherwise,
it is left unchanged
SeeAlso: AX=9400h,AX=9403h
--------V-2F96C7-----------------------------
INT 2F U - STRETCH - INSTALLATION CHECK
AX = 96C7h
Return: AX = AAAAh if installed
Program: stretch.exe is a TSR for Toshiba Laptops with WD90C24 video chip
to avoid blank screen areas in VGA text modes by increasing
inter-line spacing
--------V-2F9800-----------------------------
INT 2F U - S3RMDRV.SYS - INSTALLATION CHECK / VERSION CHECK
AX = 9800h
BX = function
0000h installation check
Return: AX = 524Dh ('RM') if installed
0001h get driver version
Return: AX = driver version (AH=major, AL=BCD minor)
Program: S3RMDRV.SYS provides support for the S3 MPEG driver FMPDRV
SeeAlso: AX=9803h
--------V-2F9803-----------------------------
INT 2F U - S3RMDRV.SYS - COPY ??? INTO USER BUFFER
AX = 9803h
DX:BX -> 116-byte buffer for ASCIZ ???
Return: AX = 0000h
Note: the examined version of the driver returns CF set for any AL other
than 00h or 03h
SeeAlso: AX=9800h
--------l-2F9900-----------------------------
INT 2F U - DOS Navigator II - INSTALLATION CHECK
AX = 9900h
Return: BX = 4E44h ('ND') if installed
AX = number of DOS Navigator executions
CL = child process exit code
DX = version number (2141h for version II 1.41)
Notes: old versions of DOS Navigator II always returned AH=1, while newer
ones return AH=0 and store AL in the DN.FLG file
Program: DOS Navigator is a multi-window shell for MS-DOS by RIT S.R.L.
DOS Navigator(TM) is a registered trademark of RIT S.R.L.
SeeAlso: AX=9901h,AX=9902h,AX=9903h
--------l-2F9901-----------------------------
INT 2F U - DOS Navigator II - RETURN POINTER TO COMMAND LINE
AX = 9901h
Return: ES:BX -> command line (terminated with 0Dh)
AX = ES
SeeAlso: AX=9900h,AX=9902h,AX=9903h
--------l-2F9902-----------------------------
INT 2F U - DOS Navigator II - SET 'TRUE' EXIT CODE OF DN.PRG
AX = 9902h
CL = exit code
Return: AX destroyed
SeeAlso: AX=9900h,AX=9901h,AX=9903h
--------l-2F9903-----------------------------
INT 2F U - DOS Navigator II - SPECIFY HOW TO EXECUTE COMMANDS
AX = 9903h
CL = 1 to use INT 2E
CL <> 1 to use INT 21/AH=4Bh
SeeAlso: AX=9900h,AX=9901h,AX=9902h
--------e-2F9C-------------------------------
INT 2F - Network Courier E-Mail OPERATOR.EXE - API
AH = 9Ch
AL = subfunction
01h uninstall
Return: ???
Program: The Network Courier is an electronic mail package by Consumers
Software of Vancouver, BC which was bought by Microsoft in 1991 and
renamed Microsoft Mail v3.0.
SeeAlso: AH=92h
Index: uninstall;Network Courier E-Mail OPERATOR.EXE
--------G-2F9E00-----------------------------
INT 2F U - INTMON v2.1 - INSTALLATION CHECK
AX = 9E00h
Return: AX = FFFFh if installed
BX = segment of resident code
Program: INTMON is a shareware interactive interrupt monitoring TSR for 386
and higher machines by Celso Minnitti, Jr.
SeeAlso: AX=9E01h,AX=9E02h,AX=9E03h,AX=9F00h
--------G-2F9E01-----------------------------
INT 2F U - INTMON v2.1 - RESET
AX = 9E01h
Return: ???
Desc: this function specifies that INTMON should assume that any interrupts
on which it is currently awaiting a return have completed (i.e.
interrupts which never return such as INT 20 and INT 27)
SeeAlso: AX=9E00h,AX=9E03h
--------G-2F9E02-----------------------------
INT 2F U - INTMON v2.1 - DISPLAY CPU REGISTERS???
AX = 9E02h
Return: ???
SeeAlso: AX=9E00h
--------G-2F9E03-----------------------------
INT 2F U - INTMON v2.1 - HOOK INTERRUPT???
AX = 9E03h
BH = interrupt number???
Return: ???
Note: if AL > 03h on entry, INTMON 2.1 returns immediately
SeeAlso: AX=9E00h,AX=9E01h
--------G-2F9F00-----------------------------
INT 2F U - INTCFG v2.1 - INSTALLATION CHECK
AX = 9F00h
Return: AX = FFFFh if installed
Program: INTCFG is an optionally-resident control program for INTMON by Celso
Minnitti, Jr.
SeeAlso: AX=9E00h,AX=9F01h,AX=9F30h,AX=9F49h
--------G-2F9F01-----------------------------
INT 2F U - INTCFG v2.1 - ???
AX = 9F01h
???
Return: ???
SeeAlso: AX=9F00h
--------G-2F9F30-----------------------------
INT 2F U - INTCFG v2.1 - GET ???
AX = 9F30h
Return: AX = ??? (0002h)
SeeAlso: AX=9F00h
--------G-2F9F49-----------------------------
INT 2F U - INTCFG v2.1 - UNINSTALL
AX = 9F49h
Return: AX,DX,DS,ES destroyed
SeeAlso: AX=9F00h
--------E-2FA1--BX0081-----------------------
INT 2F - Ergo DOS extenders - INSTALLATION CHECK
AH = A1h
BX = 0081h
AL = which
FEh OS/286,OS/386
FFh HummingBoard DOS extender
ES:DI -> 16-byte buffer
Return: if installed, first four bytes of ES:DI buffer are "IABH"
Note: since TKERNEL is a licensed version, it is likely that subfunctions
BX=0082h and BX=0084h are present and function identically to the
AX=FBA1h/BX=008xh calls
SeeAlso: AX=ED00h,AX=FBA1h/BX=0081h,INT 15/AX=BF02h
--------m-2FA189-----------------------------
INT 2F U - Biologic HRAMDEV.SYS - API
AX = A189h
BX = subfunction
0000h set ???
0001h remove ???
0002h get status ???
0003h enable ???
0004h disable ???
0005h set ??? flag
0006h clear ??? flag
0007h set ??? flag
0008h clear ??? flag
0009h set ???
ES:DI -> function-specific arguments
if func 0000h: 20-byte buffer containing ???
if func 0001h: 20-byte buffer for returned ???
if func 0002h: 16-byte buffer for returned ???
if func 0009h: WORD containing ???
Return: BX = A189h if installed
AH = status
00h successful
FFh failed or invalid function number
Program: HRAMDEV.SYS is a part of the shareware package HRAM by Biologic which
provides improved high memory access under MS-DOS 5.0
Note: functions 00h and 01h use a stack of four entries; function 01h always
removes the values stored with the most recent function 00h call
which has not yet been matched with a function 01h call.
--------U-2FA4E0-----------------------------
INT 2F - Futurus Team - INSTALLATION CHECK
AX = A4E0h
Return: AL = 52h ("R") if installed
AH = major version plus 30h ("0")
ES:BX -> ??? (INT A4 handler???)
Note: older versions of Right Hand Man (from which Team evolved) store the
signature "RH" at offset 103h in the INT 2F handler's segment
SeeAlso: INT A4"Right Hand Man"
--------U-2FA900-----------------------------
INT 2F - METZTSR.COM - INSTALLATION CHECK
AX = A900h
CF set
Return: CF clear if resident
AX = 97FFh
CF set if not present
Notes: METZTSR.COM prevents METZ applications (such as the MAGIC screen
saver) inactivity timeout while running a DOSapp under MS Windows.
the default multiplex number is A9h, but may be set to any value from
80h to FFh with a commandline switch
SeeAlso: AX=A901h,AX=A902h
--------U-2FA901-----------------------------
INT 2F - METZTSR.COM - GET TIME OF LAST KEYBOARD ACTIVITY
AX = A901h
CF set
Return: CF clear if successful
AX:DX = BIOS time at which INT 09 was last invoked
CF set if not present
SeeAlso: INT 09,INT 1A/AH=00h
--------U-2FA902-----------------------------
INT 2F - METZTSR.COM - SET METZ Ctrl-Alt-Del FLAG
AX = A902h
BL = new value
00h Ctrl-Alt-Del not allowed
else Ctrl-Alt-Del allowed (startup default is 01h)
CF set
Return: CF clear if successful
AX = 97FFh
CF set if not resident
SeeAlso: AX=A903h
--------U-2FA903-----------------------------
INT 2F - METZTSR.COM - GET METZ Ctrl-Alt-Del FLAG
AX = A903h
CF set
Return: CF clear if successful
AX = 97FFh if Ctrl-Alt-Del allowed
AX = 0000h if Ctrl-Alt-Del not allowed
CF set if not resident
SeeAlso: AX=A902h
--------U-2FAA-------------------------------
INT 2F - Player's Tool 3.996b+ - UNINSTALL
AH = AAh
Return: AL = status
00h unloaded successfully
01h unable to unload: in DOS shell
Program: Player's Tool is a game cheater by Dima Yakunin & Andy Robinson
SeeAlso: AH=ABh"Player's Tool",AH=ACh"Player's Tool",INT 10/AH=AAh
--------U-2FAA00-----------------------------
INT 2F - VIDCLOCK.COM - INSTALLATION CHECK
AX = AA00h
Return: AL = 00h not installed
FFh installed
Program: VIDCLOCK.COM is a memory-resident clock by Thomas G. Hanlin III
--------U-2FAB-------------------------------
INT 2F - Player's Tool 3.996b+ - INSTALLATION CHECK
AH = ABh
Return: BH = FFh if installed
BL = DOS shell state
01h in DOS shell
00h not in DOS shell
SeeAlso: AH=AAh"Player's Tool",AH=ACh"Player's Tool",INT 10/AH=ABh
--------f-2FAB00-----------------------------
INT 2F - Btrieve Multi-User - INSTALLATION CHECK
AX = AB00h
Return: AL = 4Dh if installed
SeeAlso: AX=AB01h,AX=AB02h,INT 7B"Btrieve"
----------2FAB00-----------------------------
INT 2F - SRSoft MODAL PC v2+ - INSTALLATION CHECK / GET VERSION
AX = AB00h
Return: AX = 5253h ('SR' byte-swapped) if installed
BX = MODAL PC version (BL = major, BH = minor)
Program: MODAL PC is an algorithm/real-system simulation package by SR Soft
using Petri-nets to describe simulated objects
SeeAlso: AX=AB01h"MODAL",AX=AB02h"MODAL",AX=AB06h"MODAL"
--------f-2FAB01-----------------------------
INT 2F - Btrieve Multi-User - EXECUTE Btrieve OPERATION
AX = AB01h
BX = process ID
DS:DX -> 38-byte parameter record (see #3011 at INT 7B"Btrieve")
Return: AL = status
00h OK
other retry after calling INT 7F/AX=0200h
SeeAlso: AX=AB00h"Btrieve",AX=AB02h"Btrieve",INT 7B"Btrieve",INT 7F/AX=0200h
----------2FAB01-----------------------------
INT 2F - SRSoft MODAL PC v2+ - GET PROCESS RUN PARAMETER
AX = AB01h
Return: AX = 5253h ('SR' byte-swapped) if installed
BL = run parameter
00h normal process
01h run with tracing enabled
02h run initialization process (first thread of main task)
SeeAlso: AX=AB00h"MODAL",AX=AB02h"MODAL"
--------f-2FAB02-----------------------------
INT 2F - Btrieve Multi-User - GET NEW PROCESS ID
AX = AB02h
Return: AL = 00h successful
BX = process ID
AL > 00h failed, retry after calling INT 7F/AX=0200h
SeeAlso: AX=AB00h,AX=AB01h,INT 7B"Btrieve",INT 7F/AX=0200h
----------2FAB02-----------------------------
INT 2F - SRSoft MODAL PC v2+ - SET PROCESS EXIT CODE
AX = AB02h
BL = exit code
Return: AX = 5253h ('SR' byte-swapped) if installed
SeeAlso: AX=AB00h"MODAL",AX=AB01h"MODAL",AX=AB03h"MODAL"
----------2FAB03-----------------------------
INT 2F - SRSoft MODAL PC v2+ - ALLOCATE COMMON MEMORY
AX = AB03h
BX = required size of common memory for variables/semaphores in bytes
Return: AX = 5253h ('SR' byte-swapped) if installed
SeeAlso: AX=AB00h"MODAL",AX=AB02h"MODAL",AX=AB04h"MODAL"
----------2FAB04-----------------------------
INT 2F - SRSoft MODAL PC v2+ - GET ALL COMMON VARIABLES AND SEMAPHORES
AX = AB04h
DS:DX -> buffer for common data
Return: AX = 5253h ('SR' byte-swapped) if installed
CF clear if successful
CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB03h"MODAL",AX=AB05h"MODAL",AX=AB06h,AX=AB07h
----------2FAB05-----------------------------
INT 2F - SRSoft MODAL PC v2+ - SET ALL COMMON VARIABLES AND SEMAPHORES
AX = AB05h
DS:DX -> buffer containing common data
Return: AX = 5253h ('SR' byte-swapped) if installed
CF clear if successful
CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB03h"MODAL",AX=AB04h"MODAL",AX=AB06h,AX=AB07h
----------2FAB06-----------------------------
INT 2F - SRSoft MODAL PC v2+ - GET A COMMON VARIABLE OR SEMAPHORE
AX = AB06h
BX = offset of variable or semaphore in common memory
CX = variable/semaphore size in bytes
DS:DX -> buffer for variable or semaphore
Return: AX = 5253h ('SR' byte-swapped) if installed
CF clear if successful
CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB04h,AX=AB05h,AX=AB07h
----------2FAB07-----------------------------
INT 2F - SRSoft MODAL PC v2+ - SET A COMMON VARIABLE OR SEMAPHORE
AX = AB07h
BX = offset of variable or semaphore in common memory
CX = variable/semaphore size in bytes
DS:DX -> buffer containing variable or semaphore
Return: AX = 5253h ('SR' byte-swapped) if installed
CF clear if successful
CF set on error
SeeAlso: AX=AB00h"MODAL",AX=AB04h,AX=AB05h,AX=AB06h
--------U-2FAC-------------------------------
INT 2F u - Player's Tool 3.996b+ - POP UP
AH = ACh
Return: AX = 1001h
SeeAlso: AH=AAh"Player's Tool",AH=ABh"Player's Tool"
--------V-2FAC00-----------------------------
INT 2F - DOS 4.01+ GRAPHICS.COM - INSTALLATION CHECK
AX = AC00h
Return: AX = FFFFh
ES:DI -> ??? (graphics data?) (not documented)
Note: this installation check was moved here to avoid the conflict with the
CD-ROM extensions that occurred in DOS 4.00
SeeAlso: AX=1500h"GRAPHICS"
--------V-2FAC00DI1092-----------------------
INT 2F - QRIP/TSR - GIVE CPU TO QRIP
AX = AC00h
DI = 1092h
Return: nothing
Program: QRIP/TSR is a shareware TSR by Shane Hathaway implementing the Remote
Imaging Protocol (RIP, RIPscrip) used by several BBS systems to
provide a graphical user interface
Desc: give QRIP some CPU time to update music and flashing timers
Notes: if DI <> 1092h on entry, QRIP chains the call
this function should be called regularly whenever the terminal program
is otherwise idle; the updates are automatically performed on any
other QRIP call
SeeAlso: AX=AC01h,AX=ACF0h
--------V-2FAC01DI1092-----------------------
INT 2F - QRIP/TSR - CHANGE INTERNAL FLAGS
AX = AC01h
DI = 1092h
BX = flags to be turned on (see #2174)
CX = flags to be turned off (see #2174)
Return: AX = 9142h if installed
DX = DOS-takeover flag (nonzero if QRIP able to take over DOS)
---if DX nonzero---
BX = QRIP version number in hex (BH = major, BL = minor)
CX = new flags (see #2174)
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC00h/DI=1092h,AX=ACF0h
Bitfields for QRIP internal flags:
Bit(s) Description (Table 2174)
0 ANSI emulation enabled (default on)
1 RIP emulation enabled (default on)
2 graphical commands allowed (default on)
3 TTY text allowed (default on)
4 disable @ variables (default off in TSR mode)
5 wait for key on RIP "end scene" command (default off)
6 anti-stripping (default off in TSR mode)
7 sound enabled (default on)
8 automatic message filter (default off in TSR mode)
9 display-only mode (no user prompts)
10 TTY text suppression (default off in TSR mode)
11-15 reserved
--------V-2FAC02DI1092-----------------------
INT 2F - QRIP/TSR - TURN OFF GRAPHICS SCREEN
AX = AC02h
DI = 1092h
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC03h,AX=ACF0h
--------V-2FAC03DI1092-----------------------
INT 2F - QRIP/TSR - TURN ON GRAPHICS SCREEN
AX = AC03h
DI = 1092h
Return: nothing
Notes: if DI <> 1092h on entry, QRIP chains the call
this function does not restore the contents of the screen (see AX=AC15h)
SeeAlso: AX=AC02h,AX=AC14h,AX=AC15h
--------V-2FAC04DI1092-----------------------
INT 2F - QRIP/TSR - OUTPUT STRING THROUGH QRIP
AX = AC04h
DI = 1092h
DX:BX -> string
CX = length of string
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC05h,AX=AC09h,AX=AC0Ah,AX=ACF0h
--------V-2FAC05DI1092-----------------------
INT 2F - QRIP/TSR - OUTPUT NULL-TERMINATED STRING THROUGH QRIP
AX = AC05h
DI = 1092h
DX:BX -> ASCIZ string
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC04h,AX=AC06h,AX=AC09h,AX=AC0Ah,AX=ACF0h
--------V-2FAC06DI1092-----------------------
INT 2F - QRIP/TSR - RECEIVE CHARACTERS FROM QRIP
AX = AC06h
DI = 1092h
Return: AX = character to send to BBS (0001h-00FFh) or special code (see #2175)
BX = string-waiting flag
0001h entire string waiting to be sent to terminal (call AX=AC0Ch)
CX = DX = AX
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC04h,AX=AC05h,AX=AC0Ch,AX=AC16h,AX=AC18h,AX=AC1Ah
(Table 2175)
Values for QRIP special codes:
0000h if none
0100h wait for user keypress (must call AX=AC16h/BL=00h or AX=AC18h)
0101h both/middle mouse button pressed
0102h entering block mode (up/download) (call AX=AC1Ah)
0103h right mouse button pressed
0104h BBS requested status bar on
0105h BBS requested status bar off
0106h BBS requested VT-102 terminal emulation
(keypad keys should send VT-102 escape codes)
0107h BBS requested VT-102 mode off
0108h BBS requested doorway mode (raw IBM keyboard ASCII/scan code pairs)
0109h BBS requested doorway mode off
010Ah hotkey mode on
010Bh hotkey mode off
010Ch BBS requested Tab-key button changing on
010Dh BBS requested Tab-key mode off
010Eh XOFF (use flow control to stop incoming characters)
010Fh XON (use flow control to resume incoming characters)
0110h-0119h BBS requested application (0-9) be run
application 0 should be a standard text editor
01FFh send ASCII 00h to BBS
Note: for special codes 0104h to 010Dh, the terminal program should report
any mode changes it make in response by calling AX=AC16h
--------V-2FAC07DI1092-----------------------
INT 2F - QRIP/TSR - GET FONT DIRECTORY
AX = AC07h
DI = 1092h
Return: DX:BX -> 80-byte internal buffer containing ASCIZ font directory name
Notes: if DI <> 1092h on entry, QRIP chains the call
the application may change the font directory by overwriting the
returned buffer, ensuring that it does not exceed 80 bytes incl. NUL
if changed, the new path will not become effective until the graphics
screen is reinitialized
SeeAlso: AX=AC08h,AX=ACF0h
--------V-2FAC08DI1092-----------------------
INT 2F - QRIP/TSR - GET ICON DIRECTORY
AX = AC08h
DI = 1092h
Return: DX:BX -> 80-byte internal buffer containing ASCIZ icon directory name
Notes: if DI <> 1092h on entry, QRIP chains the call
the application may change the icon directory by overwriting the
returned buffer, ensuring that it does not exceed 80 bytes incl. NUL,
and includes a trailing backslash
if changed, the new path becomes effective immediately
SeeAlso: AX=AC07h,AX=ACF0h
--------V-2FAC09DI1092-----------------------
INT 2F - QRIP/TSR - OUTPUT STRING THROUGH QRIP
AX = AC09h
DI = 1092h
DX:BX -> string
CX = length of string
Return: AX = character to send to BBS (0001h-00FFh) or special code (see #2175)
BX = string-waiting flag
0001h entire string waiting to be sent to terminal (call AX=AC0Ch)
CX = DX = AX
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC04h,AX=AC06h,AX=AC0Ah,AX=ACF0h
--------V-2FAC0ADI1092-----------------------
INT 2F - QRIP/TSR - OUTPUT NULL-TERMINATED STRING THROUGH QRIP
AX = AC0Ah
DI = 1092h
DX:BX -> ASCIZ string
Return: AX = character to send to BBS (0001h-00FFh) or special code (see #2175)
BX = string-waiting flag
0001h entire string waiting to be sent to terminal (call AX=AC0Ch)
CX = DX = AX
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC05h,AX=AC06h,AX=AC09h,AX=ACF0h
--------V-2FAC0BDI1092-----------------------
INT 2F - QRIP/TSR - EXECUTE RIP "END SCENE" COMMAND
AX = AC0Bh
DI = 1092h
Return: nothing
Notes: if DI <> 1092h on entry, QRIP chains the call
enables all mouse buttons and cancels the RIP timeout
SeeAlso: AX=AC01h,AX=AC04h,AX=ACF0h
--------V-2FAC0CDI1092-----------------------
INT 2F - QRIP/TSR - GET STRING TO BE SENT TO BBS
AX = AC0Ch
DI = 1092h
Return: AX = status
0000h nothing to be sent
0001h a string is waiting to be sent
DX:BX -> string to be sent (may contain NULs)
CX = length of string
0002h special code waiting (call AX=AC06h)
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC06h,AX=ACF0h
--------V-2FAC0DDI1092-----------------------
INT 2F - QRIP/TSR - SET PROTECTED SCREEN AREA
AX = AC0Dh
DI = 1092h
CL = number of text lines at bottom of screen to protect (00h = off)
BL = attribute with which to fill area (bit 7 = high-int. background)
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC0Eh,AX=AC0Fh,AX=AC10h,AX=ACF0h
--------V-2FAC0EDI1092-----------------------
INT 2F - QRIP/TSR - WRITE ASCIZ STRING IN PROTECTED AREA
AX = AC0Eh
DI = 1092h
DX:BX -> ASCIZ string to be written
CL = column at which to begin writing
CH = row number within protected area (00h = first line)
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC0Dh,AX=AC0Fh,AX=AC10h,AX=ACF0h
--------V-2FAC0FDI1092-----------------------
INT 2F - QRIP/TSR - SCROLL PROTECTED AREA
AX = AC0Fh
DI = 1092h
BH,BL = row,column of upper-left corner in protected area
DH,DL = row,column of lower-right corner
CL = number of lines to scroll up
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC0Dh,AX=AC0Eh,AX=AC10h,AX=ACF0h
--------V-2FAC10DI1092-----------------------
INT 2F - QRIP/TSR - SET OUTPUT COLOR FOR PROTECTED AREA
AX = AC10h
DI = 1092h
BL = new attribute (bit 7 set for high-intensity background)
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC0Dh,AX=AC0Eh,AX=AC0Fh,AX=AC11h,AX=ACF0h
--------V-2FAC11DI1092-----------------------
INT 2F - QRIP/TSR - CONVERT PROTECTED AREA TO ENTIRE SCREEN
AX = AC11h
DI = 1092h
BX = mode (0000h = normal protect, 0001h = allow full-screen access)
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC0Dh,AX=AC0Eh,AX=AC0Fh,AX=AC10h,AX=AC12h,AX=ACF0h
--------V-2FAC12DI1092-----------------------
INT 2F - QRIP/TSR - BEGIN POPUP-WINDOW MODE
AX = AC12h
DI = 1092h
Return: nothing
Notes: if DI <> 1092h on entry, QRIP chains the call
while popup-mode is in effect, the terminal program can write to the
screen (and easily restore it) by outputting a RIP file with AX=AC04h
or AX=AC05h
QRIP will automatically drop out of popup-window mode if the terminal
program invokes RIP pick-lists
any changes to the protected area will be restored when popup-window
mode is cancelled
SeeAlso: AX=AC04h,AX=AC11h,AX=AC13h,AX=ACF0h
--------V-2FAC13DI1092-----------------------
INT 2F - QRIP/TSR - END POPUP-WINDOW MODE
AX = AC13h
DI = 1092h
Return: nothing
Notes: if DI <> 1092h on entry, QRIP chains the call
restores screen
SeeAlso: AX=AC12h,AX=ACF0h
--------V-2FAC14DI1092-----------------------
INT 2F - QRIP/TSR - SAVE GRAPHICS SCREEN AND SWITCH TO TEXT MODE
AX = AC14h
DI = 1092h
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC03h,AX=AC15h
--------V-2FAC15DI1092-----------------------
INT 2F - QRIP/TSR - RESTORE GRAPHICS SCREEN
AX = AC15h
DI = 1092h
Return: nothing
Desc: restores the graphics screen saved by the last call to AX=AC14h
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC03h,AX=AC14h
--------V-2FAC16DI1092-----------------------
INT 2F - QRIP/TSR - REPORT MODE CHANGE TO QRIP
AX = AC16h
DI = 1092h
BL = new mode
00h terminate key wait
01h status bar on
02h status bar off
03h VT-102 mode on
04h VT-102 mode off
05h doorway mode on
06h doorway mode off
07h hotkeys mode on
08h hotkeys mode off
09h tabkey mode on
0Ah tabkey mode off
Return: nothing
Notes: if DI <> 1092h on entry, QRIP chains the call
all modes default to OFF when QRIP is first installed
--------V-2FAC17DI1092-----------------------
INT 2F - QRIP/TSR - CALL (EXECUTE) A RIP FILE
AX = AC17h
DI = 1092h
DX:BX -> ASCIZ filename for RIP file to be executed
Return: nothing
Notes: if DI <> 1092h on entry, QRIP chains the call
the specified file may be in the current icon directory, the QRIP
startup directory, or the current directory; any pathnames specified
with the filename are ignored
--------V-2FAC18DI1092-----------------------
INT 2F - QRIP/TSR - SEND USER KEY TO QRIP
AX = AC18h
DI = 1092h
BX = key (00xxh is normal ASCII, xx00h is an extended key)
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC06h,AX=ACF0h
--------V-2FAC19DI1092-----------------------
INT 2F - QRIP/TSR - HANGUP
AX = AC19h
DI = 1092h
Return: nothing
Desc: inform QRIP that carrier has been lost
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=ACF0h
--------V-2FAC1ADI1092-----------------------
INT 2F - QRIP/TSR - GET RIP_ENTER_BLOCK_MODE INFORMATION
AX = AC1Ah
DI = 1092h
Return: AH = requested protocol (see #2176)
AL = file type (see #2177)
DX:BX -> ASCIZ filename or 0000h:0000h
CX = length of filename
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=ACF0h
(Table 2176)
Values for QRIP protocol identifier:
00h Xmodem (checksum)
01h Xmodem-CRC
02h Xmodem-1K
03h Xmodem-1K-G
04h Kermit
05h Ymodem
06h Ymodem-G
07h Zmodem with crash recovery
08h-0Fh same as 00h-07h, but for uploading instead of downloading
SeeAlso: #2177
(Table 2177)
Values for QRIP file type:
00h RIP file sequence to be displayed
01h RIP file sequence to be stored in icon directory
02h ICN file sequence to be stored in icon directory
03h HLP file sequence to be stored, then auto-loaded if needed
04h COMPOSITE DYNAMIC file sequence (batch protocols only)
05h ACTIVE DYNAMIC file sequence (batch protocols only)
Note: for file types 04h and 05h, any .RIP or .ICN files are stored in
the icon directory; in mode 05h, any .RIP files are also played
back as they are received
SeeAlso: #2176
--------V-2FAC1BDI1092-----------------------
INT 2F - QRIP/TSR - SET SYSTEM FONT SIZE
AX = AC1Bh
DI = 1092h
BX = font size (see #2178)
Return: nothing
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC04h,AX=ACF0h
(Table 2178)
Values for QRIP font size specifier:
00h 8x8 font, 80x43 screen
01h 7x8 font, 90x43 screen
02h 8x14 font, 80x25 screen
03h 7x14 font, 90x25 screen
04h 16x14 font, 40x25 screen
--------V-2FACF0DI1092-----------------------
INT 2F - QRIP/TSR - INSTALLATION CHECK
AX = ACF0h
DI = 1092h
Return: AX = 9142h if installed
DX = DOS-takeover flag (nonzero if QRIP able to take over DOS)
---if DX nonzero---
BX = QRIP version number in hex (BH = major, BL = minor)
CX = current flags (see AX=AC01h)
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=AC00h/DI=1092h,AX=AC01h,AX=AC04h,AX=AC06h,AX=AC1Ah,AX=ACFFh
--------V-2FACFFDI1092-----------------------
INT 2F - QRIP/TSR - UNINSTALL
AX = ACFFh
DI = 1092h
Return: AX = status
0000h unable to remove (interrupt vector hooked by another prog)
0001h successful
0002h unable to take over DOS at this time (retry uninstall)
Note: if DI <> 1092h on entry, QRIP chains the call
SeeAlso: AX=ACF0h
--------V-2FAD00-----------------------------
INT 2F U - DOS 3.3+ DISPLAY.SYS internal - INSTALLATION CHECK
AX = AD00h
Return: AL = FFh if installed
BX = ??? (0100h for MS-DOS 3.3+)
Note: DOS 5+ DISPLAY.SYS chains to previous handler if AL is not one of the
subfunctions listed here
SeeAlso: AX=AD01h"DISPLAY",AX=AD02h"DISPLAY"
--------O-2FAD00-----------------------------
INT 2F U - DR DOS 3.41-5.0, Novell DOS 7 KEYB - INSTALLATION CHECK
AX = AD00h
Return: AX = FFFFh if installed
flags destroyed
SeeAlso: AX=AD80h"Novell"
--------V-2FAD01-----------------------------
INT 2F U - DOS 3.3+ DISPLAY.SYS internal - SET ACTIVE CODE PAGE
AX = AD01h
BX = new code page (see #1060 at INT 21/AX=6602h)
Return: CF clear if successful
AX = 0001h
CF set on error (unsupported code page)
AX = 0000h
SeeAlso: AX=AD02h"DISPLAY"
--------O-2FAD01-----------------------------
INT 2F U - DR DOS 3.41,5.0 KEYB - GET CONFIGURATION
AX = AD01h
Return: BX = current code page (see #1060 at INT 21/AX=6602h)
CX = current keyboard layout (0100h = US, 0102h = foreign)
ES = resident code segment
SeeAlso: AX=AD00h"KEYB",AX=AD02h"KEYB",AX=AD83h"KEYB"
--------V-2FAD02-----------------------------
INT 2F U - DOS 3.3+ DISPLAY.SYS internal - GET ACTIVE CODE PAGE
AX = AD02h
Return: CF set if code page never set
AX = 0001h
BX = FFFFh (assume first hardware code page)
CF clear if successful
BX = current code page (see #1060 at INT 21/AX=6602h)
SeeAlso: AX=AD01h"DISPLAY",AX=AD03h
--------O-2FAD02-----------------------------
INT 2F U - Novell DOS 7 KEYB - ???
AX = AD02h
DX = ??? (0000h)
Return: AX = FFFFh if installed
flags destroyed
SeeAlso: AX=AD01h"KEYB"
--------V-2FAD03-----------------------------
INT 2F U - DOS 3.3+ DISPLAY.SYS internal - GET CODE PAGE INFORMATION
AX = AD03h
ES:DI -> buffer for code page information (see #2179)
CX = size of buffer in bytes
Return: CF set if buffer too small
CF clear if successful
ES:DI buffer filled
SeeAlso: AX=AD01h,AX=AD02h
Format of DOS 5.0-6.0 DISPLAY.SYS code page information:
Offset Size Description (Table 2179)
00h WORD number of software code pages
02h WORD ??? (0003h)
04h WORD number of hardware code pages
06h N WORDs hardware code page numbers (see #1060 at INT 21/AX=6602h)
N WORDs software (prepared) code pages (FFFFh if not yet prepared)
--------V-2FAD04-----------------------------
INT 2F U - DOS 4.x only DISPLAY.SYS internal - ???
AX = AD04h
???
Return: ???
--------V-2FAD10-----------------------------
INT 2F U - DOS 4.x DISPLAY.SYS internal - INSTALLATION CHECK???
AX = AD10h
???
Return: AX = FFFFh
BX = ??? (0100h in PC-DOS 4.01)
--------V-2FAD10-----------------------------
INT 2F U - DOS 5+ DISPLAY.SYS internal - ???
AX = AD10h
???
Return: CF clear if successful
CF set on error
Note: this function is a NOP if the active code page has never been set
(AX=AD02h returns BX=FFFFh); its purpose otherwise is not known
--------V-2FAD40-----------------------------
INT 2F - DOS 4.0+ - ???
AX = AD40h
DX = ???
???
Return: ???
Note: called by PC-DOS 4.01 PRINT.COM
--------K-2FAD80-----------------------------
INT 2F u - MS-DOS 3.3+ KEYB.COM internal - INSTALLATION CHECK
AX = AD80h
Return: AL = FFh if installed
BX = version number (BH = major, BL = minor)
ES:DI -> internal data (see #2180)
AH destroyed (set to FFh by some implementations/versions)
Notes: MS-DOS 3.30, PC-DOS 4.01, and MS-DOS 5.00 all report version 1.00.
this function was undocumented prior to the release of DOS 5.0
SeeAlso: AX=AD80h"Novell",AX=AD81h,AX=AD82h,AX=AD83h
Format of KEYB internal data:
Offset Size Description (Table 2180)
00h DWORD original INT 09
04h DWORD original INT 2F
08h 6 BYTEs ???
0Eh WORD flags (see #2181)
10h BYTE ???
11h BYTE ???
12h 4 BYTEs ???
16h 2 BYTEs country ID letters
18h WORD current code page (see #1060 at INT 21/AX=6602h)
---DOS 3.3---
1Ah WORD pointer to first item in list of code page tables???
1Ch WORD pointer to ??? item in list of code page tables
1Eh 2 BYTEs ???
20h WORD pointer to key translation data (see #2183)
22h WORD pointer to last item in code page table list (see #2182)
24h 9 BYTEs ???
---DOS 4.01---
1Ah 2 BYTEs ???
1Ch WORD pointer to first item in list of code page tables???
1Eh WORD pointer to ??? item in list of code page tables
20h 2 BYTEs ???
22h WORD pointer to key translation data (see #2183)
24h WORD pointer to last item in code page table list (see #2182)
26h 9 BYTEs ???
Note: at least in MS-DOS v6.22, the signature "SHARED DATA" immediately
precedes this structure
Bitfields for MS-DOS v6.22 KEYB flags:
Bit(s) Description (Table 2181)
15 INT 16/AH=1xh supported (INT 16h/AH=92h call returns AH<=80h)
14 INT 16/AH=2xh supported (INT 16h/AH=A2h call returns AH<=80h)
13 unused (0)
12 network installed (INT 2F/AX=B800h)
11 original IBM PC (BIOS date 1981)
10 PC or PC/XT (BIOS machine type byte of FBh or FEh)
9 PC Convertible (BIOS machine type byte of F9h); use INT 15/AX=4104h
8 unused (0)
7 IBM PS/2 model 30 (BIOS machine type byte of FAh)
6 IBM AT (BIOS machine type FCh)
5 IBM PS/2 (BIOS machine type F8h)
4 PS/2 and unknown only:
non-standard 8042 or no AT->PC scancode translation???
3 temporary flag???
2-0 ???
SeeAlso: #2180
Format of code page table list entries:
Offset Size Description (Table 2182)
00h WORD pointer to next item, FFFFh = last
02h WORD code page (see #1060 at INT 21/AX=6602h)
04h 2 BYTEs ???
Format of KEYB translation data:
Offset Size Description (Table 2183)
00h WORD size of data in bytes, including this word
02h N-2 BYTEs ???
--------K-2FAD80-----------------------------
INT 2F u - Novell DOS 7 KEYB.COM - INSTALLATION CHECK
AX = AD80h
Return: AX = FFFFh if installed
CX = Novell DOS KEYB version number (CL = major, CH = minor)
DX = current keyboard codepage
ES:DI -> internal data and tables (ES=FFFEh if KEYB in HMA)
flags destroyed
Note: versions: v2.08 (original ship 4/94), v2.09 (Update 10, 11/18/94),
v2.10 (Update 12, 2/22/95), v2.11 (Update 13, 5/8/95),
v2.12 (Update 14, 7/31/95)
SeeAlso: AX=AD80h"MS-DOS"
--------K-2FAD81-----------------------------
INT 2F - DOS 3.3+ KEYB.COM - SET KEYBOARD CODE PAGE
AX = AD81h
BX = code page (see #1060 at INT 21/AX=6601h)
Return: CF set on error
AX = 0001h (code page not available)
CF clear if successful
Notes: called by DISPLAY.SYS
this function was undocumented prior to the release of DOS 5.0
SeeAlso: AX=AD80h,AX=AD82h
--------K-2FAD82-----------------------------
INT 2F - DOS 3.3+ KEYB.COM - SET KEYBOARD MAPPING
AX = AD82h
BL = new state
00h US keyboard (Control-Alt-F1)
FFh foreign keyboard (Control-Alt-F2)
Return: CF set on error (BL not 00h or FFh)
CF clear if successful
Note: this function was undocumented prior to the release of DOS 5.0
SeeAlso: AX=AD80h,AX=AD81h,AX=AD83h
--------K-2FAD83-----------------------------
INT 2F - DOS 5+ KEYB.COM - GET KEYBOARD MAPPING
AX = AD83h
Return: BL = current state
00h US keyboard
FFh foreign keyboard
SeeAlso: AX=AD82h
--------l-2FAE00-----------------------------
INT 2F U - DOS 3.3+ internal - INSTALLABLE COMMAND - INSTALLATION CHECK
AX = AE00h
DX = magic value FFFFh
CH = FFh
CL = length of command line tail (4DOS v4.0)
DS:BX -> command line buffer (see #2184)
DS:SI -> command name buffer (see #2185)
DI = 0000h (4DOS v4.0)
Return: AL = FFh if this command is a TSR extension to COMMAND.COM
AL = 00h if the command should be executed as usual
Notes: This call 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.
APPEND hooks this call, to allow subsequent APPEND commands to
execute without re-running APPEND
SeeAlso: AX=AE01h
Format of COMMAND.COM command line buffer:
Offset Size Description (Table 2184)
00h BYTE max length of command line, as in INT 21/AH=0Ah
01h BYTE count of bytes to follow, excluding terminating 0Dh
N BYTEs command line text, terminated by 0Dh
Format of command name buffer:
Offset Size Description (Table 2185)
00h BYTE length of command name
01h N BYTEs uppercased command name (blank-padded to 11 chars by 4DOS v4)
--------l-2FAE01-----------------------------
INT 2F U - DOS 3.3+ internal - INSTALLABLE COMMAND - EXECUTE
AX = AE01h
DX = magic value FFFFh
CH = 00h
CL = length of command name (4DOS v4.0)
DS:BX -> command line buffer (see #2184)
DS:SI -> command name buffer (see #2185)
Return: DS:SI buffer updated
if length byte is nonzero, the following bytes contain the uppercase
internal command to execute and the command line buffer contains the
command's parameters (the first DS:[SI] bytes are ignored)
Notes: this call requests execution of the command which a previous call to
AX=AE00h indicated was resident
APPEND hooks this call
BUG: Novell DOS 7.0's COMMAND.COM (prior to Update 12) will attempt to run
a disk program with the indicated name even if the returned length
byte is zero, because the register used to flag this case is
clobbered without first checking it. The workaround is to set the
command name buffer to "REM" followed by enough blanks to pad out
the original command's length, which will also work with MS-DOS 6.
(from padgett@tccslr.dnet.mmc.com)
SeeAlso: AX=AE00h
--------O-2FAF00-----------------------------
INT 2F - WinDOS v2.11 - INSTALLATION CHECK
AX = AF00h
Return: AL = FFh if installed
Program: WinDOS is a DOS clone (claimed to be mostly MS-DOS 5.0 API compatible)
written by Heiko Goemann
SeeAlso: AX=AF01h"WinDOS",INT 21/AH=30h
----------2FAF00-----------------------------
INT 2F U - ???
AX = AF00h
???
Return: AX = 0000h if interface supported
SeeAlso: AX=AF02h,AX=AF03h,AX=AF04h,AX=AF13h,AX=AF30h
--------O-2FAF01-----------------------------
INT 2F - WinDOS v2.11 - TURN ON ONLINE MODE
AX = AF01h
Return: nothing
Desc: indicate that the user will not exchange floppy disks, allowing WinDOS
to cache disk sectors in memory and avoid writing modified sectors
back out to the floppy disk
SeeAlso: AX=AF00h"WinDOS",AX=AF02h"WinDOS"
--------O-2FAF02-----------------------------
INT 2F - WinDOS v2.11 - TURN OFF ONLINE MODE
AX = AF02h
Return: nothing
Desc: indicate that the floppy disk may be removed, and that WinDOS should
write all buffered sectors out to the floppy disk
SeeAlso: AX=AF00h"WinDOS",AX=AF01h"WinDOS"
----------2FAF02-----------------------------
INT 2F U - ???
AX = AF02h
???
Return: ES = ???
SeeAlso: AX=AF00h
--------O-2FAF03-----------------------------
INT 2F - WinDOS v2.11 - TURN VIDMEM ON
AX = AF03h
Return: AX = status
0000h successful
0001h CPU not in mode set by DOS386=On
0002h video adapter in graphics mode
0003h memory chain corrupted
SeeAlso: AX=AF00h"WinDOS",AX=AF04h"WinDOS",AX=AF05h"WinDOS"
----------2FAF03-----------------------------
INT 2F U - ???
AX = AF03h
???
Return: DX = ???
SeeAlso: AX=AF00h
--------O-2FAF04-----------------------------
INT 2F - WinDOS v2.11 - TURN VIDMEM OFF
AX = AF04h
Return: AX = status
0000h successful
0001h video memory is in use
SeeAlso: AX=AF00h"WinDOS",AX=AF03h"WinDOS",AX=AF05h"WinDOS"
----------2FAF04-----------------------------
INT 2F U - ???
AX = AF04h
???
Return: ???
SeeAlso: AX=AF00h
--------O-2FAF05-----------------------------
INT 2F - WinDOS v2.11 - GET VIDMEM STATE
AX = AF05h
Return: AX = status (0000h off, 0001h on)
SeeAlso: AX=AF00h"WinDOS",AX=AF03h"WinDOS",AX=AF04h"WinDOS"
----------2FAF05-----------------------------
INT 2F U - ???
AX = AF05h
???
Return: ???
SeeAlso: AX=AF00h
--------O-2FAF06-----------------------------
INT 2F - WinDOS v2.11 - MAKE PROGRAM UNBREAKABLE
AX = AF06h
DS:DX -> break handler
DI:BX = stack to use for break handler
Return: nothing
Desc: set a handler which should be invoked when Ctrl-C is pressed instead of
aborting the program
SeeAlso: AX=AF00h"WinDOS",AX=AF0Ah"WinDOS",AX=AF0Ch"WinDOS"
--------O-2FAF07-----------------------------
INT 2F - WinDOS v2.11 - SIGNAL FATAL OVERLAY FAULT
AX = AF07h
Return: never -- system reset
Desc: pop up a window indicating that the system overlay file can not be
loaded
SeeAlso: AX=AF00h"WinDOS",AX=AF08h"WinDOS"
--------O-2FAF08-----------------------------
INT 2F - WinDOS v2.11 - SIGNAL RECOVERABLE OVERLAY FAULT
AX = AF08h
Return: nothing
Desc: pop up a window requesting that a disk containing SH.OVL be inserted
SeeAlso: AX=AF00h"WinDOS",AX=AF07h"WinDOS",AX=AF0Bh
--------O-2FAF09-----------------------------
INT 2F - WinDOS v2.11 - GET TERMINATED PSP
AX = AF09h
Return: DS = PSP segment of most recently ended TSR
SeeAlso: AX=AF00h"WinDOS",AX=AF0Ah
--------O-2FAF0A-----------------------------
INT 2F - WinDOS v2.11 - GET MAIN SHELL PSP
AX = AF0Ah
Return: AX = shell's PSP (same as DS on last call to AX=AF06h)
Desc: get the PSP address of the last program to call AX=AF06h (normally
the main command interpreter)
SeeAlso: AX=AF00h"WinDOS",AX=AF06h"WinDOS",AX=AF09h
--------O-2FAF0B-----------------------------
INT 2F - WinDOS v2.11 - SIGNAL FATAL ERROR
AX = AF0Bh
Return: never -- system reset
Desc: pop up a window indicating a terminal system error
SeeAlso: AX=AF00h"WinDOS",AX=AF07h,AX=AF08h,AX=AF15h"WinDOS"
--------O-2FAF0C-----------------------------
INT 2F - WinDOS v2.11 - GET OTHER MAIN SHELL PARAMETERS
AX = AF0Ch
Return: DI:AX = stack
SI = offset of break handler
Desc: retrieve the parameters last set by AX=AF06h (normally by the main
command interpreter)
SeeAlso: AX=AF00h"WinDOS",AX=AF06h"WinDOS"
--------O-2FAF0D-----------------------------
INT 2F - WinDOS v2.11 - GET CURRENT PARAMETER
AX = AF0Dh
BX = offset of desired parameter in global data area
Return: AX = current value of parameter (AH undefined if byte value)
SeeAlso: AX=AF00h"WinDOS",AX=AF0Eh
--------O-2FAF0E-----------------------------
INT 2F - WinDOS v2.11 - SET CURRENT PARAMETER BYTE VALUE
AX = AF0Eh
BX = offset of desired parameter in global data area
DL = new value of parameter
Return: nothing
SeeAlso: AX=AF00h"WinDOS",AX=AF0Dh
--------O-2FAF0F-----------------------------
INT 2F - WinDOS v2.11 - GET HISTORY SEGMENT
AX = AF0Fh
Return: AX = segment of buffer for input history, or 0000h if none
SeeAlso: AX=AF00h"WinDOS",AX=AF10h"WinDOS"
--------O-2FAF10-----------------------------
INT 2F - WinDOS v2.11 - SET HISTORY SEGMENT
AX = AF10h
BX = segment of new buffer for input history
Return: nothing
Note: the buffer must have been allocated with INT 21/AH=48h
SeeAlso: AX=AF00h"WinDOS",AX=AF0Fh"WinDOS"
--------O-2FAF11-----------------------------
INT 2F - WinDOS v2.11 - FREE XMS BLOCKS
AX = AF11h
Return: nothing
Desc: free all XMS blocks whose XMS identification value (see AX=AF12h)
equals the current PSP
SeeAlso: AX=AF00h"WinDOS",AX=AF12h"WinDOS",INT 21/AH=50h
--------O-2FAF12-----------------------------
INT 2F - WinDOS v2.11 - SET XMS IDENTIFICATION VALUE
AX = AF12h
DS = new XMS identification value (normally caller's PSP segment)
Return: nothing
SeeAlso: AX=AF00h"WinDOS",AX=AF11h"WinDOS"
----------2FAF12-----------------------------
INT 2F U - ???
AX = AF12h
???
Return: ES = ???
SeeAlso: AX=AF00h
--------O-2FAF13-----------------------------
INT 2F - WinDOS v2.11 - SET ASSIGN VALUE
AX = AF13h
BL = number of drive to remap (00h = A:)
DL = number of drive to be accessed via drive number BL
Return: nothing
Desc: remap a drive letter
Note: the remapping can be canceled by specifying DL=BL
SeeAlso: AX=AF00h"WinDOS",AX=AF14h"WinDOS",AX=0601h
----------2FAF13-----------------------------
INT 2F U - ???
AX = AF13h
???
Return: ???
SeeAlso: AX=AF00h
--------O-2FAF14-----------------------------
INT 2F - WinDOS v2.11 - GET ASSIGN VALUE
AX = AF14h
BL = drive number (00h = A:)
Return: DL = drive number which is actually accessed by drive number BL
Desc: determine the current mapping for a drive
SeeAlso: AX=AF00h"WinDOS",AX=AF13h"WinDOS",AX=0601h
--------O-2FAF15-----------------------------
INT 2F - WinDOS v2.11 - SIGNAL STACK ERROR
AX = AF15h
Return: never -- system reset
Desc: pop up a window indicating a stack overflow
SeeAlso: AX=AF00h"WinDOS",AX=AF0Bh"WinDOS"
--------O-2FAF16-----------------------------
INT 2F - WinDOS v2.11 - GET SIMPLE TRUENAME
AX = AF16h
DS:SI -> path to be canonicalized
ES:DI -> buffer for canonicalized filename/pathname
Return: CF clear if successful
AX = 0000h
CF set on error
AX = DOS error code (see #0980 at INT 21/AH=59h)
Desc: partially canonicalize a path, omitting SUBST, JOIN, ASSIGN, and
network redirections
SeeAlso: AX=AF00h"WinDOS",INT 21/AH=60h
--------O-2FAF17-----------------------------
INT 2F - WinDOS v2.11 - QUERY FOR NEW CURRENT DRIVE
AX = AF17h
Return: nothing
Desc: pop up a dialog allowing the user to select a new default drive
SeeAlso: AX=AF00h"WinDOS"
--------O-2FAF18-----------------------------
INT 2F - WinDOS v2.11 - SET CTRL-C/CTRL-BREAK DISABLE FLAG
AX = AF18h
DL = new break-checking state (00h enabled, 01h disabled)
Return: nothing
SeeAlso: AX=AF00h"WinDOS"
--------O-2FAF19-----------------------------
INT 2F - WinDOS v2.11 - SET HEAD SETTLE FLAG
AX = AF19h
DL = new state
00h diskette head settling time reset to 15ms before each access
01h no additional head settling time used between accesses
Return: nothing
SeeAlso: AX=AF00h"WinDOS"
--------O-2FAF1A-----------------------------
INT 2F - WinDOS v2.11 - SEARCH FOR NON-FRAGMENTED DISK AREA
AX = AF1Ah
BL = drive (00h = current, 01h = A:, etc.)
CX = number of clusters desired
Return: CF clear if successful
DI = first free cluster on logical drive
BP = first cluster of contiguous free area
AX destroyed
CF set on error
AX = DOS error code (see #0980 at INT 21/AH=59h)
Desc: attempt to find an area of the disk containing the specified number
of contiguous unallocated clusters
SeeAlso: AX=AF00h"WinDOS"
----------2FAF30-----------------------------
INT 2F U - ???
AX = AF30h
???
Return: ???
SeeAlso: AX=AF00h
--------d-2FAFDE-----------------------------
INT 2F - Disk-Emu - INSTALLATION CHECK / GET VERSION
AX = AFDEh
ES:DI -> 14-byte buffer for data (see #2186)
Return: AX = CFDEh (Carlos Fernandez Disk-Emu) if installed
BX = version (BH = major, BL = minor)
Format of Disk-Emu information data:
Offset Size Description (Table 2186)
00h BYTE number of tracks
01h BYTE sectors per track
02h WORD bytes per sector
04h BYTE number of heads
05h BYTE flag: 00h inactive, 01h active
06h BYTE write protection (00h none, 01h full, 02h pseudo)
07h BYTE saved (00h some unsaved data, 01h all data saved)
08h BYTE disk in memory (00h no, 01h yes)
09h WORD EMS handle
0Bh WORD XMS handle
0Dh BYTE memory type used for disk (00h XMS, 01h EMS)
--------V-2FB000-----------------------------
INT 2F - DOS 3.3+ GRAFTABL.COM - INSTALLATION CHECK
AX = B000h
Return: AL = status
00h not installed, OK to install
01h not installed, not OK to install
FFh installed
Notes: called by DISPLAY.SYS
documented for DOS 5.0, but undocumented in prior versions
SeeAlso: AX=2300h,AX=2E00h,AX=B001h
--------V-2FB001-----------------------------
INT 2F - DOS 3.3+ GRAFTABL.COM - GET GRAPHICS FONT TABLE
AX = B001h
DS:BX -> DWORD buffer for address of 8x8 font table
Return: buffer filled
AL = FFh
Note: PC-DOS 3.30/4.01 and MS-DOS 6.0 set the font table offset to 0130h,
MS-DOS 3.30 sets it to 0030h
SeeAlso: AH=2Eh"GRAFTABL",AX=B000h
--------I-2FB400-----------------------------
INT 2F - IBM PC3270 EMULATION PROG v3 - INSTALLATION CHECK
AX = B400h
Return: AL = FFh if installed
--------I-2FB401-----------------------------
INT 2F - IBM PC3270 EMULATION PROG v3 - GET HOST BUFFER ADDRESS
AX = B401h
Return: ES -> host screen buffer (PC ASCII format)
ES unchanged if communications not started
--------I-2FB402-----------------------------
INT 2F - IBM PC3270 EMULATION PROG v3 - ???
AX = B402h
BX = ???
Return: ???
--------I-2FB403-----------------------------
INT 2F - IBM PC3270 EMULATION PROG v3 - ???
AX = B403h
???
Return: ???
--------I-2FB404-----------------------------
INT 2F - IBM PC3270 EMULATION PROG v3 - ???
AX = B404h
???
Return: ???
--------I-2FB405-----------------------------
INT 2F - IBM PC3270 EMULATION PROG v3 - ???
AX = B405h
???
Return: ???
--------f-2FB700-----------------------------
INT 2F - APPEND - INSTALLATION CHECK
AX = B700h
Return: AL = status
00h not installed
FFh installed
Note: MS-DOS 3.30 APPEND refuses to install itself when run inside TopView or
a TopView-compatible environment
SeeAlso: AX=B702h
--------f-2FB701-----------------------------
INT 2F U - APPEND v3.21 only - GET APPEND PATH
AX = B701h
Return: ES:DI -> active APPEND path
Notes: the only version of APPEND known to support this call is the APPEND
shipped with Microtek MS-DOS 3.21; MS-DOS 3.30-6.00 APPEND displays
"Incorrect APPEND Version" and aborts the caller
use AX=B704h first, and only call this function if that one is not
supported
SeeAlso: AX=B700h,AX=B704h
--------f-2FB702-----------------------------
INT 2F - APPEND - GET VERSION
AX = B702h
Return: AX = FFFFh if not DOS 4.0 APPEND (also if DOS 5.0 APPEND)
AL = major version number
AH = minor version number, otherwise
SeeAlso: AX=B700h,AX=B710h
--------f-2FB703-----------------------------
INT 2F U - DOS 3.3, DOS 5.0 APPEND - HOOK INT 21
AX = B703h
ES:DI -> INT 21 handler APPEND should chain to
Return: ES:DI -> APPEND's INT 21 handler
Note: each invocation of this function toggles a flag which APPEND uses to
determine whether to chain to the user handler or the original
INT 21
SeeAlso: AX=B700h,AX=B706h
--------f-2FB704-----------------------------
INT 2F - DOS 3.3+ APPEND - GET APPEND PATH
AX = B704h
Return: ES:DI -> active APPEND path (128 bytes max)
Note: some versions of append do not support this call, and return ES
unchanged; in this case, you should call AX=B701h to get the APPEND
path
SeeAlso: AX=B701h
--------f-2FB706-----------------------------
INT 2F - DOS 4.0+ APPEND - GET APPEND FUNCTION STATE
AX = B706h
Return: BX = APPEND state (see #2187)
SeeAlso: AX=B700h,AX=B707h
Bitfields for APPEND state:
Bit(s) Description (Table 2187)
0 set if APPEND enabled
1-11 reserved
12 (DOS 5.0) set if APPEND applies directory search even if a drive has
been specified
13 set if /PATH flag active
14 set if /E flag active (environment var APPEND exists)
15 set if /X flag active
--------f-2FB707-----------------------------
INT 2F - DOS 4.0+ APPEND - SET APPEND FUNCTION STATE
AX = B707h
BX = APPEND state bits (see #2187)
SeeAlso: AX=B700h,AX=B706h
--------f-2FB710-----------------------------
INT 2F U - DOS 3.3+ APPEND - GET VERSION INFO
AX = B710h
Return: AX = current APPEND state (see #2187)
BX = ??? (0000h in MS-DOS 3.30 and 5.00)
CX = ??? (0000h in MS-DOS 3.30 and 5.00)
DL = major version
DH = minor version
SeeAlso: AX=B700h,AX=B702h
--------f-2FB711-----------------------------
INT 2F - 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 (also 4B03h and 4Eh if /X active), 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 the next INT 21h call processed by APPEND.
APPEND uses the byte at offset 3Dh in the PSP
(see #0691 at INT 21/AH=26h) to store the flag telling it to
overwrite the filename
BUG: DOS 4.0 APPEND reportedly overwrites DS:DX instead of DS:SI for
INT 21/AH=6Ch
SeeAlso: INT 21/AH=26h,INT 21/AH=4Eh
--------N-2FB800-----------------------------
INT 2F - NETWORK - INSTALLATION CHECK
AX = B800h
Return: AL = status
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
bit 1 LANPUP (LANtastic 4.0)
Notes: this function is supported by PC LAN Program, LAN Manager, LANtastic,
NetWare Lite, SilverNET, 10NET, etc.
LANtastic and NetWare Lite use only BL for the return value, preserving
BH; LAN Manager and DOS LAN Requester return BH=00h. This permits
differentiation between those two groups by setting BH to a nonzero
value before the call and checking its value on return.
SeeAlso: AX=4E53h,AX=B809h
--------N-2FB800CXF041-----------------------
INT 2F - 10NET - INSTALLATION CHECK
AX = B800h
CX = F041h
Return: AL = status
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
bit 1 LANPUP (LANtastic 4.0)
CX = 10Net data segment
CX:DX -> 10Net Configuration Table
(see #0991 at INT 21/AX=5E01h"10NET")
Note: if CX <> F041h on entry, neither CX nor DX will be changed, and this
call becomes identical to the standard installation check above
SeeAlso: AX=B800h"network",INT 21/AX=5E01h"10NET"
--------N-2FB803-----------------------------
INT 2F - NETWORK - GET NETWORK EVENT POST HANDLER
AX = B803h
Return: ES:BX -> current event post handler (see AX=B804h)
Note: this function is supported by PC LAN Program, 10NET v5.0
SeeAlso: AC=B800h,AX=B804h,AX=B903h
--------N-2FB804-----------------------------
INT 2F - NETWORK - SET NETWORK EVENT POST HANDLER
AX = B804h
CX = (10NET) 0370h if 10Windows is hooking post handler
ES:BX -> new event post handler (see #2188)
Notes: used in conjunction with AX=B803h to hook into the network event post
routine
this function is supported by PC LAN Program, 10NET v5.0
The specified handler is called on any network event. Two events are
defined: message received and critical network error.
SeeAlso: AX=B800h,AX=B803h,AX=B904h
(Table 2188)
Values network post routine is called with:
AX = 0000h single block message
DS:SI -> ASCIZ originator name
DS:DI -> ASCIZ destination name
ES:BX -> text header (see #2189)
AX = 0001h start multiple message block
CX = block group ID
DS:SI -> ASCIZ originator name
DS:DI -> ASCIZ destination name
AX = 0002h multiple block text
CX = block group ID
ES:BX -> text header (see #2189)
AX = 0003h end multiple block message
CX = block group ID
AX = 0004h message aborted due to error
CX = block group ID
AX = 0101h server received badly formatted network request
Return: AX = FFFFh (PC LAN will process error)
AX = 0102h unexpected network error
ES:BX -> NCB (see #2425 at INT 5C)
AX = 0103h server received INT 24 error
other registers as for INT 24, except AH is in BH
Return: as below, but only 0000h and FFFFh allowed
Return: AX = response code
0000h user post routine processed message
0001h PC LAN will process message, but message window not displayed
FFFFh PC LAN will process message
Format of text header:
Offset Size Description (Table 2189)
00h WORD length of text (maximum 512 bytes)
02h N BYTEs text of message
Note: all CRLF sequences in message text are replaced by 14h; all other
values below 20h (space) are reserved
--------N-2FB807-----------------------------
INT 2F - NETWORK - GET NetBIOS NAME NUMBER OF MACHINE NAME
AX = B807h
Return: CH = NetBIOS name number of the machine name
SeeAlso: INT 21/AX=5E00h
--------N-2FB808-----------------------------
INT 2F U - NETWORK - RELINK KEYBOARD HANDLER
AX = B808h
ES:BX -> INT 09 handler network should call after it finishes INT 09
Notes: this call replaces the address to which the network software chains on
an INT 09 without preserving the original value. This allows a prior
handler to unlink, but does not allow a new handler to be added
such that the network gets the INT 09 first unless the new handler
completely takes over INT 09 and never chains.
this function is called by the DOS 3.2 KEYBxx.COM
SeeAlso: AX=B908h
--------N-2FB809-----------------------------
INT 2F - NETWORK - LANtastic, NetWare Lite - GET VERSION
AX = B809h
Return: AH = major version
AL = minor version (decimal)
Notes: this function is supported in this form by LANtastic, NetWare Lite,
SilverNET, ...
NetWare Lite returns its own version number rather than a PC LAN
compatibility version
SeeAlso: AX=4E53h,AX=B800h,AX=B809h"PC LAN Program"
--------N-2FB809-----------------------------
INT 2F - NETWORK - PC LAN Program - GET VERSION
AX = B809h
Return: AH = minor version (decimal)
AL = major version
Notes: this function is supported in this form by PC LAN Program, LAN Manager,
the DOS LAN Requester, and 10NET v5.0
10NET returns version 1.10 (AX=0A01h) for compatibility
SeeAlso: AX=4E53h,AX=B800h,AX=B809h"LANtastic"
--------N-2FB80A-----------------------------
INT 2F u - PC Network 1.00 - ???
AX = B80Ah
???
Return: ???
Program: PC Network is an early networking package which was renamed the
IBM PC Local Area Network Program (PC LAN Program) as of v1.10
Note: called by RECEIVER (equivalent to NetWare Lite SERVER)
--------N-2FB80F-----------------------------
INT 2F - DOS LAN Requester - GET START PARAMETERS
AX = B80Fh
CX = size of return data buffer
ES:DI -> return data buffer (see #2190)
Return: AX = status
00h network started
nonzero network not started
CX = number of bytes returned in buffer
ES:DI buffer filled
SeeAlso: AX=B809h"PC LAN Program"
Format of DOS LAN Requester return data buffer:
Offset Size Description (Table 2190)
00h BYTE major version
01h BYTE minor version
02h WORD configuration flags given when network was started (see #2191)
04h 15 BYTEs NET START machine name (space padded)
13h BYTE 00h
14h 9 BYTEs NET START domain name (NULL padded)
1Dh BYTE 00h
1Eh 32 BYTEs /WRK heuristics string (space padded, not terminated)
3Eh WORD /SRV value
40h WORD /ASG value
42h WORD /NBC value
44h WORD /NBS value
46h WORD /BBC value
48h WORD /BBS value
4Ah WORD /PBC value
4Ch WORD /PBS value
4Eh WORD /PFS value
50h WORD /PFT value
52h WORD /PWT value
54h WORD /KUC value
56h WORD /KST value
58h WORD /NVS value
5Ah WORD /NMS value
5Ch WORD /NDB value
5Eh WORD /MBI value
60h BYTE NetBIOS name number for machine name
61h BYTE NetBIOS name number for domain name
62h WORD NetBIOS sessions required for configuration
64h WORD NetBIOS commands required for configuration
66h WORD NetBIOS names required for configuration
68h 128 BYTEs NET START path (LANROOT)
E8h BYTE 00h
Bitfields for configuration flags:
Bit(s) Description (Table 2191)
0 /NVS nonzero
1 /NMS nonzero
2 /API
3 /HIM
4 /LIM
5 /ENC
6 /POP
7 /EMS
8 /RPL
9-12 reserved
13 RDR started
14 RCV started
15 User is currently logged on
--------N-2FB900-----------------------------
INT 2F - PC Network RECEIVER.COM - INSTALLATION CHECK
AX = B900h
Return: AL = state
00h if not installed
FFh if installed
--------N-2FB901-----------------------------
INT 2F - PC Network RECEIVER.COM - GET RECEIVER.COM INT 2F HANDLER ADDRESS
AX = B901h
Return: AL = ???
ES:BX -> RECEIVER.COM INT 2F handler
Desc: allows more efficient execution by letting the caller bypass any other
INT 2F handlers which have been added since RECEIVER.COM was
installed
--------N-2FB903-----------------------------
INT 2F - PC Network RECEIVER.COM - GET RECEIVER.COM POST ADDRESS
AX = B903h
Return: ES:BX -> POST handler
SeeAlso: AX=B803h,AX=B904h
--------N-2FB904-----------------------------
INT 2F - PC Network RECEIVER.COM - SET RECEIVER.COM POST ADDRESS
AX = B904h
ES:BX -> new POST handler
SeeAlso: AX=B804h,AX=B903h
--------N-2FB905-----------------------------
INT 2F - PC Network RECEIVER.COM - GET FILENAME
AX = B905h
DS:BX -> 128-byte buffer for filename 1
DS:DX -> 128-byte buffer for filename 2
Return: buffers filled from RECEIVER.COM internal buffers
Note: use of filenames is unknown, but one appears to be for storing messages
SeeAlso: AX=B906h
--------N-2FB906-----------------------------
INT 2F - PC Network RECEIVER.COM - SET FILENAME
AX = B906h
DS:BX -> 128-byte buffer for filename 1
DS:DX -> 128-byte buffer for filename 2
Return: RECEIVER.COM internal buffers filled from user buffers
Note: use of filenames is unknown, but one appears to be for storing messages
SeeAlso: AX=B905h
--------N-2FB908-----------------------------
INT 2F - PC Network RECEIVER.COM - UNLINK KEYBOARD HANDLER
AX = B908h
ES:BX -> INT 09 handler RECEIVER should call after it finishes INT 09
Note: this call replaces the address to which RECEIVER.COM chains on an
INT 09 without preserving the original value. This allows a prior
handler to unlink, but does not allow a new handler to be added
such that RECEIVER gets the INT 09 first.
SeeAlso: AX=B808h
--------V-2FBC00-----------------------------
INT 2F - Windows 3.0, DOS 5+ EGA.SYS - INSTALLATION CHECK
AX = BC00h
Return: AL = state
00h not installed, OK to install
01h not installed, not OK to install
FFh installed
BX = 5456h ("TV")
Range: AH=80h to AH=FFh, selected by commandline switch
SeeAlso: AX=BC06h"EGA",INT 10/AH=FAh"EGA"
--------s-2FBC00BX3F3F-----------------------
INT 2F - MediaVision MVSOUND.SYS - INSTALLATION CHECK
AX = BC00h
BX = 3F3Fh ('??')
CX = 0000h
DX = 0000h
Return: if installed, BX XOR CX XOR DX = 4D56h ('MV')
Program: MVSOUND.SYS is a driver for the MediaVision ProAudio Spectrum family
of sound boards; its primary programmer was Bryan Crane
SeeAlso: AX=BC01h"MVSOUND",AX=BC02h,AX=BC03h,AX=BC04h,AX=BC06h"MVSOUND"
--------s-2FBC01-----------------------------
INT 2F - MediaVision MVSOUND.SYS - GET VERSION
AX = BC01h
BX = magic value 6D20h ('m ')
CX = magic value 2076h (' v')
DX = magic value 2020h (' ')
Return: BX = ASCII major version (leading zeros significant)
CX = ASCII minor version (leading zeros significant)
SeeAlso: AX=BC00h/BX=3F3Fh
--------s-2FBC02-----------------------------
INT 2F - MediaVision MVSOUND.SYS - GET STATE TABLE POINTER
AX = BC02h
Return: BX:DX -> state table
SeeAlso: AX=BC00h/BX=3F3Fh,AX=BC03h
--------s-2FBC03-----------------------------
INT 2F - MediaVision MVSOUND.SYS - GET FUNCTION TABLE POINTER
AX = BC03h
Return: BX:DX -> function table
SeeAlso: AX=BC00h/BX=3F3Fh,AX=BC02h
--------s-2FBC04-----------------------------
INT 2F - MediaVision MVSOUND.SYS - GET DMA AND IRQ CHANNELS
AX = BC04h
Return: AX = 4D56h ('MV')
BL = DMA channel
CL = IRQ number
SeeAlso: AX=BC00h/BX=3F3Fh,AX=BC01h"MVSOUND"
--------V-2FBC06-----------------------------
INT 2F U - MS Windows 3.0, DOS 5+ EGA.SYS - GET VERSION INFO
AX = BC06h
Return: BX = 5456h ("TV")
CH = major version
CL = minor version
DL = revision
SeeAlso: AX=BC00h"EGA",INT 10/AH=FAh"EGA"
--------s-2FBC06-----------------------------
INT 2F - MediaVision MVSOUND.SYS - GET STATUS STRING
AX = BC06h
Return: AX = 4D56h ('MV')
DX:BX -> status string (first byte 0Ch if no status message to display)
SeeAlso: AX=BC00h/BX=3F3Fh,AX=BC01h"MVSOUND",AX=BC0Bh"MVSOUND"
--------s-2FBC0B-----------------------------
INT 2F - MediaVision MVSOUND.SYS - GET EXECUTABLE PATH
AX = BC0Bh
Return: BX:DX -> ASCIZ path for MVPROAS.EXE, 0000h:0000h if not available
SeeAlso: AX=BC00h/BX=3F3Fh
--------U-2FBE00-----------------------------
INT 2F - REDVIEW - INSTALLATION CHECK
AX = BE00h
Return: AL = FFh if installed
Program: REDVIEW is a public-domain TSR by Alexandr Novy and Petr Horak which
copies data sent to standard output to standard error when the
former has been redirected to a file, thus allowing the data to
be seen on the screen at the same time it is captured in a file
--------N-2FBF00-----------------------------
INT 2F - PC LAN PROGRAM REDIRIFS.EXE internal - INSTALLATION CHECK
AX = BF00h
Return: AL = FFh if installed
--------N-2FBF01-----------------------------
INT 2F U - PC LAN PROGRAM REDIRIFS.EXE internal - ???
AX = BF01h
???
Return: ???
--------N-2FBF80-----------------------------
INT 2F - 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
--------F-2FC0-------------------------------
INT 2F - MTEZ XpressFax Hardware TSR (CLASS2) - API
AH = C0h
AL = function code (01h to 15h)
Return: ???
SeeAlso: AX=C000h/BX=444Bh,AX=CB00h/BX=4D53h
--------N-2FC000-----------------------------
INT 2F - Novell ODI Link Support Layer (LSL.COM) - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
DX:BX -> FAR entry point (see #2192,#2193,#2194)
ES:SI -> signature string "LINKSUP$"
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: on return, ES = DX for LSL v1.10 and v2.05; LSL makes use of this in
its search for a previous installation
SeeAlso: AX=5100h,AX=C000h"NESL"
(Table 2192)
Call LSL function "Request MLID Registration" with:
BX = 0001h
ES:SI -> registration??? record (see #2196)
DS:DI -> buffer for LSL information block (see #2197)
Return: AX = completion code (0000h,8001h) (see #2195)
DS:DI buffer filled if successful
BX,CX corrupted
Note: see "Novell LAN Driver Developer's Guide, Volume III" for more details
(Table 2193)
Call LSL function "get support entry points" with:
BX = 0002h
ES:SI -> buffer for entry point record (see #2198)
Return: ES:SI buffer filled
(Table 2194)
Call LSL function "Request MLID API entry point" with:
BX = 0003h
Return: ES:SI -> MLID (Multiple Link Interface Driver) API entry point
(call with BX=function 00h-10h, not range-checked)
Note: LSL v1.10 and v2.05 execute BX=0003h for BX=0000h and any BX >= 0003h
(Table 2195)
Values for LSL completion code:
0000h successful
8001h out of resources
8002h bad parameter
8003h no more items
8004h item not present
8005h failed
8006h receive overflow
8007h canceled
8008h bad command
8009h duplicate entry
800Ah no such handler
800Bh no such driver
Format of LSL registration record:
Offset Size Description (Table 2196)
00h DWORD -> ??? FAR function (to be called with ES:SI -> ??? and
returning AX = completion code)
04h DWORD -> ???
08h DWORD -> ??? data (at least 3Eh bytes)
Format of LSL information block:
Offset Size Description (Table 2197)
00h DWORD -> ??? entry point (called with BX=function 00h-11h)
04h WORD ???
06h WORD ???
Note: due to a fencepost error, LSL v2.05 (distributed with Novell DOS 7)
will crash if the above entry point is called with BX=0012h
Format of entry point record:
Offset Size Description (Table 2198)
00h DWORD pointer to protocol support entry point in LSL (see #2199)
04h DWORD pointer to general support entry point in LSL (see #2200)
(Table 2199)
Call protocol support entry point with:
BX = function number
0000h ???
0001h ???
0002h ???
0003h "ScheduleAESEvent"
ES:SI -> AES ECB to be scheduled (see #2203)
Return: ES,SI preserved
0004h "CancelAESEvent"
ES:SI -> ECB to be cancelled (see #2203)
Return: ES,SI preserved
0005h "GetIntervalMarker"
Return: DX:AX = current interval marker in milliseconds
all other registers preserved
0006h "RegisterStack"
AX = logical board number
ES:SI -> bound stack info structure (see #2213)
Return: BX = assigned Stack ID if AX=0000h
0007h "DeRegisterStack"
AX = protocol stack's assigned Stack ID
0008h "RegisterDefaultStack"
AX = logical board number
ES:SI -> stack info structure (see #2214)
0009h "DeRegisterDefaultStack"
AX = logical board number
000Ah "RegisterPrescanStack"
AX = logical board number
ES:SI -> stack info structure (see #2214)
000Bh "DeRegisterPrescanStack"
AX = logical board number
000Ch "SendPacket"
ES:SI -> send ECB
Return: interrupts disabled
000Dh ???
000Eh ???
000Fh ???
0010h "GetStackIDFromName"
ES:SI -> counted NUL-terminated protocol name (max 15 chars)
Return: BX = Stack ID if AX=0000h
0011h "GetPIDFromStackIDBoard"
AX = Stack ID for protocol
CX = logical board number
ES:SI -> 6-byte buffer for protocol ID
0012h "GetMLIDControlEntry"
AX = logical board number
Return: ES:SI -> MLID control handler (see #2201) if AX=0000h
0013h "GetProtocolControlEntry"
AX = Stack ID or
FFFEh Prescan stack
CX = logical board number
FFFFh default protocol
CX = logical board number
Return: ES:SI -> protocol stack control entry point if AX=0000h
(see #2202)
0014h "GetLSLStatistics"
Return: AX = 0000h (successful)
ZF set
ES:SI -> LSL statistics table (see #2205)
0015h "BindStack"
AX = protocol stack's assigned Stack ID
CX = logical board number
0016h "UnbindStack"
AX = protocol stack's assigned Stack ID
CX = logical board number
0017h "AddProtocolID"
AX = frame type ID code
ES:SI -> 6-byte protocol ID
CX:DI -> counted NUL-terminated short protocol name (max 15 ch)
0018h "RelinquishControl"
Return: after LSL performs any necessary background processing
0019h "GetLSLConfiguration"
Return: AX = 0000h (successful)
ZF set
ES:SI -> LSL configuration table (see #2204)
001Ah "GetTickMarker"
Return: AX = number of 55ms ticks since LSL loaded
BX destroyed
Return: AX = completion code (see #2195)
ZF set if successful
SS:SP, DS, BP preserved; most other registers may be destroyed
(Table 2200)
Call general support entry point with:
BX = function number
0000h "Allocate Memory" (obsolete)
always returns AX=8008h (BAD_COMMAND)
0001h "Free Memory" (obsolete)
always returns AX=8008h (BAD_COMMAND)
0002h "Realloc Memory" (obsolete)
always returns AX=8008h (BAD_COMMAND)
0003h "Memory Statistics" (obsolete)
always returns AX=8008h (BAD_COMMAND)
0004h "Add Memory To Pool" (obsolete)
always returns AX=8008h (BAD_COMMAND)
0005h "AddGeneralService"
ES:SI -> General Service Control Block (see #2215)
0006h "RemoveGeneralService"
ES:SI -> General Service Control Block (see #2215)
0007h "GetNETcfgPath"
Return: AX = 0000h (successful)
DS:DX -> ASCIZ pathname for NET.CFG
0008h U ??? (in LSL 1.10)
Return: AX = 0000h
ES:SI -> ??? (a 22-byte data area)
000Ah "GetCriticalSectionStatus"
Return: BX = total outstanding calls to "StartCriticalSection"
000Bh "ServiceEvents"
interrupts disabled
Return: interrupts disabled
0010h "GetStackECB"
DS:DI -> Lookahead structure (see #2216)
interrupts disabled
Return: ES:SI -> ECB if successful (AX=0000h,ZF set)
interrupts disabled
8000h-FFFFh reserved for user general service providers
Return: AX = completion code (see #2195)
ZF set if successful
SS:SP, DS, BP preserved
(Table 2201)
Call MLID control handler with:
AX = logical board number
BX = function number
0000h "GetMLIDConfiguration"
Return: ES:SI -> MLID's configuration table if successful
(see #2208 for format)
0001h "GetMLIDStatistics"
Return: ES:SI -> MLID's statistics table if successful
(see #2208 for format)
0002h "AddMulticastAddress"
ES:SI -> 6-byte multicast address to add
0003h "DeleteMulticastAddress"
ES:SI -> 6-byte multicast address to delete
0005h "MLIDShutdown"
CX = type
0000h permanent (also deregisters from LSL)
other temporary (shutdown hardware only)
0006h "MLIDReset" reinitialize board / restart from temp shutdown
0007h "Create Connection" (obsolete?)
???
0008h "Delete Connection" (obsolete?)
???
0009h "SetLookAheadSize"
CX = requested lookahead size (00h-80h)
000Ah "PromiscuousChange"
CX = what to receive promiscuously
bit 0: MAC frames
bit 1: non-MAC frames
000Bh "RegisterReceiveMonitor"
CX = subfunction
0000h disable receive monitoring
else enable receive monitoring
ES:SI -> monitor receive routine
ES:DI -> monitor transmit routine
000Ch "Driver Poll" (obsolete?)
???
Return: AX = completion code (see #2195)
ZF set if successful
Note: not all boards/MLIDs support function 0010h; see bit 13 in the MLID
mode flags field of the MLID's configuration table
(Table 2202)
Call protocol stack control entry point with:
BX = function number
0000h "GetProtocolStackConfiguration"
Return: ES:SI -> protocol stack's configuration table
(see #2207)
0001h "GetProtocolStackStatistics"
Return: ES:SI -> protocol stack's statistics table (see #2206)
0002h "BindToMLID"
CX = board number to bind to
ES:SI -> implementation-dependant parameter string
0003h "UnBindFromMLID"
CX = board number from which protocol should unbind
ES:SI -> optional implementation-dependant parameter string
0004h "MLIDDeRegistered"
CX = board number that has de-registered from LSL
Return: AX = status
0000h successful
else implementation-dependant error codes
ZF set if successful
SS:SP, DS, BP preserved
Format of AES ECB:
Offset Size Description (Table 2203)
00h DWORD "AESLink" pointer used by LSL for list management
04h DWORD number of milliseconds to wait
08h DWORD "AESStatus" (is set to 00000000h when AES ESR is invoked)
0Ch DWORD -> function to be invoked when time expires
ES:SI will point to this structure on entry,
DS, BP, and SS:SP must be preserved.
SeeAlso: #2217
Format of LSL Configuration Table:
Offset Size Description (Table 2204)
00h BYTE major version of configuration table
01h BYTE minor version of configuration table (decimal, 0-99)
02h 8 BYTEs reserved
0Ah BYTE LSL major version (decimal)
0Bh BYTE LSL minor version (decimal, 0-99)
---LSL 1.0x ---
0Ch 14 BYTEs reserved
---LSL 1.10+ ---
0Ch WORD maximum number of boards which LSL can handle
0Eh WORD maximum number of protocol IDs which LSL can handle
10h 12 BYTEs reserved
Format of LSL Statistics Table:
Offset Size Description (Table 2205)
00h BYTE major version of statistics table format
01h BYTE minor version of statistics table format (decimal, 0-99)
02h WORD "GenericCounters" number of counters in static portion of
table
04h DWORD "ValidCountersMask" bit mask indicating which generic
counters are actually used. Bit 31 = TotalTxPackets, bit 30
is the next field, etc.
08h DWORD "TotalTxPackets" total SendPacket requests made
0Ch DWORD reserved
10h DWORD reserved
14h DWORD "AESEventsCount" number of completed AES events
18h DWORD "PostponedEvents" number of events postponed due to critical
sections inside the MLIDs
1Ch DWORD "CancelAESFailures" number of times CancelAESEvent failed
20h DWORD reserved
24h DWORD reserved
28h DWORD "TotalRxPackets" total number of GetStackECB requests
2Ch DWORD "UnclaimedPackets" total number of packets not consumed by a
protocol stack
30h WORD "NumberCustom" number of custom variables that follow
32h N DWORDs custom counters
N DWORDs -> CustomCounterStrN (one per custom counter)
var length-prepended and NULL terminated string for Counter 0
...
var length-prepended and NULL terminated string for Counter N-1
SeeAlso: #2206,#2212
Format of Protocol Stack Statistics Table:
Offset Size Description (Table 2206)
00h BYTE statistics table major version
01h BYTE statistics table minor version (decimal, 0-99)
02h WORD number of generic counters following
04h DWORD "ValidCountersMask" (bitmask, bit 31 is TotalTxPackets)
08h DWORD TotalTxPackets
0Ch DWORD TotalRxPackets
10h DWORD IgnoredRxPackets
14h WORD number of custom counters
16h N DWORDs custom counters
N DWORDs -> CustomCounterStrN (one per custom counter)
var length-prepended and NULL terminated string for Counter 0
...
var length-prepended and NULL terminated string for Counter N-1
SeeAlso: #2205,#2212
Format of Protocol Stack Configuration Table:
Offset Size Description (Table 2207)
00h BYTE configuration table major version
01h BYTE configuration table minor version (decimal, 0-99)
02h DWORD -> counted NUL-terminated long descriptive name for protocol
06h DWORD -> counted NUL-terminated short name for protocol (15 chars)
0Ah BYTE protocol stack major version
0Bh BYTE protocol stack minor version (decimal, 0-99)
0Ch 16 BYTEs reserved for future use
Format of MLID Configuration Table:
Offset Size Description (Table 2208)
00h 26 BYTEs signature 'HardwareDriverMLID ' (8 spaces on end)
1Ah BYTE configuration table major version
1Bh BYTE configuration table minor version (decimal, 0-99)
1Ch 6 BYTEs node address
22h WORD MLID mode flags (see #2209)
24h WORD board number
26h WORD board instance (if more than one of same board installed)
28h WORD maximum packet size
2Ah WORD BestDataSize
2Ch WORD WorstDataSize
2Eh DWORD -> counted NUL-terminated long name for NIC
32h DWORD -> counted NUL-terminated short name for NIC (8 chars max)
36h DWORD -> counted NUL-terminated Frame and Media type
3Ah WORD reserved (0000h)
3Ch WORD frame type ID
3Eh WORD TransportTime (milliseconds)
40h DWORD -> SourceRouteHandler for TokenRing. (Used by ROUTE.COM)
44h WORD lookahead size
46h WORD line speed (Mbps if high bit clear, else Kbps)
48h WORD QueueDepth
4Ah 6 BYTEs reserved (0)
50h BYTE driver major version
51h BYTE driver minor version (decimal, 0-99)
52h WORD bus/multicast flags (see #2210)
54h WORD send retries
56h DWORD ConfigTableLink
5Ah WORD MLID sharing flags (see #2211)
5Ch WORD slot number
5Eh WORD I/O address 1
60h WORD I/O range 1
62h WORD I/O address 2
64h WORD I/O range 2
66h DWORD memory address 1
6Ah WORD memory size 1
6Ch DWORD memory address 2
70h WORD memory size 2
72h BYTE interrupt line 1
73h BYTE interrupt line 2
74h BYTE DMA line 1
75h BYTE DMA line 2
Bitfields for MLID mode flags:
Bit(s) Description (Table 2209)
15 MLID supports Octet Reversal
14 node address is non-canonical
13 promiscuous mode is supported
12-8 reserved
7 LDataSize field in LookAhead structure supported
6 raw send supported
5 MLID needs to be polled by LSL
4 reserved (0)
3 multicasting is supported
2 not currently used by DOS ODI, set to 0.
1 network card uses DMA.
0 RealDriverBit, always set to 1.
Bitfields for bus/multicast flags:
Bit(s) Description (Table 2210)
10-9 specialized multicast support
00 = Group addressing is default for medium
01 = Invalid
10 = Filter group address in MLID.
11 = Adapter filters group address.
2 supports Micro Channel cards
1 supports ISA cards
0 supports EISA cards
Bitfields for MLID sharing flags:
Bit(s) Description (Table 2211)
8 NIC can share DMA2
7 NIC can share DMA1
6 NIC can share IRQ2
5 NIC can share IRQ1
4 NIC can share Memory2
3 NIC can share Memory1
2 NIC can share IO2
1 NIC can share IO1
0 MLID is currently shut down
Format of MLID Statistics Table:
Offset Size Description (Table 2212)
00h BYTE driver statistics table major version
01h BYTE driver statistics table minor version (decimal, 0-99)
02h WORD number of generic counters (typically 13)
04h DWORD "ValidCountersMask" (bit mask, bit 31 is TotalTxCount)
08h DWORD TotalTxCount
0Ch DWORD TotalRxCount
10h DWORD NoECBAvailableCount
14h DWORD TxTooBigCount
18h DWORD TxTooSmallCount
1Ch DWORD RxOverflowCount
20h DWORD RxTooBigCount
24h DWORD RxTooSmallCount
28h DWORD TxMiscCount
2Ch DWORD RxMiscCount
30h DWORD TxRetryCount
34h DWORD RxChecksumErrorCount
38h DWORD RxMismatchCount
3Ch WORD number of custom counters
3Eh N DWORDs custom counters
N DWORDs -> CustomCounterStrN (one per custom counter)
var length-prepended and NULL terminated string for Counter 0
...
var length-prepended and NULL terminated string for Counter N-1
SeeAlso: #2205,#2206
Format of bound stack info structure:
Offset Size Description (Table 2213)
00h DWORD -> protocol stack's short name (counted, NUL-terminated)
04h DWORD -> receive handler
08h DWORD -> control handler
Format of stack info structure:
Offset Size Description (Table 2214)
00h DWORD -> receive handler
04h DWORD -> control handler
Format of General Service Control Block:
Offset Size Description (Table 2215)
00h DWORD -> next GSCB (maintained internally by LSL)
04h DWORD -> entry point for general service handler
08h WORD command code for this general service (8000h-FFFFh)
Note: the control block must not be altered or deallocated until the general
service is removed
Format of Lookahead structure:
Offset Size Description (Table 2216)
00h DWORD -> Media header
04h DWORD -> lookahead buffer
08h WORD length of lookahead buffer
0Ah 6 BYTEs protocol ID
10h WORD logical board number
12h WORD lookahead size
Format of ODI ECB:
Offset Size Description (Table 2217)
00h DWORD link to next ECB
04h DWORD link to previous ECB
08h WORD general status
0000h received successfully
8006h packet overflow
8007h reception aborted (data not valid)
0Ah DWORD -> event service routine or RETF (never 0000h:0000h)(see #2218)
0Eh WORD protocol stack identifier
10h 6 BYTEs protocol ID (sending only)
16h WORD MLID board number (sending only)
18h 6 BYTEs MAC destination address
1Eh 4 BYTEs driver workspace
22h 4 BYTEs protocol workspace
26h WORD total length of sent buffer
28h WORD fragment count
2Ah 2 WORDs segment,offset of first fragment buffer
2Eh WORD length of first fragment buffer
...
SeeAlso: #2203
(Table 2218)
Values event service routine is called with:
ES:SI -> associated ODI ECB (see #2217)
interrupts disabled
Return: DS,BP,SS,SP preserved
interrupt disabled
Notes: the service routine may invoke any IPX/ODI function except CloseSocket
it is safe to send a packet and wait for completion if enough stack
space is available
--------N-2FC000-----------------------------
INT 2F - Novell NetWare Event Service Layer (NESL) 1.0 - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
DX:BX -> FAR entry point (see #2219,#2220,#2221,#2222,#2223,#2224)
ES:SI -> signature string "NESL_EVENTS"
Program: NESL is a generic interface for event handling in ODI drivers and
other NetWare-oriented modules. Primarily intended to support
power management and "hot swapping" of PCMCIA cards, but it is not
limited to this.
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"Link Support Layer",AX=C000h"NETWARN"
(Table 2219)
Call NESL function GetNESLConfigPointer with:
BX = 0000h
Return: AX = completion code (0000h,8008h) (see #2225)
ES:SI -> NESL configuration table if successful (see #2226)
BP,DS,STACK preserved
Desc: Obtain a pointer to the NESL Configuration Table
SeeAlso: #2220,#2223
(Table 2220)
Call NESL function RegisterEventProducer with:
BX = 0001h
ES:SI -> Producer Event Control Block (PECB) (see #2227)
Return: AX = completion code (0000h, 8005h, 8008h) (see #2225)
ES:SI -> still points to PECB
BP,DS,STACK preserved
Desc: Allows a module to register as a producer of a given event class
Note: PECB_ClassName and PECB_Flags must be filled in on entry
SeeAlso: #2093,#2221,#2222,#2223
(Table 2221)
Call NESL function DeRegisterEventProducer with:
BX = 0002h
ES:SI -> PECB previously passed to RegisterEventProducer (see #2227)
Return: AX = completion code (0000h, 8002h, 8008h) (see #2225)
ES:SI -> still points to PECB
BP,DS,STACK preserved
Desc: Allows a module to de-register as a producer of a given event class
SeeAlso: #2220,#2224
(Table 2222)
Call NESL function EventNotification with:
BX = 0003h
ES:SI -> PECB previously registered (see #2227)
Return: AX = completion code (0h, 8005h, 8008h) (see #2225)
ES:SI -> still points to PECB
BP,DS,STACK preserved
Desc: Allows a module to signal that an event has just occurred in a given
event class.
Notes: Once called, NESL will generate corresponding callouts for this
event, as described in Table #2229.
on entry, the PECB_DataPtr must point at an Event Parameter Block (EPB)
(see #2230) filled in to match the desired event
SeeAlso: #2220
(Table 2223)
Call NESL function RegisterEventConsumer with:
BX = 0004h
ES:SI -> Consumer Event Control Block (CECB) (see #2228)
Return: AX = completion code (0h, 8005h, 8008h) (see #2225)
ES:SI -> still points to CECB
BP,DS,STACK preserved
Desc: Allows a module to register as a consumer of a given event class
Note: on entry, the CECB_ClassName, CECB_NotifProc and CECB_OSILevel must be
filled in.
SeeAlso: #2220,#2224
(Table 2224)
Call NESL function DeRegisterEventConsumer with:
BX = 0005h
ES:SI -> CECB previously passed to RegisterEventConsumer (see #2228)
Return: AX = completion code (0h, 8002h, 8008h) (see #2225)
ES:SI -> still points to CECB
BP,DS,STACK preserved
Desc: Allows a module to de-register as a consumer of a given event class
SeeAlso: #2221,#2223
(Table 2225)
Values for NESL Error code:
0000h Successful
8002h Bad Parameter
8005h Fail
8008h Bad Command
Format of NESL Configuration Table:
Offset Size Description (Table 2226)
00h WORD NESL_Cfg_MajVer Major Version of this table (=1)
02h WORD NESL_Cfg_MinVer Minor Version of this table (=0)
04h DWORD NESL_Cfg_ModLName -> ASCIZ long name of NESL module
(typically -> "NetWare Event Service Layer for 16-Bit DOS")
08h DWORD NESL_Cfg_ModSName -> ASCIZ short name of NESL module
(typically -> "NESL")
0Ch WORD NESL_Cfg_ModMajVer Major Version of NESL itself (=1)
0Eh WORD NESL_Cfg_ModMinVer Minor Version of NESL itself (=0)
Format of NESL Producer Event Control Block (PECB):
Offset Size Description (Table 2227)
00h WORD PECB_MajVer Major Version of this structure (=1)
02h WORD PECB_MinVer Minor Version of this structure (=0)
04h DWORD PECB_NextProducer -> next PECB. NULL if last.
08h DWORD PECB_ClassName -> ASCIZ string identifying event
class (see #2231)
0Ch DWORD PECB_ConsumerList -> list of consumers for this event class
10h DWORD PECB_DataPtr -> points to additional data during events
14h DWORD PECB_Flags
Bit 0 =0 consumers should be called "top down" for this
event class. (OSI level 7 down to OSI level 1)
=1 consumers should be called "bottom up"
Bits 1-31 Reserved =0
18h 8 BYTEs PECB_Reserved (all zeros)
Note: Although the event producer provides the memory for the PECB, the
NESL module controls this memory until the event class is
de-registered.
While owned by NESL, this structure should be treated as read-only,
except for the PECB_DataPtr field.
Format of NESL Consumer Event Control Block (CECB):
Offset Size Description (Table 2228)
00h WORD CECB_MajVer Major Version of this structure (=1)
02h WORD CECB_MinVer Minor Version of this structure (=0)
04h DWORD CECB_NextConsumer -> next CECB. NULL if last.
08h DWORD CECB_ClassName -> ASCIZ string identifying event
class (see #2231)
0Ch DWORD CECB_NotifProc -> FAR CALL event handler (see #2229)
10h WORD CECB_OSILevel
Bits 4-7 = OSI Layer of this module (1 through 7)
Bits 0-3 = relative ordering with other modules on same layer
13h 14 BYTEs CECB_Reserved (all zeros)
Note: Although the event consumer provides the memory for the CECB, the
NESL module controls this memory until the consumer is de-registered.
While owned by NESL, this structure should be treated as read-only,
(Table 2229)
Values NESL Consumer Notification Procedure is called with:
ES:SI -> Event Parameter Block (EPB) (see #2230)
Return: AX = completion code (0000h, 8005h) (see #2225)
ES:SI -> still points to EPB
Desc: Called by NESL to notify the consumer when an event has occurred in
an event class for which it has registered.
SeeAlso: #2228
Format of NESL Event Parameter Block (EPB):
Offset Size Description (Table 2230)
00h WORD EPB_MajVer Major Version of this structure (=1)
02h WORD EPB_MinVer Minor Version of this structure (=0)
04h DWORD EPB_ClassName -> ASCIZ string identifying event class
(see #2231)
08h DWORD EPB_EventName -> ASCIZ string identifying event within
class (see #2232)
0Ch DWORD EPB_ModuleName -> ASCIZ string identifying module
producing event
10h DWORD EPB_DataPtr0 -> event-defined data or NULL if not used
14h DWORD EPB_DataPtr1 -> event-defined data or NULL if not used
18h 8 BYTEs EPB_Reserved (all zeros)
(Table 2231)
Values for NESL Event Class Names:
Event Class Description
------------------- -----------------------------------------
Service Suspend Suspension of a service. Called top-down.
Service Resume Resumption/availability of a service. Called bottom-up.
Service/Status Change Change in status or level of service. Called top-down.
Suspend Request Request to suspend a service. Called bottom-up.
Note: Contact Novell Labs to register new event classes.
(Table 2232)
Values for NESL Event Names:
Event Name Class Description
-------------------------- ------------- ---------------------------
MLID Cable Disconnect Service Suspend Cable disconnected from NIC
MLID Card Removal Service Suspend PCMCIA card removed
MLID Hardware Failure Service Suspend Serious hardware
failure in NIC
MLID Not In Range Service Suspend Wireless access point
is out of range
MLID Shutdown Service Suspend MLID was shut down
MLID Media Access Denied Service Suspend Access to physical
medium unsuccessful
MLID Cable Reconnect Service Resume Cable re-connected to NIC
MLID Card Insertion Complete Service Resume PCMCIA card inserted
MLID In Range Service Resume Wireless access point
in range
MLID Reset Service Resume MLID was just reset
MLID Access Point Change Serv/Status Change Station has moved to
new access point
MLID Speed Change Serv/Status Change Change in communic. speed
Note: Contact Novell Labs to register new event names.
For all predefined events above, EPB_DataPtr0 (see #2230) points
to the MLID Configuration table (see AX=C000h"ODI") for the
affected MLID.
--------N-2FC000-----------------------------
INT 2F - Novell NetWare Connect NETWARN - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
SI = segment of resident portion
Program: NETWARN is a utility supplied with NetWare Connect to warn a
remote dialup user when programs are about to be loaded slowly over
the modem link.
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: on return, verify that it is NETWARN responding by examining signature
at in NETWARN's data table in the resident segment (see #2233)
SeeAlso: AX=C000h"ODI",AX=C000h"NESL"
Format of NETWARN Configuration structure:
Offset Size Description (Table 2233)
103h 7 BYTEs signature string "NETWARN"
10Ah BYTE major version in ASCII (="1")
10Bh BYTE minor version in ASCII (="0")
10Ch DWORD minimum size of EXE cared about in bytes (/S=xxxx)
110h WORD same value in kilobytes (see 0113h, bit 4 below)
112h BYTE multiplex code (AH value) actually being used
113h WORD options (see #2234)
115h DWORD INT 21h vector before NETWARN loaded
119h DWORD INT 2Fh vector before NETWARN loaded
11Dh 16 BYTEs ASCIIZ local name of last device which was checked
12Dh 128 BYTEs ASCIIZ remote name of last device which was checked
Note: the specified offsets are from the start of the resident segment
Bitfields for NETWARN options:
Bit(s) Description (Table 2234)
0 ??? (=0)
1 /U (Unload) selected (never in resident)
2 /E (Enabled) Will trap & check EXEC's
3 /D (Disabled) No EXEC checking done
4 /S (Size) was set (see 010Ch, 0110h above)
5 /P (Path shown)
6 /H or /? (Help) (never in resident)
SeeAlso: #2233
--------f-2FC000-----------------------------
INT 2F - FN32 32 character filename utilities - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
ES:DI -> signature string "FN32 32CHAR TSR"
Program: FN32 is a TSR which supports 32 character filenames under PC/MS-DOS
Note: the TSR intercepts INT 21 calls and performs filename substitution by
managing dictionary files in each directory which contains long
filenames
--------M-2FC000-----------------------------
INT 2F - QMR - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
ES:DI -> signature string "QMR1!"
Program: QMR (Cove Software, Quick Mouse Reset) monitors the mouse
service interrupt (int 33h) and substitutes a fast software
reset (mouse fn 21h) for the slow hardware reset (mouse fn 0).
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C001h"QMR",AX=C002h"QMR",AX=C003h"QMR"
--------V-2FC000-----------------------------
INT 2F - VGAsave v1.93 - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
BX = segment of resident code
Program: VGAsave is a freeware VGA-specific, mouse-aware screenblanker by Bill
Javurek
Range: AH=C0h to AH=FFh, selected by scanning for a free multiplex number
Note: the transient portion of VGAsave compares the first 38 bytes of the
resident code (addressed through BX) against its own copy of the
resident code to complete the installation check
SeeAlso: INT 14/AX=AA01h,INT 2F/AH=93h
Index: screen saver;VGAsave
--------V-2FC000-----------------------------
INT 2F - AD-DOS - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
BX = 4144h ('AD')
CX = 2D44h ('-D')
DX = 4F53h ('OS')
Program: AD-DOS is the DOS version of the After Dark screen blanker for
MS Windows
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C001h,AX=C003h,AX=C005h,AX=C007h,AX=C009h,AX=C020h,INT 14/AX=AA01h
Index: screen saver;AD-DOS
--------U-2FC000-----------------------------
INT 2F U - WANG_ER.COM - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
ES = segment of resident code
Program: WANG_ER is a TSR from Compaq which permits Compaq systems equipped
with 3-mode floppy drives to read Wang document diskettes
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: The installation check is completed by comparing the resident code
with the copy in the transient program
--------i-2FC000-----------------------------
INT 2F O - ASPIHOOK.SYS - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if multiplex number in use
ES:DI -> ASCIZ signature "ASPIHOOK" if ASPIHOOK.SYS installed
Program: ASPIHOOK is a device driver for monitoring SCSI activity through an
ASPI host manager; it is part of the Personal Measure system
activity monitor from Spirit of Performance, Inc.
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"PMEASURE"
--------i-2FC000-----------------------------
INT 2F - PMEASURE.EXE - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if multiplex number in use
ES:DI -> ASCIZ signature "PMEASURE.EXE" if PMEASURE.EXE installed
Program: PMEASURE.EXE is a TSR for monitoring system hardware activity which
is part of the Personal Measure system activity monitor from Spirit
of Performance, Inc.
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: If a Personal Measure Hook Module, such as ASPIHOOK.SYS, is already
installed, PMEASURE.EXE uses the next highest free multiplex number.
SeeAlso: AX=C000h"ASPIHOOK",AX=C000h"PERSONAL MEASURE"
--------i-2FC000-----------------------------
INT 2F - PERSONAL MEASURE - HOOK MODULE INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
ES:DI -> signature string "PMEASUREHOOK"
AX = C000 if not installed, per mux id conventions
DH = major release number (binary)
DL = minor release number (binary)
Program: The Personal Measure system activity monitor from Spirit of
Performance, Inc. uses an extensible series of modules to hook
into various operating system interfaces and monitor system calls.
Current hook modules are ASPIHOOK.SYS for ASPI device activity
and CDRHOOK.SYS for non-ASPI CD-ROM activity. All hook modules
share the same mux id.
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"PMEASURE.EXE",AX=C001h"PERSONAL MEASURE"
--------c-2FC000-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
SI = signature value 20D6h
DI = signature value 8761h
ES:BX -> configuration table (see #2235)
CX = ??? (0300h)
DX = ??? (0020h)
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
Range: AH=C0h to AH=FFh, selected by commandline switch
SeeAlso: AX=0100h/SI=20D6h,AX=C001h"PCACHE"
Format of PrintCache configuration table:
Offset Size Description (Table 2235)
00h 26 BYTEs ASCIZ signature string "TORQ Configuration Table: "
1Ah 2 BYTEs ???
1Ch DWORD -> data table (see #2236)
20h 4 BYTEs ASCIZ version string ("3.1" for v3.1)
24h 5 BYTEs ???
29h 12 BYTEs ASCIZ version date string ("Aug 31 1993" for v3.1)
35h WORD buffered port type (01h = LPT, 02h = COM)
37h WORD buffered port BIOS port number
39h 5 BYTEs ASCIZ buffered port name ("LPTn" or "COMn")
3Eh WORD physical port type (01h = LPT, 02h = COM)
40h WORD physical port BIOS port number
42h 5 BYTEs ASCIZ physical port name ("LPTn" or "COMn")
47h BYTE port driver IRQ
48h 21 BYTEs ???
5Dh WORD buffer size in K
5Fh 27 BYTEs ???
7Ah BYTE popup hotkey shift states (see #0477 at INT 16/AH=02h)
7Bh BYTE popup hotkey scan code (see #0005 at INT 09h"IRQ1")
7Ch 4 BYTEs ???
80h 20 BYTEs ASCIZ printer type name
???
Format of PrintCache data table:
Offset Size Description (Table 2236)
00h 2 BYTEs ???
02h DWORD -> ??? entry point
???
--------U-2FC000-----------------------------
INT 2F - Frank Kintrup TSR Utilities - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
BX = program ID (see #2237)
CX = 464Bh (signature "FK")
DX = revision number (DH = major, DL = minor)
ES = resident segment of TSR
Range: AH=C0h to AH=FFh, selected by searching for a free multiplex number
SeeAlso: AX=C001h"Kintrup",AX=C002h"Kintrup"
(Table 2237)
Values for Frank Kintrup TSR program ID:
4153h "AS" ASCII.COM ASCII table with paste function
434Ch "CL" CLOCK.COM clock with date/time display and alarm
5043h "PC" PCALC.COM programmer's calculator with paste function
5343h "SC" SCRSAVE.COM screen saver with mouse support and hotkey
5544h "UD" UNDEL.COM undelete program like SMARTCAN or DPROTECT
--------K-2FC000-----------------------------
INT 2F U - HP 100LX/200LX - PUSHKEYS - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if possibly installed
Range: AH=C0h to AH=FFh, selected by scanning for signature with AL=AEh
SeeAlso: AX=C001h"HP 100LX",AX=C0AEh"HP 100LX",AX=C0AFh"HP 100LX"
--------V-2FC000-----------------------------
INT 2F - DIMWIT - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if installed
ES:DI -> signature string "DIMDOS" or "DIMWIN"
Program: DIMWIT is a freeware Windows-aware screen blanker by Larry Board
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"AD-DOS",AX=C001h"DIMWIT"
Index: screen saver;DIMWIT
--------F-2FC000BX444B-----------------------
INT 2F - MTEZ XpressFax Hardware TSR (CLASS2) - INSTALLATION CHECK
AX = C000h
BX = 444Bh ('DK')
CX = 4A4Eh ('AN')
Return: AL = status
00h not installed, OK to install
FFh installed
BX = 646Bh ('dk')
CX = 6A6Eh ('an')
Range: AH=C0h to AH=FFh, selected automatically
SeeAlso: AH=C0h"MTEZ"
--------V-2FC000-----------------------------
INT 2F U - TSENGP.COM - INSTALLATION CHECK
AX = C000h
Return: AL = status
00h not installed, OK to install
FFh installed
DS = segment of resident code
Program: TSENGP.COM is a TSR supplied by Compaq to fix an incompatibility
between some applications and Tseng ET4000-based video adapters
Range: AH=C0h to AH=FFh, selected automatically
Note: the installation check is completed by comparing the first eleven
bytes at DS:005Fh against the TSR's code (80h FCh 06h 74h 0Ah
80h FCh 07h 74h 05h EAh)
--------N-2FC000-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - INSTALLATION CHECK
AX = C000h
Return: AL = FFh if one of the components is installed
CX:BX -> signature within LLRA component:
"TSI_LapLinkCore" for LLRA1.EXE
"TSI_Blackbird" for LLRA2.EXE
"TSI_Redirector" for LLRA3.EXE
"TSI_Compression" for LLRA4.EXE
DL = major version number
DH = minor version number
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: LapLink components are installed in the order listed above, but not
necessarily all four; each gets its own multiplex number (default
C0h-C3h)
SeeAlso: AX=C002h"LapLink",AX=C205h"LapLink",AX=C2F0h"LapLink"
SeeAlso: AX=C2F1h"LapLink",AX=C301h"LapLink",AX=C3F0h"LapLink"
SeeAlso: AX=C3F1h"LapLink"
--------M-2FC001-----------------------------
INT 2F - QMR - REQUEST HARDWARE RESET
AX = C001h
Return: ES = QMR code segment
AL destroyed
Desc: this function is used to force a full mouse reset when QMR is installed
SeeAlso: AX=C000h"QMR",AX=C002h"QMR"
--------V-2FC001-----------------------------
INT 2F - DIMWIT - GET CONFIGURATION DATA
AX = C001h
Return: ES:DI -> TSR configuration data (see #2238)
Program: DIMWIT is a freeware Windows-aware screen blanker by Larry Board
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"DIMWIT",AX=C001h"AD-DOS"
Index: screen saver;DIMWIT
Format of DIMWIT TSR configuration data:
Offset Size Description (Table 2238)
00h WORD blanking delay in clock ticks
02h BYTE instant-blanking hotkey scan code (see #0005)
Ctrl and Alt must also be pressed
--------V-2FC001ES0000-----------------------
INT 2F - AD-DOS - GET RESIDENT CODE SEGMENT
AX = C001h
ES = 0000h
Return: AL = 00h if successful
ES = AD-DOS TSR Code Segment
SeeAlso: AX=C000h"AD-DOS",AX=C001h"DIMWIT"
Index: screen saver;AD-DOS
--------c-2FC001-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - GET ENTRY POINTS
AX = C001h
Return: AL = FFh if installed
ES:BX -> ???
ES:DX -> ???
ES:SI -> ???
ES:DI -> ??? (equivalent to AX=C002h)
SeeAlso: AX=C000h"PCACHE",AX=C002h"PCACHE"
--------U-2FC001-----------------------------
INT 2F - Frank Kintrup TSR Utilities - CLOCK - DISABLE DISPLAY UPDATE
AX = C001h
Range: AH=C0h to AH=FFh, selected by searching for a free multiplex number
SeeAlso: AX=C000h"Kintrup",AX=C002h"Kintrup"
--------K-2FC001CX03FB-----------------------
INT 2F U - HP 100LX/200LX - PUSHKEYS - INTERNAL - UNINSTALL
AX = C001h
CX = 03FBh return address to continue uninstall if possible
Return: program uninstalled
Range: AH=C0h to AH=FFh, selected by scanning for signature with AL=AEh
SeeAlso: AX=C000h"HP 100LX",AX=C0AEh"HP 100LX",AX=C0AFh"HP 100LX"
--------i-2FC001-----------------------------
INT 2F - PERSONAL MEASURE - PASS PARAMETERS TO HOOK MODULE(S)
AX = C001h
DX = segment of PMEASURE.EXE or 0000h
BX = offset in PMEASURE.EXE or 0000h
CX = offset in PMEASURE.EXE or 0000h
Return: None
Program: PMEASURE.EXE is a TSR for monitoring system hardware activity which
is part of the Personal Measure system activity monitor from Spirit
of Performance, Inc. PMEASURE uses this call to inform its hook
modules whether or not it is running and to pass information about
shared data and procedures.
Warning: This information documents a function that is private to Personal
Measure and is provided as information only. It should NOT be called
by any software other than Personal Measure.
SeeAlso: AX=C000h"PERSONAL MEASURE HOOK MODULE"
--------V-2FC002-----------------------------
INT 2F - AD-DOS - CHECK FOR NEW INPUT
AX = C002h
Return: AL = 00h if successful
BX = status
0000h no input since last check
0001h new input available
Note: this call also resets the new-input flag
SeeAlso: AX=C000h"AD-DOS",AX=C004h
Index: screen saver;AD-DOS
--------M-2FC002-----------------------------
INT 2F - QMR - DISABLE QMR
AX = C002h
Return: ES = QMR code segment
AL destroyed
Desc: this call temporarily disables QMR
SeeAlso: AX=C000h"QMR",AX=C003h"QMR"
--------c-2FC002-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - GET BUFFER SIZE
AX = C002h
Return: AX = ??? in K
BX = size of print buffer in K
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
SeeAlso: AX=C000h"PCACHE"
--------U-2FC002-----------------------------
INT 2F - Frank Kintrup TSR Utilities - CLOCK - ENABLE DISPLAY UPDATE
AX = C002h
Range: AH=C0h to AH=FFh, selected by searching for a free multiplex number
SeeAlso: AX=C000h"Kintrup",AX=C002h"Kintrup"
--------N-2FC002-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Core - ???
AX = C002h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C2F0h"LapLink"
SeeAlso: AX=C2F1h"LapLink",AX=C301h"LapLink"
--------V-2FC003-----------------------------
INT 2F - AD-DOS - SET MINUTES TO WAIT
AX = C003h
BX = minutes to wait before blanking screen
Return: AL = 00h if successful
Program: AD-DOS is the DOS version of the After Dark screen blanker for
MS Windows
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: this call also resets the delay timer
SeeAlso: AX=C000h"AD-DOS",AX=C004h
Index: screen saver;AD-DOS
--------M-2FC003-----------------------------
INT 2F - QMR - ENABLE QMR
AX = C003h
Return: ES = QMR code segment
AL destroyed
Desc: this call enables QMR after it has been disabled
SeeAlso: AX=C000h"QMR",AX=C002h"QMR"
--------c-2FC003-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - SET ??? FLAG
AX = C003h
Return: BX destroyed
SeeAlso: AX=C004h"PCACHE"
--------V-2FC004-----------------------------
INT 2F - AD-DOS - GET MINUTES TO WAIT
AX = C004h
Return: AL = 00h if successful
BX = minutes to wait before blanking screen
SeeAlso: AX=C000h"AD-DOS",AX=C003h"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC004-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - CLEAR ??? FLAG
AX = C004h
Return: BX destroyed
SeeAlso: AX=C003h"PCACHE"
--------V-2FC005-----------------------------
INT 2F - AD-DOS - SET BLANKER STATUS
AX = C005h
BX = new state (0000h inactive, 0001h active) (default 0001h)
Return: AL = 00h if successful
SeeAlso: AX=C006h"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC005-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C005h
???
Return: BX destroyed
???
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
Range: AH=C0h to AH=FFh, selected by commandline switch
SeeAlso: AX=C000h"PCACHE"
--------V-2FC006-----------------------------
INT 2F - AD-DOS - GET BLANKER STATUS
AX = C006h
Return: AL = 00h if successful
BX = current state of screen blanker (0000h inactive, 0001h active)
Program: AD-DOS is the DOS version of the After Dark screen blanker for
MS Windows
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"AD-DOS",AX=C005h"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC006-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C006h
???
Return: BX destroyed
???
Note: this function appears to be identical to AX=C007h
SeeAlso: AX=C000h"PCACHE",AX=C007h"PCACHE"
--------V-2FC007-----------------------------
INT 2F - AD-DOS - SET HOT KEY
AX = C007h
BX = hot key
CL = hot key shift status
Return: AL = 00h if successful
SeeAlso: AX=C008h"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC007-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C007h
???
Return: BX destroyed
???
Note: this function appears to be identical to AX=C006h
SeeAlso: AX=C000h"PCACHE",AX=C006h"PCACHE"
--------V-2FC008-----------------------------
INT 2F - AD-DOS - GET CURRENT HOT KEY
AX = C008h
Return: AX = status
0000h successful
BX = Hot Key
CL = Hot Key Shift Status
0008h otherwise
SeeAlso: AX=C000h"AD-DOS",AX=C007h"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC008-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - CLEAR ??? FLAG
AX = C008h
Return: BX destroyed
SeeAlso: AX=C000h"PCACHE",AX=C009h"PCACHE"
--------V-2FC009-----------------------------
INT 2F - AD-DOS - UNBLANK MONITOR
AX = C009h
Return: AL = 00h if successful
Program: AD-DOS is the DOS version of the After Dark screen blanker for
MS Windows
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: this function works by simulating keyboard activity
Index: screen saver;AD-DOS
--------c-2FC009-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - SET ??? FLAG
AX = C009h
Return: BX destroyed
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
Range: AH=C0h to AH=FFh, selected by commandline switch
SeeAlso: AX=C000h"PCACHE",AX=C008h"PCACHE"
--------V-2FC00A-----------------------------
INT 2F - AD-DOS - ???
AX = C00Ah
Return: AX = status
0000h successful
BH = ??
BL = ??
000Ah failed
Index: screen saver;AD-DOS
--------c-2FC00A-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C00Ah
???
Return: AH = bit flags
bit 5: ???
AL = bit flags
bit 4: ???
bit 3: ???
BX destroyed
???
SeeAlso: AX=C000h"PCACHE"
--------V-2FC00B-----------------------------
INT 2F - AD-DOS - ???
AX = C00Bh
Return: AX = status
0000h successful
000Bh failed
Index: screen saver;AD-DOS
--------c-2FC00B-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - NOP
AX = C00Bh
Return: BX destroyed
SeeAlso: AX=C000h"PCACHE"
--------V-2FC00C-----------------------------
INT 2F - AD-DOS - SET ??? INTERNAL FLAG TO 01h
AX = C00Ch
Return: AX = status
0000h successful
000Ch failed
Program: AD-DOS is the DOS version of the After Dark screen blanker for
MS Windows
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Index: screen saver;AD-DOS
--------c-2FC00C-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - GET ???
AX = C00Ch
Return: AX = ??? (0000h)
BX = ??? (0000h)
CX = ??? (0100h)
DL = ???
DH = ???
SeeAlso: AX=C000h"PCACHE"
--------c-2FC00D-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - SET ???
AX = C00Dh
DL = ???
Return: BX destroyed
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
Range: AH=C0h to AH=FFh, selected by commandline switch
SeeAlso: AX=C000h"PCACHE"
--------V-2FC00E-----------------------------
INT 2F - AD-DOS - SET PASSWORD STATUS
AX = C00Eh
BX = new state (0000h disabled, 0001h enabled)
Return: ???
SeeAlso: AX=C000h"AD-DOS",AX=C00Fh"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC00E-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - INSTALL ???
AX = C00Eh
ES:DX -> ???
Return: BX destroyed
Note: ES:DX is stored internally if the variable is currently 0000h:0000h,
but ignored if already set; a counter is incremented
SeeAlso: AX=C000h"PCACHE",AX=C00Fh"PCACHE"
--------V-2FC00F-----------------------------
INT 2F - AD-DOS - GET PASSWORD STATUS
AX = C00Fh
Return: BX = current state (0000h disabled, 0001h enabled)
SeeAlso: AX=C00Eh"AD-DOS"
Index: screen saver;AD-DOS
--------c-2FC00F-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - REMOVE ???
AX = C00Fh
Return: BX destroyed
Note: this function decrements the counter used by AX=C00Eh, and clears the
internal pointer variable to 0000h:0000h when it reaches zero
SeeAlso: AX=C000h"PCACHE",AX=C00Eh"PCACHE"
--------c-2FC010-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - GET ???
AX = C010h
CX = index of ??? table (00h-02h, others treated as 00h)
SI = offset into data table
Return: AL = byte at specified offset into table
BX destroyed
SeeAlso: AX=C000h"PCACHE"
--------c-2FC011-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - GET ???
AX = C011h
Return: AX = ??? (0007h)
BX = ??? (0001h)
CH = ???
CL = ???
SeeAlso: AX=C000h"PCACHE"
--------c-2FC012-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - GET ???
AX = C012h
Return: AX = ???
BX = ???
CX = ???
DX = ???
SeeAlso: AX=C000h"PCACHE"
--------c-2FC013-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C013h
???
Return: BX destroyed
???
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
Range: AH=C0h to AH=FFh, selected by commandline switch
SeeAlso: AX=C000h"PCACHE"
--------c-2FC014-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C014h
???
Return: BX destroyed
???
SeeAlso: AX=C000h"PCACHE"
--------c-2FC015-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C015h
???
Return: BX destroyed
???
SeeAlso: AX=C000h"PCACHE"
--------c-2FC016-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - INCREMENT ???
AX = C016h
Return: BX destroyed
SeeAlso: AX=C000h"PCACHE",AX=C017h"PCACHE"
--------c-2FC017-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - DECREMENT ???
AX = C017h
Return: BX destroyed
SeeAlso: AX=C000h"PCACHE",AX=C016h"PCACH"
--------c-2FC018-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C018h
???
Return: BX destroyed
???
Note: the first instruction of this function is an indirect jump which points
at a RET by default
SeeAlso: AX=C000h"PCACHE",AX=C019h"PCACHE"
--------c-2FC019-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C019h
???
Return: BX destroyed
???
Note: the first instruction of this function is an indirect jump which points
at a RET by default
SeeAlso: AX=C000h"PCACHE",AX=C018h"PCACHE"
--------c-2FC01A-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - CLEAR ??? FLAG
AX = C01Ah
Return: BX destroyed
SeeAlso: AX=C000h"PCACHE",AX=C01Bh"PCACHE"
--------c-2FC01B-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - SET ??? FLAG
AX = C01Bh
Return: BX destroyed
SeeAlso: AX=C000h"PCACHE",AX=C01Ah"PCACHE"
--------c-2FC01C-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - ???
AX = C01Ch
???
Return: AX = ???
BX destroyed
SeeAlso: AX=C000h"PCACHE"
--------c-2FC01D-----------------------------
INT 2F U - PrintCache v3.1 PCACHE.EXE - NOP
AX = C01Dh to C01Fh
Return: BX destroyed
Program: PCACHE is the resident print spooler portion of PrintCache by
LaserTools; it may use either memory or disk space to spool output
Range: AH=C0h to AH=FFh, selected by commandline switch
SeeAlso: AX=C000h"PCACHE"
--------V-2FC020-----------------------------
INT 2F - AD-DOS - GET AND RESET VxD API STATUS
AX = C020h
Return: AL = 00h if successful
BX = VxD API Status
0000h no error
0001h error
0100h neither Windows 3.X enhanced mode nor Windows/386 2.x
is running
0200h VM API entry point not found (VxD not installed)
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
Note: this call resets the VxD API Status to zero
SeeAlso: AX=1602h,AX=1607h
Index: screen saver;AD-DOS
--------V-2FC04E-----------------------------
INT 2F - Explosiv v2.00+ - NON-TSR EXECUTING CHECK
AX = C04Eh
Return: AL = 4Fh if Explosiv is running but not memory-resident
Program: Explosiv is a shareware animated screen blanker for DOS and Windows 3
by H&G Software (Reidar Gresseth and Chris Hook)
Range: AH=C0h to AH=C9h, selected by configuration
SeeAlso: AX=C050h
Index: screen saver;Explosiv
--------V-2FC050-----------------------------
INT 2F - Explosiv v2.00+ - INSTALLATION CHECK
AX = C050h
Return: AL = 51h if installed
---v3.0+ ---
BX = interval in clock ticks
CH = animation display color (00h mono, 01h tinge, 02h color)
CL = animation delay factor
DH = animation parameters
DL = INT 10 checking (00h on, 01h off)
SI = number of bytes available for animation code
DI = display type (00h VGA, 01h EGA, 02h CGA, 03h HGC, 04h MDA)
Program: Explosiv is a shareware animated screen blanker for DOS and Windows 3
by H&G Software (Reidar Gresseth and Chris Hook)
Range: AH=C0h to AH=C9h, selected by configuration
SeeAlso: AH=93h,AX=C000h"AD-DOS",AX=C04Eh,AX=C052h,AX=C054h"v3"
SeeAlso: INT 14/AX=AA01h
Index: screen saver;Explosiv
--------V-2FC052-----------------------------
INT 2F - Explosiv v2.00+ - UNINSTALL
AX = C052h
DX:BX = address to return to on successful uninstall
Return: at specified address if successful
AL = 53h on error
Note: specified return address must have the segment of the caller's PSP
SeeAlso: AX=C050h
Index: screen saver;Explosiv
--------V-2FC054-----------------------------
INT 2F - Explosiv v2.x - GET ANIMATION DELAY FACTOR
AX = C054h
Return: AL = delay factor
SeeAlso: AX=C057h
Index: screen saver;Explosiv
--------V-2FC054-----------------------------
INT 2F - Explosiv v3.0+ - UPDATE PARAMETERS
AX = C054h
BX = new interval in clock ticks
CH = animation display color (00h mono, 01h tinge, 02h color)
CL = animation delay factor
DH = animation parameters
DL = INT 10 checking (00h on, 01h off)
SeeAlso: AX=C050h
Index: screen saver;Explosiv
--------V-2FC055-----------------------------
INT 2F - Explosiv v2.x - SET BLANKING INTERVAL
AX = C055h
BX = new interval in clock ticks
Index: screen saver;Explosiv
--------V-2FC056-----------------------------
INT 2F - Explosiv v2.x - SET ANIMATION DISPLAY TYPE
AX = C056h
BL = animated display type (00h mono, 01h color)
SeeAlso: AX=C058h"v2.x"
Index: screen saver;Explosiv
--------V-2FC056-----------------------------
INT 2F - Explosiv v3.0+ - ENABLE/DISABLE EXPLOSIV
AX = C056h
BX = new state
0000h disabled
0100h enabled
0101h enabled, but never blank
0102h enabled, always blank
--------V-2FC057-----------------------------
INT 2F - Explosiv v2.x - SET ANIMATION DELAY FACTOR
AX = C057h
BL = delay factor
SeeAlso: AX=C054h"v2.x"
Index: screen saver;Explosiv
--------V-2FC058-----------------------------
INT 2F - Explosiv v2.x - SET ANIMATION PARAMETER
AX = C058h
BL = animation parameter
Note: the animation parameter has different interpretations for each display
SeeAlso: AX=C056h"v2.x"
Index: screen saver;Explosiv
--------V-2FC058-----------------------------
INT 2F - Explosiv v3.0+ - LOAD NEW ANIMATION DISPLAY CODE
AX = C058h
BX = file handle for file containing display code
CX = number of bytes to load
DX = offset at which animation code should be loaded
Return: AL = status (see #2239)
Note: if AL=00h-03h on return, the file will be closed
Index: screen saver;Explosiv
(Table 2239)
Values for Explosiv function status:
00h successful
01h code too large to available space
02h no data read, load aborted
03h incomplete load, default blanking display loaded instead
58h unexpected offset in DX
--------V-2FC059-----------------------------
INT 2F - Explosiv v2.x - DISABLE EXPLOSIV
AX = C059h
Note: clears flag set by AX=C05Ah
SeeAlso: AX=C05Ah
Index: screen saver;Explosiv
--------V-2FC05A-----------------------------
INT 2F u - Explosiv v2.x - ENABLE EXPLOSIV
AX = C05Ah
BL = ???
Note: sets flag cleared by AX=C059h then stores BL
SeeAlso: AX=C059h,AX=C05Bh
Index: screen saver;Explosiv
--------V-2FC05B-----------------------------
INT 2F - Explosiv v2.x - CHANGE ANIMATION DISPLAY
AX = C05Bh
BL = animation display
Note: this function fails silently if the requested display is not in memory
SeeAlso: AX=C05Ah,AX=C05Ch
Index: screen saver;Explosiv
--------V-2FC05C-----------------------------
INT 2F - Explosiv v2.x - SET INT 10 CHECKING
AX = C05Ch
BL = new state of INT 10 checking (00h enabled, 01h disabled)
SeeAlso: AX=C05Bh
Index: screen saver;Explosiv
--------v-2FC080-----------------------------
INT 2F U - AMI IAM.SYS - INSTALL ??? CALLBACK
AX = C080h
CX:DX -> ??? callback
DI = segment of ??? buffer (first WORD copied into IAM.SYS)
Program: IAM.SYS is the Illegal Activity Monitor portion of American
Megatrends, Inc.'s PC-Defender anti-virus product
Note: also sets ??? flag
SeeAlso: AX=C081h
Format of IAM.SYS buffer:
Offset Size Description (Table 2240)
00h BYTE ???
01h BYTE ???
02h N BYTEs ??? (ASCIZ strings)
--------v-2FC081-----------------------------
INT 2F U - AMI IAM.SYS - CLEAR ???
AX = C081h
Desc: clears the ??? flag that AX=C080h sets
SeeAlso: AX=C080h
--------K-2FC0AE-----------------------------
INT 2F U - HP 100LX/200LX - PUSHKEYS - INSTALLATION CHECK
AX = C0AEh
Return: AX = 4453h if installed
CX = 5259h if installed
Range: AH=C0h to AH=FFh, selected by scanning for signature
SeeAlso: AX=C000h"HP 100LX",AX=C001h"HP 100LX",AX=C0AFh"HP 100LX"
--------K-2FC0AF-----------------------------
INT 2F U - HP 100LX/200LX - PUSHKEYS - INTERNAL - GET BUFFER ADDRESS
AX = C0AFh
Return: ES:DI -> buffer (behind code)
Range: AH=C0h to AH=FFh, selected by scanning for signature with AL=AEh
SeeAlso: AX=C000h"HP 100LX",AX=C001h"HP 100LX",AX=C0AEh"HP 100LX"
--------N-2FC100-----------------------------
INT 2F U - Personal NetWare - STPIPX v1.00 - INSTALLATION CHECK
AX = C100h
Return: AL = FFh if installed
ES:SI -> signature string "STP-IPX$"
BX = version??? (0001h for v1.00)
DI corrupted
Note: AH=C1h is the default value; STPIPX probably scans a range of
multiplex numbers to find a free one, as LSL does
SeeAlso: AX=C000h"LSL",AX=C101h
--------N-2FC101-----------------------------
INT 2F U - Personal NetWare - STPIPX v1.00 - UNINSTALL
AX = C101h
Return: AL = status???
BX corrupted
SeeAlso: AX=C101h
--------N-2FC205-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Redirector - ???
AX = C205h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C2F0h"LapLink"
SeeAlso: AX=C2F1h"LapLink",AX=C301h"LapLink"
--------N-2FC2F0-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Redirector - ???
AX = C2F0h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C205h"LapLink"
SeeAlso: AX=C2F1h"LapLink",AX=C301h"LapLink"
--------N-2FC2F1-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Redirector - ???
AX = C2F1h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C205h"LapLink"
SeeAlso: AX=C2F0h"LapLink",AX=C301h"LapLink"
--------d-2FC300-----------------------------
INT 2F - SETWPR.COM - INSTALLATION CHECK
AX = C300h
Return: AL = FFh if installed
Program: SETWPR is a hard-disk write-protection TSR by Jaroslaw Rafa
SeeAlso: AX=C302h"SETWPR"
--------k-2FC300DX0000-----------------------
INT 2F U - SpaceManager - INSTALLATION CHECK
AX = C300h
DX = 0000h
Return: AL = FFh if any SpaceManager programs installed
BX = 6F73h
CX = 6F68h
Program: SpaceManager is an enhancement for MS-DOS DoubleSpace by Vertisoft
Systems, Inc.
Range: AH=C3h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C300h/DX=0666h
--------k-2FC300-----------------------------
INT 2F U - SpaceManager - INSTALLATION VERIFICATION
AX = C300h
DX = program identifier (see #2241) or 0666h for any SpaceManager prog
BX = 4F53h ('OS')
CX = 4F48h ('OH')
Return: AL = FFh if BX/CX as specified and specified program installed
BX = 6F73h ('os')
CX = 6F68h ('oh')
Range: AH=C3h to AH=FFh, selected by scanning for first free multiplex number
Note: this call is chained if BX,CX, or DX are not as specified above
SeeAlso: AX=C300h/DX=0000h
(Table 2241)
Values for SpaceManager program identifier:
9000h SMOUNT (SuperMount)
9001h SELECTC (SelectCompress)
9002h SUPERX (SuperExchange)
9003h FORTUNE (FortuneTeller)
--------k-2FC301-----------------------------
INT 2F U - SpaceManager - ???
AX = C301h
DX = program identifier (9000h,9001h,9003h) (see #2241)
???
Return: ???
--------N-2FC301-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Compression - ???
AX = C301h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C205h"LapLink"
SeeAlso: AX=C2F0h"LapLink",AX=C3F0h"LapLink",AX=C3F1h"LapLink"
--------k-2FC302-----------------------------
INT 2F U - SpaceManager - ENABLE PROGRAM
AX = C302h
DX = program identifier (9000h,9001h,9003h) (see #2241)
Return: AX destroyed
SeeAlso: AX=C303h,AX=C306h
--------d-2FC302-----------------------------
INT 2F - SETWPR.COM - SET WRITE-PROTECTION STATE
AX = C302h
BL = new state
00h disk may be written
01h disk write-protected
Return: AL = FFh if installed
Program: SETWPR is a hard-disk write-protection TSR by Jaroslaw Rafa
SeeAlso: AX=C300h"SETWPR"
--------k-2FC303-----------------------------
INT 2F U - SpaceManager - DISABLE PROGRAM
AX = C303h
DX = program identifier (9000h,9001h,9003h) (see #2241)
Return: AX destroyed
SeeAlso: AX=C302h,AX=C306h
--------k-2FC304-----------------------------
INT 2F U - SpaceManager - GET PER-DRIVE ENABLEMENT TABLE
AX = C304h
DX = program identifier (9000h,9001h,9003h) (see #2241)
Return: ES:BX -> 26-byte drive table (00h disabled for drive, 01h enabled)
AX destroyed
--------k-2FC305DX9003-----------------------
INT 2F U - SpaceManager - FORTUNE.EXE - NOP
AX = C305h
DX = 9003h
Return: AX destroyed
--------k-2FC305-----------------------------
INT 2F U - SpaceManager - ???
AX = C305h
DX = program identifier (9000h,9001h) (see #2241)
???
Return: ???
--------k-2FC306-----------------------------
INT 2F U - SpaceManager - CHECK WHETHER PROGRAM ENABLED
AX = C306h
DX = program identifier (9000h,9001h,9003h) (see #2241)
Return: AL = current state (00h disabled, FAh enabled)
AH destroyed
SeeAlso: AX=C302h,AX=C303h
--------k-2FC307DX9001-----------------------
INT 2F U - SpaceManager - SELECTC - ???
AX = C307h
DX = 9001h
BX = ???
CX = ???
???
Return: ???
--------k-2FC308DX9001-----------------------
INT 2F U - SpaceManager - SELECTC - ???
AX = C308h
DX = 9001h
???
Return: ???
--------N-2FC3F0-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Compression - ???
AX = C3F0h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C205h"LapLink"
SeeAlso: AX=C2F0h"LapLink",AX=C301h"LapLink",AX=C3F1h"LapLink"
--------N-2FC3F1-----------------------------
INT 2F U - LapLink RemoteAccess (LLRA) - Compression - ???
AX = C3F1h
details not yet available
Range: AH=C0h to AH=FFh, selected by scanning for first free multiplex number
SeeAlso: AX=C000h"LapLink",AX=C002h"LapLink",AX=C205h"LapLink"
SeeAlso: AX=C2F0h"LapLink",AX=C301h"LapLink",AX=C3F0h"LapLink"
--------d-2FC64CBX5553-----------------------
INT 2F U - Smart Prompt - INSTALLATION CHECK
AX = C64Ch
BX = 5553h
Return: AX = 4CC6h if installed
BX = 5355h if installed
Program: Smart Prompt (SMARTPMT) is a freeware TSR by Steve Gibson which forces
an immediate flush of SmartDrive's (and compatible caches') buffers
on returning to the DOS prompt
--------V-2FC700CX434C-----------------------
INT 2F u - COLAP - INSTALLATION CHECK
AX = C700h
CX = 434Ch "CL"
Return: AL = FFh if installed
Program: colap.com is a freeware TSR by Eric Meyer which controls contrast
and brightness of color laptops by changing the VGA palette colors;
for Toshiba laptops there are more hotkeys for shutting off display
and harddisk.
--------v-2FC900BP0000-----------------------
INT 2F U - ThunderByte??? - INSTALLATION CHECK
AX = C900h
BP = 0000h
Return: AL = FFh if installed
BP >= 0014h
Note: called by TBSCANX
SeeAlso: AX=C987h,AX=CA00h
--------v-2FC987-----------------------------
INT 2F U - ThunderByte??? - DISINFECT FILE???
AX = C987h
BX:DX -> filename
BX:CX -> virus name
Return: AX = status
0000h successful???
Note: called by TBSCANX
SeeAlso: AX=CA00h
--------r-2FC9FF-----------------------------
INT 2F C - StackMan - INSTALLATION BROADCAST
AX = C9FFh
BL = BCD version number
CX = number of stacks
DX = stack size in bytes
Program: StackMan is a freeware stack manager by Franz Veldman of ESaSS B.V.
which functions as a replacement for the DOS STACK= command as well
as permitting multiple TSRs to share a pool of stack space
Notes: called by StackMan when it goes resident to inform interested TSRs that
its API is available
the installation check consists of testing for the string "STACKXXX" at
offset 0Ah from the INT B4 handler
SeeAlso: INT B4"StackMan",INT B5"StackMan"
Index: installation check;STACKMAN|broadcasts;STACKMAN installation
--------F-2FCA-------------------------------
INT 2F - FAXPLUS - FAX TSR
AH = CAh
???
Return: ???
Program: FAXTSR is a resident FAX send/receive module for FAXPLUS by Frans
Veldman
SeeAlso: AH=2Ah"Gammafax"
--------v-2FCA00BX5442-----------------------
INT 2F - TBSCANX - INSTALLATION CHECK
AX = CA00h
BX = 5442h ('TB')
Return: AL = state
00h not installed
FFh installed
BX = 7462h ('tb') if BX was 5442h on entry
Program: TBSCANX is a resident virus scanning module by Frans Veldman.
Note: programs may perform virus checks on themselves, other program files,
or their data files by invoking the TBSCANX API.
SeeAlso: AX=4653h,AX=C900h
--------v-2FCA01-----------------------------
INT 2F - TBSCANX - GET STATUS
AX = CA01h
Return: AH = BCD version number (v2.2+)
CAh for versions before 2.2
AL = state (00h = disabled, 01h = enabled)
CX = number of signatures which will be searched
---v2.0---
BX = EMS handle, 0000h if not using EMS
---v2.3+---
BX = segment of swap area, 0000h if not swapped
DX = EMS or XMS handle (XMS handle if BX=0000h), FFFFh if not using EMS
SeeAlso: AX=CA02h
--------v-2FCA02-----------------------------
INT 2F - TBSCANX - SET STATE
AX = CA02h
BL = new state (00h = disabled, 01h = enabled)
SeeAlso: AX=CA01h
--------v-2FCA03-----------------------------
INT 2F - TBSCANX - SCAN BUFFER
AX = CA03h
CX = size of buffer
DS:DX -> buffer containing data to scan
Return: CF clear if no virus signatures found
BX,ES destroyed
CF set if signature found
ES:BX -> ASCIZ virus name (v2.3+)
DS:DX -> ASCIZ virus name (v2.0)
AX,CX,DX destroyed (v2.3+)
all other registers except CS:IP and SS:SP destroyed (v2.0)
SeeAlso: AX=CA04h
--------v-2FCA04-----------------------------
INT 2F - TBSCANX - SCAN FILE
AX = CA04h
DS:DX -> filename
Return: CF clear if no virus signatures found
BX,ES destroyed
CF set if signature found
ES:BX -> ASCIZ virus name
AX,CX,DX destroyed
Note: this function requires at least 4K free memory
SeeAlso: AX=CA03h
--------U-2FCAFEBX0000-----------------------
INT 2F U - THELP v3.0 - INSTALLATION CHECK
AX = CAFEh
BX = 0000h
Return: BX = segment of resident code if installed
0000h if not installed
SeeAlso: AX=5453h,INT 2D"AMIS"
--------!---Section--------------------------