farcall.lst

A Programmer s Reference to BIOS, DOS, and Third-Party Calls

--------B-@F000F84D--------------------------
CALL F000h:F84Dh - ROM BIOS INT 11 HANDLER
InstallCheck:	present if BIOS is 100% compatible with original IBM PC
--------B-@F000F859--------------------------
CALL F000h:F859h - ROM BIOS INT 15 HANDLER
InstallCheck:	present if BIOS is 100% compatible with original IBM PC
--------B-@F000FE6E--------------------------
CALL F000h:FE6Eh - ROM BIOS INT 1A HANDLER
InstallCheck:	present if BIOS is 100% compatible with original IBM PC
----------@F000FF82--------------------------
CALL F000h:FF82h - PHOENIX CASCADE BIOS A20 CONTROL ENTRY
InstallCheck: ??? (see INT 15h/C0h)
Note:	This is an entry point for A20 control and is used by MS-DOS HIMEM.SYS
--------H-@F000FFF0--------------------------
CALL F000h:FFF0h - COLD-BOOT ADDRESS
InstallCheck:	always present
SeeAlso: @FFFFh:0000h,INT 19
--------H-@FFFF0000--------------------------
CALL FFFFh:0000h - COLD-BOOT ADDRESS
InstallCheck:	always present
Note:	this address is another way of expressing F000h:FFF0h
SeeAlso: @F000h:FFF0h,INT 19
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - 10NET - 10MEMMGR.SYS
InstallCheck:	see INT 21/AX=4402h"10MEMMGR"
SeeAlso: INT 21/AX=4402h"10MEMMGR"
--------t-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Alternate Multiplex Interrupt Specification TSRs
InstallCheck:	see INT 2D"AMIS"
SeeAlso: INT 2D"AMIS"
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - AutoCAD Device Interface
InstallCheck:	see INT 7A/AX=0001h
SeeAlso: INT 7A/AX=0001h
----------@xxxxxxxx---------------------------
CALL xxxxh:xxxxh - BIOS32 Service Directory
InstallCheck:	scan paragraph boundaries E000h to FFFFh for signature string
	"_32_", followed by a valid header structure (see #F0021)
Notes:	a 32-bit-code alternate PCI BIOS entry point may be found (if
	  supported) by requesting the entry point for the API with
	  identifier "$PCI"
	an alternate entry point for INT 1A/AH=B4h may be found (if
	  supported) by requesting the entry point for the API with identifier
	  "$ACF"
	other known identifiers are "$WDS" and "MPTN"
SeeAlso: INT 1A/AX=B100h

Format of BIOS32 Service Directory header structure:
Offset	Size	Description	(Table F0021)
 00h  4 BYTEs	signature "_32_"
 04h	DWORD	physical address of BSD entry point (see #F0022)
 08h	BYTE	header structure version number (currently 00h)
 09h	BYTE	header structure length in paragraphs (currently 01h)
 0Ah	BYTE	checksum (8-bit sum of all bytes in structure, including this
		  one, should equal zero)
 0Bh  5 BYTEs	reserved (0)

(Table F0022)
Call BIOS32 Service Directory entry point with:
	EBX = function
	    00000000h get service entry point
		EAX = service identifier
		    46434124h ("FCA$") Plug-and-Play Auto-Configuration
		    49435024h ("ICP$") PCI BIOS
		    4E54504Dh ("NTPM") ??? MPTN [PhoenixBIOS4 Rev. 6.0]
		    54435724h ("SDW$") ??? WDS$ [PhoenixBIOS4 Rev. 6.0]
		Return: AL = status
			    00h successful
				 EBX = base address of handler's code seg
				 ECX = size of code segment
				 EDX = offset of handler in code seg
			    80h unknown service identifier
	    else
		Return: AL = 81h invalid function
Notes:	the BSD handler assumes that it is running in a 32-bit code segment
	the returned entry points for PCI BIOS and Auto-Config must be called
	  with the same registers as the real-mode INT 1Ah interface,
	  including the value B1h or B4h in AH (AMI BIOS v1.00.05.AX1 returns
	  the same entry point for both interfaces and uses AH to distinguish
	  which API is desired)
	some references indicate that only BL is used for the function number,
	  though at least one implementation actually checks the entire EBX
	  register; for maximum compatibility, the upper 24 bits of EBX should
	  be cleared when calling the entry point
SeeAlso: #F0021
--------E-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Borland TKERNEL
InstallCheck:	see INT 2F/AX=FBA1h/BX=0082h
SeeAlso: INT 2F/AX=FBA1h/BX=0082h
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Buffit v3.0
InstallCheck:	see INT 60"Buffit"
SeeAlso: INT 60"Buffit"
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - CEMM v5.10+ Private API
InstallCheck:	see INT 21/AX=4402h/SF=00h
SeeAlso: INT 21/AX=4402h/SF=00h
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Cloaking - PROTECTED-MODE API
InstallCheck:	see INT 2C/AX=001Dh
SeeAlso: INT 2C/AX=001Dh
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Cloaking - REAL-MODE API
InstallCheck:	see INT 2F/AX=4310h"Cloaking"
SeeAlso: INT 2F/AX=4310h"Cloaking"
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - CTMMSYS.SYS - API
Program: CTMMSYS.SYS is the Creative DOS Multimedia Architecture Integration
	  driver
InstallCheck:	see INT 21/AX=4402h"CTMMSYS"
SeeAlso: INT 21/AX=4402h"CTMMSYS"
--------Q-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DESQview XDI - Driver API
InstallCheck:	see INT 2F/AX=DE01h
SeeAlso: INT 2F/AX=DE01h
--------D-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Device Drivers
InstallCheck:	see INT 21/AH=52h
SeeAlso: INT 21/AH=52h
--------E-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Protected-Mode Interface - MODE SWITCH
InstallCheck:	see INT 2F/AX=1687h
SeeAlso: INT 2F/AX=1687h
--------E-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Protected-Mode Interface - Phar Lap RUN286
InstallCheck:	see INT 2F/AX=168Ah
SeeAlso: INT 2F/AX=168Ah
--------E-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Protected-Mode Interface - Vendor-Specific APIs
InstallCheck:	see INT 31/AX=0A00h
SeeAlso: INT 31/AX=0A00h
--------E-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Protected-Mode Interface - Windows Support
InstallCheck:	see INT 2F/AX=168Ah
SeeAlso: INT 2F/AX=168Ah
--------E-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Protected-Mode Services
InstallCheck:	see INT 2F/AX=43E0h
SeeAlso: INT 2F/AX=43E1h
--------T-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Task Switcher - Callout
InstallCheck:	see INT 2F/AX=4B01h
SeeAlso: INT 2F/AX=4B01h
--------T-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - DOS Task Switcher
InstallCheck:	see INT 2F/AX=4B02h
SeeAlso: INT 2F/AX=4B02h
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Enhanced Parallel Port (EPP) BIOS
InstallCheck:	see INT 17/AX=0200h/BX=5050h
SeeAlso: INT 17/AX=0200h/BX=5050h
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Extended Memory Specification (XMS)
InstallCheck:	see INT 2F/AX=4300h
SeeAlso: INT 2F/AX=4310h
--------c-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - FASTOPEN
InstallCheck:	see INT 2F/AX=122Ah
SeeAlso: INT 2F/AX=122Ah
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - HIGHUMM.SYS
InstallCheck:	see INT 21/AX=4402h"HIGHUMM"
SeeAlso: INT 21/AX=4402h"HIGHUMM"
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - HugeRealMode Driver
InstallCheck:	see INT 78/AX=0000h,INT 78/AX=0001h
SeeAlso: INT 78/AX=0001h
--------V-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - IBM 8514/A Adapter Interface (HDILOAD)
InstallCheck:	see INT 7F/AX=0105h
SeeAlso: INT 7F/AX=0105h
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - IBM 8516 Touch Screen Device Driver
InstallCheck:	see INT 7F/AX=ABCDh
SeeAlso: INT 7F/AX=ABCDh
--------u-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - IBM System 36/38 Workstation Emulation
InstallCheck:	see INT 0C"SYSTEM 36/38"
SeeAlso: INT 0C"SYSTEM 36/38"
--------D-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - IFS Drivers
InstallCheck:	see INT 21/AH=52h
SeeAlso: INT 21/AH=52h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - IFSHLP.SYS
InstallCheck:	see INT 21/AH=3Fh"IFSHLP"
SeeAlso: INT 21/AH=3Fh"IFSHLP"
--------b-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Intel BIOS Upgrade
InstallCheck:	scan paragraph boundaries from 0F0000h to 0FFFFFh for signature
	  string "$IBU" (see #F0023)
SeeAlso: INT 15/AX=D042h/BL=00h
!!! IAL\PROCESSR\PPROBIOS.PDF page 60

Format of Intel BIOS Upgrade header:
Offset	Size	Description	(Table F0023)
 00h  4 BYTEs	signature "$IBU"
 04h	BYTE	IBU specification version (currently 01h = 1.0)
 05h	BYTE	length of entire header structure in bytes (currently 17h)
 06h	BYTE	checksum (forces 8-bit sum of all header bytes to 00h)
 07h	DWORD	real-mode entry point address
 0Bh	WORD	offset of 16-bit protected mode entry point
 0Dh	DWORD	segment base address of 16-bit protected-mode entry point
 11h	WORD	real-mode data segment address
 13h	DWORD	segment base address of 16-bit protected-mode data segment
Notes:	calls from 32-bit protected mode may be made to the 16-bit entry
	  point, but must ensure that any stack arguments are pushed as
	  16-bit values instead of 32-bit values
	the entry point uses standard C calling conventions to implement
	  functions prototyped as
		int far (*entrypoint)(int function, ...)
----------@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Interrupt Sharing Protocol
InstallCheck:	see INT 2D"AMIS"
SeeAlso: INT 2D"AMIS"
--------X-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Intel System Management Bus BIOS
InstallCheck:	see INT 15/AX=53B0h/BH=01h,INT 15/AX=53B0h/BH=02h
SeeAlso: INT 15/AX=53B0h/BH=01h,INT 15/AX=53B0h/BH=05h
--------G-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - INTRSPY v1.0 only
InstallCheck:	see INT 60"INTRSPY"
SeeAlso: INT 60"INTRSPY"
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Memory Managers
InstallCheck:	see INT 21/AX=4402h/SF=00h
SeeAlso: INT 21/AX=4402h/SF=00h
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Microsoft EMM386.EXE
InstallCheck:	see INT 67/AX=FFA5h
SeeAlso: INT 67/AX=FFA5h
--------M-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Microsoft Mouse Driver - Alternate Entry Point
InstallCheck:	INT 33 must be non-NULL, and must not point at an IRET
	  instruction; the alternate entry point is located two bytes past
	  the INT 33 handler
Note:	this alternate entry point accepts the same arguments as the
	  INT 33 interface, but is invoked with a FAR CALL instead of INT 33.
SeeAlso: INT 33/AX=0000h
--------k-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Microsoft Real-Time Compression Interface (MRCI)
InstallCheck:	see INT 1A/AX=B001h
SeeAlso: INT 1A/AX=B001h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Microsoft Workgroup Connection - WORKGRP.SYS
InstallCheck:	see INT 21/AH=3Fh"WORKGRP.SYS"
SeeAlso: INT 21/AX=4402h"WORKGRP.SYS"
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - DOSMGR Device
InstallCheck:	see INT 2F/AX=1684h/BX=0015h
SeeAlso: INT 2F/AX=1684h/BX=0015h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - EDOS Device
InstallCheck:	see INT 2F/AX=1684h/BX=2925h
SeeAlso: INT 2F/AX=1684h/BX=2925h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - POSTMSG Device
InstallCheck:	see INT 2F/AX=1684h/BX=8888h
SeeAlso: INT 2F/AX=1684h/BX=8888h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - REBOOT Device
InstallCheck:	see INT 2F/AX=1684h/BX=0009h
SeeAlso: INT 2F/AX=1684h/BX=0009h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - SHELL Device
InstallCheck:	see INT 2F/AX=1684h/BX=0017h
SeeAlso: INT 2F/AX=1684h/BX=0017h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - VADMAD Device
InstallCheck:	see INT 2F/AX=1684h/BX=0444h
SeeAlso: INT 2F/AX=1684h/BX=0444h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - VbillD Device
InstallCheck:	see INT 2F/AX=1684h/BX=8888h
SeeAlso: INT 2F/AX=1684h/BX=8888h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - VSWITCHD Device
InstallCheck:	see INT 2F/AX=1684h/BX=0750h
SeeAlso: INT 2F/AX=1684h/BX=0750h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - VTD Device
InstallCheck:	see INT 2F/AX=1684h/BX=0005h
SeeAlso: INT 2F/AX=1684h/BX=0005h
--------W-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - MS Windows - WPS Device
InstallCheck:	see INT 2F/AX=1684h/BX=310Eh
SeeAlso: INT 2F/AX=1684h/BX=310Eh
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Netroom RM386 v6.00
InstallCheck:	see INT 2F/AX=4310h
SeeAlso: INT 2F/AX=4310h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell - ODI Link Support Layer
InstallCheck:	see INT 2F/AX=C000h"LSL.COM"
SeeAlso: INT 2F/AX=C000h"LSL.COM"
--------O-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell DOS 7 DELWATCH.EXE
InstallCheck:	see INT 2F/AX=10FEh
SeeAlso: INT 2F/AX=10FEh
--------m-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell DOS 7 EMM386.EXE
InstallCheck:	see INT 2F/AX=12FFh/BX=0106h
SeeAlso: INT 2F/AX=12FFh/BX=0106h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - Access Server Driver
InstallCheck:	see INT 2F/AX=7AF1h
SeeAlso: INT 2F/AX=7AF1h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - DOS Requester
InstallCheck:	see INT 2F/AX=7A20h/BX=0000h
SeeAlso: INT 2F/AX=7A20h/BX=0000h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell Netware - Event Service Layer
InstallCheck:	see INT 2F/AX=C000h"NESL"
SeeAlso: INT 2F/AX=C000h"NESL"
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - IPX
InstallCheck:	see INT 2F/AX=7A00h
SeeAlso: INT 2F/AX=7A00h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - IPXODI
InstallCheck:	see INT 2F/AX=7A2Fh
SeeAlso: INT 2F/AX=7A2Fh
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - TCP/IP Protocol Stack
InstallCheck:	see INT 2F/AX=7A40h
SeeAlso: INT 2F/AX=7A40h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - VLM
InstallCheck:	see INT 2F/AX=7A20h/BX=0000h
SeeAlso: INT 2F/AX=7A20h/BX=0000h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - VLM CallA
InstallCheck:	see INT 2F/AX=7A20h/BX=0001h
SeeAlso: INT 2F/AX=7A20h/BX=0001h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - VLM Multicast
InstallCheck:	see INT 2F/AX=7A20h/BX=0004h
SeeAlso: INT 2F/AX=7A20h/BX=0004h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - VLM Multiplex
InstallCheck:	see INT 2F/AX=7A20h/BX=0002h
SeeAlso: INT 2F/AX=7A20h/BX=0002h
--------N-@xxxxxxxx--------------------------
CALL xxxxh:xxxxh - Novell NetWare - VLM Parse API
InstallCheck:	see INT 2F/AX=7A20h/BX=0003h
SeeAlso: INT 2F/AX=7A20h/BX=0003h