interrupb.txt

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Interrupt List, part 2 of 18
Copyright (c) 1989-1999,2000 Ralf Brown
--------V-10BF--CX0000-----------------------
INT 10 - Athena Digital HGCIBM.COM - INSTALLATION CHECK
	AH = BFh
	CX = 0000h (???)
Return: CX = 0202h
	DL = ??? (internal data, possibly version number)
--------b-10BF00-----------------------------
INT 10 - VIDEO - Compaq Extensions - SELECT EXTERNAL MONITOR
	AX = BF00h
Return: nothing
Desc:	specify that the external monitor become the active monitor
Note:	all registers preserved and the internal monitor is blanked
SeeAlso: AX=BF01h,AX=BF12h,AH=12h/BL=35h
--------b-10BF01-----------------------------
INT 10 - VIDEO - Compaq Extensions - SELECT INTERNAL MONITOR
	AX = BF01h
Return: nothing
Desc:	specify that the internal monitor become the active monitor
Note:	all registers preserved and the external monitor is blanked
SeeAlso: AX=BF00h,AX=BF12h,AH=12h/BL=35h
--------b-10BF02-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET MASTER MODE OF CURRENT CONTROLLER
	AX = BF02h
	BH = master mode
	    04h CGA
	    05h EGA
	    07h MDA
Return: nothing
SeeAlso: AX=BF03h
--------b-10BF03BX0000-----------------------
INT 10 - VIDEO - Compaq Extensions - GET ENVIRONMENT
	AX = BF03h
	BX = 0000h
Return: BH = active monitor
	    (00h = external, 01h = internal, 03h both, 04h neither)
	BL = master mode (see #00211)
	CH = ASIC type and version
	    00h (reserved, very early Compaq VGCs)
	    31h if QVision VGA
	CL = switchable VDU modes supported (see #00212)
	DH = internal monitor type (see #00213)
	DL = external monitor type (see #00213)
SeeAlso: AX=1A00h,AX=BF00h,AX=BF01h,AX=BF02h,AX=BF11h

(Table 00211)
Values for Compaq video master mode:
 00h	switchable VDU not present
 04h	CGA
 05h	EGA
 07h	MDA
 08h	switchable LCD controller present
 09h	plasma VGA
 0Ah	TFT (active-matrix) VGA

Bitfields for Compaq switchable VDU modes support:
Bit(s)	Description	(Table 00212)
 0	CGA supported
 1,2	reserved (1)
 3	MDA supported
 4	BitBLT engine available
 5	132-column support availble
 6	640x480x256 mode available
 7	8-bit DAC mode available

(Table 00213)
Values for Compaq monitor type:
 00h	none
 01h	dual-mode monitor
 02h	5153 RGB monitor (RGBI 16-color)
 03h	Compaq Color monitor
 04h	640x400 flat panel (Plasma CGA)
 05h	VGC monochrome
 06h	VGC color
 07h	8-level mono LCD VGA (internal)
	1024x768 mono VGA (external)
 08h	16-level mono plasma VGA (internal)
	1024x768 color VGA (external)
 09h	4-level mono LCD CGA
 0Ah	16-level mono LCD VGA
 0Bh	active-matrix color VGA
 0Ch	active-matrix mono VGA
 0Dh	STN color VGA
--------b-10BF04-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET MODE SWITCH DELAY
	AX = BF04h
	BH = new state of delay (00h enabled, 01h disabled)
Return: nothing
Note:	the 1993/04/08 sytem ROM appears to use BL instead of BH; a future
	  version of the list will provide more definite information
SeeAlso: AX=BF05h
--------b-10BF05-----------------------------
INT 10 - VIDEO - Compaq Extensions - ENABLE/DISABLE DISPLAY
	AX = BF05h
	BH = new state of video
	    00h off
	    01h on
Return: nothing
Note:	the 1993/04/08 sytem ROM appears to use BL instead of BH; a future
	  version of the list will provide more definite information
SeeAlso: AH=12h/BL=36h,AX=BF04h
--------b-10BF06-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - READ GRAY SCALE TABLE
	AX = BF06h
	CL = address to be read from gray scale table
Return: AL = bit 3-0 - Value read from gray scale table
	CL = address to be read from gray scale table
SeeAlso: AH=12h/BL=33h,AX=BF07h
--------b-10BF07-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - WRITE GRAY SCALE TABLE
	AX = BF07h
	CH = value to write to gray scale table
	CL = address to be written to gray scale table
Return: nothing
SeeAlso: AX=BF06h,AX=BF08h
--------b-10BF08-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - WRITE COLOR MIX REGISTERS
	AX = BF08h
	CH = bits 7-4 green weight
	     bits 3-0 blue weight
	CL = bits 7-4 unused
	     bits 3-0 red weight
Return: nothing
SeeAlso: AH=12h/BL=33h,AX=BF07h
--------b-10BF09-----------------------------
INT 10 - VIDEO - Compaq Extensions - TURN ON REVERSE VIDEO
	AX = BF09h
Return: CF clear
Notes:	sets bit 6 of port 03CEh index 81h; in some cases also sets index 84h
	  to 6Fh and index 83h to 04h
	supported by at least the QVision board and the LTE Lite ROM BIOS
SeeAlso: AX=BF0Ah,AX=BF0Bh
--------b-10BF0A-----------------------------
INT 10 - VIDEO - Compaq Extensions - TURN OFF REVERSE VIDEO
	AX = BF0Ah
Return: CF clear
Notes:	clears bit 6 of port 03CEh index 81h; in some cases also sets index 84h
	  to 80h and index 83h to FBh
	supported by at least the QVision board and the LTE Lite ROM BIOS
SeeAlso: AX=BF09h,AX=BF0Bh
--------b-10BF0B-----------------------------
INT 10 - VIDEO - Compaq Extensions - CHECK WHETHER VIDEO REVERSED
	AX = BF0Bh
Return: CF clear
	AX = state (0000h normal video, 0001h reverse video)
Note:	supported by at least the QVision board and the LTE Lite ROM BIOS
SeeAlso: AX=BF09h,AX=BF0Ah
--------b-10BF0C-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET DAC 6-BIT MODE
	AX = BF0Ch
Return: CF clear
Desc:	specify that video DAC registers use only six bits of color info
Note:	supported by at least the QVision board and the SystemPro XL ROM BIOS
SeeAlso: AX=BF0Dh,AX=BF0Eh
--------b-10BF0D-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET DAC 8-BIT MODE
	AX = BF0Dh
Return: CF clear
Desc:	specify that video DAC registers use all eight bits of color info
Note:	supported by at least the QVision board and the SystemPro XL ROM BIOS
SeeAlso: AX=BF0Ch,AX=BF0Eh
--------b-10BF0E-----------------------------
INT 10 - VIDEO - Compaq Extensions - CHECK DAC 6-BIT/8-BIT mode
	AX = BF0Eh
Return: CF clear
	AL = DAC mode
	    00h in 6-bit mode
	    01h in 8-bit mode
Note:	supported by at least the QVision board and the SystemPro XL ROM BIOS
SeeAlso: AX=BF0Ch,AX=BF0Dh
--------b-10BF0F-----------------------------
INT 10 - VIDEO - Compaq Extensions - SET HIGH ADRESS MAP REGISTER
	AX = BF0Fh
	BX = high address map location in megabytes, or
	    0000h to disable high address map, or
	    FFFFh to let ROM configure high address map
Return: CF clear
	AX = previous value of high address map register
Notes:	supported by at least the QVision board and the SystemPro XL and LTE
	  Lite ROM BIOSes
SeeAlso: AX=BF10h
--------b-10BF10-----------------------------
INT 10 - VIDEO - Compaq Extensions - GET HIGH ADDRESS MAP REGISTER
	AX = BF10h
Return: CF clear
	AX = current value of high address map register
Notes:	supported by at least the QVision board and the SystemPro XL and LTE
	  Lite ROM BIOSes
	the Compaq QVision documentation (October 1993) says the value is
	  returned in BX, but this appears to be one of many typos
SeeAlso: AX=BF0Fh
--------b-10BF11-----------------------------
INT 10 - VIDEO - Compaq Extensions - GET EXTENDED ENVIRONMENT
	AX = BF11h
Return: AL = BFh if supported
	    CF clear
	    ES:DI -> ASCII signature "COMPAQ"
	    ES:SI -> advanced functionality table (see #00214)
Note:	supported by at least the QVision board and the LTE Lite and ProSignia
	  ROM BIOSes
SeeAlso: AX=1A00h,AX=BF03h

Bitfields for Compaq advanced video functionality:
Bit(s)	Description	(Table 00214)
 31	future graphics extensions (reserved, set to 0)
 30-16	reserved
 15-12	available video memory in 256K blocks, less one (0000 = 256K, etc.)
 11-8	reserved
 7	QVision modes supported
 6	Advanced VGA modes supported
 5	Accelerated VGA modes supported
 4	standard VGA modes supported
 3-2	reserved
 1	132-column modes supported
 0	reserved
--------b-10BF12-----------------------------
INT 10 - VIDEO - Compaq Extensions - NEW ACTIVE MONITOR
	AX = BF12h
	BH reserved
	BL = function mask (see #00215)
Return: CF clear
Notes:	this function is a NOP if the VGA subsystem is inactive or the current
	  Display Combination Code is 10h or higher
	supported by at least the QVision board and the LTE Lite and ProSignia
	  ROM BIOSes
SeeAlso: AX=BF01h,AX=BF02h,#00733

Bitfields for function mask:
Bit(s)	Description	(Table 00215)
 7	command mode
	if set, bits 1 and 0 make the monitor active when set
	if clear, bits 1 and 0 toggle the monitor's state when set
 6-2	reserved
 1	internal monitor
 0	external monitor
--------b-10BF13-----------------------------
INT 10 - VIDEO - Compaq QVision - GAMMA CORRECTION
	AX = BF13h
	BL = subfunction
	    00h load gamma correction table for true-color mode
		DS = BIOS data segment
	    01h set palette RAM bypass
	BH = 00h
Return: nothing
Note:	these functions must be called after a video mode set, and are in
	  effect only for the current video mode
SeeAlso: #00733
--------V-10BFA0BXADAD-----------------------
INT 10 - VIDEO - Compaq ADAPT.COM - INSTALLATION CHECK
	AX = BFA0h
	BX = ADADh
Return: AX = BDBDh if newer ADAPT.COM installed
	    BX = BCD version (BH = major, BL = minor)
	    CL = ???
	    CH = ???
	    DL = ???
	AX = ADADh if older version of ADAPT.COM installed
Program: ADAPT is Compaq's Advanced Display Attribute Programming Tool, an
	  optionally-resident utility for setting display colors and cursor
	  size; when resident, it also includes a screen blanker
SeeAlso: AX=BFA1h,AX=BFA2h,AX=DFA5h
Index:	screen saver;ADAPT
--------V-10BFA1-----------------------------
INT 10 - VIDEO - Compaq ADAPT.COM - GET ???
	AX = BFA1h
Return: AX = BDBEh if supported
	    CH = current value of ???
	    DL = current value of ???
SeeAlso: AX=BFA0h,AX=BFA2h
--------V-10BFA2-----------------------------
INT 10 - VIDEO - Compaq ADAPT.COM - SET ???
	AX = BFA2h
	CH = new value for ???
	DL = new value for ???
Return: AX = BDBEh if supported
SeeAlso: AX=BFA0h,AX=BFA1h
--------A-10C0-------------------------------
INT 10 - CU Writer v1.4 - GO TO TEXT ROW AND COLUMN
	AH = C0h
	???
Return: ???
SeeAlso: AH=B1h,AH=C1h,AH=C2h,AH=C3h,AH=C4h
--------V-10C000-----------------------------
INT 10 - S3 SpeedUp v3.00+ - INSTALLATION CHECK
	AX = C000h
Return: AX = FFFFh if installed
	    DX = version number (binary, DH=major, DL=minor)
	    BX = resident code segment
Program: S3SPDUP is a freeware TSR by Dietmar Meschede to improve the speed
	  of chained video modes (both VESA and VGA Mode 13) on S3-chipset
	  video cards
SeeAlso: AX=C001h,AX=C002h,AX=C003h,AX=D000h"S3VBE"
--------V-10C001-----------------------------
INT 10 - S3 SpeedUp v3.00+ - GET ACTIVE OPTIONS
	AX = C001h
Return: AX = FFFFh if function supported
	    BX = currently active options (see #00216)
SeeAlso: AX=C000h,AX=C002h,AX=C003h

Bitfields for S3SpeedUp options:
Bit(s)	Description	(Table 00216)
 0	speed up banked VESA modes
 1	speed up 320x200 VGA mode 13
SeeAlso: #00222
--------V-10C002-----------------------------
INT 10 - S3 SpeedUp v3.00+ - SET ACTIVE OPTIONS
	AX = C002h
	BX = new value for active options (see #00216)
Return: AX = FFFFh if function supported
SeeAlso: AX=C000h,AX=C001h,AX=C003h,AX=D003h"S3VBE"
--------V-10C003-----------------------------
INT 10 - S3 SpeedUp v3.10+ - GET FLAGS
	AX = C003h
Return: AX = FFFFh if function supported
	    BX = flags
		bit 0: SpeedUp is active
		bit 1: Windows run after SpeedUp
SeeAlso: AX=C000h,AX=C001h,AX=C002h,AX=D005h"S3VBE"
--------V-10C004-----------------------------
INT 10 - S3 SpeedUp v3.10+ - RESERVED FUNCTIONS
	AX = C004h-C0FFh
Return: AX = 5555h
SeeAlso: AX=C000h
--------A-10C1-------------------------------
INT 10 - CU Writer v1.4 - OUTPUT TEXT
	AH = C1h
	???
Return: ???
SeeAlso: AH=C0h,AH=C2h,AH=C3h,AH=C4h
--------A-10C2-------------------------------
INT 10 - CU Writer v1.4 - REVERSE TEXT
	AH = C2h
	???
Return: ???
SeeAlso: AH=C0h,AH=C1h,AH=C3h,AH=C4h
--------A-10C3-------------------------------
INT 10 - CU Writer v1.4 - TEXT BAR
	AH = C3h
	???
Return: ???
SeeAlso: AH=C0h,AH=C1h,AH=C4h
--------A-10C4-------------------------------
INT 10 - CU Writer v1.4 - TEXT MENU
	AH = C4h
	???