AOH :: INT-A.TXT
PC Interrupt Listing Part 1 of 8
|
Interrupt List Release 32 Last change 9/13/92
---------------------------------------------
The use of -> instead of = signifies that the indicated register or register
pair contains a pointer to the specified item, rather than the item itself.
One or more letters may follow the interrupt number; they have the following
meanings: U - undocumented function, u - partially documented function,
P - available only in protected mode, R - available only in real or V86 mode
----------00---------------------------------
INT 00 - CPU-generated - DIVIDE ERROR
Desc: generated if the divisor of a DIV or IDIV instruction is zero or the
quotient overflows the result register; DX and AX will be unchanged.
Notes: on an 8086/8088, the return address points to the following instruction
on an 80286+, the return address points to the divide instruction
SeeAlso: INT 04
----------01---------------------------------
INT 01 - CPU-generated - SINGLE STEP
Desc: generated after each instruction if TF (trap flag) is set; TF is
cleared on invoking the single-step interrupt handler
Notes: interrupts are prioritized such that external interrupts are invoked
after the INT 01 pushes CS:IP/FLAGS and clears TF, but before the
first instruction of the handler executes
used by debuggers for single-instruction execution tracing, such as
MSDOS DEBUG's T command
SeeAlso: INT 03
----------01---------------------------------
INT 01 - CPU-generated (80386+) - DEBUGGING EXCEPTIONS
Instruction address breakpoint fault - will return to execute instruction
Data address breakpoint trap - will return to following instruction
General detect fault, debug registers in use
Task-switch breakpoint trap
SeeAlso: INT 03
----------02---------------------------------
INT 02 - external hardware - NON-MASKABLE INTERRUPT
Desc: generated by the CPU when the input to the NMI pin is asserted
Notes: return address points to start of interrupted instruction on 80286+
although the Intel documentation states that this interrupt is
typically used for power-failure procedures, it has many other uses
on IBM-compatible machines:
Memory parity error: all except Jr, CONV, and some machines
without memory parity
Breakout switch on hardware debuggers
Coprocessor interrupt: all except Jr and CONV
Keyboard interrupt: Jr, CONV
I/O channel check: CONV, PS50+
Disk-controller power-on request: CONV
System suspend: CONV
Real-time clock: CONV
System watch-dog timer, time-out interrupt: PS50+
DMA timer time-out interrupt: PS50+
Low battery: HP 95LX
Module pulled: HP 95LX
----------03---------------------------------
INT 03 - CPU-generated - BREAKPOINT
Desc: generated by the one-byte breakpoint instruction (opcode CCh)
Notes: used by debuggers to implement breakpoints, such as MSDOS DEBUG's G
command
also used by Turbo Pascal versions 1,2,3 when {$U+} specified
return address points to byte following the breakpoint instruction
SeeAlso: INT 01
----------0309--SI4647-----------------------
INT 03 - Soft-ICE BACK DOOR COMMANDS
AH = 09h
SI = 4647h ('FG')
DI = 4A4Dh ('JM')
AL = function
10h display string in Soft-ICE window
DS:DX -> ASCIZ string to display (max 100 bytes, 0Dh OK)
11h execute Soft-ICE command
DS:DX -> ASCIZ command string (max 100 bytes, 0Dh OK)
12h get breakpoint information
Return: BH = entry number of last breakpoint set
BL = type of last breakpoint set
00h BPM (breakpoint register types)
01h I/O
02h INTerrupt
03h BPX (INT 03h-style breakpoint)
04h reserved
05h range
DH = entry number of last breakpoint to be triggered
DL = type of last triggered breakpoint (see above)
Program: Soft-ICE is a debugger by Nu-Mega Technologies, Inc.
----------04---------------------------------
INT 04 - CPU-generated - INTO DETECTED OVERFLOW
Desc: the INTO instruction will generate this interrupt if OF (Overflow Flag)
is set; otherwise, INTO is effectively a NOP
Note: may be used for convenient overflow testing (to prevent errors from
propagating) instead of JO or a JNO/JMP combination
SeeAlso: INT 00
----------05---------------------------------
INT 05 - PRINT SCREEN
Desc: dump the current text screen to the first printer
Notes: normally invoked by the INT 09 handler when PrtSc key is pressed, but
may be invoked directly by applications
byte at 0050h:0000h contains status used by default handler
00h not active
01h PrtSc in progress
FFh last PrtSc encountered error
default handler is at F000h:FF54h in IBM PC and 100%-compatible BIOSes
SeeAlso: INT 10/AH=12h/BL=20h
----------05---------------------------------
INT 05 - CPU-generated (80186+) - BOUND RANGE EXCEEDED
Desc: generated by BOUND instruction when the value to be tested is less than
the indicated lower bound or greater than the indicated upper bound.
Note: returning from this interrupt re-executes the failing BOUND instruction
----------06---------------------------------
INT 06 - CPU-generated (80286+) - INVALID OPCODE
Desc: this interrupt is generated when the CPU attempts to execute an
invalid opcode (most protected-mode instructions are considered
invalid in real mode) or a BOUND, LDS, LES, or LIDT instruction
which specifies a register rather than a memory address
Notes: return address points to beginning of invalid instruction
with proper programming, this interrupt may be used to emulate
instructions which do not exist; many 386 BIOSes emulate the 80286
undocumented LOADALL instruction which was removed from the 80386+
SeeAlso: INT 0C"CPU",INT 0D"CPU"
----------06---------------------------------
INT 06 - HP 95LX - SLEEP/WAKEUP
Desc: this interrupt is called just before going into light or deep
(shutdown) sleep and just after returning from light or deep sleep
SeeAlso: INT 0B"HP 95LX",INT 15/AX=4DD4h,INT 15/AH=4Eh
----------07---------------------------------
INT 07 - CPU-generated (80286+) - PROCESSOR EXTENSION NOT AVAILABLE
Desc: this interrupt is automatically called if a coprocessor instruction is
encountered when no coprocessor is installed
Note: can be used to emulate a numeric coprocessor in software
SeeAlso: INT 09"MATH UNIT PROTECTION"
----------08---------------------------------
INT 08 - IRQ0 - SYSTEM TIMER
Desc: generated 18.2 times per second by channel 0 of the 8254 system timer,
this interrupt is used to keep the time-of-day clock updated
Notes: programs which need to be invoked regularly should use INT 1C unless
they need to reprogram the timer while still keeping the time-of-day
clock running at the proper rate
default handler is at F000h:FEA5h in IBM PC and 100%-compatible BIOSes
may be masked by setting bit 0 on I/O port 21h
SeeAlso: INT 1C,INT 4A,INT 50"DESQview",INT 58"DoubleDOS",INT 70,INT 78"GO32"
----------08---------------------------------
INT 08 - CPU-generated (80286+) - DOUBLE EXCEPTION DETECTED
Desc: called when multiple exceptions occur on one instruction, or an
exception occurs in an exception handler
Notes: called in protected mode if an interrupt above the defined limit of
the interrupt vector table occurs
return address points at beginning of instruction with errors or the
beginning of the instruction which was about to execute when the
external interrupt caused the exception
if an exception occurs in the double fault handler, the CPU goes into
SHUTDOWN mode (which circuitry in the PC/AT converts to a reset);
this "triple fault" is a faster way of returning to real mode on
many 80286 machines than the standard keyboard controller reset
----------09---------------------------------
INT 09 - IRQ1 - KEYBOARD DATA READY
Desc: this interrupt is generated when data is received from the keyboard.
This is normally a scan code (from either a keypress *or* a key
release), but may also be an ACK or NAK of a command on AT-class
keyboards.
Notes: this IRQ may be masked by setting bit 1 on I/O port 21h
if the BIOS supports an enhanced (101/102-key) keyboard, it calls
INT 15/AH=4Fh after reading the scan code from the keyboard and
before further processing; all further processing uses the scan
code returned from INT 15/AH=4Fh
the default interrupt handler is at F000h:E987h in 100%-compatible
BIOSes
the interrupt handler performs the following actions for certain
special keystrokes:
Ctrl-Break clear keyboard buffer, place word 0000h in buffer,
invoke INT 1B, and set flag at 0040h:0071h
SysRq invoke INT 15/AH=85h
Ctrl-Numlock place system in a tight wait loop until next INT 09
Ctrl-Alt-Del jump to BIOS startup code (either F000h:FFF0h or the
destination of the jump at that address)
Shift-PrtSc invoke INT 05
DRDOS hooks this interrupt to control the cursor shape (underscore/
half block) for overwrite/insert mode
DR Multiuser DOS hooks this interrupt for cursor shape control and to
control whether Ctrl-Alt-Del reboots the current session or the
entire system
SeeAlso: INT 05,INT 0B"HP 95LX",INT 15/AH=4Fh,INT 15/AH=85h,INT 16,INT 1B
SeeAlso: INT 2F/AX=A901h,INT 51"DESQview",INT 59"DoubleDOS",INT 79"GO32"
Values for scan code:
01h Esc 21h F 41h F7
02h 1 ! 22h G 42h F8
03h 2 @ 23h H 43h F9
04h 3 # 24h J 44h F10
05h 4 $ 25h K 45h NumLock
06h 5 % 26h L 46h ScrollLock
07h 6 ^ 27h ; : 47h Home
08h 7 & 28h ' " 48h UpArrow
09h 8 * 29h ` ~ 49h PgUp
0Ah 9 ( 2Ah Left Shift 4Ah Grey-
0Bh 0 ) 2Bh \ | 4Bh LeftArrow
0Ch - _ 2Ch Z 4Ch Keypad 5
0Dh = + 2Dh X 4Dh RightArrow
0Eh Backspace 2Eh C 4Eh Grey+
0Fh Tab 2Fh V 4Fh End
10h Q 30h B 50h DownArrow
11h W 31h N 51h PgDn
12h E 32h M 52h Ins
13h R 33h , < 53h Del
14h T 34h . > 54h SysRq
15h Y 35h / ? 57h F11
16h U 36h Right Shift 58h F12
17h I 37h Grey*
18h O 38h Alt
19h P 39h SpaceBar
1Ah [ { 3Ah CapsLock
1Bh ] } 3Bh F1
1Ch Enter 3Ch F2 E0h prefix code
1Dh Ctrl 3Dh F3 E1h prefix code
1Eh A 3Eh F4 FAh ACK
1Fh S 3Fh F5 FEh RESEND
20h D 40h F6 FFh kbd error/buffer full
----------09---------------------------------
INT 09 - CPU-generated (80286,80386) - PROCESSOR EXTENSION PROTECTION ERROR
Desc: called if the coprocessor attempts to access memory outside a segment
boundary; it may occur at an arbitrary time after the coprocessor
instruction was issued
Note: until the condition is cleared or the coprocessor is reset, the only
coprocessor instruction which may be used is FNINIT; WAIT or other
coprocessor instructions will cause a deadlock because the
coprocessor is still busy waiting for data
SeeAlso: INT 07"CPU"
----------09---------------------------------
INT 09 P - internal hardware - RESERVED BY Intel (80486)
Note: this exception has been moved to INT 0D
SeeAlso: INT 09"MATH",INT 0D
----------0A---------------------------------
INT 0A - IRQ2 - LPT2 (PC), VERTICAL RETRACE INTERRUPT (EGA,VGA)
Notes: the TOPS and PCnet adapters use this interrupt request line by default
DOS 3.2 revectors IRQ2 to a stack-switching routine
on ATs and above, the physical data line for IRQ2 is labeled IRQ9 and
connects to the slave 8259. The BIOS redirects the interrupt for
IRQ9 back here.
under DESQview, only the INT 15h vector and BASIC segment address (the
word at 0000h:0510h) may be assumed to be valid for the handler's
process
many VGA boards do not implement the vertical retrace interrupt,
including the IBM VGA Adapter where the traces are either cut or
removed
SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32"
----------0A---------------------------------
INT 0A - IRQ2 - Tandy 1000-series HARD DISK
Note: may be masked by setting bit 2 on I/O port 21h
SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71
----------0A---------------------------------
INT 0A - IRQ2 - ROLAND MPU MIDI INTERFACE
Note: newer Roland cards and MIDI interfaces by other manufacturers use
a jumper-selectable IRQ, but software and hardware generally defaults
to IRQ2
SeeAlso: INT 52"DESQview",INT 5A"DoubleDOS",INT 71,INT 7A"GO32"
----------0A---------------------------------
INT 0A P - CPU-generated (80286+) - INVALID TASK STATE SEGMENT
Desc: automatically called during a task switch if the new TSS specified by
the task gate is invalid for any of the following reasons:
TSS limit is less than 43 (80286) or 103 (80386/80486)
LDT selector invalid or segment not present
null SS selector, or SS selector outside LDT/GDT limit
stack segment is read-only
stack segment DPL differs from new CPL, or RPL <> CPL
CS selector is outside LDT/GDT limit or not code
non-conforming code segment's DPL differs from CPL
conforming code segment's DPL > CPL
DS/ES selectors outside LDT/GDT limit or not readable segments
Note: the handler must use a task gate in order to have a valid TSS under
which to execute; it must also reset the busy bit in the new TSS
SeeAlso: INT 0B"CPU"
----------0B---------------------------------
INT 0B - IRQ3 - SERIAL COMMUNICATIONS (COM2)
Notes: the TOPS and PCnet adapters use this interrupt request line as an
alternate
on PS/2's, COM2 through COM8 share this interrupt; on many PC's, COM4
shares this interrupt
may be masked by setting bit 3 on I/O port 21h
SeeAlso: INT 0C"COM1",INT 53"DESQview",INT 5B"DoubleDOS",INT 7B"GO32"
----------0B---------------------------------
INT 0B P - CPU-generated (80286+) - SEGMENT NOT PRESENT
Desc: generated when loading a segment register if the segment descriptor
indicates that the segment is not currently in memory, unless the
segment is an LDT (see INT 0A"CPU") or stack segment (see
INT 0C"CPU") needed by a task switch
Note: may be used to implement virtual memory by loading in segments as they
are accessed, clearing the "not present" bit after loading
SeeAlso: INT 0A"CPU",INT 0E"hardware"
----------0B---------------------------------
INT 0B - HP 95LX - LOW-LEVEL KEYBOARD HANDLER
Note: debounces key, places the keycode in I/O register 60h, and calls INT 09
SeeAlso: INT 09,INT 0D"HP 95LX",INT 15/AX=4DD4h
----------0C---------------------------------
INT 0C - IRQ4 - SERIAL COMMUNICATIONS (COM1)
Notes: on many PC's, COM3 shares this interrupt
may be masked by setting bit 4 on I/O port 21h
this vector is modified but not restored by Direct Access v4.0, and
may be left dangling by other programs written with the same version
of compiled BASIC
SeeAlso: INT 0B"COM2",INT 54"DESQview",INT 5C"DoubleDOS",INT 7C"GO32"
----------0C---------------------------------
INT 0C - CPU-generated (80286+) - STACK FAULT
Desc: this interrupt is generated in protected mode on a stack overflow or
underflow, or if an inter-level transition or task switch references
a stack segment marked "not present"; it is generated in real mode
on accessing a word operand at SS:FFFFh
Note: the 80286 will shut down in real mode if SP=1 before a push. On the
PC AT and compatibles, external circuitry generates a reset on
shutdown.
SeeAlso: INT 0B"CPU",INT 0D"CPU"
----------0C---------------------------------
INT 0C - IBM SYSTEM 36/38 WORKSTATION EMULATION - API POINTER
Call offset 100h in the interrupt handler's segment with
AH = function
03h update screen
05h select next session
AL = session number (00h-03h)
Return: AL = session type code
00h not active
01h display session
02h printer session
FEh invalid session number
DS = requested session's data segment (0 if not active)
Return: ???
Format of emulator's data area (offset from interrupt handler's segment):
Offset Size Description
13Eh BYTE bit flags for status line indicators turned on since this byte
last zerod
13Fh BYTE bit flags for status line indicators turned off since this
byte last set to FFh
140h WORD offset of EBCDIC to ASCII translation
146h WORD offset of EBCDIC screen buffer
148h WORD offset of EC (engineering change) level signature
150h BYTE "KEYI"
151h BYTE 5250 key scan code to be sent to remote
15Bh BYTE "SYSAV"
15Dh BYTE 5250 cursor column
15Eh BYTE 5250 cursor row
167h BYTE "DVCTAD"
178h BYTE "FLAGS"
184h BYTE "SESSNOAD"
193h BYTE "STNAD"
198h BYTE "NSDS"
----------0D---------------------------------
INT 0D - IRQ5 - FIXED DISK (PC,XT), LPT2 (AT), reserved (PS/2)
Notes: under DESQview, only the INT 15h vector and BASIC segment address (the
word at 0000h:0510h) may be assumed to be valid for the handler's
process
may be masked by setting bit 5 on I/O port 21h
SeeAlso: INT 0E"IRQ6",INT 0F"IRQ7",INT 55"DESQview",INT 5D"DoubleDOS"
SeeAlso: INT 7D"GO32"
----------0D---------------------------------
INT 0D - IRQ5 - Tandy 1000 60 Hz RAM REFRESH
SeeAlso: INT 55
----------0D---------------------------------
INT 0D - HP 95LX - INFRARED INTERRUPT
SeeAlso: INT 0B"HP 95LX",INT 0E"HP 95LX",INT 15/AX=4DD4h
----------0D---------------------------------
INT 0D - CPU-generated (80286+) - GENERAL PROTECTION VIOLATION
Notes: called in real mode when
an instruction accesses a word operand located at offset FFFFh in
segment CS, DS, ES, FG, or GS
a PUSH MEM or POP MEM instruction contains an invalid bit encoding
in the second byte
an instruction exceeds the maximum length allowed (10 bytes for
80286, 15 bytes for 80386/80486)
an instruction wraps from offset FFFFh to offset 0000h
called in protected mode on protection violations not covered by INT 06
through INT 0C, including
segment limit violations
write to read-only segments
accesses using null DS or ES selectors
accesses to segments with privilege greater than CPL
wrong descriptor type
called on 80486 protected-mode floating-point protection fault
SeeAlso: INT 09"80486",INT 0C"STACK"
----------0E---------------------------------
INT 0E - IRQ6 - DISKETTE CONTROLLER
Desc: this interrupt is generated by the floppy disk controller on
completion of an operation
Notes: default handler is at F000h:EF57h in IBM PC and 100%-compatible BIOSes
may be masked by setting bit 6 on I/O port 21h
SeeAlso: INT 0D"IRQ5",INT 56"DESQview",INT 5E"DoubleDOS",INT 7E"GO32"
----------0E---------------------------------
INT 0E - CPU-generated (80386+ native mode) - PAGE FAULT
Desc: this interrupt is generated in protected and virtual-86 modes on
attempting to access a 4K memory page whose page table entry has
the "present" bit cleared
Note: used to implement virtual memory
SeeAlso: INT 0B"hardware"
----------0E---------------------------------
INT 0E - HP 95LX - EXTERNAL CARD INTERRUPT
SeeAlso: INT 0D"HP 95LX",INT 0F"HP 95LX",INT 15/AX=4DD4h
----------0F---------------------------------
INT 0F - IRQ7 - PARALLEL PRINTER
Desc: this interrupt is generated by the LPT1 printer adapter when the
printer becomes ready
Notes: most printer adapters do not reliably generate this interrupt
the 8259 interrupt controller generates an interrupt corresponding to
IRQ7 when an error condition occurs
SeeAlso: INT 0D"LPT2",INT 57"DESQview",INT 5F"DoubleDOS",INT 7F"GO32"
----------0F---------------------------------
INT 0F - HP 95LX - REAL-TIME CLOCK
SeeAlso: INT 0E"HP 95LX",INT 15/AX=4DD4h,INT 70
----------10---------------------------------
INT 10 - CPU-generated (80286+) - COPROCESSOR ERROR
Desc: this interrupt is generated by the CPU when the -ERROR pin is asserted
by the coprocessor
Note: AT's and clones usually wire the coprocessor to use IRQ13, but not all
get it right
SeeAlso: INT 09"hardware",INT 75
----------1000-------------------------------
INT 10 - VIDEO - SET VIDEO MODE
AH = 00h
AL = mode (see below)
Return: AL = video mode flag (Phoenix BIOS)
20h mode > 7
30h modes 0-5 and 7
3Fh mode 6
AL = CRT controller mode byte (Phoenix 386 BIOS v1.10)
Notes: IBM standard modes do not clear the screen if the high bit of AL is set
(EGA or higher only)
the Tseng ET4000 chipset is used by the Orchid Prodesigner II, Diamond
SpeedSTAR VGA, Groundhog Graphics Shadow VGA, Boca Super X VGA,
Everex EV-673
the installation check for Ahead adapters is the signature "AHEAD" at
C000h:0025h
the installation check for Paradise adapters is the signature "VGA=" at
C000h:007Dh
the installation check for Oak Tech OTI-037/057/067/077 chipsets is the
signature "OAK VGA" at C000h:0008h
the installation check for ATI adapters is the signature "761295520" at
C000h:0031h; the byte at C000h:0043h indicates the chipset revision:
31h for 18800
32h for 18800-1
33h for 18800-2
34h for 18800-4
35h for 18800-5
the two bytes at C000h:0040h indicate the adapter type
"22" EGA Wonder
"31" VGA Wonder
"32" EGA Wonder800+
the byte at C000h:0042h contains feature flags
bit 1: mouse port present
bit 4: programmable video clock
the byte at C000h:0044h contains additional feature flags if chipset
byte > 30h
bit 0: 70 Hz non-interlaced display
bit 1: Korean (double-byte) characters
bit 2: 45 MHz memory clock rather than 40 MHz
bit 3: zero wait states
bit 4: paged ROMs
bit 6: no 8514/A monitor support
bit 7: HiColor DAC
the installation check for Genoa video adapters is the signature
77h XXh 99h 66h at C000h:0037h, where XXh is
00h for Genoa 6200/6300
11h for Genoa 6400/6600
22h for Genoa 6100
33h for Genoa 5100/5200
55h for Genoa 5300/5400
SeeAlso: AX=0070h,AX=007Eh,AX=10E0h,AX=10F0h,AH=40h,AX=6F05h,AH=FFh"GO32"
SeeAlso: INT 33/AX=0028h,INT 5F/AH=00h,INT 62/AX=0001h
Values for video mode:
text/ text pixel pixel colors disply scrn system
grph resol box resoltn pages addr
00h = T 40x25 8x8 16gray 8 B800 CGA,PCjr
= T 40x25 8x14 16gray 8 B800 EGA
= T 40x25 8x16 16 8 B800 MCGA
= T 40x25 9x16 16 8 B800 VGA
01h = T 40x25 8x8 16 8 B800 CGA,PCjr
= T 40x25 8x14 16 8 B800 EGA
= T 40x25 8x16 16 8 B800 MCGA
= T 40x25 9x16 16 8 B800 VGA
02h = T 80x25 8x8 16gray 4 B800 CGA,PCjr
= T 80x25 8x14 16gray 4 B800 EGA
= T 80x25 8x16 16 4 B800 MCGA
= T 80x25 9x16 16 4 B800 VGA
03h = T 80x25 8x8 16 4 B800 CGA,PCjr
= T 80x25 8x14 16 4 B800 EGA
= T 80x25 8x16 16 4 B800 MCGA
= T 80x25 9x16 16 4 B800 VGA
04h = G 40x25 8x8 320x200 4 B800 CGA,PCjr,EGA,MCGA,VGA
05h = G 40x25 8x8 320x200 4gray B800 CGA,PCjr,EGA
= G 40x25 8x8 320x200 4 B800 MCGA,VGA
06h = G 80x25 8x8 640x200 2 B800 CGA,PCjr,EGA,MCGA,VGA
07h = T 80x25 9x14 mono var B000 MDA,Hercules,EGA
= T 80x25 9x16 mono B000 VGA
08h = T 132x25 8x8 16 B800 ATI EGA/VGA Wonder [1]
= T 132x25 8x8 mono B000 ATI EGA/VGA Wonder [1]
= G 20x25 8x8 160x200 16 PCjr, Tandy 1000
= G 90x43 8x8 720x352 mono B000 Hercules + MSHERC.COM
09h = G 40x25 8x8 320x200 16 PCjr
0Ah = G 80x25 8x8 640x200 4 PCjr, Tandy 1000
0Bh = reserved (used internally by EGA BIOS)
= G 640x200 16 Tandy 1000 SL/TL
0Ch = reserved (used internally by EGA BIOS)
0Dh = G 40x25 8x8 320x200 16 8 A000 EGA,VGA
0Eh = G 80x25 8x8 640x200 16 4 A000 EGA,VGA
0Fh = G 80x25 8x14 640x350 mono 2 A000 EGA,VGA
10h = G 80x25 8x14 640x350 4 2 A000 64k EGA
= G 640x350 16 A000 256k EGA,VGA
11h = G 80x30 8x16 640x480 mono A000 VGA,MCGA,ATI EGA,ATI VIP
12h = G 80x30 8x16 640x480 16/256k A000 VGA,ATI VIP
= G 80x30 8x16 640x480 16/64 A000 ATI EGA Wonder
= G 640x480 16 UltraVision+256K EGA
13h = G 40x25 8x8 320x200 256/256k A000 VGA,MCGA,ATI VIP
14h = T 132x25 Nx16 16 XGA, IBM Enhanced VGA [2]
= G 80x25 8x8 640x200 Lava Chrome II EGA
= G 640x400 16 Tecmar VGA/AD
15h = G 80x25 8x14 640x350 Lava Chrome II EGA
16h = G 80x25 8x14 640x350 Lava Chrome II EGA
= G 800x600 16 Tecmar VGA/AD
17h = T 132x25 Tecmar VGA/AD
= G 80x34 8x14 640x480 Lava Chrome II EGA
18h = T 132x25 mono B000 Cirrus 5320 chipset
= T 132x44 8x8 mono Tseng Labs EVA
= T 132x44 8x8 16/256 2 B000 Tseng ET4000 chipset
= G 80x34 8x14 640x480 Lava Chrome II EGA
= G 1024x768 16 Tecmar VGA/AD
19h = T 132x25 8x14 mono Tseng Labs EVA
= T 132x25 8x14 16/256 4 B000 Tseng ET4000 chipset
= T 132x34 mono B000 Cirrus 5320 chipset
1Ah = T 132x28 8x13 mono Tseng Labs EVA
= T 132x28 8x13 16/256 4 B000 Tseng ET4000 chipset
= T 132x44 mono B000 Cirrus 5320 chipset
= G 640x350 256 Tecmar VGA/AD
1Bh = G 640x400 256 Tecmar VGA/AD
1Ch = T 132x25 Cirrus 5320 chipset
= G 640x480 256 Tecmar VGA/AD
1Dh = T 132x43 Cirrus 5320 chipset
= G 800x600 256 Tecmar VGA/AD
1Eh = T 132x44 Cirrus 5320 chipset
1Fh = G 800x600 16 Realtek RTVGA
20h = G 240x128 B000 HP 95LX
21h = T 132x60 16 2 B800 Tseng ET4000 chipset
= G 80x43 8x8 720x348 mono B000 DESQview 2.x+Hercules [3]
= G 1024x768 16 Realtek RTVGA
22h = T 132x44 8x8 Tseng Labs EVA
= T 132x44 8x8 16/256 2 B800 Tseng ET4000 chipset
= T 132x44 8x8 Ahead Systems EGA2001
= T 132x44 8x8 16 2 B800 Ahead B
= T 132x44 16 Orchid Prodesigner VGA
= T 132x43 Allstar Peacock (VGA)
= G 80x43 8x8 720x348 mono B800 DESQview 2.x+Hercules [3]
23h = T 132x25 6x14 Tseng Labs EVA
= T 132x25 8x14 16/256 4 B800 Tseng ET4000 chipset
= T 132x25 8x14 Ahead Systems EGA2001
= T 132x25 8x14 16 4 B800 Ahead B
= T 132x25 8x8 16 B800 ATI EGA Wonder,ATI VIP
= T 132x25 Cirrus 5320 chipset
= T 132x28 Allstar Peacock (VGA)
= T 132x28 16 Orchid Prodesigner VGA
24h = T 132x25 Allstar Peacock (VGA)
= T 132x25 16 Orchid Prodesigner VGA
= T 132x28 6x13 Tseng Labs EVA
= T 132x28 8x13 16/256 4 B800 Tseng ET4000 chipset
= T 132x28 8x12 16 1 B800 Ahead B
= T 132x28 Cirrus 5320 chipset
25h = G 80x60 8x8 640x480 Tseng Labs EVA
= G 80x60 8x8 640x480 16/256 1 A000 Tseng ET4000 chipset
= G 640x480 16 VEGA VGA
= G 80x60 8x8 640x480 16 A000 Orchid Prodesigner VGA
= G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 26h)
= G 640x480 16 NEC GB-1
= G 640x480 16 Cirrus 5320 chipset
= G 640x400 256 Realtek RTVGA
26h = T 80x60 8x8 Tseng Labs EVA
= T 80x60 8x8 16/256 2 B800 Tseng ET4000 chipset
= T 80x60 Allstar Peacock (VGA)
= T 80x60 16 Orchid ProDesigner VGA
= G 80x60 8x8 640x480 Ahead Systems EGA2001
= G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 25h)
= G 640x480 256 Realtek RTVGA
27h = T 132x25 8x8 mono B000 ATI EGA Wonder,ATI VIP
= G 720x512 16 VEGA VGA
= G 720x512 16 Genoa
= G 800x600 256 Realtek RTVGA
28h = T ???x??? VEGA VGA
= G 1024x768 256 Realtek RTVGA (1meg)
29h = G 800x600 16 VEGA VGA
= G 100x37 8x16 800x600 16 A000 Orchid
= G 800x600 16 A000 STB,Genoa,Sigma
= G 800x600 16 Allstar Peacock (VGA)
= G 100x37 8x16 800x600 16/256 1 A000 Tseng ET3000/4000 chipset
= G 800x600 ??? EIZO MDB10
= G 800x600 16 Cirrus 5320 chipset
2Ah = T 100x40 Allstar Peacock (VGA)
= T 100x40 8x16 16 Orchid Prodesigner VGA
= T 100x40 8x15 16/256 4 B800 Tseng ET4000 chipset
= G 1280x1024 256 Realtek RTVGA
2Dh = G 640x350 256 VEGA VGA
= G 640x350 256/256k A000 Orchid, Genoa, STB
= G 80x25 8x14 640x350 256/256k 1 A000 Tseng ET3000/4000 chipset
= G 640x350 256 Cirrus 5320 chipset
2Eh = G 640x480 256 VEGA VGA
= G 80x30 8x16 640x480 256/256k A000 Orchid
= G 640x480 256/256k A000 STB,Genoa,Sigma
= G 80x30 8x16 640x480 256/256k 1 A000 Tseng ET3000/4000 chipset
2Fh = T 160x50 8x8 1280x400 16 4 B800 Ahead B (Wizard/3270)
= G 720x512 256 VEGA VGA
= G 720x512 256 Genoa
= G 80x25 8x16 640x400 256/256k 1 A000 Tseng ET4000 chipset
30h = G 800x600 256 VEGA VGA
= G 100x37 8x16 800x600 256/256k A000 Orchid
= G 800x600 256/256k A000 STB,Genoa,Sigma
= G 720x350 2 3270 PC
= G 800x600 256 Cardinal
= G ???x??? B800 AT&T 6300
= G 100x37 8x16 800x600 256/256k 1 A000 Tseng ET3000/4000 chipset
32h = T 80x34 8x10 16 4 B800 Ahead B (Wizard/3270)
33h = T 132x44 8x8 16 B800 ATI EGA Wonder,ATI VIP
= T 80x34 8x8 16 4 B800 Ahead B (Wizard/3270)
34h = T 80x66 8x8 16 4 B800 Ahead B (Wizard/3270)
36h = G 960x720 16 VEGA VGA
= G 960x720 16 STB
= G 960x720 16 Tseng ET3000 only
37h = T 132x44 8x8 mono B800 ATI EGA Wonder,ATI VIP
= G 1024x768 16 VEGA VGA
= G 128x48 8x16 1024x768 16 A000 Orchid
= G 1024x768 16 A000 STB,Genoa,Sigma
= G 1024x768 16 Definicon
= G 128x48 8x16 1024x768 16 1 A000 Tseng ET3000/4000
38h = G 1024x768 256 STB VGA/EM-16 Plus (1MB)
= G 128x48 8x16 1024x768 256/256k 1 A000 Tseng ET4000 chipset
= G 1024x768 256 Orchid ProDesigner II
3Dh = G 1280x1024 16 Definicon
= G 128x64 8x16 1280x1024 16 1 A000 Tseng ET4000 v3.00 [6,8]
3Eh = G 1280x961 16 Definicon
40h = T 80x43 VEGA VGA, Tecmar VGA/AD
= T 80x43 Video7 V-RAM VGA
= T 80x43 Tatung VGA
= T 100x30 16 MORSE VGA
= T 100x30 Cirrus 510/520 chipset
= G 80x25 8x16 640x400 2 1 B800 AT&T 6300, AT&T VDC600
= G 80x25 8x16 640x400 2 1 B800 Compaq Portable
41h = T 132x25 VEGA VGA
= T 132x25 Tatung VGA
= T 132x25 Video7 V-RAM VGA
= T 100x50 16 MORSE VGA
= T 100x50 Cirrus 510/520 chipset
= G 640x200 16 1 AT&T 6300
42h = T 132x43 VEGA VGA
= T 132x43 Tatung VGA
= T 132x43 Video7 V-RAM VGA
= T 80x34 9x10 4 4 B800 Ahead B (Wizard/3270)
= T 100x60 16 MORSE VGA
= T 100x60 Cirrus 510/520 chipset
= G 80x25 8x16 640x400 16 AT&T 6300, AT&T VDC600
43h = T 80x60 VEGA VGA
= T 80x60 Tatung VGA
= T 80x60 Video7 V-RAM VGA
= T 80x45 9x8 4 4 B800 Ahead B (Wizard/3270)
= T 100x75 16 MORSE VGA
= G 640x200 of 640x400 viewport AT&T 6300 (unsupported)
44h = disable VDC and DEB output AT&T 6300
= T 100x60 VEGA VGA
= T 100x60 Tatung VGA
= T 100x60 Video7 V-RAM VGA
45h = T 132x28 Tatung VGA
= T 132x28 Video7 V-RAM VGA
46h = T 132x25 8x14 mono Genoa 6400
= G 100x40 8x15 800x600 2 AT&T VDC600
47h = T 132x29 8x12 mono Genoa 6400
= G 100x37 8x16 800x600 16 AT&T VDC600
48h = T 132x32 8x12 mono Genoa 6400
= G 80x50 8x8 640x400 2 B800 AT&T 6300, AT&T VDC600
49h = T 312x44 8x8 mono Genoa 6400
= G 80x30 8x16 640x480 Lava Chrome II EGA
4Dh = T 120x25 VEGA VGA
4Eh = T 120x43 VEGA VGA
= T 80x60 8x8 16/256k B800 Oak OTI-067/OTI-077 [7]
4Fh = T 132x25 VEGA VGA
= T 132x60 some Oak Tech VGA [7]
50h = T 80x30 8x16 16/256k B800 Trident TVGA 8800/8900
= T 80x34 Lava Chrome II EGA
= T 80x43 mono VEGA VGA
= T 132x25 9x14 mono Ahead Systems EGA2001
= T 132x25 9x14 4 4 B800 Ahead B
= T 132x25 8x14 16 8 B800 OAK Technologies VGA-16
= T 132x25 8x14 16/256k B800 Oak OTI-037/067/077 [7]
= T 132x30 16 MORSE VGA
= T 132x30 Cirrus 510/520 chipset
= G 80x30 8x16 640x480 16 Paradise EGA-480
= G 80x30 8x16 640x480 16 NEL Electronics BIOS
= G 640x480 mono??? Taxan 565 EGA
51h = T 80x30 8x16 Paradise EGA-480
= T 80x30 9x16 NEL Electronics BIOS
= T 80x30 Lava Chrome II EGA
= T 80x43 8x11 16/256k B800 Trident TVGA 8800/8900
= T 132x25 mono VEGA VGA
= T 132x43 8x8 16 5 B800 OAK Technologies VGA-16
= T 132x43 8x8 16/256k B800 Oak OTI-037/067/077
= T 132x28 9x12 4 4 B800 Ahead B
= T 132x50 16 MORSE VGA
= T 132x50 Cirrus 510/520 chipset
= G 80x34 8x14 640x480 16 ATI EGA Wonder
52h = T 80x60 Lava Chrome II EGA
= T 80x60 8x8 16/256k B800 Trident TVGA 8800/8900
= T 132x43 mono VEGA VGA
= T 132x44 9x8 mono Ahead Systems EGA2001
= T 132x44 9x8 4 2 B800 Ahead B
= T 132x60 16 MORSE VGA
= T 132x60 Cirrus 510/520 chipset
= G 94x29 8x14 752x410 16 ATI EGA Wonder
= G 100x75 8x8 800x600 16 1 A000 OAK Technologies VGA-16
= G 100x75 8x8 800x600 16 A000 Oak OTI-037 chipset [7]
= G 100x37 8x16 800x600 16 A000 Oak OTI-067/077 chips [7]
= G 128x30 8x16 1024x480 16 NEL Electronics BIOS
53h = T 80x25 8x16 NEL Electronics BIOS
= T 80x60 16 MORSE VGA
= T 80x60 Cirrus 510/520 chipset
= T 132x25 8x14 16/256k B800 Trident TVGA 8800/8900
= T 132x43 Lava Chrome II EGA
= G 640x480 256 Oak VGA
= G 80x30 8x16 640x480 256 A000 Oak OTI-067/OTI-077 [7]
= G 100x40 8x14 800x560 16 ATI EGA Wonder,ATI VIP
= G AX PC
54h = T 132x25 Lava Chrome II EGA
= T 132x30 8x16 16/256k B800 Trident TVGA 8800/8900
= T 132x43 8x8 Paradise EGA-480
= T 132x43 8x8 NEL Electronics BIOS
= T 132x43 7x9 16/256k B800 Paradise VGA
= T 132x43 8x9 16/256k B800 Paradise VGA on multisync
= T 132x43 Taxan 565 EGA
= T 132x43 AST VGA Plus
= T 132x43 Hewlett-Packard D1180A
= T 132x43 7x9 16 AT&T VDC600
= T 132x50 8x8 16 A000 NCR 77C22 [9]
= G 100x42 8x14 800x600 16 A000 ATI EGA Wonder, VGA Wonder
= G 100x42 8x14 800x600 16 A000 ATI Ultra 8514A, ATI XL
= G 800x600 256 A000 Oak VGA
= G 100x37 8x16 800x600 256 A000 Oak OTI-067/077 chips [7]
55h = T 80x66 8x8 16/256k A000 ATI VIP
= T 132x25 8x14 Paradise EGA-480
= T 132x25 8x14 NEL Electronics BIOS
= T 132x25 7x16 16/256k B800 Paradise VGA
= T 132x25 8x16 16/256k B800 Paradise VGA on multisync
= T 132x25 Taxan 565 EGA
= T 132x25 AST VGA Plus
= T 132x25 Hewlett-Packard D1180A
= T 132x25 7x16 16 AT&T VDC600
= T 132x25 8x16 16 A000 NCR 77C22 [9]
= T 132x43 8x11 16/256k B800 Trident TVGA 8800/8900
= G 94x29 8x14 752x410 Lava Chrome II EGA
= G 128x48 8x16 1024x768 16/256k A000 ATI VGA Wonder v4+ [4]
= G 1024x768 16/256k ATI VGA Wonder Plus
= G 1024x768 16/256k ATI Ultra 8514A,ATI XL
= G 128x48 8x16 1024x768 4 A000 Oak OTI-067/077 chips [7]
56h = T 132x43 8x8 3??? 2 B000 NSI Smart EGA+
= T 132x43 7x9 4 B000 Paradise VGA
= T 132x43 8x9 4 B000 Paradise VGA on multisync
= T 132x43 mono Taxan 565 EGA
= T 132x43 7x9 2 AT&T VDC600
= T 132x43 9x8 NEL Electronics BIOS
= T 132x50 8x8 4 A000 NCR 77C22 [9]
= T 132x60 8x8 16/256k B800 Trident TVGA 8800/8900
= G 1024x768 16 A000 Oak VGA
= G 128x48 8x16 1024x768 16 A000 Oak OTI-067/077 chips [7]
57h = T 132x25 8x14 3??? 4 B000 NSI Smart EGA+
= T 132x25 7x16 4 B000 Paradise VGA
= T 132x25 8x16 4 B000 Paradise VGA on multisync
= T 132x25 9x14 NEL Electronics BIOS
= T 132x25 mono Taxan 565 EGA
= T 132x25 7x16 2 AT&T VDC600
= T 132x25 9x14 16/256k B800 Trident TVGA 8800/8900
= T 132x25 8x16 4 A000 NCR 77C22 [9]
= G 96x48 8x16 768x1024 16 A000 Oak OTI-067/077 chips [7]
58h = T 80x33 8x14 16 B800 ATI EGA Wonder,ATI VIP
= T 80x32 9x16 16 Genoa 6400
= T 80x43 8x8 NEL Electronics BIOS
= T 132x30 9x16 16/256k B800 Trident TVGA 8800/8900
= G 100x75 8x8 800x600 16/256k A000 Paradise VGA
= G 100x75 8x8 800x600 16 AT&T VDC600
= G 800x600 16 AST VGA Plus, Compaq VGA
= G 800x600 16 Dell VGA
= G 800x600 16 Hewlett-Packard D1180A
= G 800x600 ??? ELT VGA PLUS 16
= G 100x75 8x8 800x600 16 A000 NCR 77C22 [9]
= G 160x64 8x16 1280x1024 16 A000 Oak OTI-077 chipset [7]
59h = T 80x43 9x8 NEL Electronics BIOS
= T 80x66 8x8 16/256k A000 ATI VIP
= T 132x43 9x11 16/256k B800 Trident TVGA 8800/8900
= G 100x75 8x8 800x600 2 A000 Paradise VGA
= G 100x75 8x8 800x600 2 AT&T VDC600
= G 800x600 2 AST VGA Plus, Compaq VGA
= G 800x600 2 Dell VGA
= G 800x600 2 Hewlett-Packard D1180A
= G 100x75 8x8 800x600 2 A000 NCR 77C22 [9]
= G 128x48 8x16 1024x768 256 A000 Oak OTI-077 chipset [7]
5Ah = T 80x60 8x8 NEL Electronics BIOS
= T 132x60 9x8 16/256k B800 Trident TVGA 8800/8900
= G 128x48 8x16 1024x768 2 A000 NCR 77C22 [9]
5Bh = T 80x30 8x16 B800 ATI VGA Wonder (undoc)
= G 640x350 256 Genoa 6400
= G 80x25 8x16 640x400 32K A000 Oak OTI-067/077 chips [7]
= G 800x600 16 Maxxon, SEFCO TVGA, Imtec
= G 100x75 8x8 800x600 16/256k A000 Trident TVGA 8800, 8900
= G 800x600 ??? Vobis MVGA
= G 100x37 8x16 800x600 NEL Electronics BIOS
= G 128x48 8x16 1024x768 16 A000 NCR 77C22 [8,9]
5Ch = T 100x37 8x16 NEL Electronics BIOS
= G 640x400 256 Logix, ATI Prism Elite
= G 640x400 256 Maxxon, SEFCO TVGA, Imtec
= G 80x25 8x16 640x400 256/256k A000 Zymos Poach, Hi Res 512
= G 80x25 8x16 640x400 256/256k A000 Trident TVGA 8800/8900
= G 80x30 8x16 640x480 256 Genoa 6400
= G 80x30 8x16 640x480 32K A000 Oak OTI-077 chipset [7]
= G 100x75 8x8 800x600 256 A000 NCR 77C22 [9]
5Dh = T 100x75 8x8 NEL Electronics BIOS
= G 640x480 256 Logix, ATI Prism Elite
= G 640x480 256 Maxxon, SEFCO TVGA, Imtec
= G 80x30 8x16 640x480 256/256k A000 Zymos Poach, Hi Res 512
= G 80x30 8x16 640x480 256/256k A000 Trident TVGA 8800 (512K)
= G 128x48 8x16 1024x768 16 A000 NCR 77C22 [9]
5Eh = G 640x400 256 Paradise VGA,VEGA VGA
= G 640x400 256 AST VGA Plus, NCR 77C22
= G 640x400 256 Compaq VGA, Dell VGA
= G 80x25 8x16 640x400 256 AT&T VDC600
= G 80x25 8x16 640x400 256 A000 NCR 77C22 [9]
= G 800x600 16 Logix, ATI Prism Elite
= G 100x37 8x16 800x600 16 NEL Electronics BIOS
= G 100x75 8x8 800x600 256 Genoa 6400
= G 100x75 8x8 800x600 256/256k A000 Zymos Poach, Trident 8900
= G 100x75 8x8 800x600 256/256k A000 Hi Res 512
5Fh = G 640x480 256 Paradise VGA
= G 640x480 256 AST VGA Plus, NCR 77C22
= G 640x480 256 Compaq VGA, Dell VGA
= G 640x480 256 Hewlett-Packard D1180A
= G 80x30 8x16 640x480 256 AT&T VDC600 (512K)
= G 80x30 8x16 640x480 256 A000 NCR 77C22 [9]
= G 1024x768 16 Logix, ATI Prism Elite
= G 1024x768 16 Maxxon, Imtec
= G 128x48 8x16 1024x768 16 Genoa 6400
= G 128x48 8x16 1024x768 16/256k A000 Zymos Poach, Hi Res 512
= G 128x48 8x16 1024x768 16/256k A000 Trident TVGA 88/8900 512K
60h = T 132x25 8x14 16/64 8 B800 Quadram Ultra VGA
= T 132x25 8x14 16 Genoa 6400
= T 132x25 Cirrus 5320 chipset
= G 80x??? ???x400 Corona/Cordata BIOS 4.10+
= G 80x25 8x16 640x400 256 1 A000 Ahead A, Ahead B
= G 752x410 VEGA VGA
= G 752x410 16 Tatung VGA
= G 752x410 16 Video7 V-RAM VGA
= G 128x48 8x16 1024x768 4/256k A000 Trident TVGA 8900
61h = T 132x29 8x12 16/64 8 B800 Quadram Ultra VGA
= T 132x29 8x8 16 Genoa 6400
= T 132x50 Cirrus 5320 chipset
= G ???x400 Corona/Cordata BIOS 4.10+
= G 80x25 8x16 640x400 256 A000 ATI VGA Wonder,VGA Wonder+
= G 80x25 8x16 640x400 256 A000 ATI Ultra 8514A,ATI XL
= G 80x30 8x16 640x480 256 1 A000 Ahead A, Ahead B (512K)
= G 720x540 VEGA VGA
= G 720x540 16 Tatung VGA
= G 720x540 16 Video7 V-RAM VGA
= G 96x64 8x16 768x1024 16/256k A000 Trident TVGA 88/8900 512K
= G 128x48 8x16 1024x768 256 A000 NCR 77C22 [8,9]
62h = T 132x32 8x11 16/64 6 B800 Quadram Ultra VGA
= T 132x32 8x12 16 Genoa 6400
= G 640x450 16 Cirrus 510/520 chipset
= G 80x30 8x16 640x480 256 A000 ATI VGA Wonder,VGA Wonder+
= G 80x30 8x16 640x480 256 A000 ATI Ultra 8514A,ATI XL
= G 800x600 VEGA VGA
= G 800x600 16 Tatung VGA
= G 800x600 16 Video7 V-RAM VGA
= G 100x75 8x8 800x600 256 1 A000 Ahead A, Ahead B (512K)
= G 128x48 8x16 1024x768 256/256k A000 Trident TVGA 8900, Zymos
= G 128x48 8x16 1024x768 256 A000 NCR 77C22 [9]
63h = T 132x44 8x8 16/64 5 B800 Quadram Ultra VGA
= T 132x44 8x8 16 Genoa 6400
= G 720x540 16 MORSE VGA
= G 720x540 16 Cirrus 510/520 chipset
= G 100x42 8x14 800x600 256 A000 ATI VGA Wonder,VGA Wonder+
= G 100x42 8x14 800x600 256 A000 ATI Ultra 8514A,ATI XL
= G 128x48 7x16 1024x768 256 1 A000 Ahead B (1MB)
= G 1024x768 2 Video7 V-RAM VGA
64h = T 132x60 8x8 16 Genoa 6400
= G 800x600 16 MORSE VGA
= G 800x600 16 Cirrus 510/520 chipset
= G 800x600 ??? SAMPO-Mira VGA
= G 1024x768 4 Video7 V-RAM VGA
= G 128x48 8x16 1024x768 256 A000 ATI VGA Wonder Plus,ATI XL
65h = G 1024x768 16 Video7 V-RAM VGA
= G 128x48 8x16 1024x768 16 A000 ATI VGA Wonder
66h = G 640x400 256 Tatung VGA
= G 640x400 256 Video7 V-RAM VGA
67h = G 640x480 256 Video7 V-RAM VGA
= G 128x48 8x16 1024x768 4 A000 ATI VGA Wonder
= G 160x64 8x16 1280x1024 16 A000 NCR 77C22 [8,9]
69h = G 720x540 256 Video7 V-RAM VGA
6Ah = G 800x600 16 A000 VESA standard interface
= G 100x75 8x8 800x600 16 Genoa 6400
= G 800x600 16 A000 Ahead A
= G 100x75 8x8 800x600 16 1 A000 Ahead B (VESA) (see 71h)
= G 800x600 16 Zymos Poach, Hi Res 512
= G 800x600 16 Epson LT-386SX in CRT Mode
= G 800x600 16 Compuadd 316SL in CRT Mode
= G 100x42 8x14 800x600 A000 ATI VGA Wonder (undoc)
= G 160x64 8x16 1280x1024 256 A000 NCR 77C22 [8,9]
6Bh = T 100x37 8x16 16 Genoa 6400
= T 100x37 8x16 NEL Electronics BIOS
6Ch = G 100x75 8x8 800x600 256 Genoa 6400
70h = extended mode set (see AX=0070h) Everex Micro Enhancer EGA
= T 40x25 8x8 16 8 B800 Quadram (CGA double scan)
= G 360x480 256 Cirrus 510/520/5320 chips
= G 90x28 8x14 720x392 16 1 A000 Ahead B
= G 800x600 16 C&T chipset, Cardinal
71h = T 80x25 8x8 16 8 B800 Quadram (CGA double scan)
= G 528x400 256 Cirrus 510/520 chipset
= G 100x35 8x16 800x600 16of64 A000 NSI Smart EGA+
= G 100x75 8x8 800x600 16 1 A000 Ahead B (same as 6Ah)
= G 960x720 16 C&T chipset, Cardinal
72h = T 80x60 8x8 16 B800 Quadram Ultra VGA
= T 80x60 8x8 16 B800 Genoa 6400
= G 528x480 256 Cirrus 510/520 chipset
= G 640x480 32768 A000 ATI
= G 1024x768 16 C&T chipset, Cardinal
73h = G 80x60 8x8 640x480 16 A000 Quadram Ultra VGA
= G 80x60 8x8 640x480 16 Genoa 6400
74h = T 80x66 8x8 16 B800 Quadram Ultra VGA
= T 80x66 8x8 16 B800 Genoa 6400
= G 640x400 2 B800 Toshiba 3100 AT&T mode
= G 128x48 8x16 1024x768 16 1 A000 Ahead A, Ahead B (512K)
75h = G 128x48 8x16 1024x768 4 1 A000 Ahead B
= G 80x66 640x528 16??? A000 Quadram Ultra VGA
= G 640x528 16 Geno Super EGA Hirez+
76h = T 94x29 8x14 16 B800 Quadram Ultra VGA
= G 128x48 8x16 1024x768 2 1 A000 Ahead B
77h = G 94x29 752x410 16??? A000 Quadram Ultra VGA
= G 752x410 16 Genoa Super EGA Hirez+
78h = T 100x37 8x16 16 Genoa 6400
= T 100x75 8x8 16 B800 Quadram Ultra VGA
= G 640x400 256 STB VGA/EM-16 Plus
= G 640x400 256 Cardinal, C&T chipset
= G 640x400 256 Cirrus 5320 chipset
79h = G 640x480 256 Cardinal, C&T chipset
= G 100x75 800x600 16??? A000 Quadram Ultra VGA
= G 800x600 16 Genoa Super EGA Hirez+
= G 100x75 8x8 800x600 16 Genoa 6400
7Ah = T 114x60 8x8 16 B800 Quadram Ultra VGA
= G 720x540 256 C&T chipset, Cardinal
7Bh = G 800x600 256 C&T chipset, Cardinal
= G 114x60 912x480 16??? A000 Quadram Ultra VGA
= G 912x480 16 Genoa Super EGA Hirez+
7Ch = G 512x512 16 Genoa
7Dh = G 64x32 8x16 512x512 256 Genoa
7Eh = special mode set (see AX=007Eh) Paradise VGA, AT&T VDC600
= G 80x25 8x16 640x400 256 Genoa 6400
7Fh = special function set (see AX=007Fh) Paradise VGA, AT&T VDC600
= G 128x48 8x16 1024x768 4 Genoa 6400
82h = T 80x25 B&W AT&T VDC overlay mode [5]
83h = T 80x25 AT&T VDC overlay mode [5]
86h = G 640x200 B&W AT&T VDC overlay mode [5]
88h = G 90x43 8x8 720x352 mono B000 Hercules + MSHERC.COM
C0h = G 640x400 2/prog pallet AT&T VDC overlay mode [5]
C4h = disable output AT&T VDC overlay mode [5]
D0h = G 640x400 2 B800 DEC VAXmate AT&T mode
Notes:
[1] for ATI EGA Wonder, mode 08h is only valid if SMS.COM is loaded resident.
SMS maps mode 08h to mode 27h if the byte at location 0040:0063 is 0B4h,
otherwise to mode 23h, thus selecting the appropriate (monochrome or
color) 132x25 character mode.
for ATI VGA Wonder, mode 08h is the same, and only valid if VCONFIG loaded
resident
[2] early XGA boards support 132-column text but do not have this BIOS mode
[3] DESQview intercepts calls to change into these two modes (21h is page 0,
22h is page 1) even if there is no Hercules graphics board installed
[4] ATI BIOS v4-1.00 has a text-scrolling bug in this mode
[5] for AT&T VDC overlay modes, BL contains the DEB mode, which may be 06h,
40h, or 44h
[6] BIOS text support is broken in this undocumented mode; scrolling moves only
about 1/3 of the screen (and does even that portion incorrectly), while
screen clears only clear about 3/4.
[7] The Oak OTI-037/067/077 modes are present in the Oak VGA BIOS, which OEMs
may choose to use only partially or not at all; thus, not all Oak boards
support all "Oak" modes listed here
[8] interlaced only
[9] this card uses the full 128K A000h-BFFFh range for the video buffer,
precluding the use of a monochrome adapter in the same system
----------100070-----------------------------
INT 10 - VIDEO - Everex Micro Enhancer EGA/Viewpoint VGA - EXTENDED MODE SET
AX = 0070h
BL = mode (see below)
SeeAlso: AH=00h,AX=6F05h,AX=7000h/BX=0004h,AH=FFh"GO32"
Values for video mode:
text/ text pixel pixel colors disp scrn monitor adapter
grph resol box resoltn page addr
00h = G 640x480 16 multsync EGA,VGA
01h = G 752x410 16 multsync EGA,VGA
02h = G 800x600 16 multsync EGA,VGA
03h = T 80x34 multsync EGA,VGA
04h = T 80x60 multsync EGA,VGA
05h = T 94x29 multsync EGA only
06h = T 94x51 multsync EGA only
07h = T 100x43 8x14 16 VGA only
08h = T 100x75 8x8 16 VGA only
09h = T 80x44 EGA EGA only
0Ah = T 132x25 EGA EGA,VGA
0Bh = T 132x44 EGA EGA,VGA
0Ch = T 132x25 CGA EGA only
0Dh = T 80x44 mono EGA only
0Eh = T 132x25 mono
0Fh = T 132x44 mono
10h = reserved
11h = G 1280x350 4 EGA only
12h = G 1280x600 4 EGA only
13h = G 640x350 256 EGA,EV673
14h = G 640x400 256
15h = G 512x480 256
16h = T 80x30 8x16 256 VGA only
18h = T 100x27 8x16 16 VGA only
20h = G 1024x768 16 Everex 629,678
Everex EV-673
21h = T 160x64 8x16 1280x1024 16 1MB VGA only
30h = G 640x480 256 Everex 629,678
Everex EV-673
31h = G 800x600 256 Everex 629,678
Everex EV-673
32h = G 128x48 8x16 1024x768 256 1MB VGA only
40h = T 132x30 8x16 16 VGA only
50h = T 132x32 8x16 mono VGA only
62h = G 40x25 8x8 320x200 32K Vwpt TC (EV629)
70h = G 64x30 8x16 512x480 32K Viewpoint TC
71h = G 80x30 8x16 640x480 32K Viewpoint TC
76h = G 64x30 8x16 512x480 16M Viewpoint TC
77h = G 80x30 8x16 640x480 16M Viewpoint TC
----------10007E-----------------------------
INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - SET SPECIAL MODE
AX = 007Eh
BX = horizontal dimension of the mode desired
CX = vertical dimension of the mode desired
(both BX/CX in pixels for graphics modes, rows for alpha modes)
DX = number of colors of the mode desired (0000h for monochrome modes)
Return: BH = 7Eh if successful (Paradise VGA)
AL = 7Eh if successful (AT&T VDC600)
SeeAlso: AH=00h,AX=0070h,AX=007Fh,AX=6F05h,AH=FFh"GO32"
----------10007F-----------------------------
INT 10 - VIDEO - Paradise VGA, AT&T VDC600 - EXTENDED FUNCTIONS
AX = 007Fh
BH = function
00h set VGA operation
01h set non-VGA operation
color modes (0,1,2,3,4,5,6) will set non-VGA CGA operation
monochrome mode 7 will set non-VGA MDA/Hercules operation
02h query mode status
Return: BL = 00h if operating in VGA mode, 01h if non-VGA mode
CH = total video RAM size in 64k byte units
CL = video RAM used by the current mode
03h lock current mode
allows current mode (VGA or non-VGA) to survive re-boot
04h enter CGA mode (AT&T VDC600 only)
05h enter MDA mode (AT&T VDC600 only)
0Ah,0Bh,0Ch,0Dh,0Eh,0Fh WRITE PARADISE REGISTERS 0,1,2,3,4,5
(port 03CEh indices 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh)
BL = value to set in the paradise register
1Ah,1Bh,1Ch,1Dh,1Eh,1Fh READ PARADISE REGISTERS 0,1,2,3,4,5
(port 03CEh indices 0Ah,0Bh,0Ch,0Dh,0Eh,0Fh)
Return: BL = value of the paradise register
BH = 7Fh if successful
Return: AL = 7Fh if successful (AT&T VDC600)
SeeAlso: AX=007Eh
----------1001-------------------------------
INT 10 - VIDEO - SET TEXT-MODE CURSOR SHAPE
AH = 01h
CH = bit 7 should be zero
bits 6,5 cursor blink
(00=normal, 01=invisible, 10=erratic, 11=slow)
(00=normal, other=invisible on EGA/VGA)
bits 4-0 top scan line containing cursor
CL = bottom scan line containing cursor (bits 0-4)
Notes: buggy on EGA systems--BIOS remaps cursor shape in 43 line modes, but
returns unmapped cursor shape
UltraVision scales size to the current font height by assuming 14-line
monochrome and 8-line color fonts; this call is not valid if cursor
emulation has been disabled
applications which wish to change the cursor by programming the
hardware directly on EGA or above should call INT 10/AX=1130h or
read 0040h:0085h first to determine the current font height
BUG: AMI 386 BIOS and AST Premier 386 BIOS will lock up the system if AL
is not equal to the current video mode
SeeAlso: AH=03h,AX=CD05h
----------1002-------------------------------
INT 10 - VIDEO - SET CURSOR POSITION
AH = 02h
BH = page number
0-3 in modes 2&3
0-7 in modes 0&1
0 in graphics modes
DH = row (00h is top)
DL = column (00h is left)
SeeAlso: AH=03h,AH=05h,INT 60/DI=030Bh
----------1003-------------------------------
INT 10 - VIDEO - GET CURSOR POSITION AND SIZE
AH = 03h
BH = page number
0-3 in modes 2&3
0-7 in modes 0&1
0 in graphics modes
Return: AX = 0000h (Phoenix BIOS)
CH = start scan line
CL = end scan line
DH = row (00h is top)
DL = column (00h is left)
Notes: a separate cursor is maintained for each of up to 8 display pages
many ROM BIOSes incorrectly return the default size for a color display
(start 06h, end 07h) when a monochrome display is attached
SeeAlso: AH=01h,AH=02h
----------1004-------------------------------
INT 10 - VIDEO - READ LIGHT PEN POSITION (except VGA)
AH = 04h
Return: AH = light pen trigger flag
00h not down/triggered
01h down/triggered
DH,DL = row,column of character light pen is on
CH = pixel row (graphics modes 04h-06h)
CX = pixel row (graphics modes with >200 rows)
BX = pixel column
Notes: on a CGA, returned column numbers are always multiples of 2 (320-
column modes) or 4 (640-column modes)
returned row numbers are only accurate to two lines
----------1005-------------------------------
INT 10 - VIDEO - SELECT ACTIVE DISPLAY PAGE
AH = 05h
AL = new page number (00h to number of pages - 1) (see AH=00h)
Note: to determine whether the requested page actually exists, use AH=0Fh
to query the current page after making this call
SeeAlso: AH=0Fh,AH=43h,AH=45h
----------1005-------------------------------
INT 10 - VIDEO - PCjr - MANIPULATE CRT/CPU PAGE REGISTERS
AH = 05h
AL = subfunction
80h read CRT and CPU page registers
Return: BH = CRT page register
BL = CPU page register
81h set CPU page register
BL = CPU page
82h set CRT page register
BH = CRT page
83h set both CPU and CRT page registers
BL = CPU page
BH = CRT page
Notes: the CPU page determines which 16K block of the first 128K of physical
memory will be mapped at B800h by the hardware
the CRT page determines the start address of the memory used by the
video controller
----------1005-------------------------------
INT 10 - VIDEO - Corona/Cordata BIOS v4.10+ - GRAPHICS BITMAP BUFFER
AH = 05h
AL =
00h set address of graphics bitmap buffer (video modes 60h,61h)
BX = segment of buffer
0Fh get address of graphics bitmap buffer (video modes 60h,61h)
Return: DX = segment of graphics bitmap buffer
----------1006-------------------------------
INT 10 - VIDEO - SCROLL UP WINDOW
AH = 06h
AL = number of lines by which to scroll up (00h = clear entire window)
BH = attribute used to write blank lines at bottom of window
CH,CL = row,column of window's upper left corner
DH,DL = row,column of window's lower right corner
Note: affects only the currently active page (see AH=05h)
Warning: some implementations have a bug which destroys BP
SeeAlso: AH=07h,AH=72h,AH=73h,AX=7F07h,INT 50/AX=0014h
----------1007-------------------------------
INT 10 - VIDEO - SCROLL DOWN WINDOW
AH = 07h
AL = number of lines by which to scroll down (00h=clear entire window)
BH = attribute used to write blank lines at top of window
CH,CL = row,column of window's upper left corner
DH,DL = row,column of window's lower right corner
Note: affects only the currently active page (see AH=05h)
Warning: some implementations have a bug which destroys BP
SeeAlso: AH=06h,AH=72h,AH=73h,INT 50/AX=0014h
----------1008-------------------------------
INT 10 - VIDEO - READ CHARACTER AND ATTRIBUTE AT CURSOR POSITION
AH = 08h
BH = page number (00h to number of pages - 1) (see AH=00h)
Return: AH = attribute
bit 7: blink
bits 6-4: background color
000 black
001 blue
010 green
011 cyan
100 red
101 magenta
110 brown
111 white
bits 3-0: foreground color
0000 black 1000 dark gray
0001 blue 1001 light blue
0010 green 1010 light green
0011 cyan 1011 light cyan
0100 red 1100 light red
0101 magenta 1101 light magenta
0110 brown 1110 yellow
0111 light gray 1111 white
AL = character
Notes: for monochrome displays, a foreground of 1 with background 0 is
underlined
the blink bit may be reprogrammed to enable intense background colors
using AX=1003h or by programming the CRT controller
the foreground intensity bit (3) can be programmed to switch between
character sets A and B on EGA and VGA cards, thus enabling 512
simultaneous characters on screen. In this case the bit's usual
function (intensity) is regularly turned off.
SeeAlso: AH=09h,AX=1003h,AX=5001h
----------1009-------------------------------
INT 10 - VIDEO - WRITE CHARACTER AND ATTRIBUTE AT CURSOR POSITION
AH = 09h
AL = character to display
BH = page number (00h to number of pages - 1) (see AH=00h)
BL = attribute (text mode) or color (graphics mode)
if bit 7 set in graphics mode, character is xor'ed onto screen
CX = number of times to write character
Notes: all characters are displayed, including CR, LF, and BS
replication count in CX may produce an unpredictable result in graphics
modes if it is greater than the number of positions remaining in the
current row
SeeAlso: AH=08h,AH=0Ah,AH=4Bh"GRAFIX",INT 17/AH=60h,INT 1F,INT 43,INT 44
----------100A-------------------------------
INT 10 - VIDEO - WRITE CHARACTER ONLY AT CURSOR POSITION
AH = 0Ah
AL = character to display
BH = page number (00h to number of pages - 1) (see AH=00h)
BL = attribute (PCjr only) or color (graphics mode)
if bit 7 set in graphics mode, character is xor'ed onto screen
CX = number of times to write character
Notes: all characters are displayed, including CR, LF, and BS
replication count in CX may produce an unpredictable result in graphics
modes if it is greater than the number of positions remaining in the
current row
SeeAlso: AH=08h,AH=09h,AH=4Bh,INT 17/AH=60h,INT 1F,INT 43,INT 44
----------100B--BH00-------------------------
INT 10 - VIDEO - SET BACKGROUND/BORDER COLOR
AH = 0Bh
BH = 00h
BL = background/border color (border only in text modes)
SeeAlso: AH=0Bh/BH=01h
----------100B--BH01-------------------------
INT 10 - VIDEO - SET PALETTE
AH = 0BH
BH = 01h
BL = palette ID
00h background, green, red, and brown/yellow
01h background, cyan, magenta, and white
SeeAlso: AH=0Bh/BH=00h
----------100C-------------------------------
INT 10 - VIDEO - WRITE GRAPHICS PIXEL
AH = 0Ch
BH = page number
AL = pixel color (if bit 7 set, value is xor'ed onto screen)
CX = column
DX = row
Notes: valid only in graphics modes
BH is ignored if the current video mode supports only one page
SeeAlso: AH=0Dh,AH=46h
----------100D-------------------------------
INT 10 - VIDEO - READ GRAPHICS PIXEL
AH = 0Dh
BH = page number
CX = column
DX = row
Return: AL = pixel color
Notes: valid only in graphics modes
BH is ignored if the current video mode supports only one page
SeeAlso: AH=0Ch,AH=47h
----------100E-------------------------------
INT 10 - VIDEO - TELETYPE OUTPUT
AH = 0Eh
AL = character to write
BH = page number
BL = foreground color (graphics modes only)
Desc: display a character on the screen, advancing the cursor and scrolling
the screen as necessary
Notes: characters 07h (BEL), 08h (BS), 0Ah (LF), and 0Dh (CR) are interpreted
and do the expected things
IBM PC ROMs dated 4/24/81 and 10/19/81 require that BH be the same as
the current active page
SeeAlso: AH=02h,AH=0Ah
----------100F-------------------------------
INT 10 - VIDEO - GET CURRENT VIDEO MODE
AH = 0Fh
Return: AH = number of character columns
AL = display mode (see AH=00h)
BH = active page (see AH=05h)
Notes: if mode was set with bit 7 set ("no blanking"), the returned mode will
also have bit 7 set
EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h
(monochrome) in all extended-row text modes
SeeAlso: AH=00h,AH=05h,AX=1130h,AX=CD04h
----------100F56BX4756-----------------------
INT 10 - VUIMAGE DISPLAY DRIVER (v2.20 and below)
AX = 0F56h
BX = 4756h
CX = 4944h
DL = function
01h installation check
Return: AX = 5649h
BX = 4443h
CX = 5647h
DH = 01h
02h get first video mode's parameters
Return: AX = BIOS mode number
BX = width in pixels
CX = height in pixels
DX = number of colors
03h get next video mode's parameters
Return: as for DL=02h
04h display line???
ES:DI -> record (see below)
???
Return: ???
Notes: VUIMAGE is a shareware GIF/TIFF image viewer by Offe Enterprises
the use of TSR display drivers was discontinued after v2.20
Format of record for DL=04h:
Offset Size Description
00h WORD row number
02h WORD starting column???
04h WORD ending column???
???
----------100F--SIF123-----------------------
INT 10 - FRIEZE v7.41+ - INSTALLATION CHECK
AH = 0Fh
SI = F123h
DI = 321Fh
Return: AH = number of character columns
AL = display mode (see AH=00h)
BH = active page (see AH=05h)
SI = DI = F345h if installed
Notes: if mode was set with bit 7 set ("no blanking"), the returned mode will
also have bit 7 set
EGA, VGA, and UltraVision return either AL=03h (color) or AL=07h
(monochrome) in all extended-row text modes
SeeAlso: AH=0Fh"VIDEO",AH=4Bh"FRIEZE"
----------1010-------------------------------
INT 10 - BIOS Window Extension v1.1 - SET WINDOW COORDINATES
AH = 10h
CH,CL = row,column of upper left corner of window
DH,DL = row,column of lower right corner of window
Return: AL = status
00h successful
01h failed
AH destroyed
Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal
Note: when a window has been set, all output via AH=0Eh is restricted to
the specified window
SeeAlso: AH=11h"Window",AH=12h"Window"
----------1010-------------------------------
INT 10 - VIDEO - Eagle PC2 BIOS Rev. C - SET SCROLL SPEED
AH = 10h
AL = speed
00h fast
01h slow (only moves characters during vertical retrace)
Return: AH = previous speed
----------101000----------------------------
INT 10 - VIDEO - SET SINGLE PALETTE REGISTER (PCjr,EGA,MCGA,VGA)
AX = 1000h
BL = palette register number (00h-0Fh)
= attribute register number (undocumented)
10h attribute mode control register (should let BIOS control this)
11h overscan color register (see also AX=1001h)
12h color plane enable register (bits 3-0 enable corresponding
text attribute bit)
13h horizontal PEL panning register
14h color select register
BH = color or attribute register value
Notes: on MCGA, only BX = 0712h is supported
under UltraVision, the palette locking status (see AX=CD01h)
determines the outcome
SeeAlso: AX=1002h,AX=1007h,AX=CD01h
----------101001-----------------------------
INT 10 - VIDEO - SET BORDER (OVERSCAN) COLOR (PCjr,EGA,VGA)
AX = 1001h
BH = border color (00h-3Fh)
BUG: the original IBM VGA BIOS incorrectly updates the parameter save area
and places the border color at offset 11h of the palette table
rather than offset 10h
Note: under UltraVision, the palette locking status (see AX=CD01h)
determines the outcome
SeeAlso: AX=1002h,AX=1008h,AX=CD01h
----------101002-----------------------------
INT 10 - VIDEO - SET ALL PALETTE REGISTERS (PCjr,EGA,VGA)
AX = 1002h
ES:DX -> palette register list
Note: under UltraVision, the palette locking status (see AX=CD01h)
determines the outcome
SeeAlso: AX=1000h,AX=1001h,AX=1009h,AX=CD01h
Format of palette register list:
Offset Size Description
00h 16 BYTEs colors for palette registers 00h through 0Fh
10h BYTE border color
----------101003-----------------------------
INT 10 - VIDEO - TOGGLE INTENSITY/BLINKING BIT (Jr, PS, TANDY 1000, EGA, VGA)
AX = 1003h
BL = new state
00h background intensity enabled
01h blink enabled
BH = 00h to avoid problems on some adapters
Notes: although there is no function to get the current status, bit 5 of
0040h:0065h indicates the state
when configured for a monochrome display, the Boca Research Multi-EGA
with ROM v M1.1 Type D has its screen disrupted if BH is not clear
SeeAlso: AH=08h
----------101007-----------------------------
INT 10 - VIDEO - GET INDIVIDUAL PALETTE REGISTER (VGA,UltraVision v2+)
AX = 1007h
BL = palette or attribute (undoc) register number (see AX=1000h)
Return: BH = palette or attribute register value
Note: UltraVision v2+ supports this function even on color EGA systems in
video modes 00h-03h, 10h, and 12h; direct programming of the palette
registers will cause incorrect results because the EGA registers are
write-only. To guard against older versions or unsupported video
modes, programs which expect to use this function on EGA systems
should set BH to FFh on entry.
SeeAlso: AX=1000h,AX=1009h
----------101008-----------------------------
INT 10 - VIDEO - READ OVERSCAN (BORDER COLOR) REGISTER (VGA,UltraVision v2+)
AX = 1008h
Return: BH = border color (00h-3Fh)
Note: UltraVision v2+ supports this function even on color EGA systems in
video modes 00h-03h, 10h, and 12h; direct programming of the palette
registers will cause incorrect results because the EGA registers are
write-only. To guard against older versions or unsupported video
modes, programs which expect to use this function on EGA systems
should set BH to FFh on entry.
SeeAlso: AX=1001h
----------101009-----------------------------
INT 10 - VIDEO - READ ALL PALETTE REGISTERS AND OVERSCAN REGISTER (VGA)
AX = 1009h
ES:DX -> 17-byte buffer (see AX=1002h)
Note: UltraVision v2+ supports this function even on color EGA systems in
video modes 00h-03h, 10h, and 12h; direct programming of the palette
registers will cause incorrect results because the EGA registers are
write-only. To guard against older versions or unsupported video
modes, programs which expect to use this function on EGA systems
should set the ES:DX buffer to FFh before calling.
SeeAlso: AX=1002h,AX=1007h,AX=CD02h
----------101010-----------------------------
INT 10 - VIDEO - SET INDIVIDUAL DAC REGISTER (VGA/MCGA)
AX = 1010h
BX = register number
CH = new value for green (0-63)
CL = new value for blue (0-63)
DH = new value for red (0-63)
SeeAlso: AX=1012h,AX=1015h
----------101012-----------------------------
INT 10 - VIDEO - SET BLOCK OF DAC REGISTERS (VGA/MCGA)
AX = 1012h
BX = starting color register
CX = number of registers to set
ES:DX -> table of 3*CX bytes where each 3 byte group represents one
byte each of red, green and blue (0-63)
SeeAlso: AX=1010h,AX=1017h
----------101013-----------------------------
INT 10 - VIDEO - SELECT VIDEO DAC COLOR PAGE (VGA)
AX = 1013h
BL = subfunction
00h select paging mode
BH = 00h select 4 blocks of 64
BH = 01h select 16 blocks of 16
01h select page
BH = page number (00h to 03h) or (00h to 0Fh)
Note: this function is not valid in mode 13h
SeeAlso: AX=101Ah
----------101015-----------------------------
INT 10 - VIDEO - READ INDIVIDUAL DAC REGISTER (VGA/MCGA)
AX = 1015h
BL = palette register number
Return: DH = red value
CH = green value
CL = blue value
SeeAlso: AX=1010h,AX=1017h
----------101017-----------------------------
INT 10 - VIDEO - READ BLOCK OF DAC REGISTERS (VGA/MCGA)
AX = 1017h
BX = starting palette register
CX = number of palette registers to read
ES:DX -> buffer (3 * CX bytes in size) (see also AX=1012h)
Return: buffer filled with CX red, green and blue triples
SeeAlso: AX=1012h,AX=1015h
----------101018-----------------------------
INT 10 U - VIDEO - SET PEL MASK (VGA/MCGA)
AX = 1018h
BL = new PEL value
SeeAlso: AX=1019h
----------101019-----------------------------
INT 10 U - VIDEO - READ PEL MASK (VGA/MCGA)
AX = 1019h
Return: BL = value read
SeeAlso: AX=1018h
----------10101A-----------------------------
INT 10 - VIDEO - GET VIDEO DAC COLOR-PAGE STATE (VGA)
AX = 101Ah
Return: BL = paging mode
00h four pages of 64
01h sixteen pages of 16
BH = current page
SeeAlso: AX=1013h
----------10101B-----------------------------
INT 10 - VIDEO - PERFORM GRAY-SCALE SUMMING (VGA/MCGA)
AX = 101Bh
BX = starting palette register
CX = number of registers to convert
SeeAlso: AH=12h/BL=33h
----------1010E0-----------------------------
INT 10 - VIDEO - Diamond Speedstar 24 - SET 24-BIT GRAPHICS MODE
AX = 10E0h
BL = video mode (see also AH=00h)
2Eh = 640x480
Return: ???
SeeAlso: AH=00h,AX=10F0h
----------1010F0-----------------------------
INT 10 - VIDEO - Tseng ET-4000 BIOS - SET HiColor GRAPHICS MODE
AX = 10F0h
BL = video mode (see also AH=00h)
32768-color modes:
13h = 320x200
2Dh = 640x350
2Eh = 640x480
2Fh = 640x400
30h = 800x600
16M-color modes:
3Eh = 640x480 (Genoa 7900)
Return: AL = 10h if supported
AH = status
00h if successful
other on error
Note: the Tseng HiColor BIOS extensions are supported by:
Diamond Computer Systems SpeedStar HiColor VGA
Everex Systems HC VGA
Focus Information Systems 2theMax 4000
Cardinal Technologies VGA732
Orchid ProDesigner IIs Genoa 7900
SeeAlso: AH=00h,AX=10E0h,AX=10F1h,AX=10F2h
----------1010F1-----------------------------
INT 10 - VIDEO - Tseng ET-4000 BIOS - GET DAC TYPE
AX = 10F1h
Return: AL = 10h if supported
BL = type of digital/analog converter
00h normal VGA DAC
01h Sierra SC1148x HiColor DAC
02h new Sierra DAC
else other HiColor DAC
SeeAlso: AX=10F0h,AX=10F2h
----------1010F2-----------------------------
INT 10 U - VIDEO - Tseng ET-4000 BIOS v3.00 - ???
AX = 10F2h
BL = ???
Return: AL = 10h if supported
AH = status???
00h ???
01h ???
BL = ???
SeeAlso: AX=10F0h,AX=10F1h
----------1011-------------------------------
INT 10 - BIOS Window Extension v1.1 - GET WINDOW COORDINATES
AH = 11h
Return: CH,CL = row,column of upper left corner
DH,DL = row,column of lower right corner
Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal
SeeAlso: AH=10h"Window",AH=12h"Window"
----------1011-------------------------------
INT 10 - VIDEO - TEXT-MODE CHARACTER GENERATOR FUNCTIONS (PS, EGA, VGA)
AH = 11h
The following functions will cause a mode set, completely resetting
the video environment, but without clearing the video buffer
AL = 00h, 10h: load user-specified patterns
ES:BP -> user table
CX = count of patterns to store
DX = character offset into map 2 block
BL = block to load in map 2
BH = number of bytes per character pattern
AL = 01h, 11h: load ROM monochrome patterns (8 by 14)
BL = block to load
AL = 02h, 12h: load ROM 8 by 8 double-dot patterns
BL = block to load
AL = 03h: set block specifier
BL = block specifier
(EGA/MCGA) bits 0,1 = block selected by chars with attribute
bit 3 = 0
bits 2,3 = block selected by chars with attribute
bit 3 = 1
(VGA) bits 0,1,4 = block selected by attribute bit 3 = 0
bits 2,3,5 = block selected by attribute bit 3 = 1
AL = 04h, 14h: load ROM 8x16 character set (VGA)
BL = block to load
Note: The routines called with AL=1xh are designed to be called only
immediately after a mode set and are similar to the routines called
with AL=0xh, except that:
Page 0 must be active.
Bytes/character is recalculated.
Max character rows is recalculated.
CRT buffer length is recalculated.
CRTC registers are reprogrammed as follows:
R09 = bytes/char-1 ; max scan line (mode 7 only)
R0A = bytes/char-2 ; cursor start
R0B = 0 ; cursor end
R12 = ((rows+1)*(bytes/char))-1 ; vertical display end
R14 = bytes/char ; underline loc
(*** BUG: should be 1 less ***)
SeeAlso: AX=CD10h
----------1011-------------------------------
INT 10 - VIDEO - GRAPHICS-MODE CHARACTER GENERATOR FUNCTIONS (PS, EGA, VGA)
AH = 11h
AL = 20h: set user 8 by 8 graphics characters (INT 1F)
ES:BP -> user table
AL = 21h: set user graphics characters
ES:BP -> user table
CX = bytes per character
BL = row specifier
00h user set
DL = number of rows
01h 14 rows
02h 25 rows
03h 43 rows
AL = 22h: ROM 8 by 14 set
BL = row specifier (see above)
AL = 23h: ROM 8 by 8 double dot
BL = row specifier (see above)
AL = 24h: load 8x16 graphics characters (VGA/MCGA)
BL = row specifier (see above)
AL = 29h: load 8x16 graphics characters (Compaq Systempro)
BL = row specifier (see above)
Notes: these functions are meant to be called only after a mode set
UltraVision v2+ sets INT 43 to the appropriate font for AL=22h,23h,24h,
and 29h
SeeAlso: INT 1F, INT 43
----------101130-----------------------------
INT 10 - VIDEO - GET FONT INFORMATION (EGA, MCGA, VGA)
AX = 1130h
BH = pointer specifier
00h INT 1Fh pointer
01h INT 43h pointer
02h ROM 8x14 character font pointer
03h ROM 8x8 double dot font pointer
04h ROM 8x8 double dot font (high 128 characters)
05h ROM alpha alternate (9 by 14) pointer (EGA,VGA)
06h ROM 8x16 font (MCGA, VGA)
07h ROM alternate 9x16 font (VGA only)
11h (UltraVision v2+) 8x20 font (VGA) or 8x19 font (autosync EGA)
12h (UltraVision v2+) 8x10 font (VGA) or 8x11 font (autosync EGA)
Return: ES:BP = specified pointer
CX = bytes/character of on-screen font (not the requested font!)
DL = character rows on screen - 1 (VGA)
= character rows on screen (EGA)
Note: for UltraVision v2+, the 9xN alternate fonts follow the corresponding
8xN font at ES:BP+256N
SeeAlso: AX=1100h,AX=1120h,INT 1F,INT 43
----------1012-------------------------------
INT 10 - BIOS Window Extension v1.1 - GET BLANKING ATTRIBUTE
AH = 12h
Return: BH = attribute to use on blanked lines when scrolling
Program: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal
SeeAlso: AH=11h"Window",AH=12h"Window"
----------1012--BL10-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS, EGA, VGA, MCGA) - GET EGA INFO
AH = 12h
BL = 10h
Return: BH = 00h color mode in effect (I/O port 3Dxh)
01h mono mode in effect (I/O port 3Bxh)
BL = 00h 64k bytes memory installed
01h 128k bytes memory installed
02h 192k bytes memory installed
03h 256k bytes memory installed
CH = feature bits
CL = switch settings
Note: one possible check for the presence of an EGA or later display card
is to call this function with BH=FFh; if not present, BH will be
unchanged on return
----------1012--BL20-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS,EGA,VGA,MCGA) - ALTERNATE PRTSC
AH = 12h
BL = 20h select alternate print screen routine
Notes: installs a PrtSc routine from the video card's BIOS to replace the
default PrtSc handler from the ROM BIOS, which usually does not
understand screen heights other than 25 lines
some adapters disable print-screen instead of enhancing it
SeeAlso: INT 05
----------1012--BL2E-------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 12h
BL = 2Eh
Note: due to an omitted end-of-list marker, this version of the BIOS will
crash the system on this function
----------1012--BL30-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - SELECT VERTICAL RESOLUTION
AH = 12h
BL = 30h
AL = vertical resolution
00h 200 scan lines
01h 350 scan lines
02h 400 scan lines
Return: AL = 12h if function supported
----------1012--BL31-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - PALETTE LOADING
AH = 12h
BL = 31h
AL = 00h enable default palette loading
01h disable default palette loading
Return: AL = 12h if function supported
----------1012--BL32-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - VIDEO ADDRESSING
AH = 12h
BL = 32h
AL = 00h enable video addressing
01h disable video addressing
Return: AL = 12h if function supported
----------1012--BL33-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA, MCGA) - GRAY-SCALE SUMMING
AH = 12h
BL = 33h
AL = 00h enable gray scale summing
01h disable gray scale summing
Return: AL = 12h if function supported
SeeAlso: AX=101Bh,AX=BF06h
----------1012--BL34-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (VGA) - CURSOR EMULATION
AH = 12h
BL = 34h
AL = 00h enable alphanumeric cursor emulation
01h disable alphanumeric cursor emulation
Return: AL = 12h if function supported
----------1012--BL35-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS) - DISPLAY-SWITCH INTERFACE
AH = 12h
BL = 35h
AL = 00h initial adapter video off
01h initial planar video on
02h switch active video off
03h switch inactive video on
80h *UNDOCUMENTED* set system board video active flag
ES:DX -> buffer (128 byte save area if AL = 0, 2 or 3)
Return: AL = 12h if function supported
----------1012--BL36-------------------------
INT 10 - VIDEO - ALTERNATE FUNCTION SELECT (PS, VGA) - VIDEO REFRESH CONTROL
AH = 12h
BL = 36h
AL = 00h enable refresh
01h disable refresh
Return: AL = 12h if function supported
----------1012--BH55-------------------------
INT 10 - VIDEO - ALTERNATE FUNC SELECT (ATI,Tatung,Taxan) - ENHANCED FEATURES
AH = 12h
BH = 55h
BL = subfunction
00h disabled enhanced features
01h enable enhanced features
02h get status
Return: AL = status flags
bit 3: set if enhanced features enabled
bits 7-5 monitor type
000 PS/2 mono
001 PS/2 color
010 multi-sync
011 Taxan 650 25kHz
100 RGB
101 mono
110 EGA
111 Compaq internal
03h disable register trapping (CGA emulation)
04h enable register trapping
05h program mode described by table at ES:BP
06h get mode table
AL = video mode
Return: ES:BP -> table suitable for mode AL (and subfnc BL=05h)
BP = FFFFh on error
Format of ATI VGA Wonder video mode table:
Offset Size Description
00h BYTE number of columns
01h BYTE maximum row (number of rows - 1)
02h BYTE scan lines per row
03h WORD video buffer size in bytes
05h 4 BYTEs values for Sequencer registers 1-4
09h BYTE value for Miscellaneous Output register
0Ah 25 BYTEs values for CRTC registers 00h-18h
00h horizontal total size (chars)
01h horizontal displayed (chars)
02h horizontal sync position (chars)
03h horizontal sync width (chars)
04h vertical total size (char rows)
05h vertical total adjust (scan lines)
06h vertical displayed (char rows)
07h vertical sync position (char rows)
08h interlace mode
09h max scan line in row
0Ah cursor start scan line
0Bh cursor end scan line
0Ch screen memory start (high)
0Dh screen memory start (low)
0Eh cursor address (high)
0Fh cursor address (low)
10h light pen (high)
11h light pen (low)
23h 20 BYTEs default palette (values for Attribute Controller regs 00h-13h)
37h 9 BYTEs values for Graphics Controller registers 00h-08h
----------1012--BL74-------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 12h
BL = 74h
Note: due to an omitted end-of-list marker, this version of the BIOS will
crash the system on this function
----------1012--BL80-------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 12h
BL = 80h
Note: due to an omitted end-of-list marker, this version of the BIOS will
crash the system on this function
----------1012--BLBE-------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 12h
BL = BEh
Note: due to an omitted end-of-list marker, this version of the BIOS will
crash the system on this function
----------1012--BLC6-------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 12h
BL = C6h
Note: due to an omitted end-of-list marker, this version of the BIOS will
crash the system on this function
----------1012--BLF0-------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 12h
BL = F0h
Note: due to an omitted end-of-list marker, this version of the BIOS will
crash the system on this function
----------1013-------------------------------
INT 10 - VIDEO - WRITE STRING (AT and later,EGA)
AH = 13h
AL = write mode
bit 0: update cursor after writing
1: string contains alternating characters and attributes
BH = page number
BL = attribute if string contains only characters
CX = number of characters in string
DH,DL = row,column at which to start writing
ES:BP -> string to write
Notes: recognizes CR, LF, BS, and bell
also available PC or XT with EGA or higher
HP 95LX only supports write mode 00h
BUG: on the IBM VGA Adapter, any scrolling which may occur is performed on
the active page rather than the requested page
SeeAlso: AH=09h,AH=0Ah
----------101400-----------------------------
INT 10 - VIDEO - LOAD USER-SPECIFIED LCD CHARACTER FONT (CONV,Compaq Port 386)
AX = 1400h
ES:DI -> character font
BH = number of bytes per character
08h or 10h (Compaq)
BL = 00h load main font (block 0)
01h load alternate font (block 1)
CX = number of characters to store
DX = character offset into RAM font area
SeeAlso: AH=11h,AX=1401h
----------101401-----------------------------
INT 10 - VIDEO - LOAD SYSTEM ROM DEFAULT LCD CHARACTER FONT (CONV,CP386)
AX = 1401h
BL = font to load
00h main font (block 0)
01h alternate font (block 1)
SeeAlso: AH=11h,AX=1400h
----------101402-----------------------------
INT 10 - VIDEO - SET MAPPING OF LCD HIGH INTENSITY ATTRIBUTES (CONV,CP386)
AX = 1402h
BL = function
00h ignore high intensity attribute
01h map high intensity to underscore
02h map high intensity to reverse video
03h map high intensity to selected alternate font
B0h half intensity (Compaq)
B1h toggle active intensity bit interpretation (CP386)
----------1015-------------------------------
INT 10 - VIDEO - GET PHYSICAL DISPLAY PARAMETERS (CONVERTIBLE)
AH = 15h
Return: AX = alternate display adapter type
0000h none
5140h LCD
5153h CGA
5151h mono
ES:DI -> parameter table (see below)
SeeAlso: AH=1Bh
Format of display parameter table:
Offset Size Description
00h WORD monitor model number
02h WORD vertical pixels per meter
04h WORD horizontal pixels per meter
06h WORD total vertical pixels
08h WORD total horizontal pixels
0Ah WORD horizontal pixel separation in micrometers
0Ch WORD vertical pixel separation in micrometers
----------1015-------------------------------
INT 10 - VIDEO - SET SUPERIMPOSE MODE (Sperry PC)
AH = 15h
AL = superimpose mode
00h show graphics screen
01h show text screen
02h show text screen superimposed on graphics screen
----------101A-------------------------------
INT 10 - VIDEO - DISPLAY COMBINATION (PS,VGA/MCGA)
AH = 1Ah
AL = 00h read display combination code
Return: BL = active display code (see below)
BH = alternate display code
01h set display combination code
BL = active display code (see below)
BH = alternate display code
Return: AL = 1Ah if function was supported
Values for display combination code:
00h no display
01h monochrome adapter w/ monochrome display
02h CGA w/ color display
03h reserved
04h EGA w/ color display
05h EGA w/ monochrome display
06h PGA w/ color display
07h VGA w/ monochrome analog display
08h VGA w/ color analog display
09h reserved
0Ah MCGA w/ digital color display
0Bh MCGA w/ monochrome analog display
0Ch MCGA w/ color analog display
FFh unknown display type
----------101B-------------------------------
INT 10 - VIDEO - FUNCTIONALITY/STATE INFORMATION (PS,VGA/MCGA)
AH = 1Bh
BX = implementation type
0000h return funtionality/state information
ES:DI -> 64 byte buffer for state information (see below)
Return: AL = 1Bh if function supported
ES:DI buffer filled with state information
SeeAlso: AH=15h
Format of state information:
Offset Size Description
00h DWORD address of static funtionality table (see below)
04h BYTE video mode in effect
05h WORD number of columns
07h WORD length of regen buffer in bytes
09h WORD starting address of regen buffer
0Bh WORD cursor position for page 0
0Dh WORD cursor position for page 1
0Fh WORD cursor position for page 2
11h WORD cursor position for page 3
13h WORD cursor position for page 4
15h WORD cursor position for page 5
17h WORD cursor position for page 6
19h WORD cursor position for page 7
1Bh WORD cursor type
1Dh BYTE active display page
1Eh WORD CRTC port address
20h BYTE current setting of register (3?8)
21h BYTE current setting of register (3?9)
22h BYTE number of rows
23h WORD bytes/character
25h BYTE display combination code of active display
26h BYTE DCC of alternate display
27h WORD number of colors supported in current mode
29h BYTE number of pages supported in current mode
2Ah BYTE number of scan lines active
(0,1,2,3) = (200,350,400,480)
2Bh BYTE primary character block
2Ch BYTE secondary character block
2Dh BYTE miscellaneous flags
bit 0 all modes on all displays on
1 gray summing on
2 monochrome display attached
3 default palette loading disabled
4 cursor emulation enabled
5 0 = intensity; 1 = blinking
6 PS/2 P70 plasma display (without 9-dot wide font) active
7 reserved
2Eh 3 BYTEs reserved (00h)
31h BYTE video memory available
00h = 64K, 01h = 128K, 02h = 192K, 03h = 256K
32h BYTE save pointer state flags
bit 0 512 character set active
1 dynamic save area present
2 alpha font override active
3 graphics font override active
4 palette override active
5 DCC override active
6 reserved
7 reserved
33h 13 BYTEs reserved (00h)
Format of Static Functionality Table:
Offset Size Description
00h BYTE modes supported #1
bit 0 to bit 7 = 1 modes 0,1,2,3,4,5,6 supported
01h BYTE modes supported #2
bit 0 to bit 7 = 1 modes 8,9,0Ah,0Bh,0Ch,0Dh,0Eh,0Fh supported
02h BYTE modes supported #3
bit 0 to bit 3 = 1 modes 10h,11h,12h,13h supported
bit 4 to bit 7 reserved
03h 4 BYTEs reserved
07h BYTE scan lines supported
bit 0 to bit 2 = 1 if scan lines 200,350,400 supported
08h BYTE total number of character blocks available in text modes
09h BYTE maximum number of active character blocks in text modes
0Ah BYTE miscellaneous function flags #1
bit 0 all modes on all displays function supported
1 gray summing function supported
2 character font loading function supported
3 default palette loading enable/disable supported
4 cursor emulation function supported
5 EGA palette present
6 color palette present
7 color paging function supported
0Bh BYTE miscellaneous function flags #2
bit 0 light pen supported
1 save/restore state function 1Ch supported
2 intensity blinking function supported
3 Display Combination Code supported
4-7 reserved
0Ch WORD reserved
0Eh BYTE save pointer function flags
bit 0 512 character set supported
1 dynamic save area supported
2 alpha font override supported
3 graphics font override supported
4 palette override supported
5 DCC extension supported
6 reserved
7 reserved
0Fh BYTE reserved
----------101C-------------------------------
INT 10 - VIDEO - SAVE/RESTORE VIDEO STATE (PS50+,VGA)
AH = 1Ch
AL = 00h return state buffer size
Return: BX = number of 64-byte blocks needed
01h save video state
ES:BX -> buffer
02h restore video state
ES:BX -> buffer containing previously saved state
CX = requested states
bit 0 video hardware
1 BIOS data areas
2 color registers and DAC state
3-15 reserved
Return: AL = 1Ch if function supported
Notes: many BIOSes corrupt the video registers when saving the state, so a
program should restore the state immediately after saving it (the
saved data is uncorrupted)
the BIOS data area consists of the 96 bytes from 0040h:0049h-00A8h
Format of video hardware state:
Offset Size Description
00h BYTE sequencer index register
01h BYTE CRTC index register
02h BYTE graphics controller index register
03h BYTE attribute controller index register
04h BYTE feature controller register
05h 4 BYTEs sequencer registers
09h BYTE sequencer register 0
0Ah 25 BYTEs CRTC registers 0-8
23h 16 BYTEs palette registers 00h-0Fh
33h 4 BYTEs attribute registers 10h-13h
37h 9 BYTEs graphics controller registers 0-8
40h BYTE CRTC base address (low)
41h BYTE CRTC base address (high)
42h BYTE plane 0 latch
43h BYTE plane 1 latch
44h BYTE plane 2 latch
45h BYTE plane 3 latch
Format of DAC state:
Offset Size Description
00h BYTE read/write mode DAC
01h BYTE pixel address
02h BYTE pixel mask
03h 768 BYTEs color data (256 triples)
303h BYTE color select register
----------101D-------------------------------
INT 10 - Tseng ET-4000 BIOS v3.00 - BUG
AH = 1Dh
Note: this version of the BIOS jumps to a random location on this function
due to a fencepost error
----------103000CX0000-----------------------
INT 10 - VIDEO - LOCATE 3270PC CONFIGURATION TABLE (INSTALLATION CHECK)
AX = 3000h
CX = 0000h
DX = 0000h
Return: CX:DX -> 3270PC configuration table (see below)
CX:DX = 0000h:0000h if 3270PC Control Program not active
Format of 3270 PC configuration table:
Offset Size Description
00h BYTE aspect ratio X
01h BYTE aspect ratio Y
02h BYTE monitor type
00h = 5151 (mono) or 5272 (color)
01h = 3295
02h = 5151 or 5272 with XGA (???) graphics adapter
03h = 5279 with 3270PC G adapter
04h = 5379 model C01 with 3270PC GX adapter
05h = 5379 model M01 with 3270PC GX adapter
07h = non-3270PC with 3270 Workstation Program
FFh = 3270PC Control Program not loaded
03h BYTE reserved
04h BYTE adapter ID
00h = 5151/5272 adapter
04h = 5151/5272 with XGA adapter
30h = 3295 or 3270PC G/GX adapter
05h BYTE reserved
06h BYTE function flags 1
bit 7: mono text, 1 page
6: color text, 1 page
5: color text, 4 pages
4: CGA color graphics
3: 720x350 two-color graphics
2: 360x350 four-color graphics
1: 720x350 eight-color graphics
07h BYTE function flags 2
bit 6: GPI graphics supported
08h WORD segment address of Control Program Level table (see below)
0Ah 10 BYTEs reserved
Format of Control Program Level table:
Offset Size Description
00h WORD program version
02xxh = 3270PC Control Program v2.xx
03xxh = 3270PC Control Program v3.xx
04xxh = 3270 Workstation Program v1.xx
02h BYTE Control Program ID (00h)
03h 27 BYTEs Control Program Descriptor ("IBM 3270 PC CONTROL PROGRAM")
----------1038-------------------------------
INT 10 - Tinytalk Personal v1.09f - GET CONFIGURATION INFO
AH = 38h
Return: ES:DI -> configuration info (see below)
Notes: Tinytalk is a shareware screen reader by OMS Development/Eric Bohlman
this call is also used as the installation check by verifying that the
returned ES:DI points at valid configuration info
SeeAlso: INT 14/AX=F0F1h,INT 2F/FB00h"AutoBraille"
Format of configuration info:
Offset Size Description
00h 8 BYTEs signature "TTCONFIG"
08h WORD size of configuration data, not counting signature, this WORD,
or the following byte
0Ah BYTE ???
0Bh ??? configuration data
----------1040-------------------------------
INT 10 - VIDEO - SET GRAPHICS MODE (Hercules GRAFIX)
AH = 40h
SeeAlso: AH=00h,AH=41h
----------1041-------------------------------
INT 10 - VIDEO - SET TEXT MODE (Hercules GRAFIX)
AH = 41h
SeeAlso: AH=00h,AH=40h
----------1042-------------------------------
INT 10 - VIDEO - CLEAR CURRENT PAGE (Hercules GRAFIX)
AH = 42h
SeeAlso: AH=45h
----------1043-------------------------------
INT 10 - VIDEO - SELECT DRAWING PAGE (Hercules GRAFIX)
AH = 43h
AL = page number (0,1)
SeeAlso: AH=05h,AH=44h,AH=45h
----------1044-------------------------------
INT 10 - VIDEO - SELECT DRAWING FUNCTION (Hercules GRAFIX)
AH = 44h
AL = drawing function
00h clear pixels
01h set pixels
02h invert pixels
SeeAlso: AH=45h,AH=46h,AH=4Ch,AH=4Dh
----------1045-------------------------------
INT 10 - VIDEO - SELECT PAGE TO DISPLAY (Hercules GRAFIX)
AH = 45h
AL = page number (0,1)
SeeAlso: AH=05h,AH=42h,AH=43h
----------1046-------------------------------
INT 10 - VIDEO - DRAW ONE PIXEL (Hercules GRAFIX)
AH = 46h
DI = x (0-720)
BP = y (0-347)
Note: function 44h determines operation and function 43h which page to use
SeeAlso: AH=0Ch,AH=47h,AH=49h,AH=4Ch,AH=4Dh
----------1047-------------------------------
INT 10 - VIDEO - FIND PIXEL VALUE (Hercules GRAFIX)
AH = 47h
DI = x (0-720)
BP = y (0-347)
Return: AL = 00h pixel clear
AL = 01h pixel set
Note: function 43h specifies which page is used
SeeAlso: AH=0Dh,AH=46h
----------1048-------------------------------
INT 10 - VIDEO - MOVE TO POINT (Hercules GRAFIX)
AH = 48h
DI = x (0-720)
BP = y (0-347)
SeeAlso: AH=49h
----------1049-------------------------------
INT 10 - VIDEO - DRAW TO POINT (Hercules GRAFIX)
AH = 49h
DI = x (0-720)
BP = y (0-347)
Note: function 48h or 49h specify first point, 44h operation and 43h page to
use
SeeAlso: AH=43h,AH=44h,AH=48h,AH=4Ch,AH=4Dh
----------104A-------------------------------
INT 10 - VIDEO - BLOCK FILL (Hercules GRAFIX)
AH = 4Ah
DI = x coordinate of lower left corner
BP = y coordinate of lower left corner
BX = height in pixels
CX = width in pixels
Note: draws a solid rectangle
SeeAlso: AH=4Eh
----------104B-------------------------------
INT 10 - VIDEO - DISPLAY CHARACTER (Hercules GRAFIX)
AH = 4Bh
AL = character to display
DI = x (0-720)
BP = y (0-347)
Note: unlike the other BIOS character functions character position is
specified in pixels rather than rows and columns
SeeAlso: AH=09h,AH=0Ah
----------104B-------------------------------
INT 10 - FRIEZE v7.0+ - API
AH = 4Bh
CL = function
00h reserved
01h load window
ES:BX -> ASCIZ filename from which to read
02h save window
ES:BX -> ASCIZ filename to which to write
03h (v7.41) set ???
AL = ???
04h (v7.41) set ???
AL = ???
06h (v7.41) ???
AL = ???
07h set window size
ES:BX -> four-WORD structure with Xmin, Ymin, Xmax, Ymax
09h set patterns
ES:BX -> 16-BYTE vector of screen->printer color correspondnces
0Ah get patterns
ES:BX -> 16-BYTE buffer for color correspondences
0Bh set mode
AL = mode
0Ch (v7.41) ???
AL = ???
00h ??? (calls original INT 05)
else ???
0Dh (v7.41) ???
AL = ???
00h ??? (calls original INT 05)
else ???
0Eh (v7.41) ???
???
0Fh get window
ES:BX -> four-WORD buffer for Xmin, Ymin, Xmax, Ymax
10h set print options
ES:BX -> printer options in same format as FRIEZE cmdline
11h (v7.41) ???
???
12h (v7.41) ???
???
13h (v7.41) ???
???
14h get version
Return: AH = major version (00h if FRIEZE version before 7)
AL = minor version
15h set parameters
ES:BX -> parameter table (see below)
16h get parameters
ES:BX -> buffer for parameter table (see below)
17h get printer resolution
ES:BX -> 12-WORD table for six horizontal/vertical resol pairs
18h reserved (v8.0 only)
50h (v7.41) get ???
Return: AX = ???
51h (v7.41) get ???
Return: ES = ??? (seen 2348h)
AX = ??? (seen 8432h)
Return: AX = status
00h successful
01h user aborted printout with ESC
02h reserved
03h file read error
04h file write error
05h file not found
06h invalid header (not an image or wrong screen mode)
07h file close error
08h disk error
09h printer error
0Ah invalid function
0Bh can't create file
0Ch wrong video mode
SeeAlso: AH=0Fh/SI=F123h
Format of parameter table:
Offset Size Description
00h WORD top margin (1/100 inch)
02h WORD left margin (1/100 inch)
04h WORD horizontal size (1/100 inch)
06h WORD vertical size (1/100 inch)
08h WORD quality/draft mode
00h draft mode
01h quality mode
02h use horizontal/vertical resolution for output resolution
0Ah WORD printer horizontal resolution (dots per inch)
0Ch WORD printer vertical resolution (dots per inch)
0Eh WORD reserved (FFFFh)
Note: any field which should remain unchanged may be filled with FFFFh
----------104C-------------------------------
INT 10 - VIDEO - DRAW ARC (Hercules GRAFIX)
AH = 4Ch
AL = quadrant (1 = upper right, 2 = upper left, etc)
DI = x coordinate of center
BP = y coordinate of center
BX = radius
SeeAlso: AH=49h,AH=4Dh
----------104D-------------------------------
INT 10 - VIDEO - DRAW CIRCLE (Hercules GRAFIX)
AH = 4Dh
DI = x of center
BP = y of center
BX = radius
SeeAlso: AH=49h,AH=4Ch
----------104E-------------------------------
INT 10 - VIDEO - FILL AREA (Hercules GRAFIX)
AH = 4Eh
DI = x coordinate of an interior point
BP = y coordinate of an interior point
Notes: fills convex polygonal areas
the first fill makes the figure solid, the second erases it
SeeAlso: AH=4Ah
----------104F00-----------------------------
INT 10 - VESA SuperVGA BIOS - GET SuperVGA INFORMATION
AX = 4F00h
ES:DI -> 256-byte buffer for SuperVGA information (see below)
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
SeeAlso: AX=4F01h,AX=7F00h
Format of SuperVGA information:
Offset Size Description
00h 4 BYTEs signature ('VESA')
04h WORD VESA version number
06h DWORD pointer to OEM name
"761295520" for ATI
0Ah 4 BYTEs capabilities
0Eh DWORD pointer to list of supported VESA and OEM video modes
(list of words terminated with FFFFh)
12h 238 BYTEs reserved
----------104F01-----------------------------
INT 10 - VESA SuperVGA BIOS - GET SuperVGA MODE INFORMATION
AX = 4F01h
CX = SuperVGA video mode
ES:DI -> 256-byte buffer mode information (see below)
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
SeeAlso: AX=4F00h,AX=4F02h
Format of mode information:
Offset Size Description
00h WORD mode attributes
bit 0: mode supported
bit 1: optional information available
bit 2: BIOS output supported
bit 3: set if color, clear if monochrome
bit 4: set if graphics mode, clear if text mode
02h BYTE window A attributes
bit 0: exists
bit 1: readable
bit 2: writable
bits 3-7 reserved
03h BYTE window B attributes (as for window A)
04h WORD window granularity in K
06h WORD window size in K
08h WORD start segment of window A
0Ah WORD start segment of window B
0Ch DWORD -> FAR window positioning function (equivalent to AX=4F05h)
10h WORD bytes per scan line
---remainder is optional for VESA modes in v1.0/1.1, needed for OEM modes---
12h WORD width in pixels
14h WORD height in pixels
16h BYTE width of character cell in pixels
17h BYTE height of character cell in pixels
18h BYTE number of memory planes
19h BYTE number of bits per pixel
1Ah BYTE number of banks
1Bh BYTE memory model type
00h text
01h CGA graphics
02h HGC graphics
03h 16-color (EGA) graphics
04h packed pixel graphics
05h "sequ 256" (non-chain 4) graphics
06h direct color (HiColor, 24-bit color)
07h YUV
08h-0Fh reserved for VESA
10h-FFh OEM memory models
1Ch BYTE size of bank in K
1Dh BYTE number of image pages
1Eh BYTE reserved (0)
---VBE v1.2+---
1Fh BYTE red mask size
20h BYTE red field position
21h BYTE green mask size
22h BYTE green field size
23h BYTE blue mask size
24h BYTE blue field size
25h BYTE reserved mask size
26h BYTE reserved mask position
27h BYTE direct color mode info
28h BYTE reserved (0)
----------104F02-----------------------------
INT 10 - VESA SuperVGA BIOS - SET SuperVGA VIDEO MODE
AX = 4F02h
BX = mode
bit 15 set means don't clear video memory
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
SeeAlso: AX=4F01h,AX=4F03h
Values for VESA video mode:
00h-FFh OEM video modes (see AH=00h)
100h 640x400x256
101h 640x480x256
102h 800x600x16
103h 800x600x256
104h 1024x768x16
105h 1024x768x256
106h 1280x1024x16
107h 1280x1024x256
108h 80x60 text
109h 132x25 text
10Ah 132x43 text
10Bh 132x50 text
10Ch 132x60 text
---VBE v1.2---
10Dh 320x200x32K
10Eh 320x200x64K
10Fh 320x200x16M
110h 640x480x32K
111h 640x480x64K
112h 640x480x16M
113h 800x600x32K
114h 800x600x64K
115h 800x600x16M
116h 1024x768x32K
117h 1024x768x64K
118h 1024x768x16M
119h 1280x1024x32K
11Ah 1280x1024x64K
11Bh 1280x1024x16M
Values for S3 OEM video mode:
201h 640x480x256
202h 800x600x16
203h 800x600x256
204h 1024x768x16
205h 1024x768x256
206h 1280x960x16
208h 1280x1024x16
301h 640x480x32K
----------104F03-----------------------------
INT 10 - VESA SuperVGA BIOS - GET CURRENT VIDEO MODE
AX = 4F03h
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
BX = video mode (see AX=4F02h)
SeeAlso: AX=4F02h
----------104F04-----------------------------
INT 10 - VESA SuperVGA BIOS - SAVE/RESTORE SuperVGA VIDEO STATE
AX = 4F04h
DL = subfunction
00h get state buffer size
Return: BX = number of 64-byte blocks needed
01h save video states
ES:BX -> buffer
02h restore video states
ES:BX -> buffer
CX = flags for states to save/restore
bit 0: video hardware state
bit 1: video BIOS data state
bit 2: video DAC state
bit 3: SuperVGA state
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
----------104F05-----------------------------
INT 10 - VESA SuperVGA BIOS - CPU VIDEO MEMORY CONTROL
AX = 4F05h
BH = subfunction
00h select video memory window
DX = window address in video memory (in granularity units)
01h get video memory window
Return: DX = window address in video memory (in gran. units)
BL = window number
00h window A
01h window B
Return: AL = 4Fh function supported
AH = status
00h successful
01h failed
SeeAlso: AX=4F01h,AX=4F06h,AX=4F07h,AX=7000h/BX=0004h
----------104F06-----------------------------
INT 10 - VESA SuperVGA BIOS v1.1 - GET/SET LOGICAL SCAN LINE LENGTH
AX = 4F06h
BL = function
00h set scan line length
CX = desired width in pixels
01h get scan line length
Return: AL = 4Fh if function supported
AH = status
00h successful
01h failed
BX = bytes per scan line
CX = number of pixels per scan line
DX = maximum number of scan lines
Notes: if the desired width is not achievable, the next larger width will be
set
the scan line may be wider than the visible area of the screen
this function is valid in text modes, provided that values are
multiplied by the character cell width/height
SeeAlso: AX=4F01h,AX=4F05h,AX=4F07h
----------104F07BH00-------------------------
INT 10 - VESA SuperVGA BIOS v1.1 - GET/SET DISPLAY START
AX = 4F07h
BH = 00h (reserved)
BL = 00h set display start
CX = leftmost displayed pixel in scan line
DX = first displayed scan line
= 01h get display start
Return: BH = 00h
CX = leftmost displayed pixel in scan line
DX = first displayed scan line
Return: AL = 4Fh if function supported
AH = status
00h successful
01h failed
Note: this function is valid in text modes, provided that values are
multiplied by the character cell width/height
SeeAlso: AX=4F01h,AX=4F05h,AX=4F06h
----------104F08-----------------------------
INT 10 - VESA SuperVGA BIOS v1.2+ - GET/SET DAC PALETTE CONTROL
AX = 4F08h
BL = function
00h set DAC palette width
BH = desired number of bits per primary color
01h get DAC palette width
Return: AL = 4Fh if function supported
AH = status
BH = current number of bits per primary (06h = standard VGA)
----------104FFF-----------------------------
INT 10 - VESA SuperVGA BIOS - Everex - TURN VESA ON/OFF
AX = 4FFFh
DL = new state (00h off, 01h on)
Return: AX = 0000h if successful
----------1050-------------------------------
INT 10 - SCROLOCK.COM - INSTALLATION CHECK
AH = 50h
Return: BX = 1954h if installed
AL = 00 if inactive, nonzero if active
Program: SCROLOCK is a utility supplied with System Enhancement Associates' ARC
SeeAlso: AH=51h
----------105000-----------------------------
INT 10 - VIDEO - AX PC - SET SCREEN COUNTRY CODE
AX = 5000h
BX = country code
0001h USA (English), 0051h Japan
Return: AL = status
00h successful
01h bad country code
02h other error
SeeAlso: AX=5001h,INT 16/AX=5000h
----------105001-----------------------------
INT 10 - VIDEO - AX PC - GET SCREEN COUNTRY CODE
AX = 5001h
Return: AL = status
00h successful
BX = country code
02h error
SeeAlso: AH=00h,AX=5000h,INT 16/AX=5001h,INT 21/AH=38h
----------105049-----------------------------
INT 10 - VIDEO - SCREENR v1.55+ - API
AX = 5049h ('PI')
BX = function
0000h installation check
0001h lock mode
0002h unlock mode
0003h lock palette
0004h unlock palette
Return: AX = 0000h if installed
BX = TSR version (BH=major,BL=minor)
CL = mode locking status
00h mode not locked
01h mode locked : INT 10/AH=00h disabled
CH = palette locking status
00h palette not locked
01h palette locked, the following functions are disabled:
AX=1000h, AX=1001h, AX=1002h, AX=1010h, AX=1012h
Program: SCREENR is a TSR supplied with Patrick Ibbetson's SCREEN display
utility.
----------1051-------------------------------
INT 10 - SCROLOCK.COM - ENABLE/DISABLE
AH = 51h
AL = state
00h disable
nonzero enable
Program: SCROLOCK is a utility supplied with System Enhancement Associates' ARC
SeeAlso: AH=50h"SCROLOCK"
----------105100-----------------------------
INT 10 - VIDEO - AX PC - REGISTER EXTERNAL CHARACTER
AX = 5100h
BH = character width in bits (10h)
BL = character height (10h)
DX = character code (DH = F0h-F3h, DL=40h-7Eh,80h-FCh)
ES:BP -> character bitmap
Return: AL = status (00h successful, 01h failed)
SeeAlso: AX=5101h,INT 1F
----------105101-----------------------------
INT 10 - VIDEO - AX PC - READ CHARACTER
AX = 5101h
BH = character width in bits
BL = character height
DX = character code (DH = 00h if 8-bit character)
ES:BP -> buffer for character bitmap
Return: AL = status (00h successful, 01h failed)
SeeAlso: AH=09h,AX=5100h
----------105200-----------------------------
INT 10 - VIDEO - AX PC - SET VIRTUAL TEXT RAM BUFFER
AX = 5200h
BX = segment of buffer
SeeAlso: AX=5201h
----------105201-----------------------------
INT 10 - VIDEO - AX PC - GET VIRTUAL TEXT RAM BUFFER
AX = 5201h
Return: BX = segment of buffer or 0000h if failed
SeeAlso: AX=8300h,AH=FEh
----------1053-------------------------------
INT 10 - Show Partner F/X v3.6 - START PRESENTATION
AH = 53h
DS:DX -> ASCIZ name of presentation file (no path, extension forced to
.PR2)
Return: ???
SeeAlso: AH=55h
----------1055-------------------------------
INT 10 - Show Partner F/X v3.6 - UNINSTALL
AH = 55h
Return: FXSHOW.EXE removed from memory
SeeAlso: AH=53h
----------105555-----------------------------
INT 10 - VIDEO - ATI EGA/VGA Wonder Super Switch - INSTALLATION CHECK
AX = 5555h
Return: AX = AAAAh if installed
BX:CX -> ??? routine in SMS.COM resident portion
-> data area in VCONFIG
Program: Super Switch (SMS.COM) is a video mode switch program supplied with
ATI EGA Wonder. It also maps video mode 08h to 27h or 23h.
SeeAlso: INT 10/AH=00h,INT 2F/AX=6400h
Format of data area:
Offset Size Description
00h DWORD original INT 09 vector
04h DWORD original INT 10 vector
08h DWORD original INT 1C vector
0Ch WORD screen saver state, 0=off, 1=on
0Eh WORD blanking interval in clock ticks
----------106A00BX0000-----------------------
INT 10 - Direct Graphics Interface Standard (DGIS) - INQUIRE AVAILABLE DEVICES
AX = 6A00h
BX = 0000h
CX = 0000h
DX = buffer length (may be 0)
ES:DI -> buffer
Return: BX = number of bytes stored in buffer
CX = bytes required for all descriptions (0 if no DGIS)
Note: buffer contains descriptions and addresses of DGIS-compatible
display(s) and printer(s)
SeeAlso: AX=6A02h
----------106A01CX0000-----------------------
INT 10 - DGIS - REDIRECT CHARACTER OUTPUT
AX = 6A01h
CX = 0000h
ES:DI = address of device to send INT 10 output to
Return: CX = 0000h output could not be redirected
else INT 10h output now routed to requested display
SeeAlso: AX=6A02h
----------106A02-----------------------------
INT 10 - DGIS - INQUIRE INT 10 OUTPUT DEVICE
AX = 6A02h
ES:DI = 0000h:0000h
Return: ES:DI = 0000h:0000h if current display is non-DGIS
else address of the current DGIS INT 10 display
SeeAlso: AX=6A00h,AX=6A01h
----------106E00------------------------------------
INT 10 - Paradise VGA internal - GET ???
AX = 6E00h
Return: AH = ??? (depends on serial number)
AL = ???
BX = ???
CL = ???
CH = ???
DX = ???
SeeAlso: AX=6E04,AX=6E05
----------106E04-------------------------------------
INT 10 - Paradise VGA internal - GET SCREEN SIZE AND ???
AX = 6E04h
Return: BX = screen width (columns)
CX = screen height (lines)
AH = ??? (05h or FFh)
AL = ??? (04h or video mode)
SeeAlso: AX=6E00,AX=6E05
----------106E05-------------------------------------
INT 10 - Paradise VGA internal - SET MODE
AX = 6E05h
BL = mode
Note: like AH=0, AL=BL.
SeeAlso: AH=00,AX=6E00,AX=6E04,AX=6F05h
----------106F00-----------------------------
INT 10 - VIDEO - Video7 VGA,VEGA VGA - INSTALLATION CHECK
AX = 6F00h
Return: BX = 5637h ('V7') indicates Video7 VGA/VEGA VGA extensions are present
----------106F01-----------------------------
INT 10 - VIDEO - Video7 VGA,VEGA VGA - GET MONITOR INFO
AX = 6F01h
Return: AL = monitor type code (VEGA VGA only)
AH = status register information
bit 0 = display enable
0 = display enabled
1 = vertical or horizontal retrace in progress
bit 1 = light pen flip flop set
bit 2 = light pen switch activated
bit 3 = vertical sync
bit 4 = monitor resolution
0 = high resolution (>200 lines)
1 = low resolution (<=200 lines)
bit 5 = display type
0 = color
1 = monochrome
bits6,7= diagnostic bits
Note: bits 0-3 are the same as the EGA/VGA status register bits 0-3
----------106F04-----------------------------
INT 10 - VIDEO - Video7 VGA,VEGA VGA - GET MODE AND SCREEN RESOLUTION
AX = 6F04h
Return: AL = current video mode (see AX=6F05h)
BX = horizontal columns (text) or pixels (graphics)
CX = vertical columns (text) or pixels (graphics)
SeeAlso: AX=6F05h
----------106F05-----------------------------
INT 10 - VIDEO - Video7 VGA, VEGA EXTENDED EGA/VGA - SET VIDEO MODE
AX = 6F05h
BL = mode (see below)
SeeAlso: AH=00h,AX=0070h
Values for video mode:
text/ text pixel pixel colors disp scrn system
grph resol box resoltn page addr
00h-13h = standard IBM modes (see AH=00h)
40h = T 80x43 8x8 Video7/VEGA VGA
41h = T 132x25 8x14 Video7/VEGA VGA
42h = T 132x43 8x8 Video7/VEGA VGA
43h = T 80x60 8x8 Video7/VEGA VGA
44h = T 100x60 8x8 Video7/VEGA VGA
45h = T 132x28 8x8 Video7/VEGA VGA
60h = G 752x410 16 Video7 VGA, VEGA VGA
61h = G 720x540 16 Video7 VGA, VEGA VGA
= G 720x540 16 Northgate, Headland 1024i
62h = G 800x600 16 Video7 VGA, VEGA Ext EGA
= G 800x600 16 Headland 1024i
63h = G 1024x768 2 Video7 VGA
64h = G 1024x768 4 Video7 VGA
65h = G 1024x768 16 Video7 VGA, VEGA Ext EGA
= G 1024x768 16 Headland 1024i
66h = G 640x400 256 Video7 VGA, VEGA Ext VGA
= G 640x400 256 Northgate, Headland 1024i
67h = G 640x480 256 Video7 VGA, VEGA Ext VGA
= G 640x480 256 Headland 1024i
68h = G 720x540 256 Video7 VGA, VEGA Ext VGA
= G 720x540 256 Headland 1024i
69h = G 800x600 256 Video7 VGA, VEGA Ext VGA
= G 800x600 256 Headland 1024i
70h = G 752x410 16gray Video7 VGA, VEGA VGA
71h = G 720x540 16gray Video7 VGA, VEGA VGA
72h = G 800x600 16gray Video7 VGA
73h = G 1024x768 2gray Video7 VGA
74h = G 1024x768 4gray Video7 VGA
75h = G 1024x768 16gray Video7 VGA
76h = G 640x400 256gray Video7 VGA
77h = G 640x480 256gray Video7 VGA
78h = G 720x540 256gray Video7 VGA
79h = G 800x600 256gray (future)
SeeAlso: AH=00h,AX=0070h,AX=007Eh,AX=6F04h
----------106F06-----------------------------
INT 10 - VIDEO - Video7 VGA,VEGA VGA - SELECT AUTOSWITCH MODE
AX = 6F06h
BL = Autoswitch mode select
00h select EGA/VGA-only modes
01h select Autoswitched VGA/EGA/CGA/MGA modes
02h select 'bootup' CGA/MGA modes
BH = enable/disable (00h enable, 01h = disable selection)
----------106F07-----------------------------
INT 10 - VIDEO - Video7 VGA,VEGA VGA - GET VIDEO MEMORY CONFIGURATION
AX = 6F07h
Return: AL = 6Fh
AH = bits 0-6 = number of 256K blocks of video memory
bit 7 = DRAM/VRAM (0: DRAM, 1: VRAM)
BH = chip revision (SR8F) (S/C Chip in VEGA VGA)
BL = chip revision (SR8E) (G/A Chip in VEGA VGA)
CX = 0000h
SeeAlso: AH=12h/BL=10h
----------1070-------------------------------
INT 10 - VIDEO - TANDY 2000 only - GET ADDRESS OF VIDEO RAM
AH = 70h
Return: AX:BX -> WORD containing green plane's offset
AX:CX -> WORD containing green plane's segment
AX:DX -> WORD containing segment of red (offset 0) and blue (offset
4000) planes
SeeAlso: AH=71h
----------107000BX0000-----------------------
INT 10 - Everex Extended Video BIOS - RETURN EMULATION STATUS
AX = 7000h
BX = 0000h
Return: AL = 70h if Trident-based Everex card
CL = monitor type
00h mono
01h CGA
02h EGA
03h digital multifrequency
04h IBM PS/2
05h IBM 8514
06h SuperVGA
07h analog multifrequency
08h super multifrequency
CH = feature bits
bits 7,6: 00 = 256K memory
01 = 512K memory
10 = 1024K
11 = 2048K memory
bit 5: special oscillator present
bit 4: VGA protect enabled
bit 0: 6845 emulation
DX = video board info
bits 4-15: board ID model
bits 0-3: board ID revision
DI = BCD BIOS version number
Note: board models for Trident-based Everex cards:
236h Ultragraphics II
620h Vision VGA
673h EVGA
678h Viewpoint
----------107000BX0004-----------------------
INT 10 - Everex Extended Video BIOS - GET PAGING FUNCTION POINTER FOR CURR MODE
AX = 7000h
BX = 0004h
Return: ES:DI -> FAR paging function (call with DL = page to set)
Note: the word preceding ES:DI is the length of the function in bytes, and
the last byte of the function is a FAR return instruction.
SeeAlso: AX=4F05h,AX=7000h/BX=0000h,AX=7000h/BX=0005h
----------107000BX0005-----------------------
INT 10 - Everex Extended Video BIOS - GET SUPPORTED MODE INFO
AX = 7000h
BX = 0005h
CL = maximum number of modes to get info for
CH = mode type to get info for (see below)
DL = monitor type to get info for
ES:DI -> buffer for mode info (see below)
Return: CL = total number of modes fitting criteria
CH = size of each info record
SeeAlso: AX=7000h/BX=0000h,AX=7000h/BX=0004h
Values for mode type:
00h all modes
01h monochrome text modes
02h color text modes
03h four-color CGA graphics modes
04h two-color CGA graphics modes
05h 16-color graphics modes
06h 256-color graphics modes
Format of mode information record:
Offset Size Description
00h BYTE mode number (bit 7 set if extended mode)
01h BYTE mode type (see above)
02h BYTE info bits
bits 7,6 reserved
5 monochrome mode
4 interlaced display
3 requires special oscillator
2,1 memory required
00 = 256K
01 = 512K
10 = 1024K
11 = 2048K
0 reserved
03h BYTE font height
04h BYTE text columns on screen
05h BYTE text rows on screen
06h WORD number of scan lines
08h BYTE color information
bits 7-4 reserved
3-0 bits per pixel
----------1071-------------------------------
INT 10 - VIDEO - TANDY 2000 only - GET ADDRESS OF INCRAM
AH = 71h
Return: AX:BX -> WORD containing segment address of INCRAM
AX:CX -> WORD containing offset of INCRAM
SeeAlso: AH=70h
----------1072-------------------------------
INT 10 - VIDEO - TANDY 2000 only - SCROLL RIGHT PART OR ALL OF SCREEN
AH = 72h
AL = number of columns to shift scroll area, 00h to clear entire area
BH = new attributes for blanked columns at left
CH,CL = row, column of upper left corner of scroll area
DH,DL = row, column of lower right corner of scroll area
SeeAlso: AH=06h,AH=07h,AH=73h,INT 15/AH=12h/BH=05h
----------1073------------------------------
INT 10 - VIDEO - TANDY 2000 only - SCROLL LEFT PART OR ALL OF SCREEN
AH = 73h
AL = number of columns to shift scroll area, 00h to clear entire area
BH = new attributes for blanked columns at right
CH,CL = row, column of upper left corner of scroll area
DH,DL = row, column of lower right corner of scroll area
SeeAlso: AH=06h,AH=07h,AH=72h,INT 15/AH=12h/BH=05h
----------107F00-----------------------------
INT 10 - SOLLEX SuperVGA - GET EXTENSIONS INFO
AX = 7F00h
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
ES:DI -> info structure (see below)
01h failed
SeeAlso: AX=4F00h
Format of info structure:
Offset Size Description
00h DWORD pointer to VESA function dispatch table
04h DWORD pointer to SOLLEX function dispatch table
08h DWORD pointer to VESA SuperVGA info (see AX=4F00h)
0Ch DWORD pointer to mode info structure table, consisting of
alternating ResInfo (see below) and VESA mode information
(see AX=4F01h) blocks, terminated with an FFFFh word
10h DWORD pointer to font info structure table (see below)
14h WORD high resolution crystal frequency in Hz (0000h = not present)
16h DWORD pointer to ASCIZ ID string
1Ah DWORD pointer to timeout reset table
array of bytes, each a multiple of the minimum time increment
1Eh WORD minimum time increment in timer ticks
20h BYTE inverse options supported
bit 0: inverse supported
bits 1-7: reserved
21h BYTE normal color value
22h BYTE inverse color value
23h WORD port to be accessed for normal/inverse settings
25h WORD type of interface chip (currently undefined)
27h WORD program operational mode
bits 1-0: 00 no preference
01 terse (minimum detail in program messages)
10 verbose
11 use menus if supported, verbose mode otherwise
bits 7-2: reserved
29h WORD SOLLEX specification version
2Bh WORD version of VESA/SOLLEX implementation
2Dh DWORD offset to relocatable portion of SOLLEX extensions (for CONFIG)
2Eh DWORD offset to unused section of the extensions ROM
31h 16 BYTEs reserved
Note: all DWORD pointers initially require segment fixups; if the segment
is 0000h, it should be changed to the returned ES, otherwise it
may be assumed to be correct
Format of ResInfo:
Offset Size Description
00h WORD 16-bit mode number
02h WORD adapter type (00h VGA, 01h EGA, 02h CGA, 03h MDA)
04h WORD display info (see AX=7F01h/BL=01h)
06h DWORD pointer to video parameter table
0Ah BYTE replacement entry in master Video Parameter
0Bh BYTE mode requested for mode set by BIOS
0Ch DWORD pointer to LoadReg table
10h BYTE index into table of clock values (see below)
Format of font info table [array] entry:
Offset Size Description
00h BYTE required font height
01h BYTE parameter to load text mode font
02h BYTE parameter to load graphics mode font
Values for clock value index:
00h 25 MHz
01h 28 MHz
02h PCLK
03h 31.5 MHz (VESA 640x480)
04h reserved
05h 16 MHz (EGA)
06h PCLK
07h 24 MHz (EGA)
08h 25 MHz
09h 28 MHz
0Ah 36 MHz
0Bh 45 MHz (for 1024x768)
0Ch 80 MHz
0Dh 40 MHz
0Eh 65 MHz
0Fh 1 MHz (for powerdown)
----------107F01BL00-------------------------
INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - SET ADAPTER
AX = 7F01h
BL = 00h
CX = adapter request
bits 1-0: adapter type (00 VGA, 01 EGA, 10 CGA, 11 MDA)
bit 2: reserved
bits 4-3: change displays (00 none, 01 analog 10 digital 11 panel)
bits 6-5: desired monitor sense (01 color, 10 mono, 11=8514)
bit 7: lock override
bit 8: alternate adapter mode
bits 15-9: reserved
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
Note: initializes video hardware to a particular standard
SeeAlso: AX=7F00h,AX=7F01h/BL=01h,AX=7F01h/BL=02h
----------107F01BL01-------------------------
INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - GET ADAPTER
AX = 7F01h
BL = 01h
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
BX = adapter type (see AX=7F01h/BL=00h)
DX = display type
bits 1-0: monitor sense (00 none, 01 color, 10 mono, 11=8514)
bit 2: multi-frequency analog monitor active
bit 3: LCD panel active
bit 4: plasma/electroluminescent panel active
bit 5: PS/2-type monitor active
bit 6: multi-frequency digital monitor active
bit 7: Enhanced Color Display monitor active
bit 8: alternate display active
bits 15-9: reserved
SeeAlso: AX=7F00h,AX=7F01h/BL=00h,AX=7F01h/BL=02h
----------107F01BL02-------------------------
INT 10 - SOLLEX SuperVGA - ADAPTER CONTROL - DETERMINE ADAPTER SUPPORT
AX = 7F01h
BL = 02h
CX = adapter request (see AX=7F01h/BL=00h)
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h requested setting can successfully be made
01h requested setting not available in this configuration
SeeAlso: AX=7F00h,AX=7F01h/BL=00h
----------107F02BL00-------------------------
INT 10 - SOLLEX SuperVGA - DISPLAY OUTPUT CONTROL - SET DISPLAY OUTPUT
AX = 7F02h
BL = 00h
CX = display output setting
bit 0: CRTC control in bits 2,1 valid
bit 1: enable digital output
bit 2: enable analog output
bit 3: panel control in bits 5,4 valid
bit 4: enable LCD output
bit 5: enable plasma/EL output
bit 6: inverse control in bit 7 valid
bit 7: 0=normal, 1=inverse
bits 15-8 reserved
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
SeeAlso: AX=7F00h,AX=7F02h/BL=00h
----------107F02BL01-------------------------
INT 10 - SOLLEX SuperVGA - DISPLAY OUTPUT CONTROL - GET DISPLAY OUTPUT
AX = 7F02h
BL = 01h
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
BX = display output setting (see AX=7F02h/BL=00h)
CX = displays attached
bit 0: PS/2 display on analog output
bit 1: multi-frequency monitor on analog output
bit 2: LCD panel attached
bit 3: plasma/electroluminescent panel attached
bit 4: multi-frequency monitor on digital output
bit 5: Enhanced Color Display attached to digital outpt
bit 6: alternate display
bits 15-7: reserved
01h failed
SeeAlso: AX=7F00h,AX=7F02h/BL=00h
----------107F03BL00-------------------------
INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - GET SUPPORT INFO
AX = 7F03h
BL = 00h
CX = support type
0000h VGA, 0001h EGA, 0002h CGA, 0003h MDA, 0004h extensions,
0005h-0012h reserved for SOLLEX, 0013h Hercules,
0014h-001Fh reserved for SOLLEX, 0020h-00FFh reserved for OEM
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
CX = size of video support code
DX = segment of physical video support (0000h if no ROM)
ES = segment of active video support
ES:DI -> information block (DI = 0000h if none available)
01h failed
SeeAlso: AX=7F03h/BL=01h
----------107F03BL01-------------------------
INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - INITIALIZE VIDEO SUPPORT
AX = 7F03h
BL = 01h
CX = support request
ES = segment of support code
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
Note: initializes the indicated video support by calling ES:0003h; this
function may be used to switch the active video support back to
ROM after AX=7F03h/BL=02h
SeeAlso: AX=7F03h/BL=00h
----------107F03BL02-------------------------
INT 10 - SOLLEX SuperVGA - VIDEO SUPPORT CONTROL - GO RAM RESIDENT
AX = 7F03h
BL = 02h
CX = support request
ES = destination segment
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
SeeAlso: AX=7F00h,AX=7F03h/BL=01h
----------107F04BL00-------------------------
INT 10 - SOLLEX SuperVGA - POWER CONTROL - SET POWER STATE
AX = 7F04h
BL = 00h
CX = new power state
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
Note: higher values progressively reduce the operations available on the
video adapter while yielding increasing power savings
SeeAlso: AX=7F00h,AX=7F04h/BL=01h
----------107F04BL01-------------------------
INT 10 - SOLLEX SuperVGA - POWER CONTROL - GET POWER STATE
AX = 7F04h
BL = 01h
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
CX = current power state
DX = maximum state
01h failed
SeeAlso: AX=7F00h,AX=7F04h/BL=00h
----------107F04BL02-------------------------
INT 10 - SOLLEX SuperVGA - POWER CONTROL - SET TIMEOUT RESET
AX = 7F04h
BL = 02h
CX = timeout reset
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
SeeAlso: AX=7F00h,AX=7F04h/BL=03h
----------107F04BL03-------------------------
INT 10 - SOLLEX SuperVGA - POWER CONTROL - GET TIMEOUT RESET
AX = 7F04h
BL = 03h
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
BX = time increment
CX = current timeout reset
DX = maximum timeout reset
ES:DI -> timeout reset table (array of bytes)
01h failed
Note: the timeout period is computed as (BYTE ES:[DI+CX]) * BX timer ticks
SeeAlso: AX=7F00h,AX=7F04h/BL=02h
----------107F05-----------------------------
INT 10 - SOLLEX SuperVGA - LOAD REGISTER
AX = 7F05h
ES:DI -> register value table (see below)
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
SeeAlso: AH=F1h,AH=F3h,AH=F5h
Format of register value table:
Offset Size Description
00h WORD base I/O register (FFFFh = end of list)
02h 2N BYTEs pairs of values to be written to the base I/O register as an
index value and the following register as a data byte
2N+2 WORD FFFFh (end of data list)
... (repeats until FFFFh base address)
----------107F06-----------------------------
INT 10 - SOLLEX SuperVGA - MULTIPLE FONT CONTROL
AX = 7F06h
BL = subfunction
00h set multiple font state
CX = new state (00h off, 01h on)
01h get multiple font state
Return: BL = current state (00h off, 01h on)
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
SeeAlso: AH=11h
----------107F07-----------------------------
INT 10 - SOLLEX SuperVGA - FILL VIDEO RAM
AX = 7F07h
BL = how much to fill
00h regen size
01h all video memory
CX = pattern to write (normally 0720h for text modes and 0000h for gr)
Return: AL != 7Fh if not supported
AL = 7Fh if supported
AH = status
00h successful
01h failed
SeeAlso: AH=06h
----------1080--DX4456-----------------------
INT 10 U - VIDEO - DESQview 2.0x only - internal - SET ??? HANDLER
AH = 80h
DX = 4456h ('DV')
ES:DI -> FAR subroutine to be called on ???
Return: DS = segment of DESQview data structure for video buffer
Note: this function is probably meant for internal use only, due to the magic
value required in DX
the subroutine seems to be called when the DESQview menu is accessed;
on entry, AL = 03h or 04h
----------1081--DX4456-----------------------
INT 10 U - VIDEO - DESQview 2.0x only - internal - GET ???
AH = 81h
DX = 4456h ('DV')
Return: ES = segment of DESQview data structure for video buffer
BYTE ES:[0] = current window number in DV 2.0x
Note: this function is probably meant for internal use only, due to the magic
value required in DX
SeeAlso: AH=82h
----------1082--DX4456-----------------------
INT 10 U - VIDEO - DESQview 2.0x only - internal - GET CURRENT WINDOW INFO
AH = 82h
DX = 4456h ('DV')
Return: DS = segment in DESQview for data structure
in DV 2.00,
BYTE DS:[0] = window number
WORD DS:[1] = segment of other da