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Interrupt List Release 29 Last change 2/9/92
This compilation is Copyright (c) 1989, 1990, 1991, 1992 Ralf Brown
---------------------------------------------
Please redistribute the following files unmodified as a group, in a pair of
archives named INTER29A and INTER29B (preferably the original authenticated
PKZIP archives):
INTERRUP.1ST the read-me file, containing credits, availability info
INTERRUP.A INT 00 through INT 14 \
INTERRUP.B INT 15 through INT 1F \ total 716 pages at
INTERRUP.C INT 20 thru INT 21/7F \ 60 lines per page,
INTERRUP.D INT 21/80 thru INT 2F/7F / 767 with INTPRINT -p
INTERRUP.E INT 2F/80 thru INT 5F / (3232 entries)
INTERRUP.F INT 60 through INT FF /
INTERRUP.PRI a brief introduction to interrupts
INTPRINT.COM a simple formatter that also generates a list summary
INTPRINT.DOC instructions for INTPRINT
INTPRINT.C source code for INTPRINT
MEMORY.LST format of the BIOS data area
The following files should be distributed in an archive called INTER28C (they
have not been updated since Release 28):
INT2HLP.BAT Perl script to convert list into QuickHelp database
INT2GUID.* convert list into TurboPower GUIDE or POPHELP database
INT2QH.* program to convert list into QuickHelp database
INTHELP.* convert list into TurboPower GUIDE database
---------------------------------------------
If you notice any mistakes or omissions, please let me know! It is only with
YOUR help that the list can continue to grow at the current rate. Please send
all changes to me rather than distributing a modified version of the list.
Please read the file INTERRUP.1ST before asking me any questions. You may find
that they have already been addressed.
Ralf Brown
ARPA: ralf@cs.cmu.edu
UUCP: {ucbvax,harvard}!cs.cmu.edu!ralf
BIT: ralf%cs.cmu.edu@cmuccvma
FIDO: Ralf Brown 1:129/26.1
or post a message to me in the DR_DEBUG echo
CIS: >INTERNET:ralf@cs.cmu.edu
I reply to all e-mail submissions and inquiries, but some of my replies bounce
because of bad return paths. If you don't get a response from me within a
reasonable period of time, send it again with a better return path (starting at
harvard or ucbvax for UUCP, from the ARPA Internet for others).
---------------------------------------------
See INTERRUP.1ST for the key to system abbreviations and a list of the
trademarks mentioned here.
---------------------------------------------
DISCLAIMER: THIS MATERIAL IS PROVIDED "AS IS". I verify the information
contained in this list to the best of my ability, but I cannot be held
responsible for any problems caused by use or misuse of the information,
especially for those functions not officially documented. If it is marked
"internal", you should check it carefully to make sure it works the same
way in your version of the software (and please let me know whether or not
it works the same way). Information marked with "???" is known to be
incomplete or guesswork.
---------------------------------------------
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
----------00---------------------------------
INT 00 - CPU-generated - DIVIDE ERROR
Notes: 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.
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
Notes: generated after each instruction if TF (trap flag) is set; TF is
cleared on invoking the single-step interrupt handler
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
Notes: generated by the CPU when the input to the NMI pin is asserted
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
Notes: generated by the one-byte breakpoint instruction (opcode CCh)
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)
----------04---------------------------------
INT 04 - CPU-generated - INTO DETECTED OVERFLOW
Notes: the INTO instruction will generate this interrupt if OF (Overflow Flag)
is set; otherwise, INTO is effectively a NOP
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
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
Notes: generated by BOUND instruction when the value to be tested is less than
the indicated lower bound or greater than the indicated upper bound.
returning from this interrupt re-executes the failing BOUND instruction
----------06---------------------------------
INT 06 - CPU-generated (80286+) - INVALID OPCODE
Notes: generated when the CPU attempts to execute an invalid opcode (most
protected-mode instructions are considered invalid in real mode)
generated on BOUND, LDS, LES, or LIDT instructions which specify a
register rather than a memory address
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
Note: called just before going into light or deep (shutdown) sleep and just
after returning from light or deep sleep
SeeAlso: INT 0B"HP 95LX"
----------07---------------------------------
INT 07 - CPU-generated (80286+) - PROCESSOR EXTENSION NOT AVAILABLE
Notes: automatically called if a coprocessor instruction is encountered when
no coprocessor is installed
can be used to emulate a numeric coprocessor in software
SeeAlso: INT 09"MATH UNIT PROTECTION"
----------08---------------------------------
INT 08 - IRQ0 - SYSTEM TIMER
Notes: 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
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
Notes: called when multiple exceptions occur on one instruction, or an
exception occurs in an exception handler
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
Notes: generated when data is received from the keyboard. This is normally a
scan code, but may also be an ACK or NAK of a command on AT-class
keyboards.
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
the interrupt handler performs the following actions for certain
special keystrokes:
Ctrl-Break invoke INT 1B, 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
SeeAlso: INT 05,INT 0B"HP 95LX",INT 15/AH=4Fh,INT 15/AH=85h,INT 16,INT 1B
SeeAlso: INT 51"DESQview",INT 59"DoubleDOS",INT 79"GO32"
----------09---------------------------------
INT 09 - CPU-generated (80286+) - PROCESSOR EXTENSION PROTECTION ERROR
Notes: 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
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 - internal hardware - RESERVED BY Intel (80486 protected mode)
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 - CPU-generated (80286+ protected mode) - INVALID TASK STATE SEGMENT
Notes: 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
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 - CPU-generated (80286+ protected mode) - SEGMENT NOT PRESENT
Notes: 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
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"
----------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
SeeAlso: INT 0B"COM2",INT 54"DESQview",INT 5C"DoubleDOS",INT 7C"GO32"
----------0C---------------------------------
INT 0C - CPU-generated (80286+) - STACK FAULT
Notes: generated on stack overflow/underflow in protected mode
generated in protected mode if an inter-level transition or task switch
references a stack segment marked "not present"
generated on accessing a word operand at SS:FFFFh in real mode
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"
----------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
Notes: generated by floppy disk controller on completion of an operation
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
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"
----------0F---------------------------------
INT 0F - IRQ7 - PARALLEL PRINTER
Notes: generated by the LPT1 printer adapter when printer becomes ready
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 70
----------10---------------------------------
INT 10 - CPU-generated (80286+) - COPROCESSOR ERROR
Notes: generated by the CPU when the -ERROR pin is asserted by the coprocessor
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 <= 7 except mode 6
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
the installation check for Ahead adapters is the signature "AHEAD" at
C000h:0025h
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
"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
the installation check for Paradise adapters is the signature "VGA=" at
C000h:007Dh
SeeAlso: AX=0070h,AX=007Eh,AX=10F0h,AX=6F05h,AH=FFh"GO32",INT 5F/AH=00h
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 = G 20x25 8x8 160x200 16 PCjr
= T 132x25 8x8 16 B800 ATI EGA/VGA Wonder [1]
= T 132x25 8x8 mono B000 ATI EGA/VGA Wonder [1]
= G 90x43 8x8 720x352 mono B000 Hercules + MSHERC.COM
09h = G 40x25 8x8 320x200 16 PCjr
0Ah = G 80x25 8x8 640x200 4 PCjr
0Bh = reserved (used internally by EGA BIOS)
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 = G 80x34 8x14 640x480 Lava Chrome II EGA
= T 132x25 Tecmar VGA/AD
18h = 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
1Ah = T 132x28 8x13 mono Tseng Labs EVA
= T 132x28 8x13 16/256 4 B000 Tseng ET4000 chipset
= G 640x350 256 Tecmar VGA/AD
1Bh = G 640x400 256 Tecmar VGA/AD
1Ch = G 640x480 256 Tecmar VGA/AD
1Dh = G 800x600 256 Tecmar VGA/AD
20h = G 240x128 B000 HP 95LX
21h = G 80x43 8x8 720x348 mono B000 DESQview 2.x+Hercules [3]
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 132x28 Allstar Peacock (VGA)
= T 132x28 16 Orchid Prodesigner VGA
24h = 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 132x25 Allstar Peacock (VGA)
= T 132x25 16 Orchid Prodesigner VGA
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)
26h = T 80x60 8x8 Tseng Labs EVA
= T 80x60 8x8 16/256 2 B800 Tseng ET4000 chipset
= G 80x60 8x8 640x480 Ahead Systems EGA2001
= G 80x60 8x8 640x480 16 1 A000 Ahead B (same as 25h)
= T 80x60 Allstar Peacock (VGA)
= T 80x60 16 Orchid ProDesigner VGA
27h = G 720x512 16 VEGA VGA
= G 720x512 16 Genoa
= T 132x25 8x8 mono B000 ATI EGA Wonder,ATI VIP
28h = T ???x??? VEGA VGA
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
2Ah = T 100x40 Allstar Peacock (VGA)
= T 100x40 8x16 16 Orchid Prodesigner VGA
= T 100x40 8x15 16/256 4 B800 Tseng ET4000 chipset
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
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 = G 720x512 256 VEGA VGA
= G 720x512 256 Genoa
= G 80x25 8x16 640x400 256/256k 1 A000 Tseng ET4000 chipset
= T 160x50 8x8 1280x400 16 4 B800 Ahead B (Wizard/3270)
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
37h = G 1024x768 16 VEGA VGA
= G 128x48 8x16 1024x768 16 A000 Orchid
= G 1024x768 16 A000 STB,Genoa,Sigma
= G 1024x768 16 Definicon
= G 1024x768 16 Tseng ET3000
= T 132x44 8x8 mono B800 ATI EGA Wonder,ATI VIP
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
3Eh = G 1280x961 16 Definicon
40h = G 80x25 8x16 640x400 2 1 B800 AT&T 6300, AT&T VDC600
= G 80x25 8x16 640x400 2 1 B800 Compaq Portable
= T 80x43 VEGA VGA, Tecmar VGA/AD
= T 80x43 Video7 V-RAM VGA
= T 80x43 Tatung VGA
= T 100x30 16 MORSE VGA
41h = G 640x200 16 1 AT&T 6300
= T 132x25 VEGA VGA
= T 132x25 Tatung VGA
= T 132x25 Video7 V-RAM VGA
= T 100x50 16 MORSE VGA
42h = G 80x25 8x16 640x400 16 AT&T 6300, AT&T VDC600
= 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
43h = G 640x200 of 640x400 viewport AT&T 6300 (unsupported)
= 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
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 = G 100x40 8x15 800x600 2 AT&T VDC600
47h = G 100x37 8x16 800x600 16 AT&T VDC600
48h = G 80x50 8x8 640x400 2 B800 AT&T 6300, AT&T VDC600
49h = G 80x30 8x16 640x480 Lava Chrome II EGA
4Dh = T 120x25 VEGA VGA
4Eh = T 120x43 VEGA VGA
4Fh = T 132x25 VEGA VGA
50h = G 80x30 8x16 640x480 16 Paradise EGA-480
= T 80x30 8x16 16/256k B800 Trident TVGA 8800/8900
= T 80x34 Lava Chrome II EGA
= T 80x43 mono VEGA VGA
= G 640x480 mono??? Taxan 565 EGA
= 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 132x30 16 MORSE VGA
51h = T 80x30 8x16 Paradise EGA-480
= T 80x30 Lava Chrome II EGA
= G 80x34 8x14 640x480 16 ATI EGA Wonder
= 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 132x28 9x12 4 4 B800 Ahead B
= T 132x50 16 MORSE VGA
52h = T 80x60 Lava Chrome II EGA
= T 80x60 8x8 16/256k B800 Trident TVGA 8800/8900
= G 94x29 8x14 752x410 16 ATI EGA Wonder
= G 100x75 8x8 800x600 16 1 A000 OAK Technologies VGA-16
= 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
53h = G 100x40 8x14 800x560 16 ATI EGA Wonder,ATI VIP
= G 640x480 256 Oak VGA
= T 132x25 8x14 16/256k B800 Trident TVGA 8800/8900
= T 132x43 Lava Chrome II EGA
= T 80x60 16 MORSE VGA
= G AX PC
54h = G 100x42 8x14 800x600 16 A000 ATI EGA Wonder, VGA Wonder
= G 800x600 256 Oak VGA
= T 132x25 Lava Chrome II EGA
= T 132x30 8x16 16/256k B800 Trident TVGA 8800/8900
= T 132x43 8x8 Paradise EGA-480
= 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
55h = T 80x66 8x8 16/256k A000 ATI VIP
= T 132x25 8x14 Paradise EGA-480
= 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 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 16/256h ATI VGA Wonder Plus
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 132x60 8x8 16/256k B800 Trident TVGA 8800/8900
= G 1024x768 16 Oak VGA
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 mono Taxan 565 EGA
= T 132x25 7x16 2 AT&T VDC600
= T 132x25 9x14 16/256k B800 Trident TVGA 8800/8900
58h = G 100x75 8x8 800x600 16/256k A000 Paradise VGA
= G 100x75 8x8 800x600 16 AT&T VDC600
= T 80x33 8x14 16 B800 ATI EGA Wonder,ATI VIP
= G 800x600 16 AST VGA Plus, Compaq VGA
= G 800x600 16 Dell VGA
= G 800x600 16 Hewlett-Packard D1180A
= T 132x30 9x16 16/256k B800 Trident TVGA 8800/8900
59h = G 100x75 8x8 800x600 2 A000 Paradise VGA
= G 100x75 8x8 800x600 2 AT&T VDC600
= T 80x66 8x8 16/256k A000 ATI VIP
= G 800x600 2 AST VGA Plus, Compaq VGA
= G 800x600 2 Dell VGA
= G 800x600 2 Hewlett-Packard D1180A
= T 132x43 9x11 16/256k B800 Trident TVGA 8800/8900
5Ah = T 132x60 9x8 16/256k B800 Trident TVGA 8800/8900
5Bh = G 800x600 16 Maxxon, SEFCO TVGA, Imtec
= G 640x350 256 Genoa 6400
= T 80x30 8x16 B800 ATI VGA Wonder (undoc)
= G 100x75 8x8 800x600 16/256k A000 Trident TVGA 8800, 8900
5Ch = 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 640x480 256 Genoa 6400
5Dh = 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)
5Eh = G 640x400 256 Paradise VGA,VEGA VGA
= G 640x400 256 AST VGA Plus
= G 640x400 256 Compaq VGA, Dell VGA
= G 80x25 8x16 640x400 256 AT&T VDC600
= G 800x600 16 Logix, ATI Prism Elite
= G 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
= G 640x480 256 Compaq VGA, Dell VGA
= G 640x480 256 Hewlett-Packard D1180A
= G 80x30 8x16 640x480 256 AT&T VDC600 (512K)
= G 1024x768 16 Logix, ATI Prism Elite
= G 1024x768 16 Maxxon, Genoa 6400, Imtec
= 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 = G 80x??? ???x400 Corona/Cordata BIOS 4.10+
= G 752x410 VEGA VGA
= G 752x410 16 Tatung VGA
= G 752x410 16 Video7 V-RAM VGA
= G 80x25 8x16 640x400 256 1 A000 Ahead A, Ahead B
= G 128x48 8x16 1024x768 4/256k A000 Trident TVGA 8900
= T 132x25 8x14 16/64 8 B800 Quadram Ultra VGA
61h = G ???x400 Corona/Cordata BIOS 4.10+
= G 720x540 VEGA VGA
= G 720x540 16 Tatung VGA
= G 720x540 16 Video7 V-RAM VGA
= G 80x25 8x16 640x400 256 A000 ATI VGA Wonder,VGA Wonder+
= G 80x30 8x16 640x480 256 1 A000 Ahead A, Ahead B (512K)
= G 96x64 8x16 768x1024 16/256k A000 Trident TVGA 88/8900 512K
= T 132x29 8x12 16/64 8 B800 Quadram Ultra VGA
62h = G 800x600 VEGA VGA
= G 800x600 16 Tatung VGA
= G 800x600 16 Video7 V-RAM VGA
= G 80x30 8x16 640x480 256 A000 ATI VGA Wonder,VGA Wonder+
= G 100x75 8x8 800x600 256 1 A000 Ahead A, Ahead B (512K)
= G 128x48 8x16 1024x768 256/256k A000 Trident TVGA 8900, Zymos
= T 132x32 8x11 16/64 6 B800 Quadram Ultra VGA
63h = G 1024x768 2 Video7 V-RAM VGA
= G 100x42 8x14 800x600 256 A000 ATI VGA Wonder,VGA Wonder+
= G 128x48 7x16 1024x768 256 1 A000 Ahead B (1MB)
= T 132x44 8x8 16/64 5 B800 Quadram Ultra VGA
= G 720x540 16 MORSE VGA
64h = G 1024x768 4 Video7 V-RAM VGA
= G 128x48 8x16 1024x768 256 A000 ATI VGA Wonder Plus
= G 800x600 16 MORSE VGA
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
69h = G 720x540 256 Video7 V-RAM VGA
6Ah = G 800x600 16 A000 VESA standard interface
= G 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)
70h = G 800x600 16 C&T chipset, Cardinal
= G 90x28 8x14 720x392 16 1 A000 Ahead B
= T 40x25 8x8 16 8 B800 Quadram (CGA double scan)
= extended mode set (see AX=0070h) Everex Micro Enhancer EGA
71h = G 100x35 8x16 800x600 16of64 A000 NSI Smart EGA+
= G 960x720 16 C&T chipset, Cardinal
= G 100x75 8x8 800x600 16 1 A000 Ahead B (same as 6Ah)
= T 80x25 8x8 16 8 B800 Quadram (CGA double scan)
72h = G 1024x768 16 C&T chipset, Cardinal
= T 80x60 8x8 16 B800 Quadram Ultra VGA
= G 640x480 32768 A000 ATI
73h = G 80x60 8x8 640x480 16??? A000 Quadram Ultra VGA
74h = G 640x400 2 B800 Toshiba 3100 AT&T mode
= G 128x48 8x16 1024x768 16 1 A000 Ahead A, Ahead B (512K)
= T 80x66 8x8 16 B800 Quadram Ultra VGA
75h = G 128x48 8x16 1024x768 4 1 A000 Ahead B
= G 80x66 640x528 16??? A000 Quadram Ultra VGA
76h = G 128x48 8x16 1024x768 2 1 A000 Ahead B
= T 94x29 8x14 16 B800 Quadram Ultra VGA
77h = G 94x29 752x410 16??? A000 Quadram Ultra VGA
78h = G 640x400 256 STB VGA/EM-16 Plus
= G 640x400 256 Cardinal, C&T chipset
= T 100x75 8x8 16 B800 Quadram Ultra VGA
79h = G 640x480 256 Cardinal, C&T chipset
= G 100x75 800x600 16??? A000 Quadram Ultra VGA
7Ah = G 720x540 256 C&T chipset, Cardinal
= T 114x60 8x8 16 B800 Quadram Ultra VGA
7Bh = G 800x600 256 C&T chipset, Cardinal
= G 114x60 912x480 16??? A000 Quadram Ultra VGA
7Ch = G 512x512 16 Genoa
7Dh = G 512x512 256 Genoa
7Eh = special mode set (see AX=007Eh) Paradise VGA, AT&T VDC600
7Fh = special function set (see AX=007Fh) Paradise VGA, AT&T VDC600
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
----------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 abovve 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
----------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
----------1005-------------------------------
INT 10 - VIDEO - MANIPULATE CRT/CPU PAGE REGISTERS (PCjr)
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 - GRAPHICS BITMAP BUFFER (Corona/Cordata BIOS v4.10+)
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
----------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
----------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
SeeAlso: AH=09h,AX=1003h
----------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,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)
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 = widht 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???
???
----------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
Notes: BWE is a TSR by John J. Seal published in May 1986 Dr. Dobb's Journal
when a window has been set, all output via AH=0Eh is restricted to
the specified window
SeeAlso: AH=11h"Window",AH=12h"Window"
----------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
Notes: 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)
Notes: 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)
Notes: 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: 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 - VIDEO - undocumented - SET PEL MASK (VGA/MCGA)
AX = 1018h
BL = new PEL value
SeeAlso: AX=1019h
----------101019-----------------------------
INT 10 - VIDEO - undocumented - 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
----------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
Return: AX = 0000h 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
SeeAlso: AX=10F1h
----------1010F1-----------------------------
INT 10 - VIDEO - Tseng ET-4000 BIOS - GET DAC TYPE
AX = 10F1h
Return: BL = type of digital/analog converter
00h normal VGA DAC
01h Sierra SC1148x HiColor DAC
else other HiColor DAC
SeeAlso: AX=10F0h
----------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
Note: 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
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
DL = character rows on screen - 1
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
Note: 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--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
----------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
----------103000CX0000-----------------------
INT 10 - VIDEO - LOCATE 3270PC CONFIGURATION TABLE (INSTALLATION CHECK)
AX = 3000h
CX = 0000h
DX = 0000h
Return: CX:DX -> 3270PC configuration table (see below for format)
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")
----------1040-------------------------------
INT 10 - VIDEO - SET GRAPHICS MODE (Hercules GRAFIX)
AH = 40h
SeeAlso: AH=41h
----------1041-------------------------------
INT 10 - VIDEO - SET TEXT MODE (Hercules GRAFIX)
AH = 41h
SeeAlso: 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=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=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
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
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
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)
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
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, 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 if 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
1Ch BYTE size of bank in K
----------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
----------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=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
----------104FFF-----------------------------
INT 10 - VESA SuperVGA BIOS - Everex - TURN VESA ON/OFF
AX = 4FFFh
DL = new state (00h off, 01h on)
----------1050-------------------------------
INT 10 - SCROLOCK.COM - INSTALLATION CHECK
AH = 50h
Return: BX = 1954h if installed
AL = 00 if inactive, nonzero if active
Note: SCROLOCK is a utility supplied with System Enhancement Associates' ARC
SeeAlso: AH=51h
----------105001-----------------------------
INT 10 - VIDEO - AX PC - GET SCREEN COUNTRY CODE
AX = 5001h
Return: BX = 0053h Japan
= other not Japan
SeeAlso: AH=00h,INT 21/AH=38h
----------1051-------------------------------
INT 10 - SCROLOCK.COM - ENABLE/DISABLE
AH = 51h
AL = state
00h disable
nonzero enable
Note: SCROLOCK is a utility supplied with System Enhancement Associates' ARC
SeeAlso: AH=50h"SCROLOCK"
----------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
Note: 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 - INSTALLATION CHECK (Video7 VGA,VEGA VGA)
AX = 6F00h
Return: BX = 5637h ('V7') indicates Video7 VGA/VEGA VGA extensions are present
----------106F01-----------------------------
INT 10 - VIDEO - GET MONITOR INFO (Video7 VGA,VEGA VGA)
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 - GET MODE AND SCREEN RESOLUTION (Video7 VGA, VEGA VGA)
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 - SET VIDEO MODE (Video7 VGA, VEGA EXTENDED EGA/VGA)
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 - SELECT AUTOSWITCH MODE (V7VGA,VEGA VGA)
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 - GET VIDEO MEMORY CONFIGURATION (V7VGA,VEGA VGA)
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 - GET ADDRESS OF VIDEO RAM (TANDY 2000 only)
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 - GET ADDRESS OF INCRAM (TANDY 2000 only)
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 - SCROLL RIGHT PART OR ALL OF SCREEN (TANDY 2000 only)
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 - SCROLL LEFT PART OR ALL OF SCREEN (TANDY 2000 only)
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 - 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 - 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 - 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 data structure
WORD DS:[3] = segment of window's object handle
ES = segment of DESQview data structure for video buffer
AL = current window number
AH = ???
BL = direct screen writes
00h program does not do direct writes
01h program does direct writes, so shadow buffer not usable
BH = ???
CL = current video mode
CH = ???
Note: this function is probably meant for internal use only, due to the magic
value required in DX
SeeAlso: AH=81h
----------108B-------------------------------
INT 10 - Alloy MW386 - FORCE WORKSTATION SCREEN UPDATE
AH = 8Bh
SeeAlso: AH=92h,AH=93h
----------1090-------------------------------
INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION DISPLAY MODE
AH = 90h
Return: AL = current video mode (see AH=00h)
SeeAlso: AH=91h
----------1091-------------------------------
INT 10 - Alloy MW386 - GET PHYSICAL WORKSTATION ADAPTER TYPE
AH = 91h
Return: AL = video adapter type
00h monochrome
01h Hercules monochrome graphics
02h CGA
03h EGA
04h VGA
80h monochrome text terminal
81h Hercules graphics terminal
82h color graphics terminal
Note: types less than 80h do not imply that the current user is on the host
SeeAlso: AH=90h
----------1092-------------------------------
INT 10 - Alloy MW386 - INHIBIT WORKSTATION SCREEN UPDATES
AH = 92h
Note: the terminal will be updated even when screen updates are inhibited if
TTY output is used
SeeAlso: AH=8Bh
----------1093-------------------------------
INT 10 - Alloy MW386 - REDRAW SCREEN
AH = 93h
SeeAlso: AH=8Bh
----------10BF00-----------------------------
INT 10 - VIDEO - Compaq Portable Extensions - SELECT EXTERNAL MONITOR
AX = BF00h
Note: all registers preserved and the internal monitor is blanked
the external monitor becomes the active monitor
SeeAlso: AX=BF01h
----------10BF01-----------------------------
INT 10 - VIDEO - Compaq Portable Extensions - SELECT INTERNAL MONITOR
AX = BF01h
Note: all registers preserved and the external monitor is blanked
the internal monitor becomes the active monitor
SeeAlso: AX=BF00h
----------10BF02-----------------------------
INT 10 - VIDEO - Compaq Portable Extensions - SET MASTER MODE OF CURRENT CTRLR
AX = BF02h
BH = master mode
04h CGA
05h EGA
07h MDA
SeeAlso: AX=BF03h
----------10BF03BX0000-----------------------
INT 10 - VIDEO - Compaq Portable/Systempro Extensions - GET ENVIRONMENT
AX = BF03h
BX = 0000h
Return: BH = active monitor
00h = external
01h = internal
BL = master mode
00h = switchable VDU not present
04h = CGA
05h = EGA
07h = MDA
08h = switchable LCD controller present
CH = 00h (reserved)
CL = switchable VDU mode supported
bit 0 = CGA supported
bits 1,2 = reserved (1)
bit 3 = MDA supported
bits 4-7 = reserved (1)
DH = internal monitor type
00h = none
01h = Dual-mode monitor
02h = 5153 RGB monitor
03h = Compaq Color monitor
04h = 640x400 flat panel
07h = LCD VGA
DL = external monitor type
00h = none
01h = dual-mode monitor
02h = 5153 RGB monitor
03h = Compaq Color monitor
04h = 640x400 flat panel
05h = VGC monochrome
06h = VGC color
SeeAlso: AH=1Ah,AX=BF00h,AX=BF01h,AX=BF02h
----------10BF04-----------------------------
INT 10 - VIDEO - Compaq Portable Extensions - SET MODE SWITCH DELAY
AX = BF04h
BH = new state of delay
00h enabled
01h disabled
SeeAlso: AX=BF05h
----------10BF05-----------------------------
INT 10 - VIDEO - Compaq Systempro Extensions - ENABLE/DISABLE DISPLAY
AX = BF05h
BH = new state of video
00h off
01h on
SeeAlso: AX=BF04h
----------10BF06-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - READ GRAY SCALE TABLE
AX = BF06h
CL = address to be read from gray scale table
Return: AL = bit 3-0 - Value read from gray scale table
CL = address to be read from gray scale table
SeeAlso: AH=12h/BL=33h,AX=BF07h
----------10BF07-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - WRITE GRAY SCALE TABLE
AX = BF07h
CH = value to write to gray scale table
CL = address to be written to gray scale table
SeeAlso: AX=BF06h
----------10BF08-----------------------------
INT 10 - VIDEO - Compaq SLT/286 - WRITE COLOR MIX REGISTERS
AX = BF08h
CH = bits 7-4 - Green weight
bits 3-0 - Blue weight
CL = bits 7-4 - unused
bits 3-0 - Red weight
----------10CC00SI0000-----------------------
INT 10 - VIDEO - UltraVision - GET STATUS (INSTALLATION CHECK)
AX = CC00h
SI = 0000h (if checking version)
Return: CX = ABCDh
AL = Ultravision extensions
00h enabled
FFh disabled
AH = card designator
BX:00F0h -> palette values (for compatibility with NEWFONT)
DX = support for high resolution modes
00h not active
01h active
SI = UltraVision version number (v1.2+), high byte=major,low byte=minor
= unchanged for versions <1.2
SeeAlso: AX=CC01h,AX=CC02h
----------10CC01-----------------------------
INT 10 - VIDEO - UltraVision - DISABLE EXTENSIONS
AX = CC01h
Notes: subsequent BIOS calls will be passed through to previous handler
should be followed immediately by mode set to restore normal EGA/VGA
state
SeeAlso: AX=CC02h
----------10CC02-----------------------------
INT 10 - VIDEO - UltraVision - ENABLE EXTENSIONS
AX = CC02h
Note: should be followed immediately by mode set to restore previous
UltraVision state
SeeAlso: AX=CC01h
----------10CD00-----------------------------
INT 10 - VIDEO - UltraVision - LOAD ULTRAVISION PALETTE (color EGA,VGA)
AX = CD00h
CL = palette table number (01h-07h for v1.x, 01h-0Fh for v2+)
DS:DX -> 16-byte palette register list (colors for registers 00h-0Fh)
Notes: if palette locking is in effect for the current mode, the new colors
will be displayed immediately; otherwise, the system reverts to the
default palette
palette table 0 is reserved for the default palette and cannot be set
UltraVision always sets the border color to black
SeeAlso: AX=CD01h,AX=CD02h
----------10CD01-----------------------------
INT 10 - VIDEO - UltraVision - SET PALETTE LOCKING STATUS (color EGA,VGA)
AX = CD01h
CL = palette locking value
00h none
01h text modes only (02h,03h)
FFh all modes (all standard color text and graphics modes)
Notes: intended for video modes with 16 or fewer colors
SeeAlso: AX=1000h,AX=1002h,AX=CD00h,AX=CD03h
----------10CD02-----------------------------
INT 10 - VIDEO - UltraVision - GET ULTRAVISION PALETTE (EGA,VGA)
AX = CD02h
Return: CL = palette table number
DS:DX -> 17-byte palette register list
DS:SI -> current font names table (see below)
Note: only the font names are valid on monochrome EGA systems
SeeAlso: AX=1009h,AX=CD00h
Format of palette register list:
Offset Size Description
00h 16 BYTEs colors for palette registers 00h through 0Fh
10h BYTE border color
Format of current font names table (v2+):
Offset Size standard EGA HiRes EGA VGA
00h 8 BYTEs N/A F19 font F20 font
08h 8 BYTEs F14 font F14 font F14 font
10h 8 BYTEs N/A F11 font F10 font
18h 8 BYTEs F8 font F8 font F8 font
Format of current font names table (v1.x):
Offset Size HiRes EGA
00h 8 BYTEs F19/F14 font
08h 8 BYTEs F11/F8 font
----------10CD03-----------------------------
INT 10 - VIDEO - UltraVision - GET PALETTE LOCKING STATUS (color EGA,VGA)
AX = CD03h
Return: CL = palette locking value
00h none
01h text modes only
FFh all modes
SeeAlso: AX=CD01h
----------10CD04-----------------------------
INT 10 - VIDEO - UltraVision - GET UltraVision TEXT MODE (EGA,VGA)
AX = CD04h
Return: AL = mode number
11h 80x25
12h 80x43, 80x50
13h 80x34, 80x36
14h 80x60, 80x63
19h 94x25
1Ah 94x43, 94x50
1Bh 94x36
1Ch 94x63
21h 108x25
22h 108x43, 108x50
23h 107x34, 108x36
24h 108x60, 108x63
31h 120x25
32h 120x43, 120x50
33h 132x25
34h 132x44, 132x50
39h 120x36
3Ah 120x63
3Bh 132x36
3Ch 132x60
SeeAlso: AH=0Fh,AX=CC00h,AH=CDh
----------10CD05-----------------------------
INT 10 - VIDEO - UltraVision - SET CURSOR TYPE (EGA,VGA)
AX = CD05h
CL = type
00h line cursor
FFh box cursor
Note: sets default cursor type for text-based programs
SeeAlso: AH=01h,AX=CD06h
----------10CD06-----------------------------
INT 10 - VIDEO - UltraVision - GET CURSOR TYPE (EGA,VGA)
AX = CD06h
Return: CL = type
00h line cursor
FFh box cursor
SeeAlso: AH=03h,AX=CD05h
----------10CD07-----------------------------
INT 10 - VIDEO - UltraVision v1.2+ - SET UNDERLINE STATUS (EGA,VGA)
AX = CD07h
CL = hardware underline status
00h off (color systems only)
01h underline below characters
02h strike through characters
BL = foreground color for normal text (FFh = current)
BH = foreground color for bright text (FFh = current)
Return: CL = hardware underline status
BL = current foreground color for normal text
BH = current foreground color for bright text
Notes: when underline or strikeout is enabled in color text modes, the
specified colors will be assigned temporarily to colors 01h and 09h,
allowing affected text to match non-underlined text. The color
remapping uses values from the current onscreen palette regardless
of the palette locking status (see AX=CD01h)
specify the standard colors (BL=01h,BH=09h) to enable underline or
strikeout without color remapping
SeeAlso: AX=CD08h
----------10CD08-----------------------------
INT 10 - VIDEO - UltraVision v1.2+ - GET UNDERLINE STATUS (EGA,VGA)
AX = CD08h
Return: CL = hardware underline status (see AX=CD07h)
BL = foreground color for normal text
BH = foreground color for bright text
Note: only CL is valid on monochrome EGA systems
SeeAlso: AX=CD07h
----------10CD10-----------------------------
INT 10 - VIDEO - UltraVision - LOAD USER FONT (EGA,VGA)
AX = CD10h
BH = bytes per character (08h,0Ah,0Bh,0Eh,13h,14h)
CX = ABCDh load 9xN alternate font (v2+)
else number of characters to load
DX = character offset into font table
DS:SI -> 8-byte ASCII font name
ES:BP -> font definitions
Return: AX = FFFFh if invalid font parameters
Notes: loads the designated characters into UltraVision's resident font area
should be followed by a video mode set to reload character generator
SeeAlso: AX=1100h
----------10CD-------------------------------
INT 10 - VIDEO - UltraVision - SET ULTRAVISION TEXT MODE (EGA,VGA)
AH = CDh
AL = text mode number (see AX=CD04h)
Return: AX = CDCDh if invalid mode
SeeAlso: AX=CD04h
----------10EF-------------------------------
INT 10 - VIDEO - MSHERC.COM - INSTALLATION CHECK???
AH = EFh
Return: DL = video adapter type
00h original Hercules
01h ??? \ one is probably Hercules Plus, the other
02h ??? / Hercules InColor
FFh non-Hercules
DH = memory mode byte
01h "half" mode
03h "full" mode
Note: MSHERC.COM is a support program for the Microsoft Quick languages which
makes their graphics libraries compatible with a Hercules card by
adding video modes 08h and 88h, and supporting text in the new
graphics modes. While in mode 08h or 88h, INT 10 supports the
Hercules card much like a CGA.
----------10F0-------------------------------
INT 10 - EGA Register Interface Library - READ ONE REGISTER
AH = F0h
BL = register number
BH = 00h
DX = group index
Pointer/data chips
00h CRT Controller (25 reg) 3B4h mono modes, 3D4h color modes
08h Sequencer (5 registers) 3C4h
10h Graphics Controller (9 registers) 3CEh
18h Attribute Controller (20 registers) 3C0h
Single registers
20h Miscellaneous Output register 3C2h
28h Feature Control register (3BAh mono modes, 3DAh color modes)
30h Graphics 1 Position register 3CCh
38h Graphics 2 Position register 3CAh
Return: BL = data
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AH=F1h,AH=F2h,INT 2F/AX=BC00h
----------10F1-------------------------------
INT 10 - EGA Register Interface Library - WRITE ONE REGISTER
AH = F1h
DX = group index (see AH=F0h)
if single register:
BL = value to write
otherwise
BL = register number
BH = value to write
Return: BL = data
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AX=7F05h,AH=F0h,AH=F3h
----------10F2-------------------------------
INT 10 - EGA Register Interface Library - READ REGISTER RANGE
AH = F2h
CH = starting register number
CL = Number of registers (>1)
DX = group index
00h CRTC (3B4h mono modes, 3D4h color modes)
08h Sequencer 3C4h
10h Graphics Controller 3CEh
18h Attribute Controller 3C0h
ES:BX -> buffer, CL bytes
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AH=F0h,AH=F3h
----------10F3-------------------------------
INT 10 - EGA Register Interface Library - WRITE REGISTER RANGE
AH = F3h
CH = starting register
CL = number of registers (>1)
DX = group index (see AH=F2h)
ES:BX -> buffer, CL bytes
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AX=7F05h,AH=F1h,AH=F2h
----------10F4-------------------------------
INT 10 - EGA Register Interface Library - READ REGISTER SET
AH = F4h
CX = number of registers to read (>1)
ES:BX -> table of records (see below)
Return: register values in table filled in
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AH=F0h,AH=F2h,AH=F5h
Format of entries in table of register records:
Offset Size Description
00h WORD group index
Pointer/data chips
00h CRTC (3B4h mono modes, 3D4h color modes)
08h Sequencer 3C4h
10h Graphics Controller 3CEh
18h Attribute Controller 3C0h
Single registers
20h Miscellaneous Output register 3C2h
28h Feature Control register (3BAh mono modes, 3DAh color)
30h Graphics 1 Position register 3CCh
38h Graphics 2 Position register 3CAh
02h BYTE register number (0 for single registers)
03h BYTE register value
----------10F5-------------------------------
INT 10 - EGA Register Interface Library - WRITE REGISTER SET
AH = F5h
CX = number of registers to write (>1)
ES:BX -> table of records (see AH=F4h)
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AX=7F05h,AH=F1h,AH=F3h,AH=F4h
----------10F6------------------------------
INT 10 - EGA Register Interface Library - REVERT TO DEFAULT REGISTERS
AH = F6h
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AH=F7h
----------10F7------------------------------
INT 10 - EGA Register Interface Library - DEFINE DEFAULT REGISTER TABLE
AH = F7h
DX = port number
Pointer/data chips
00h CRTC (3B4h mono modes, 3D4h color modes)
08h Sequencer 3C4h
10h Graphics Controller 3CEh
18h Attribute Controller 3C0h
Single registers
20h Miscellaneous Output register 3C2h
28h Feature Control register (3BAh mono modes, 3DAh color modes)
30h Graphics 1 Position register 3CCh
38h Graphics 2 Position register 3CAh
ES:BX -> table of one-byte entries, one byte to be written to each
register
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AH=F6h
----------10FA--BX0000----------------------
INT 10 - EGA Register Interface Library - INTERROGATE DRIVER
AH = FAh
BX = 0000h
Return: BX = 0000h if mouse driver not present
ES:BX -> EGA Register Interface version number, if present:
byte 0 = major release number
byte 1 = minor release number
Note: provided by the Microsoft Mouse driver, OS/2 compatibility box, and
others
SeeAlso: AH=F6h,INT 2F/AX=BC00h
----------10FA------------------------------
INT 10 - FASTBUFF.COM - INSTALLATION CHECK
AH = FAh
Return: AX = 00FAh if installed
ES = segment of resident code
Note: FASTBUFF.COM is a keyboard speedup/screen blanking utility by David
Steiner
----------10FE------------------------------
INT 10 - TopView - GET SHADOW BUFFER
AH = FEh
ES:DI -> assumed video buffer
B800h:0000h color text/CGA graphics, B000h:0000h mono text,
or A000h:0000h EGA/VGA graphics (RSIS environments only)
Return: ES:DI -> actual video buffer for calling process
Notes: if no multitasker or RSIS-compliant environment is installed, ES:DI is
returned unchanged; RSIS is the Relocated Screen Interface
Specification
for display pages other than 0, use AH=05h and AH=0Fh to determine
whether a particular page exists
TopView requires a call to AH=FFh to notify it that the screen has
changed; DESQview will check for changes itself until the first call
to AH=FFh
SeeAlso: AH=05h,AH=FFh,INT 15/AX=1024h,INT 21/AH=2Bh"DESQview"
----------10FF-------------------------------
INT 10 - TopView - UPDATE SCREEN FROM SHADOW BUFFER
AH = FFh
CX = number of consecutive changed characters
ES:DI -> first changed character in shadow buffer
Notes: avoid CX=0000h
DESQview will discontinue the automatic screen updating initiated by
AH=FEh after this call
SeeAlso: AH=FEh
----------10FF-------------------------------
INT 10 - DJ GO32.EXE 80386+ DOS extender - VIDEO EXTENSIONS
AH = FFh
AL = video mode
00h 80x25 text
01h default text
02h CXxDX text
03h biggest text
04h 320x200 graphics
05h default graphics
06h CXxDX graphics
07h biggest non-interlaced graphics
08h biggest graphics
SeeAlso: AH=00h,INT 21/AH=FFh"GO32"
----------10FF00-----------------------------
INT 10 - CARBON COPY PLUS v5.0 - CHECK IF CC CONNECTED TO CCHELP
AX = FF00h
Return: BL = 00h not connected
= 01h connected
----------10FF01-----------------------------
INT 10 - CARBON COPY PLUS v5.0 - DISCONNECT AND RESET LINE
AX = FF01h
----------10FF02-----------------------------
INT 10 - CARBON COPY PLUS v5.0 - GET LAST PHONE NUMBER DIALED
AX = FF02h
Return: ES:DI -> ASCIZ phone number
----------11---------------------------------
INT 11 - CPU-generated (80486+) - ALIGNMENT CHECK
Bit AC in the EFLAGS register enables this interrupt on a memory reference
on a mis-aligned address when in privilege mode 3.
----------11---------------------------------
INT 11 - BIOS - GET EQUIPMENT LIST
Return: AX = BIOS equipment list word
bits
0 floppy disk(s) installed (see bits 6-7)
1 80x87 coprocessor installed
2,3 number of 16K banks of RAM on motherboard (PC only)
number of 64K banks of RAM on motherboard (XT only)
2 pointing device installed (PS)
3 unused (PS)
4-5 initial video mode
00 EGA, VGA, or PGA
01 40x25 color
10 80x25 color
11 80x25 monochrome
6-7 number of floppies installed less 1 (if bit 0 set)
8 DMA support installed (PCjr, some Tandy 1000s, 1400LT)
9-11 number of serial ports installed
12 game port installed
13 serial printer attached (PCjr)
internal modem installed (PC/Convertible)
14-15 number of parallel ports installed
---Compaq and many other 386/486 machines--
EAX bit 23: page tables set so that Weitek coprocessor addressable in
real mode
bit 24: Weitek math coprocessor present
---Compaq Systempro
EAX bit 25: internal DMA parallel port available
26: IRQ for internal DMA parallel port (if bit 25 set)
0 = IRQ5
1 = IRQ7
27,28: parallel port DMA channel
00 DMA channel 0
01 DMA channel 0 ???
10 reserved
11 DMA channel 3
SeeAlso: INT 12
----------11BC--DX1954-----------------------
INT 11 - BNU FOSSIL - INSTALLATION CHECK
AH = BCh
DX = 1954h
Return: AX = 1954h
ES:DX -> entry point of driver (instead of INT 14)
----------11FFFECXFFFE-----------------------
INT 11 - BACK&FORTH (before v1.62) API
AX = FFFEh
CX = FFFEh
BX = function
00h installation check
Return: AX = 0001h BNFHIGH and BNFLOW both loaded
= 0003h only BNFHIGH loaded
else neither loaded
01h ???
Return: DX:AX -> ???
02h ???
03h ???
04h ???
05h ??? switches current PSP segment and stack if BNFLOW has not
yet announced itself installed
06h ???
Return: AX = ???
SeeAlso: INT 12/AX=FFFEh
----------12---------------------------------
INT 12 - BIOS - GET MEMORY SIZE
Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
Note: this call returns the contents of the word at 0040h:0013h; in PC and
XT, this value is set from the switches on the motherboard
SeeAlso: INT 11
----------12----CX1806-----------------------
INT 12 - KEYBUI v2.0+ - INSTALLATION CHECK
CX = 1806h
Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
CX = 1960h if installed
Note: KEYBUI is a resident keyboard driver by Johan Zwiekhorst which allows
accented characters and box drawing on standard QWERTY keyboards; it
also provides break-to-DOS and screen blanking capabilities
----------12----CX1807-----------------------
INT 12 - PARKER v2.0+ - INSTALLATION CHECK
CX = 1807h
Return: AX = kilobytes of contiguous memory starting at absolute address 00000h
CX = 1961h if installed
Note: PARKER is an optionally-resident hard disk parking program by Johan
Zwiekhorst
----------12FFFECXFFFE-----------------------
INT 12 - Back&Forth v1.62+ - API
AX = FFFEh
CX = FFFEh
BX = function
00h installation check
Return: AX = 0001h installed
else not loaded
02h build program ID list
ES:DI -> buffer of at least 100 bytes, to be filled with words
Return: AX = number of programs defined
ES:DI buffer filled with AX words
03h switch to specified task (task need not be open yet)
DX = two-letter program ID
Return: AX = 0000h if task undefined
04h ???
05h ???
06h get version (undoc)
Return: AX = version * 100 (v1.71 = 00ABh)
07h ???
08h get open tasks (undoc)
ES:DI -> task info buffer (see below)
Return: AX = number of open tasks (max 20)
09h ???
Note: Back & Forth is a task switcher by Progressive Solutions, Inc.
SeeAlso: INT 11/AX=FFFEh
Format of task info buffer:
Offset Size Description
00h 21 BYTEs ASCIZ task name
15h BYTE hotkey shift state (as for INT 16/AH=02h)
16h WORD hotkey scan code
18h WORD program ID
----------1300-------------------------------
INT 13 - DISK - RESET DISK SYSTEM
AH = 00h
DL = drive (if bit 7 is set both hard disks and floppy disks reset)
Return: AH = status (see AH=01h)
Note: forces controller to recalibrate drive heads (seek to track 0)
SeeAlso: AH=0Dh,AH=11h,INT 21/AH=0Dh,INT 4E"TI Professional"
----------1301-------------------------------
INT 13 - DISK - GET STATUS OF LAST OPERATION
AH = 01h
DL = drive (bit 7 set for hard disk)
Return: AH = status of previous operation
00h successful completion
01h invalid function in AH or invalid parameter
02h address mark not found
03h disk write-protected (floppy)
04h sector not found
05h reset failed (hard disk)
06h disk changed (floppy)
07h drive parameter activity failed (hard disk)
08h DMA overrun
09h attempted DMA across 64K boundary
0Ah bad sector detected (hard disk)
0Bh bad track detected (hard disk)
0Ch unsupported track or invalid media
0Dh invalid number of sectors on format (hard disk)
0Eh control data address mark detected (hard disk)
0Fh DMA arbitration level out of range (hard disk)
10h uncorrectable CRC or ECC error on read
11h data ECC corrected (hard disk)
20h controller failure
40h seek failed
80h timeout (not ready)
AAh drive not ready (hard disk)
BBh undefined error (hard disk)
CCh write fault (hard disk)
E0h status register error (hard disk)
FFh sense operation failed (hard disk)
Note: some BIOSes return the status in AL; the PS/2 Model 30/286 returns the
status in both AH and AL
----------1302-------------------------------
INT 13 - DISK - READ SECTOR(S) INTO MEMORY
AH = 02h
AL = number of sectors to read (must be nonzero)
CH = low eight bits of cylinder number
CL = sector number (bits 0-5)
high two bits of cylinder (bits 6-7, hard disk only)
DH = head number
DL = drive number (bit 7 set for hard disk)
ES:BX -> data buffer
Return: CF set on error
if AH = 11h (corrected ECC error), AL = burst length
CF clear if successful
AH = status (see AH=01h)
AL = number of sectors transferred
Notes: errors on a floppy may be due to the motor failing to spin up quickly
enough; the read should be retried at least three times, resetting
the disk with AH=00h between attempts
AWARD AT BIOS extended to handle more than 1024 cylinders by placing
bits 10 and 11 of the cylinder number into bits 6 and 7 of DH
SeeAlso: AH=03h,AH=0Ah
----------1303-------------------------------
INT 13 - DISK - WRITE DISK SECTOR(S)
AH = 03h
AL = number of sectors to write (must be nonzero)
CH = low eight bits of cylinder number
CL = sector number (bits 0-5)
high two bits of cylinder (bits 6-7, hard disk only)
DH = head number
DL = drive number (bit 7 set for hard disk)
ES:BX -> data buffer
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
AL = number of sectors transferred
Notes: errors on a floppy may be due to the motor failing to spin up quickly
enough; the write should be retried at least three times, resetting
the disk with AH=00h between attempts
AWARD AT BIOS extended to handle more than 1024 cylinders by placing
bits 10 and 11 of the cylinder number into bits 6 and 7 of DH
SeeAlso: AH=02h,AH=0Bh
----------1304-------------------------------
INT 13 - DISK - VERIFY DISK SECTOR(S)
AH = 04h
AL = number of sectors to verify (must be nonzero)
CH = low eight bits of cylinder number
CL = sector number (bits 0-5)
high two bits of cylinder (bits 6-7, hard disk only)
DH = head number
DL = drive number (bit 7 set for hard disk)
ES:BX -> data buffer (PC,XT,AT with BIOS prior to 11/15/85)
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
AL = number of sectors verified
Notes: errors on a floppy may be due to the motor failing to spin up quickly
enough; the write should be retried at least three times, resetting
the disk with AH=00h between attempts
this function does not compare the disk with memory, it merely
checks whether the sector's stored CRC matches the data's actual CRC
AWARD AT BIOS extended to handle more than 1024 cylinders by placing
bits 10 and 11 of the cylinder number into bits 6 and 7 of DH
SeeAlso: AH=02h
----------1305-------------------------------
INT 13 - FLOPPY - FORMAT TRACK
AH = 05h
AL = number of sectors to format
CH = track number
DH = head number
DL = drive number
ES:BX -> address field buffer (see below)
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
Notes: on AT or higher, call AH=17h first
the number of sectors per track is read from the diskette parameter
table pointed at by INT 1E
SeeAlso: AH=05h"FIXED",AH=17h,AH=18h,INT 1E
Format of address field buffer entry (one per sector in track):
Offset Size Description
00h BYTE track number
01h BYTE head number (0-based)
02h BYTE sector number
03h BYTE sector size (00h=128 bytes, 01h=256 bytes, 02h=512, 03h=1024)
----------1305-------------------------------
INT 13 - FIXED DISK - FORMAT TRACK
AH = 05h
AL = interleave value (XT-type controllers only)
ES:BX = 512-byte format buffer
the first 2*(sectors/track) bytes contain F,N for each sector
F = 00h for good sector, 80h for bad sector
N = sector number
CH = cylinder number (bits 8,9 in high bits of CL)
CL = high bits of cylinder number (bits 7,6)
DH = head
DL = drive
Return: AH = status code (see AH=01h)
Notes: AWARD AT BIOS extended to handle more than 1024 cylinders by placing
bits 10 and 11 of the cylinder number into bits 6 and 7 of DH
for XT-type controllers on an AT or higher, AH=0Fh should be called
first
SeeAlso: AH=05h"FLOPPY",AH=06h,AH=07h,AH=0Fh,AH=18h,AH=1Ah
----------1306-------------------------------
INT 13 - FIXED DISK - FORMAT TRACK AND SET BAD SECTOR FLAGS (XT,PORT)
AH = 06h
AL = interleave value
CH = cylinder number (bits 8,9 in high bits of CL)
CL = sector number
DH = head
DL = drive
Return: AH = status code (see AH=01h)
Note: AWARD AT BIOS extended to handle more than 1024 cylinders by placing
bits 10 and 11 of the cylinder number into bits 6 and 7 of DH
----------1307-------------------------------
INT 13 - FIXED DISK - FORMAT DRIVE STARTING AT GIVEN TRACK (XT,PORT)
AH = 07h
AL = interleave value (XT only)
ES:BX = 512-byte format buffer (see AH=05h)
CH = cylinder number (bits 8,9 in high bits of CL)
CL = sector number
DH = head
DL = drive
Return: AH = status code (see AH=01h)
Note: AWARD AT BIOS extended to handle more than 1024 cylinders by placing
bits 10 and 11 of the cylinder number into bits 6 and 7 of DH
SeeAlso: AH=1Ah
----------1308-------------------------------
INT 13 - DISK - GET DRIVE PARAMETERS (PC,XT286,CONV,PS,ESDI,SCSI)
AH = 08h
DL = drive (bit 7 set for hard disk)
Return: CF set on error
AH = status (07h) (see AH=01h)
CF clear if successful
AH = 00h
BL = drive type (AT/PS2 floppies only)
01h 360K
02h 1.2M
03h 720K
04h 1.44M
CH = low eight bits of maximum cylinder number
CL = maximum sector number (bits 5-0)
high two bits of maximum cylinder number (bits 7-6)
DH = maximum head number
DL = number of drives
ES:DI -> drive parameter table (floppies only)
Notes: may return successful even though specified drive is greater than the
number of attached drives of that type (floppy/hard); check DL to
ensure validity
for systems predating the IBM AT, this call is only valid for hard
disks, as it is implemented by the hard disk BIOS rather than the
ROM BIOS
Toshiba laptops with HardRAM return DL=02h when called with DL=80h,
but fail on DL=81h. The BIOS data at 40h:75h correctly reports 01h.
SeeAlso: AH=15h,INT 1E,INT 41
----------1309-------------------------------
INT 13 - HARD DISK - INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (AT,PS)
AH = 09h
DL = drive (80h for first, 81h for second)
Return: CF clear if successful
CF set on error
AH = status (see AH=01h)
Notes: on the PC and XT, this function uses the parameter table pointed at by
INT 41
on the AT and later, this function uses the parameter table pointed at
by INT 41 if DL=80h, and the parameter table pointed at by INT 46 if
DL=81h
SeeAlso: INT 41,INT 46
----------130A-------------------------------
INT 13 - HARD DISK - READ LONG SECTOR(S) (AT and later)
AH = 0Ah
AL = number of sectors
CH = low eight bits of cylinder number
CL = sector number (bits 5-0)
high two bits of cylinder number (bits 7-6)
DH = head number
DL = drive number (80h = first, 81h = second)
ES:BX -> data buffer
Return: CF clear if successful
CF set on error
AH = status (see AH=01h)
AL = number of sectors transferred
Notes: this function reads in four to seven bytes of error-correcting code
along with each sector's worth of information
data errors are not automatically corrected, and the read is aborted
after the first sector with an ECC error
used for diagnostics only on PS/2 systems
SeeAlso: AH=02h,AH=0Bh
----------130B-------------------------------
INT 13 - HARD DISK - WRITE LONG SECTOR(S) (AT and later)
AH = 0Bh
AL = number of sectors
CH = low eight bits of cylinder number
CL = sector number (bits 5-0)
high two bits of cylinder number (bits 7-6)
DH = head number
DL = drive number (80h = first, 81h = second)
ES:BX -> data buffer
Return: CF clear if successful
CF set on error
AH = status (see AH=01h)
AL = number of sectors transferred
Notes: each sector's worth of data must be followed by four to seven bytes of
error-correction information
used for diagnostics only on PS/2 systems
SeeAlso: AH=03h,AH=0Ah
----------130C-------------------------------
INT 13 - HARD DISK - SEEK TO CYLINDER
AH = 0Ch
CH = low eight bits of cylinder number
CL = sector number (bits 5-0)
high two bits of cylinder number (bits 7-6)
DH = head number
DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
SeeAlso: AH=00h,AH=02h,AH=0Ah
----------130D-------------------------------
INT 13 - HARD DISK - RESET HARD DISKS
AH = 0Dh
DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
Notes: reinitializes the hard disk controller, resets the specified drive's
parameters, and recalibrates the drive's heads (seek to track 0)
not for PS/2 ESDI drives
SeeAlso: AH=00h,INT 21/AH=0Dh
----------130E-------------------------------
INT 13 - HARD DISK - READ SECTOR BUFFER (XT only)
AH = 0Eh
DL = drive number (80h = first, 81h = second hard disk)
ES:BX -> buffer
Return: CF set on error
CF clear if successful
AH = status code (see AH=01h)
Notes: transfers controller's sector buffer. No data is read from the drive
used for diagnostics only on PS/2 systems
SeeAlso: AH=0Ah
----------130F-------------------------------
INT 13 - HARD DISK - WRITE SECTOR BUFFER (XT only)
AH = 0Fh
DL = drive number (80h = first, 81h = second hard disk)
ES:BX -> buffer
Return: CF set on error
CF clear if successful
AH = status code (see AH=01h)
Notes: does not write data to the drive
should be called before formatting to initialize an XT-type
controller's sector buffer
used for diagnostics only on PS/2 systems
SeeAlso: AH=0Bh
----------1310-------------------------------
INT 13 - HARD DISK - CHECK IF DRIVE READY
AH = 10h
DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
----------1311-------------------------------
INT 13 - HARD DISK - RECALIBRATE DRIVE
AH = 11h
DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
Note: causes hard disk controller to seek the specified drive to cylinder 0
SeeAlso: AH=00h,AH=0Ch,AH=19h"FIXED DISK"
----------1312-------------------------------
INT 13 - HARD DISK - CONTROLLER RAM DIAGNOSTIC (XT,PS)
AH = 12h
DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
CF clear if successful
AH = status code (see AH=01h)
SeeAlso: AH=13h,AH=14h
----------1312-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - STOP SCSI DISK
AH = 12h
DL = hard drive ID
Return: CF set on error
AH = status code (see AH=01h)
Notes: available at least on the TMC-870 8-bit SCSI controller BIOS v6.0A
if the given drive is a SCSI device, the SCSI Stop Unit command is sent
and either "Disk prepared for shipping" or "Disk Stop command failed"
is displayed
----------1313-------------------------------
INT 13 - HARD DISK - DRIVE DIAGNOSTIC (XT,PS)
AH = 13h
DL = drive number (80h = first, 81h = second hard disk)
Return: CF set on error
CF clear if successful
AH = status code (see AH=01h)
SeeAlso: AH=12h,AH=14h
----------1314-------------------------------
INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC
AH = 14h
Return: CF set on error
CF clear if successful
AH = status code (see AH=01h)
SeeAlso: AH=12h,AH=13h
----------1315-------------------------------
INT 13 - DISK - GET DISK TYPE (XT 1/10/86 or later,XT286,AT,PS)
AH = 15h
DL = drive number (bit 7 set for hard disk)
Return: CF clear if successful
AH = type code
00h no such drive
01h floppy without change-line support
02h floppy with change-line support
03h hard disk
CX:DX = number of 512-byte sectors
CF set on error
AH = status (see AH=01h)
SeeAlso: AH=08h,AH=16h,AH=17h,AH=19h"SCSI"
----------1316-------------------------------
INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XT 1/10/86 or later,XT286,AT,PS)
AH = 16h
DL = drive number
Return: CF clear if change line inactive
AH = 00h (disk not changed)
CF set if change line active
AH = 06h change line active or not supported
= 80h drive not ready or not present
Note: call AH=15h first to determine whether the drive supports a change
line
SeeAlso: AH=15h
----------1317-------------------------------
INT 13 - FLOPPY DISK - SET DISK TYPE FOR FORMAT (AT,PS)
AH = 17h
AL = format type
01h = 320/360K disk in 360K drive
02h = 320/360K disk in 1.2M drive
03h = 1.2M disk in 1.2M drive
04h = 720K disk in 720K drive
DL = drive number
Return: CF set on error
CF clear if successful
AH = status (see AH=01h)
Note: this function does not handle 1.44M drives; use AH=18h instead
SeeAlso: AH=15h,AH=18h
----------1318-------------------------------
INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (AT model 3x9,XT2,XT286,PS)
AH = 18h
DL = drive number
CH = lower 8 bits of number of tracks
CL = sectors per track (bits 0-5)
top 2 bits of number of tracks (bits 6,7)
Return: AH = status
00h requested combination supported
01h function not available
0Ch not supported or drive type unknown
80h there is no disk in the drive
ES:DI -> 11-byte parameter table
SeeAlso: AH=05h,AH=07h,AH=17h
----------1318-------------------------------
INT 13 - Future Domain SCSI BIOS - GET SCSI CONTROLLER INFORMATION
AH = 18h
DL = hard drive ID
Return: CF set on error
AH = status code (see AH=01h)
CF clear if successful
AX = 4321h (magic number???)
BH = number of SCSI drives connected
BL = SCSI device number for specified drive
CX = 040Ah (magic number???)
Note: also sets an internal flag (non-resettable) which prevents some
controller messages from being displayed and allows writes to
removable devices
SeeAlso: AH=1Bh"SCSI"
----------1319-------------------------------
INT 13 - FIXED DISK - PARK HEADS (XT286,PS)
AH = 19h
DL = drive
Return: CF set on error
AH = status (see AH=01h)
SeeAlso: AH=11h
----------1319-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - REINITIALIZE DRIVE
AH = 19h
DL = hard drive ID
Return: CF set on error
AH = status code (see AH=01h)
CF clear if successful
AH = disk type (03h = fixed disk)
CX:DX = number of 512-byte sectors
Notes: sends SCSI Read Capacity command to get number of logical blocks and
adjusts the result for 512-byte sectors
displays either "Error in Read Capacity Command" or "nnn Bytes per
sector" (nnn=256 or 512, the only sizes supported in the translation
code)
should probably be called when a removable device has its media changed
returns the same values as AH=15h
SeeAlso: AH=15h,AH=1Ah
----------131A-------------------------------
INT 13 - ESDI FIXED DISK - FORMAT UNIT (PS)
AH = 1Ah
AL = defect table count
CL = format modifiers
bit 4: generate periodic interrupt
bit 3: perform surface analysis
bit 2: update secondary defect map
bit 1: ignore secondary defect map
bit 0: ignore primary defect map
DL = drive
ES:BX -> defect table
Return: CF set on error
AH = status (see AH=01h)
Note: if periodic interrupt selected, INT 15h/AH=0Fh is called after each
cylinder is formatted
SeeAlso: AH=07h,INT 15/AH=0Fh
----------131A-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET SCSI PARTIAL MEDIUM CAPACITY
AH = 1Ah
CH = track (bits 8,9 in high bits of CL)
CL = sector (01h to number of sectors/track for drive)
DH = head
DL = hard drive ID
Return: CF set on error
AH = status code (see AH=01h)
CX:DX = logical block number of last quickly-accessible block after
given block
Note: sends SCSI Read Capacity command with the PMI bit set to obtain the
logical block address of the last block after which a substantial
delay in data transfer will be encountered (usually the last block
on the current cylinder). No translation to 512 byte sectors is
performed on the result if data is stored on the disk in other than
512 byte sectors.
SeeAlso: AH=15h,AH=19h"SCSI"
----------131B-------------------------------
INT 13 - ESDI FIXED DISK - GET MANUFACTURING HEADER
AH = 1Bh
AL = number of record
DL = drive
ES:BX -> buffer for manufacturing header (defect list)
Return: CF set on error
AH = status
Note: manufacturing header format (Defect Map Record format) can be found
in IBM 70MB, 115MB Fixed Disk Drives Technical Reference
----------131B-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO SCSI DISK INFO BLOCK
AH = 1Bh
DL = hard drive ID
Return: CF set on error
AH = status code (see AH=01h)
CF clear if successful
ES:BX -> SCSI disk information block
Note: also sets a non-resettable flag which prevents some controller messages
from being displayed
SeeAlso: AH=18h"SCSI",AH=1Ch"SCSI"
Format of SCSI disk information block:
Offset Size Description
00h BYTE drive physical information
bit 0: ???
bit 1: device uses parity
bit 2: 256 bytes per sector instead of 512
bit 3: don't have capacity yet???
bit 4: disk is removable
bit 5: logical unit number is not present
01h WORD translated number of cylinders
03h BYTE translated number of heads
04h BYTE translated number of sectors per track (17, 34, or 63)
05h BYTE drive address
bits 0-2: logical unit number
bits 3-5: device number
06h BYTE 01h at initialization
07h BYTE sense code byte 00h, or extended sense code byte 0Ch
08h BYTE 00h
09h BYTE 00h or extended sense code byte 02h (sense key)
0Ah BYTE 00h
0Bh 10 BYTEs copy of Command Descriptor Block (CDB)
15h DWORD translated number of sectors on device
----------131C-------------------------------
INT 13 - Future Domain SCSI CONTROLLER - GET POINTER TO FREE CONTROLLER RAM
AH = 1Ch
DL = hard drive ID (any valid SCSI hard disk)
Return: CF set on error
AH = status code (see AH=01h)
CF clear if successful
ES:BX -> first byte of free RAM on controller
Notes: the Future Domain TMC-870 contains 1024 bytes of RAM at offsets 1800h
to 1BFFh on-bard the controller for storing drive information and
controller status; ES:BX points to the first byte available for other
uses
ES contains the segment at which the controller resides; the
controller's two memory-mapped I/O ports are at offsets 1C00h, 1E00h
SeeAlso: AH=1Bh"SCSI"
----------131C0A-----------------------------
INT 13 - ESDI FIXED DISK - GET DEVICE CONFIGURATION
AX = 1C0Ah
DL = drive
ES:BX -> buffer for device configuration (drive physical parameter)
Return: CF set on error
AH = status
Note: device configuration format can be found in IBM ESDI Fixed Disk Drive
Adapter/A Technical Reference
----------131C0B-----------------------------
INT 13 - ESDI FIXED DISK - GET ADAPTER CONFIGURATION
AX = 1C0Bh
ES:BX -> buffer for adapter configuration
Return: CF set on error
AH = status
SeeAlso: AX=1C0Ch
----------131C0C-----------------------------
INT 13 - ESDI FIXED DISK - GET POS INFORMATION
AX = 1C0Ch
ES:BX -> POS information
Return: CF set on error
AH = status
SeeAlso: AX=1C0Bh
----------131C0E-----------------------------
INT 13 - ESDI FIXED DISK - TRANSLATE RBA TO ABA
AX = 1C0Eh
CH = low 8 bits of cylinder number
CL = sector number, high two bits of cylinder number in bits 6 and 7
DH = head number
DL = drive number
ES:BX -> ABA number
Return: CF set on error
AH = status
Note: ABA (absolute block address) format can be found in IBM ESDI Adapter
Technical Reference by using its Device Configuration Status Block
----------131D-------------------------------
INT 13 - IBMCACHE.SYS - CACHE STATUS
AH = 1Dh
AL = subfunction
01h get status record
DL = drive???
Return: ES:BX -> status record
CF set on error
AH = error code
02h set cache status
ES:BX -> status record
DL = drive???
Return: CF set on error
Format of status record:
Offset Size Description
00h DWORD total number of read requests
04h DWORD total number of hits
08h DWORD number of physical disk reads
0Ch DWORD total number of sectors requested by physical disk reads
10h 6 bytes ???
16h DWORD pointer to start of error list
1Ah DWORD pointer to end of error list
1Eh WORD ???
20h BYTE using extended memory if nonzero
21h BYTE ???
22h 4 BYTEs ASCII version number
26h WORD cache size in K
28h WORD sectors per page
Format of error list:
Offset Size Description
00h DWORD relative block address of bad page
04h BYTE drive
05h BYTE sector bit-map
06h WORD next error
----------1320-------------------------------
INT 13 - DISK - ??? (Western Digital "Super BIOS")
AH = 20h
???
Return: ???
Note: seems to return some kind of status
----------1320FF-----------------------------
INT 13 - QCACHE - DISMOUNT
AX = 20FFh
Return: ???
----------1321-------------------------------
INT 13 - QCACHE - FLUSH CACHE
AH = 21h
Return: ???
SeeAlso: AH=25h,AH=2Eh
----------1322-------------------------------
INT 13 - QCACHE - ENABLE/DISABLE CACHE
AH = 22h
AL = 00h disable cache
01h enable cache
----------1324-------------------------------
INT 13 - QCACHE - SET SECTORS
AH = 24h
BX = number of sectors
Return: ???
----------1325-------------------------------
INT 13 - QCACHE - SET FLUSH INTERVAL
AH = 25h
BC = interval
Return: ???
SeeAlso: AH=21h,AH=2Eh
----------1327--BX0000-----------------------
INT 13 - QCACHE - INSTALLATION CHECK
AH = 27h
BX = 0000h
Return: BX nonzero if installed
----------132A-------------------------------
INT 13 - QCACHE - SET BUFFER SIZE
AH = 2Ah
AL = buffer size
Return: ???
----------132C-------------------------------
INT 13 - QCACHE - SET BUFFERED WRITES
AH = 2Ch
AL = state
00h disable
01h enable
Return: ???
SeeAlso: AH=2Dh
----------132D-------------------------------
INT 13 - QCACHE - SET BUFFERED READ
AH = 2Dh
AL = state
00h disable
01h enable
Return: ???
SeeAlso: AH=2Ch
----------132E-------------------------------
INT 13 - QCACHE - SET FLUSH COUNT
AH = 2Eh
BX = flush count
Return: ???
SeeAlso: AH=21h,AH=25h
----------1330-------------------------------
INT 13 - QCACHE - GET INFO
AH = 30h
AL = what to get
00h system info
01h drive info
DS:DX -> buffer for info
Return: ???
----------1370-------------------------------
INT 13 - Priam EDVR.SYS DISK PARTITIONING SOFTWARE???
AH = 70h
???
Return: ???
Note: Priam's EDISK.EXE (FDISK replacement) and EFMT.EXE (low-level
formatting program) make this call, presumably to EDVR.SYS (the
partitioning driver)
SeeAlso: AH=ADh
----------1375-------------------------------
INT 13 - ???
AH = 75h
???
Return: AH = ???
???
Note: intercepted by PC-Cache (v5.1 only)
----------1376-------------------------------
INT 13 - ???
AH = 76h
???
Return: AH = ???
???
Note: intercepted by PC-Cache (v5.1 only)
----------1380--CX6572-----------------------
INT 13 - FAST! - API
AH = 80h
CX = 6572h
DX = 1970h
ES:BX -> data structure (see below)
AL = function
01h ???
04h ???
05h ???
06h installation check
Return: AX = 1965h if installed
07h ???
09h ???
0Ah ???
0Bh ???
0Ch set ??? flag
0Dh clear ??? flag
Return: AH = 00h if successful (except function 06h)
Format of data structure:
Offset Size Description
00h DWORD pointer to 19-byte signature string
13h 07h 06h 08h 11h 18h 0Fh 0Eh 02h 18h 13h 08h 0Bh 08h 01h 00h
04h 08h 15h (v4.04)
04h ??? ???
----------1381--SI4358-----------------------
INT 13 - Super PC Kwik/PC-Cache 5.x - ???
AH = 81h
SI = 4358h
???
Return: ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
returns immediately in PC-Cache v5.x
----------1382--SI4358-----------------------
INT 13 - Super PC Kwik/PC-Cache 5.x - ???
AH = 82h
SI = 4358h
???
Return: AL = ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
SeeAlso: AH=84h
----------1383--SI4358-----------------------
INT 13 - Super PC Kwik/PC-Cache 5.x - ???
AH = 83h
SI = 4358h
AL = ???
ES:BX -> ???
???
Return: ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
SeeAlso: AH=85h
----------1384--SI4358-----------------------
INT 13 - Super PC Kwik/PC-Cache 5.x - ???
AH = 84h
SI = 4358h
AL = ???
???
Return: AL = ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
SeeAlso: AH=82h
----------1385--SI4358-----------------------
INT 13 - Super PC Kwik/PC-Cache 5.x - ???
AH = 85h
SI = 4358h
AL = ???
DL = ???
???
Return: ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
SeeAlso: AH=83h
----------138EED-----------------------------
INT 13 - HyperDisk v4.01+ - ???
AX = 8EEDh
???
Return: ???
Note: HyperDisk is a shareware disk cache by HyperWare (Roger Cross)
SeeAlso: AX=8EEEh,AX=8EEFh,AH=EEh,INT 2F/AH=DFh
----------138EEE-----------------------------
INT 13 - HyperDisk v4.01+ - ???
AX = 8EEEh
Return: CF set
AX = CS of HyperDisk resident code
???
Note: identical to AX=8EEFh in HYPERDKX v4.21-4.30
SeeAlso: AX=8EEDh,AX=8EEFh,AH=EEh
----------138EEF-----------------------------
INT 13 - HyperDisk v4.01+ - ???
AX = 8EEFh
Return: CF set
AX = CS of HyperDisk resident code
???
Note: identical to AX=8EEEh in HYPERDKX v4.21-4.30
SeeAlso: AX=8EEDh,AX=8EEEh,AH=EEh
----------13A0--SI4358-----------------------
INT 13 - Super PC Kwik - GET RESIDENT CODE SEGMENT
AH = A0h
SI = 4358h
Return: AX = segment of resident code
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
SeeAlso: INT 16/AX=FFA5h/CX=1111h
----------13A1--SI4358-----------------------
INT 13 - Super PC Kwik - FLUSH CACHE
AH = A1h
SI = 4358h
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
SeeAlso: INT 16/AX=FFA5h/CX=FFFFh
----------13A2--SI4358-----------------------
INT 13 - Super PC Kwik - ???
AH = A2h
SI = 4358h
???
Return: ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
----------13A5-------------------------------
INT 13 - Super PC Kwik - ???
AH = A5h
SI = ???
Return: AX = ???
SI = ???
Note: called when a program terminates but stays resident (see INT 21/AH=31h)
----------13AD-------------------------------
INT 13 - Priam HARD DISK CONTROLLER???
AH = ADh
???
Return: ???
Note: this call is made from Priam's EFMT.EXE (low-level formatter), probably
to check the ROM type on the controller for their hard disk kits
SeeAlso: AH=70h
----------13B0--SI4358-----------------------
INT 13 - Super PC Kwik - ???
AH = B0h
SI = 4358h
???
Return: ???
Note: PC Tools PC-Cache 5.x is an OEM version of Super PC Kwik, and thus
supports this call
----------13EE-------------------------------
INT 13 - SWBIOS - SET 1024 CYLINDER FLAG
AH = EEh
DL = drive number (80h, 81h)
Return: CF clear
AH = 00h
Notes: the following INT 13 call will interpret the cylinder number as 1024
less than the desired cylinder
flag cleared by all INT 13 calls except AH=EEh
SWBIOS is a TSR by Ontrack Computer Systems; Disk Manager also supports
these calls
also supported by HyperDisk v4.01+ and PC-Cache v5.5+, in order to allow
caching of drives using SWBIOS to access more than 1024 cylinders
SeeAlso: AH=F9h,AH=FEh,INT 16/AX=FFA5h/CX=1111h,INT 2F/AH=DFh
----------13F9-------------------------------
INT 13 - SWBIOS - INSTALLATION CHECK
AH = F9h
DL = drive number (80h,81h)
Return: CF clear
DX = configuration word
bit 15 set if other SWBIOS extensions available
CF set on error
Note: SWBIOS is a TSR by Ontrack Computer Systems; Disk Manager also supports
these calls
SeeAlso: AH=EEh
----------13FE-------------------------------
INT 13 - SWBIOS - GET EXTENDED CYLINDER COUNT
AH = FEh
DL = drive number (80h, 81h)
Return: CF clear
DX = number of cylinders beyond 1024 on drive
Notes: standard INT 13/AH=08h will return a cylinder count truncated to 1024
BIOS without this extension would return count modulo 1024
SWBIOS is a TSR by Ontrack Computer Systems; Disk Manager also supports
these calls
SeeAlso: AH=EEh
----------14---------------------------------
INT 14 - SERIAL I/O- Digiboard DigiCHANNEL PC/X* Extender INT 14 (XAPCM232.SYS)
Note: the installation check for this driver is to determine whether the
"~DOSXAM~" character device exists
----------1400-------------------------------
INT 14 - SERIAL - INITIALIZE PORT
AH = 00h
AL = port parameters
bits 7-5 data rate (110,150,300,600,1200,2400,4800,9600 bps)
bits 4-3 parity (00 or 10 = none, 01 = odd, 11 = even)
bit 2 stop bits (set = 2, clear = 1)
bits 1-0 data bits (00 = 5, 01 = 6, 10 = 7, 11 = 8)
DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status (see AH=03h)
FFh if error on Digiboard XAPCM232.SYS
AL = modem status (see AH=03h)
Notes: default handler is at F000h:E739h in IBM PC and 100% compatible BIOSes
since the PCjr supports a maximum of 4800 bps, attempting to set 9600
bps will result in 4800 bps
SeeAlso: AH=04h"SERIAL",AH=04h"MultiDOS",AH=05h"SERIAL",AH=81h"COMM-DRV"
SeeAlso: AH=82h"COURIERS",AH=8Ch
----------1400-------------------------------
INT 14 - FOSSIL (Fido/Opus/Seadog Standard Interface Level) - INITIALIZE
AH = 00h
AL = initializing parameters
7 - 6 - 5 4 - 3 2 1 - 0
-BAUD RATE- PARITY STOP WORD
BITS LENGTH
000 19200 bd 00 none 0: 1 00: 5
001 38400 bd 01 odd 1: 2 01: 6
010 300 bd 11 even 10: 7
011 600 bd 11: 8
100 1200 bd
101 2400 bd
110 4800 bd
111 9600 bd (4800 on PCjr)
DX = port number (0-3 or FFh if only performing non-I/O setup)
Return: AH = RS-232 status code bits
0: RDA - input data is available in buffer
1: OVRN - data has been lost
5: THRE - room is available in output buffer
6: TSRE - output buffer empty
AL = modem status bits
3: always 1
7: DCD - carrier detect
SeeAlso: AH=05h"FOSSIL",AH=81h"COMM-DRV",AH=82h"COURIERS"
----------1401-------------------------------
INT 14 - SERIAL - WRITE CHARACTER TO PORT
AH = 01h
AL = character to write
DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH bit 7 clear if successful
AH bit 7 set on error
AH bits 6-0 = port status (see AH=03h)
SeeAlso: AH=02h,AH=0Bh,AH=89h
----------1402-------------------------------
INT 14 - SERIAL - READ CHARACTER FROM PORT
AH = 02h
DX = port number (00h-03h (04h-43h for Digiboard XAPCM232.SYS))
Return: AH = line status (see AH=03h)
AL = received character if AH bit 7 clear
Note: will timeout if DSR is not asserted, even if function 03h returns
data ready
SeeAlso: AH=01h,AH=02h"FOSSIL",AH=84h,AH=FCh
----------1402-------------------------------
INT 14 - FOSSIL - RECEIVE CHARACTER WITH WAIT
AH = 02h
DX = port number (0-3)
Return: AL = character received
AH = 00h
SeeAlso: AH=01h,AH=02h"SERIAL"
----------1403-------------------------------
INT 14 - SERIAL - GET PORT STATUS
AH = 03h
DX = port number (00h-03h) (04h-43h for Digiboard XAPCM232.SYS)
Return: AH = line status
bit 7: timeout
6: transmit shift register empty
5: transmit holding register empty
4: break detected
3: framing error
2: parity error
1: overrun error
0: receive data ready
AL = modem status
bit 7: carrier detect
6: ring indicator
5: data set ready
4: clear to send
3: delta carrier detect
2: trailing edge of ring indicator
1: delta data set ready
0: delta clear to send
SeeAlso: AH=00h,AH=07h"MultiDOS",AH=81h"COURIERS",AX=FD02h
----------1404-------------------------------
INT 14 - SERIAL I/O - EXTENDED INITIALIZE (CONVERTIBLE,PS)
AH = 04h
AL = break status
00h if break
01h if no break
BH = parity
00h no parity
01h odd parity
02h even parity
03h stick parity odd
04h stick parity even
BL = number of stop bits
00h one stop bit
01h two stop bits (1.5 if 5 bit word length)
CH = word length
00h 5 bits
01h 6 bits
02h 7 bits
03h 8 bits
CL = bps rate
00h 110
01h 150
02h 300
03h 600
04h 1200
05h 2400
06h 4800
07h 9600
08h 19200
DX = port number
Return: AX = port status code (see AH=00h)
SeeAlso: AH=00h,AH=1Eh
----------1404-------------------------------
INT 14 - FOSSIL - INITIALIZE DRIVER
AH = 04h
DX = port number
optionally BX=4F50h
ES:CX -> byte to be set upon ^C
Return: AX = 1954h (if successful)
BL = maximum function number supported (excluding 7Eh and above)
BH = revision of FOSSIL supported
DTR is raised
Note: the word at offset 6 in the interrupt handler contains 1954h, and the
following byte contains the maximum function number supported
SeeAlso: AH=05h"FOSSIL",AH=1Ch
----------1404-------------------------------
INT 14 - MultiDOS Plus IODRV - INITIALIZE PORT
AH = 04h
Return: port initialized; if Hayes-compatible modem, a connection has been
established
Note: the port number is stored at offset BEh in the Task Control Block
(see INT 15/AH=13h"MultiDOS")
SeeAlso: AH=00h,AH=05h"MultiDOS",AH=20h"MultiDOS",INT 15/AH=13h"MultiDOS"
----------1404-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE BAUD RATE
AH = 04h
AL = initializing parameters
bits 7-5 unused
bits 4,3: parity (00 none, 01 odd, 11 even)
bit 2: stop bits (0 = one, 1 = two)
bits 1,0: data bits (00 = five, 01 = six, 10 = seven, 11 = eight)
BX = baud rate
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=05h"Digiboard"
----------1405-------------------------------
INT 14 - SERIAL I/O - EXTENDED COMMUNICATION PORT CONTROL (CONVERTIBLE,PS)
AH = 05h
AL = 00h read modem control register
Return: BL = modem control register (see below)
AH = status
AL = 01h write modem control register
BL = modem control register
bit 0: data terminal ready
bit 1: request to send
bit 2: OUT1
bit 3: OUT2
bit 4: LOOP
bits 5-7 reserved
Return: AX = status
DX = port number
SeeAlso: AH=00h,AH=1Fh
----------1405-------------------------------
INT 14 - FOSSIL - DEINITIALIZE DRIVER
AH = 05h
DX = port number
Return: none
DTR is not affected
SeeAlso: AH=00h,AH=04h"FOSSIL",AH=1Dh,AH=8Dh
----------1405-------------------------------
INT 14 - MultiDOS Plus IODRV - READ CHARACTER FROM PORT
AH = 05h
AL = timeout in seconds (00h = never)
Return: AL = status
00h successful
AH = character read
01h read error
02h timed out
other modem status (CTS, DSR) changed
Note: the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=02h,AH=04h"MultiDOS",AH=06h"MultiDOS",AH=22h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
----------1405-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CHANGE PROTOCOL
AH = 05h
AL = protocol
bits 7-4 unused
bit 3: RTS/CTS
bit 2: DSR
bits 1,0: XON/XOFF
BH = new XOFF character (00h = current)
BL = new XON character (00h = current)
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=04h"Digiboard"
----------1406-------------------------------
INT 14 - FOSSIL - RAISE/LOWER DTR
AH = 06h
DX = port
AL = DTR state to be set
00h = lower
01h = raise
SeeAlso: AH=1Ah
----------1406-------------------------------
INT 14 - MultiDOS Plus IODRV - WRITE CHARACTER TO PORT
AH = 06h
AL = character
Return: AL = status
00h successful
Notes: the port number is stored at offset BEh in the Task Control Block
if output queue is full, the calling task is blocked until the
character can be stored
SeeAlso: AH=01h,AH=04h"MultiDOS",AH=05h"MultiDOS",AH=21h"MultiDOS"
SeeAlso: INT 15/AH=13h"MultiDOS"
----------1407-------------------------------
INT 14 - FOSSIL - RETURN TIMER TICK PARAMETERS
AH = 07h
Return: AL = timer tick interrupt number
AH = ticks per second on interrupt number in AL
DX = approximate number of milliseconds per tick
SeeAlso: AH=16h
----------1407-------------------------------
INT 14 - MultiDOS Plus IODRV - GET PORT STATUS
AH = 07h
Return: CL = modem status (see AH=03h)
CH = character at head of input queue (if any)
DX = number of characters in input queue
Note: the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=03h,AH=05h"MultiDOS",AH=08h"MultiDOS",AH=09h"MultiDOS"
SeeAlso: AH=23h"MultiDOS",INT 15/AH=13h"MultiDOS"
----------1408-------------------------------
INT 14 - FOSSIL - FLUSH OUTPUT BUFFER WAITING TILL ALL OUTPUT IS DONE
AH = 08h
DX = port number
SeeAlso: AH=09h"FOSSIL"
----------1408-------------------------------
INT 14 - MultiDOS Plus 4.0 IODRV - GET AND RESET PORT LINE STATUS
AH = 08h
Return: AL = line status (see AH=03h)
AH destroyed
Notes: the port number is stored at offset BEh in the Task Control Block
on every line status change, the line status is ORed with the line
status accumulator; this function returns the accumulator and clears
it
SeeAlso: AH=03h,AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
----------1408-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - ALTERNATE STATUS CHECK
AH = 08h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = RS232 status bits (see AH=03h)
ZF set if no characters queued
ZF clear if character available
AL = next character
SeeAlso: AH=03h,AH=09h"Digiboard"
----------1409-------------------------------
INT 14 - FOSSIL - PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT
AH = 09h
DX = port number
SeeAlso: AH=08h"FOSSIL",AH=0Ah"FOSSIL",AH=88h
----------1409-------------------------------
INT 14 - MultiDOS Plus IODRV - RESET PORT STATUS
AH = 09h
Return: modem status byte cleared
Note: the port number is stored at offset BEh in the Task Control Block
SeeAlso: AH=04h"MultiDOS",AH=07h"MultiDOS",INT 15/AH=13h"MultiDOS"
----------1409-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR BUFFERS
AH = 09h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=08h"Digiboard",AH=0Ah"Digiboard",AH=10h"Digiboard"
----------140A-------------------------------
INT 14 - FOSSIL - PURGE INPUT BUFFER THROWING AWAY ALL PENDING INPUT
AH = 0Ah
DX = port number
SeeAlso: AH=09h"FOSSIL",AH=85h
----------140A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - INPUT QUEUE CHECK
AH = 0Ah
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters available in buffer
SeeAlso: AH=09h"Digiboard",AH=0Dh"Digiboard"
----------140B-------------------------------
INT 14 - FOSSIL - TRANSMIT NO WAIT
AH = 0Bh
AL = character
DX = port number
Return: AX = 0000h character not accepted
= 0001h character accepted
SeeAlso: AH=01h
----------140C-------------------------------
INT 14 - FOSSIL - NON-DESTRUCTIVE READ AHEAD
AH = 0Ch
DX = port number
Return: AX = FFFFh character not available
AX = 00xxh character xx available
SeeAlso: AH=20h"FOSSIL"
----------140D-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITHOUT WAIT
AH = 0Dh
Return: AX = FFFFh character not available
= xxyyh standard IBM-style scan code
SeeAlso: AH=0Eh
----------140D-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET POINTER TO CH_KEY_RDY FLAG
AH = 0Dh
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> CH_KEY_RDY flag
SeeAlso: AH=0Ah"Digiboard"
Values for CH_KEY_RDY flag:
00h receive buffer empty
FFh characters available
----------140E-------------------------------
INT 14 - FOSSIL - KEYBOARD READ WITH WAIT
AH = 0Eh
Return: AX = xxyyh standard IBM-style scan code
SeeAlso: AH=0Dh"FOSSIL"
----------140E-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - WRITE STRING
AH = 0EH
CX = number of characters to write
ES:BX -> string
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters actually written
ZF clear if successful
ZF set on error
SeeAlso: AH=0Fh"Digiboard"
----------140F-------------------------------
INT 14 - FOSSIL - ENABLE/DISABLE FLOW CONTROL
AH = 0Fh
AL = bit mask describing flow control requested
0: xon/xoff on transmit (watch for xoff while sending)
1: CTS/RTS (CTS on transmit/RTS on receive)
2: reserved
3: xon/xoff on receive (send xoff when buffer near full)
4-7: all 1
DX = port number
SeeAlso: AH=10h"FOSSIL"
----------140F-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - READ STRING
AH = 0Fh
CX = number of characters to read
ES:BX -> buffer
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of characters read
ZF clear if successful
ZF set on error (line status or wrong number of characters)
SeeAlso: AH=0Eh"Digiboard"
----------1410-------------------------------
INT 14 - FOSSIL - EXTENDED ^C/^K CHECKING AND TRANSMIT ON/OFF
AH = 10h
AL = bit mask
0: enable/disable ^C/^K checking
1: enable/disable the transmitter
DX = port number
SeeAlso: AH=0Fh"FOSSIL"
----------1410-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR RECEIVE BUFFER
AH = 10h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=09h"Digiboard",AH=11h"Digiboard"
----------1411-------------------------------
INT 14 - FOSSIL - SET CURRENT CURSOR LOCATION
AH = 11h
DH = row
DL = column
Note: this is the same as INT 10/AH=02h
SeeAlso: AH=12h"FOSSIL"
----------1411-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CLEAR TRANSMIT BUFFER
AH = 11h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=09h"Digiboard",AH=10h"Digiboard"
----------1412-------------------------------
INT 14 - FOSSIL - READ CURRENT CURSOR LOCATION
AH = 12h
Return: DH = row
DL = column
Note: this is the same as INT 10/AH=03h
SeeAlso: AH=11h"FOSSIL"
----------1412-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - GET TRANSMIT BUFFER FREE SPACE
AH = 12h
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AX = number of bytes free
SeeAlso: AH=0Ah"Digiboard"
----------1413-------------------------------
INT 14 - FOSSIL - SINGLE CHARACTER ANSI WRITE TO SCREEN
AH = 13h
AL = character
Note: should not be called if it is unsafe to call DOS
SeeAlso: AH=15h
----------1414-------------------------------
INT 14 - FOSSIL - ENABLE OR DISABLE WATCHDOG PROCESSING
AH = 14h
AL = 01h enable watchdog
00h disable watchdog
DX = port number
----------1415-------------------------------
INT 14 - FOSSIL - WRITE CHARACTER TO SCREEN USING BIOS SUPPORT ROUTINES
AH = 15h
AL = character
SeeAlso: AH=13h
----------1416-------------------------------
INT 14 - FOSSIL - INSERT/DELETE FUNCTION FROM TIMER TICK CHAIN
AH = 16h
AL = function
00h = delete
01h = add
ES:DX -> routine to call
Return: AX = status
0000h successful
0001h unsuccessful
SeeAlso: AH=07h"FOSSIL"
----------1416-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - CCB COMMAND
AH = 16h
AL = CCB command number (see below)
BL = byte 2
BH = byte 3
CL = byte 1 (for all channel functions except 4Eh and 4Fh)
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh error
SeeAlso: AH=18h"Digiboard"
Values for CCB command number:
40h Set Receive Mid Water Mark
41h Set Receive High Water Mark
42h Flush Receive Buffer
43h Flush Transmit Buffer
44h Transmit Pause
45h Transmit Resume
46h Set Interrupt to Host Mask
47h Set Baud, Data, Stop and Parity
48h Send Break
49h Set Modem Lines
4Ah Set Break Count
4Bh Set Handshake
4Ch Set Xon/Xoff Characters
4Dh Set Transmit Mid Water Mark
4Eh IRQ Polling Timer to Host
4Fh Buffer Set All
50h Port On
51h Port Off
52h Receive Pause
53h Special Character Interrupt
54h RS-422 Enable
----------1417-------------------------------
INT 14 - FOSSIL - REBOOT SYSTEM
AH = 17h
AL = method
00h = cold boot
01h = warm boot
SeeAlso: INT 19
----------1418-------------------------------
INT 14 - FOSSIL - READ BLOCK
AH = 18h
CX = maximum number of characters to transfer
DX = port number
ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=19h"FOSSIL",AH=83h"COURIERS",AX=FF02h,INT 6B/AX=0100h
----------1418-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SEND BIOS COMMAND
AH = 18h
ES:BX -> 16-byte command string
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
80h timeout
AL = mailbox status
00h no errors
8Xh BIOS error
ES:BX buffer filled in with mailbox string
ZF clear if no errors
ZF set if either status byte contains an error code
SeeAlso: AH=16h"Digiboard"
----------1419-------------------------------
INT 14 - FOSSIL - WRITE BLOCK
AH = 19h
CX = maximum number of characters to transfer
DX = port number
ES:DI -> user buffer
Return: AX = number of characters transferred
SeeAlso: AH=18h"FOSSIL",AH=86h,INT 6B/AX=0000h
----------1419-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X* - SPECIAL CHARACTER INTERRUPT
AH = 19h
BL = flag
00h disable special character interrupt
FFh enable interrupt
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: AH = status
00h successful
FFh failed
SeeAlso: AH=1Ah"Digiboard"
----------141A-------------------------------
INT 14 - FOSSIL - BREAK BEGIN OR END
AH = 1Ah
AL = 00h stop sending 'break'
01h start sending 'break'
DX = port number
SeeAlso: AH=06h"FOSSIL",AH=8Ah,AH=FAh
----------141A-------------------------------
INT 14 - Digiboard DigiCHANNEL PC/X - SPECIAL CHARACTER FLAG/COUNTER
AH = 1Ah
BX = subfunction
00h return pointer to special character flag byte
01h return pointer to special character counter word
DX = port number (00h-03h) (04h-43h for XAPCM232.SYS)
Return: ES:BX -> special character flag or counter
Notes: flag is FFh if one or more special characters are in the receive
buffer; it is 00h and the counter is invalid if no special characters
are in the receive buffer
counter (if valid) contains the number of characters in the receive
buffer up to and including the last-received special character
----------141B-------------------------------
INT 14 - FOSSIL - RETURN INFORMATION ABOUT THE DRIVER
AH = 1Bh
DX = port number
CX = size of user buffer
ES:DI -> user buffer for driver info (see below)
Return: AX = number of characters transferred
CX = 3058h ("0X") (X00 FOSSIL only)
DX = 2030h (" 0") (X00 FOSSIL only)
Format of driver info:
Offset Size Description
00h WORD size of structure in bytes
02h BYTE FOSSIL spec driver conforms to
03h BYTE revision level of this specific driver
04h DWORD pointer to ASCIZ identification string
08h WORD size of the input buffer
0Ah WORD number of bytes left in buffer
0Ch WORD size of the output buffer
0Eh WORD number of bytes left in buffer
10h BYTE width of screen
11h BYTE length of screen
12h BYTE actual baud rate, computer to modem
----------141C-------------------------------
INT 14 - X00 FOSSIL - ACTIVATE PORT
AH = 1Ch
DX = port number
Return: AX = 1954h if successful
BL = maximum function number supported (not including 7Eh and above)
BH = revision of FOSSIL specification supported
Note: this is a duplicate of AH=04h, so that AH=04h may be made compatible
with the PS/2 BIOS in a future release
SeeAlso: AH=04h"FOSSIL",AH=1Dh
----------141D-------------------------------
INT 14 - X00 FOSSIL - DEACTIVATE PORT
AH = 1Dh
DX = port number
Return: none
Notes: this is a duplicate of AH=05h, so that AH=05h may be made compatible
with the PS/2 BIOS in a future release
ignored if the port was never activated with AH=04h or AH=1Ch
SeeAlso: AH=05h"FOSSIL",AH=1Ch
----------141E-------------------------------
INT 14 - X00 FOSSIL - EXTENDED LINE CONTROL INITIALIZATION
AH = 1Eh
AL = break status
00h if break
01h if no break
BH = parity
00h no parity
01h odd parity
02h even parity
03h stick parity odd
04h stick parity even
BL = number of stop bits
00h one stop bit
01h two stop bits (1.5 if 5 bit word length)
CH = word length
00h 5 bits
01h 6 bits
02h 7 bits
03h 8 bits
CL = bps rate
00h 110
01h 150
02h 300
03h 600
04h 1200
05h 2400
06h 4800
07h 9600
08h 19200
DX = port number
Return: AX = port status code (see AH=00h)
Notes: this function is intended to exactly emulate the PS/2 BIOS AH=04h call
if the port was locked at X00 load time, the appropriate parameters are
ignored
SeeAlso: AH=00h,AH=04h"SERIAL I/O"
----------141F-------------------------------
INT 14 - X00 FOSSIL - EXTENDED SERIAL PORT STATUS/CONTROL
AH = 1Fh
AL = 00h read modem control register
Return: BL = modem control register (see below)
AH = status
AL = 01h write modem control register
BL = modem control register
bit 0: data terminal ready
bit 1: request to send
bit 2: OUT1
bit 3: OUT2 (interrupts) enabled
bit 4: LOOP
bits 5-7 reserved
Return: AX = status
DX = port number
SeeAlso: AH=00h,AH=05h"SERIAL I/O"
Notes: this function is intended to exactly emulate the PS/2 BIOS AH=05h call
X00 forces BL bit 3 set (interrupts cannot be disabled)
----------1420-------------------------------
INT 14 - X00 FOSSIL - DESTRUCTIVE READ WITH NO WAIT
AH = 20h
DX = port number
Return: AH = 00h if character was available
AL = next character (removed from receive buffer)
AX = FFFFh if no character available
SeeAlso: AH=0Ch,AH=21h"X00"
----------1420-------------------------------
INT 14 - Alloy MW386 - ATTACH LOGICAL COMMUNICATIONS PORT TO PHYSICAL PORT
AH = 20h
AL = logical port (01h COM1, 02h COM2)
DX = physical port number
Return: AX = status
0000h successful
FFFFh failed
SeeAlso: AH=21h"Alloy",AH=22h"Alloy",AH=23h"Alloy",INT 17/AH=8Bh"Alloy"
----------1420-------------------------------
INT 14 - MultiDOS Plus - INITIALIZE PORT
AH = 20h
AL = port parameters (see AH=00h"SERIAL")
DX = port number (0-3)
Return: AH = status
00h successful
41h no such port
64h monitor mode already active
SeeAlso: AH=00h"SERIAL",AH=04h"MultiDOS",AH=21h"MultiDOS",AH=23h"MultiDOS"
----------1421-------------------------------
INT 14 - X00 FOSSIL - STUFF RECEIVE BUFFER
AH = 21h
AL = character
DX = port number
Notes: the given character is inserted at the end of the receive buffer as if
it had just arrived from the serial port; all normal receive
processing (XON/XOFF, ^C/^K) is performed on the character
fully re-entrant
SeeAlso: AH=20h"X00"
----------1421-------------------------------
INT 14 - Alloy MW386 v1.x only - RELEASE PHYSICAL COMMUNICATIONS PORT
AH = 21h
DX = physical port number
Return: AX = status
0000h successful
FFFFh failed
SeeAlso: AH=20h"Alloy",AH=22h"Alloy"
----------1421-------------------------------
INT 14 - MultiDOS Plus - TRANSMIT CHARACTER
AH = 21h
AL = character to send
DX = port number
Return: AH = status
00h successful
39h no DSR or CTS
3Ch no DSR
3Bh no CTS
41h no such port
42h monitor mode not active
97h timed out
Note: monitor mode must have been turned on with AH=24h before calling
SeeAlso: AH=20h"MultiDOS",AH=22h"MultiDOS",AH=24h"MultiDOS"
----------1422-------------------------------
INT 14 - Alloy MW386 v2+ - RELEASE LOGICAL COMMUNICATIONS PORT
AH = 22h
AL = logical port (01h COM1, 02h COM2)
Return: AX = status (0000h successful)
SeeAlso: AH=20h"Alloy",AH=21h"Alloy"
----------1422-------------------------------
INT 14 - MultiDOS Plus - RECEIVE CHARACTER
AH = 22h
DX = port number
Return: AH = status (see also AH=21h"MultiDOS")
00h successful
AL = character
3Dh framing and parity error
3Eh overrun error
3Fh framing error
40h parity error
96h ring buffer overflow
Note: if no character is available, this function waits until a character
arrives or an implementation-dependent timeout elapses
SeeAlso: AH=20h"MultiDOS",AH=21h"MultiDOS",AH=27h
----------1423-------------------------------
INT 14 - Alloy MW386 v2+ - GET PORT NUMBER FROM LOGICAL PORT ID
AH = 23h
AL = logical port (01h COM1, 02h COM2)
DH = user ID
DL = process ID (DH,DL both FFh for current task)
Return: AL = MW386 port mode
bit 0: port is shared (spooler only)
1: port is spooled instead of direct (spooler only)
2: port is assigned as logical COM device, not in spooler
3: port is free
CX = MW386 port number
DH = owner's user ID
DL = owner's task ID
SeeAlso: AH=20h"Alloy",INT 17/AH=8Bh"Alloy"
----------1423-------------------------------
INT 14 - MultiDOS Plus - GET PORT STATUS
AH = 23h
DX = port number
Return: AH = line status (see AH=03h)
AL = modem status (see AH=03h)
SeeAlso: AH=03h,AH=07h"MultiDOS",AH=20h"MultiDOS"
----------1424-------------------------------
INT 14 - Alloy MW386 v2+ - CHANGE PHYSICAL PORT PARAMETERS
AH = 24h
CX = physical I/O port number
DS:DX -> configuration table (see below)
Return: AH = 00h
Note: invalid port numbers are merely ignored
SeeAlso: INT 17/AH=96h
Format of configuration table:
Offset Size Description
00h BYTE baud rate
00h 38400
01h 19200
02h 9600
03h 7200
04h 4800
05h 3600
06h 2400
07h 2000
08h 1200
09h 600
0Ah 300
0Bh 150
0Ch 134.5
01h BYTE data bits (00h=5, 01h=6, 02h=7, 03h=8)
02h BYTE parity (00h none, 01h odd, 02h even)
03h BYTE stop bits (00h=1, 01h=2)
04h BYTE receive flow control
00h none, 01h XON/XOFF, 02h DTR/DSR, 03h XPC, 04h RTS/CTS
05h BYTE transmit flow control (as for receive)
----------1424-------------------------------
INT 14 - MultiDOS Plus - SET MONITOR MODE
AH = 24h
AL = port status storage
00h single status for entire receive buffer
01h separate status kept for each byte in receive buffer
DX = port number
Return: AH = status
00h successful
3Ah invalid status storage specified
41h no such port
64h monitor mode already active
Note: in monitor mode, MultiDOS redirects all BIOS video output to a serial
port
SeeAlso: AH=20h"MultiDOS",AH=25h
----------1425-------------------------------
INT 14 - MultiDOS Plus - CLEAR BUFFERS
AH = 25h
AL = function
00h only clear buffers
01h clear buffers and deactivate
DX = port number
Return: AH = status
00h successful
3Ah invalid function
41h no such port
42h monitor mode not active
SeeAlso: AH=20h"MultiDOS",AH=24h"MultiDOS"
----------1427-------------------------------
INT 14 - MultiDOS Plus - GET BUFFER CHARACTER COUNT
AH = 27h
DX = port number
Return: AH = status
00h successful
41h no such port
42h monitor mode not active
AL = number of characters in receive buffer
----------147E-------------------------------
INT 14 - FOSSIL - INSTALL AN EXTERNAL APPLICATION FUNCTION
AH = 7Eh
AL = code assigned to external application (80h-BFh)
80h reserved for communications FOSSIL
81h video FOSSIL
82h reserved for keyboard FOSSIL
83h reserved for system FOSSIL
ES:DX -> entry point
Return: AX = 1954h
BL = code assigned to application (same as input AL)
DH = 00h failed
01h successful
SeeAlso: AH=7Fh,AH=80h"FOSSIL",AX=8100h,AH=82h"FOSSIL",AH=83h"FOSSIL"
----------147F-------------------------------
INT 14 - FOSSIL - REMOVE AN EXTERNAL APPLICATION FUNCTION
AH = 7Fh
AL = code assigned to external application
ES:DX -> entry point
Return: AX = 1954h
BL = code assigned to application (same as input AL)
DH = 00h failed
01h successful
SeeAlso: AH=7Eh
----------1480-------------------------------
INT 14 - COMMUNICATIONS FOSSIL
AH = 80h
SeeAlso: AH=7Eh
----------1480-------------------------------
INT 14 - COURIERS.COM - INSTALLATION CHECK
AH = 80h
Return: AH = E8h if loaded
Note: COURIERS is a TSR utility by PC Magazine
----------1481-------------------------------
INT 14 - COURIERS.COM - CHECK IF PORT BUSY
AH = 81h
AL = port number (1-4)
Return: AH = 00h port available
01h port exists but already in use
02h port nonexistent
Note: COURIERS is a TSR utility by PC Magazine
SeeAlso: AH=83h,AH=8Dh
----------1481-------------------------------
INT 14 - Egberto Willies COMM-DRV - EXTENDED INITIALIZATION
AH = 81h
BX:DI -> port control block
Return: ???
SeeAlso: AH=00h
Format of port control block:
Offset Type Description
00h WORD port IO address
02h WORD port IRQ
04h WORD baud rate
06h WORD parity
08h WORD data bits
0Ah WORD stop bits
0Ch WORD break status
0000h off
0Eh WORD flow control protocol
10h BYTE input block
11h BYTE output block
12h WORD low threshold
14h WORD high threshold
16h WORD segment of buffer
18h WORD offset of buffer
1Ah WORD input buffer length
1Ch WORD output buffer length
1Eh BYTE auxiliary address
1Fh BYTE spare
20h 4 WORDs spares
----------148100-----------------------------
INT 14 - VIDEO FOSSIL - RETURN VFOSSIL INFORMATION
AX = 8100h
ES:DI -> buffer for VFOSSIL information (see below)
Return: AX = 1954h if installed
SeeAlso: AH=7Eh,AX=8101h
Format of VFOSSIL information:
Offset Size Description
00h WORD size of information in bytes, including this field
02h WORD VFOSSIL major version
04h WORD VFOSSIL revision level
06h WORD highest VFOSSIL application function supported
----------148101-----------------------------
INT 14 - VIDEO FOSSIL - OPEN VFOSSIL
AX = 8101h
ES:DI -> buffer for application function table (see below)
CX = length of buffer in bytes
Return: AX = 1954h if installed
BH = highest VFOSSIL application function supported
Note: the number of initialized pointers in the application function table
will never exceed CX/4; if the buffer is large enough, BH+1 pointers
will be initialized
SeeAlso: AX=8102h
Format of application function table:
Offset Size Description
00h DWORD -> function to query current video mode (VioGetMode)
04h DWORD -> function to set video mode (VioSetMode)
08h DWORD -> function to query hardware config (VioGetConfig)
0Ch DWORD -> function to write data in TTY mode (VioWrtTTY)
10h DWORD -> function to get current ANSI state (VioGetANSI)
14h DWORD -> function to set new ANSI state (VioSetANSI)
18h DWORD -> function to get curr cursor position (VioGetCurPos)
1Ch DWORD -> function to set cursor position (VioSetCurPos)
20h DWORD -> function to get cursor shape (VioGetCurType)
24h DWORD -> function to set cursor shape (VioSetCurType)
28h DWORD -> function to scroll screen up (VioScrollUp)
2Ch DWORD -> function to scroll screen down (VioScrollDn)
30h DWORD -> function to read cell string from screen (VioReadCellStr)
34h DWORD -> function to read char string from screen (VioReadCharStr)
38h DWORD -> function to write a cell string (VioWrtCellStr)
3Ch DWORD -> function to write char string, leaving attr (VioWrtCharStr)
40h DWORD -> function to write char string,const attr (VioWrtCharStrAttr)
44h DWORD -> function to replicate an attribute (VioWrtNAttr)
48h DWORD -> function to replicate a cell (VioWrtNCell)
4Ch DWORD -> function to replicate a character (VioWrtNChar)
Format of video mode data structure:
Offset Size Description
00h WORD length of structure including this field
02h BYTE mode characteristics
bit 0: clear if MDA, set otherwise
bit 1: graphics mode
bit 2: color disabled (black-and-white)
03h BYTE number of colors supported (1=2 colors, 4=16 colors, etc)
04h WORD number of text columns
06h WORD number of text rows
08h WORD reserved
0Ah WORD reserved
0Ch DWORD reserved
Format of video configuration data:
Offset Size Description
00h WORD structure length including this field
02h WORD adapter type
00h monochrome/printer
01h CGA
02h EGA
03h VGA
07h 8514/A
04h WORD display type
00h monochrome
01h color
02h enhanced color
09h 8514
06h DWORD adapter memory size
Format of cursor type record:
Offset Size Description
00h WORD cursor start line
02h WORD cursor end line
04h WORD cursor width (always 01h)
06h WORD cursor attribute (FFFFh = hidden)
Call VioGetMode with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to video mode data structure (see above)
Return: AX = error code (00h, 74h, 17Eh, 1B4h)
0000h successful
0074h internal VIO failure
0163h unsupported mode
0166h invalid row value
0167h invalid column value
017Eh buffer too small
01A5h invalid VIO parameter
01B4h invalid VIO handle
Call VioSetMode with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to video mode data structure (see above)
Return: AX = error code (00h, 74h, 163h, 17Eh, 1A5h, 1B4h) (see above)
Call VioGetConfig with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to video configuration data buffer (see above)
Return: AX = error code (00h, 74h, 17Eh, 1B4h) (see above)
Call VioWrtTTY with:
STACK: WORD VIO handle (must be 00h)
WORD length of string
DWORD pointer to character string to be written to screen
Return: AX = error code (00h, 74h, 1B4h) (see above)
Notes: write wraps at end of line and terminates if it reaches end of screen
in ANSI mode, ANSI control sequences are interpreted, and this func is
not required to be reentrant; in non-ANSI mode, the function is
reentrant and may be called from within an MSDOS function call
Call VioGetANSI with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to WORD which will be set to 00h if ANSI is off
or 01h if ANSI is on
Return: AX = error code (00h, 74h, 1B4h) (see above)
Call VioSetANSI with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to WORD indicating new state of ANSI
00h off
01h on
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see above)
Call VioGetCurPos with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to WORD to hold current cursor column (0-based)
DWORD pointer to WORD to hold current cursor row (0-based)
Return: AX = error code (00h, 74h, 1B4h) (see above)
Call VioSetCurPos with:
STACK: WORD VIO handle (must be 00h)
WORD cursor column
WORD cursor row
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: if either coordinate is invalid, the cursor is not moved
Call VioGetCurType with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to cursor type record (see above)
Return: AX = error code (00h, 74h, 1B4h) (see above)
Call VioSetCurType with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to cursor type record (see above)
Return: AX = error code (00h, 74h, 1A4h, 1B4h) (see above)
Call VioScrollUp with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to char/attr cell for filling emptied rows
WORD number or rows to scroll (FFFFh = clear area)
WORD right column of scroll area
WORD bottom row of scroll area
WORD left column of scroll area
WORD top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Call VioScrollDn with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to char/attr cell for filling emptied rows
WORD number or rows to scroll (FFFFh = clear area)
WORD right column of scroll area
WORD bottom row of scroll area
WORD left column of scroll area
WORD top row of scroll area
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Call VioReadCellStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start reading
WORD row at which to start reading
DWORD pointer to WORD containing length of buffer in bytes
on return, WORD contains number of bytes actually read
DWORD pointer to buffer for cell string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see above)
Call VioReadCharStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start reading
WORD row at which to start reading
DWORD pointer to WORD containing length of buffer in bytes
on return, WORD contains number of bytes actually read
DWORD pointer to buffer for character string
Return: AX = error code (00h, 74h, 166h ,167h, 1B4h) (see above)
Call VioWrtCellStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD length of cell string in bytes
DWORD pointer to cell string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: write wraps at end of line and terminates if it reaches end of screen
Call VioWrtCharStr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD length of character string
DWORD pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: write wraps at end of line and terminates if it reaches end of screen
Call VioWrtCharStrAttr with:
STACK: WORD VIO handle (must be 00h)
DWORD pointer to attribute to be applied to each character
WORD column at which to start writing
WORD row at which to start writing
WORD length of character string
DWORD pointer to character string to write
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: write wraps at end of line and terminates if it reaches end of screen
Call VioWrtNAttr with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD number of times to write attribute
DWORD pointer to display attribute to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: write wraps at end of line and terminates if it reaches end of screen
Call VioWrtNCell with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD number of times to write cell
DWORD pointer to cell to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: write wraps at end of line and terminates if it reaches end of screen
Call VioWrtNChar with:
STACK: WORD VIO handle (must be 00h)
WORD column at which to start writing
WORD row at which to start writing
WORD number of times to write character
DWORD pointer to character to replicate
Return: AX = error code (00h, 74h, 166h, 167h, 1B4h) (see above)
Note: write wraps at end of line and terminates if it reaches end of screen
----------148102-----------------------------
INT 14 - VIDEO FOSSIL - CLOSE VFOSSIL
AX = 8102h
Return: AX = 1954h
Note: terminates all operations; after this call, the video FOSSIL may either
be removed from memory or reinitialized
SeeAlso: AX=8101h,AX=8103h
----------148103-----------------------------
INT 14 - VIDEO FOSSIL - UNINSTALL
AX = 8103h
Return: AX = 1954h
Note: this is an extension to the VFOSSIL spec by Bob Hartman's VFOS_IBM
----------1482-------------------------------
INT 14 - KEYBOARD FOSSIL
AH = 82h
SeeAlso: AH=7Eh
----------1482-------------------------------
INT 14 - COURIERS.COM - CONFIGURE PORT
AH = 82h
AL = port number (1-4)
BX = speed (bps)
CX = bit flags
bit 0: enable input flow control
bit 1: enable output flow control
bit 2: use X.PC protocol (not yet implemented)
SeeAlso: AH=00h,AH=8Ch,INT 7Ah"X.PC"
----------1483-------------------------------
INT 14 - SYSTEM FOSSIL
AH = 83h
SeeAlso: AH=7Eh
----------1483-------------------------------
INT 14 - COURIERS.COM - START INPUT
AH = 83h
ES:BX -> circular input buffer
CX = length of buffer
(should be at least 128 bytes if input flow control enabled)
SeeAlso: AH=18h,AH=87h,AH=8Dh,AH=A5h"BAPI"
----------1484-------------------------------
INT 14 - COURIERS.COM - READ CHARACTER
AH = 84h
Return: ZF set if no characters available
ZF clear
AL = character
AH = modem status bits
bit 7: set on input buffer overflow
SeeAlso: AH=02h,AH=86h,AH=89h
----------1485-------------------------------
INT 14 - COURIERS.COM - FLUSH PENDING INPUT
AH = 85h
SeeAlso: AH=0Ah,AH=88h
----------1486-------------------------------
INT 14 - COURIERS.COM - START OUTPUT
AH = 86h
ES:BX -> output buffer
CX = length of output buffer
SeeAlso: AH=19h,AH=83h"COURIERS",AH=A4h"BAPI"
----------1487-------------------------------
INT 14 - COURIERS.COM - OUTPUT STATUS
AH = 87h
Return: AX = number of unsent characters
----------1488-------------------------------
INT 14 - COURIERS.COM - ABORT OUTPUT
AH = 88h
SeeAlso: AH=09h,AH=85h
----------1489-------------------------------
INT 14 - COURIERS.COM - SEND SINGLE CHARACTER
AH = 89h
CL = character to send
SeeAlso: AH=01h,AH=84h
----------148A-------------------------------
INT 14 - COURIERS.COM - SEND BREAK
AH = 8Ah
SeeAlso: AH=89h,AH=FAh
----------148C-------------------------------
INT 14 - COURIERS.COM - SET SPEED
AH = 8Ch
BX = speed in bps
SeeAlso: AH=00h,AH=82h"COURIERS"
----------148D-------------------------------
INT 14 - COURIERS.COM - DECONFIGURE PORT
AH = 8Dh
SeeAlso: AH=82h"COURIERS"
----------14A0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - CONNECT TO PORT
AH = A0h
???
Return: ???
SeeAlso: AH=A1h"BAPI"
----------14A0--CXFFFF-----------------------
INT 14 - Interconnections Inc. TES - INSTALLATION CHECK/STATUS REPORT
AH = A0h
CX = FFFFh
Return: CF clear if successful
AX = 5445h ('TE')
CX <> FFFFh
DX = port number
CF set on error
Note: TES is a network serial port emulation program
SeeAlso: AH=A1h"TES"
----------14A1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORT
AH = A1h
???
Return: ???
SeeAlso: AH=A0h"BAPI"
----------14A1-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SESSIONS WITH STATUS
AH = A1h
Return: CX = number of active sessions
ES:SI -> status array (see below)
SeeAlso: AH=A2h"TES",AH=A3h"TES"
Format of status array entry:
Offset Size Description
00h BYTE status
01h WORD offset of name
----------14A2-------------------------------
INT 14 - Interconnections Inc. TES - GET LIST OF SERVER NAMES
AH = A2h
Return: CX = number of servers
ES:SI -> array of offsets from ES for server names
SeeAlso: AH=A1h"TES"
----------14A3-------------------------------
INT 14 - Interconnections Inc. TES - START A NEW SESSION
AH = A3h
ES:SI -> ???
Return: CF clear if successful
AX = 5445h ('TE')
CX <> FFFFh
DX = port number
CF set on error
SeeAlso: AH=A1h"TES",AH=A4h"TES",AH=A6h"TES"
----------14A4-------------------------------
INT 14 - 3com BAPI SERIAL I/O - WRITE BLOCK
AH = A4h
CX = length
DH = session number (00h)
ES:BX -> buffer
Return: CX = number of bytes sent
SeeAlso: AH=19h,AH=86h,AH=A5h"BAPI"
----------14A4-------------------------------
INT 14 - Interconnections Inc. TES - HOLD CURRENTLY ACTIVE SESSION
AH = A4h
???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
----------14A5-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ BLOCK
AH = A5h
CX = length
DH = session number (00h)
ES:BX -> buffer
Return: CX = number of bytes read
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A4h"BAPI",AX=FF02h
----------14A5-------------------------------
INT 14 - Interconnections Inc. TES - RESUME A SESSION
AH = A5h
AL = session number
Return: ???
SeeAlso: AH=A4h"TES",AH=A6h"TES"
----------14A6-------------------------------
INT 14 - 3com BAPI SERIAL I/O - SEND SHORT BREAK
AH = A6h
DH = session number (00h)
SeeAlso: AH=1Ah,AH=8Ah,AH=FAh
----------14A6-------------------------------
INT 14 - Interconnections Inc. TES - DROP A SESSION
AH = A6h
AL = session number
Return: AH = status
00h successful
else error
SeeAlso: AH=A3h"TES",AH=A5h"TES"
----------14A7-------------------------------
INT 14 - 3com BAPI SERIAL I/O - READ STATUS
AH = A7h
???
Return: ???
----------14A7-------------------------------
INT 14 - Interconnections Inc. TES - SWITCH TO NEXT ACTIVE SESSION
AH = A7h
???
Return: ???
SeeAlso: AH=A3h"TES",AH=A5h"TES"
----------14A8-------------------------------
INT 14 - Interconnections Inc. TES - SEND STRING TO COMMAND INTERPRETER
AH = A8h
AL = 00h no visible response
ES:SI -> ASCIZ command
Return: ???
----------14AF00BXAAAA-----------------------
INT 14 - 3com BAPI SERIAL I/O - INSTALLATION CHECK
AX = AF00h
BX = AAAAh
Return: AX = AF01h if installed
----------14B0-------------------------------
INT 14 - 3com BAPI SERIAL I/O - ENABLE/DISABLE "ENTER COMMAND MODE" CHARACTER
AH = B0h
AL = 00h disable
= 01h enable
----------14B1-------------------------------
INT 14 - 3com BAPI SERIAL I/O - ENTER COMMAND MODE
AH = B1h
----------14F0F0-----------------------------
INT 14 - ASAP v1.0 - ???
AX = F0F0h
DX = ???
???
Return: ???
Note: ASAP (Automatic Screen Access Program) is a shareware screen reader by
MicroTalk
SeeAlso: AX=F0F1h
----------14F0F1DX0000-----------------------
INT 14 - ASAP v1.0 - INSTALLATION CHECK
AX = F0F1h
DX = 0000h
Return: DX = segment of resident code
= 0000h if not installed
Note: ASAP (Automatic Screen Access Program) is a shareware screen reader by
MicroTalk
SeeAlso: AX=F0F0h
----------14F4FF-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - INSTALLATION CHECK
AX = F4FFh
DX = port (00h-03h)
Return: CF clear if present
AX = 0000h
CF set if not present
AX <> 0000h
----------14F9-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - REGAIN CONTROL
AH = F9h
DX = port (00h-03h)
----------14FA-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SEND BREAK
AH = FAh
DX = port (00h-03h)
SeeAlso: AH=1Ah,AH=8Ah
----------14FB-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - SET OUTGOING MODEM SIGNALS
AH = FBh
AL = modem control register
bit 0: data terminal ready
1: request to send
2: OUT1
3: OUT2
4: loopback
bits 5-7 unused
DX = port (00h-03h)
----------14FC-------------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ CHARACTER, NO WAIT
AH = FCh
DX = port (00h-03h)
Return: AH = RS232 status bits (see AH=00h)
AL = character
SeeAlso: AH=02h,AH=0Ch,AX=FF02h
----------14FD02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - READ STATUS
AX = FD02h
Return: CX = number of characters available
----------14FF02-----------------------------
INT 14 - IBM/Yale EBIOS SERIAL I/O - BUFFERED READ
AX = FF02h
CX = length
DX = port (00h-03h)
ES:BX -> buffer
Return: CX = number of characters read
SeeAlso: AH=18h,AH=83h"COURIERS",AH=A5h"BAPI",AH=FCh
---------------------------------------------