INT 05 - PRINT SCREEN
INT 11 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET EQUIPMENT LIST
INT 12 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET MEMORY SIZE
INT 13 - DISK - RESET DISK SYSTEM (AH=00h)
INT 13 - DISK - GET STATUS OF LAST OPERATION (AH=01h)
INT 13 - DISK - READ SECTOR(S) INTO MEMORY (AH=02h)
INT 13 - DISK - WRITE DISK SECTOR(S) (AH=03h)
INT 13 - DISK - VERIFY DISK SECTOR(S) (AH=04h)
INT 13 - FLOPPY - FORMAT TRACK (AH=05h)
INT 13 - FIXED DISK - FORMAT TRACK AND SET BAD SECTOR FLAGS (XTIBM PC XT,PORTIBM PC Portable (uses same BIOS as XT)) (AH=06h)
INT 13 - FIXED DISK - FORMAT DRIVE STARTING ATIBM PC AT GIVEN TRACK (XTIBM PC XT,PORTIBM PC Portable (uses same BIOS as XT)) (AH=07h)
INT 13 - DISK - GET DRIVE PARAMETERS (PCIBM PC,XT286IBM PC XT/286,CONVIBM Convertible,PSIBM PS/2, any model,ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE.,SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer. A host adapter connects the SCSI bus to the computer's own bus. See also ESDI, IDE.) (AH=08h/ES:DI=0000h)
INT 13 - HARD DISK - INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (ATIBM PC AT,PSIBM PS/2, any model) (AH=09h)
INT 13 - HARD DISK - READ LONG SECTOR(S) (ATIBM PC AT and later) (AH=0Ah)
INT 13 - HARD DISK - WRITE LONG SECTOR(S) (ATIBM PC AT and later) (AH=0Bh)
INT 13 - HARD DISK - SEEK TO CYLINDER (AH=0Ch)
INT 13 - HARD DISK - RESET HARD DISKS (AH=0Dh)
INT 13 - HARD DISK - READ SECTOR BUFFER (XTIBM PC XT only) (AH=0Eh)
INT 13 - HARD DISK - WRITE SECTOR BUFFER (XTIBM PC XT only) (AH=0Fh)
INT 13 - HARD DISK - CHECK IF DRIVE READY (AH=10h)
INT 13 - HARD DISK - RECALIBRATE DRIVE (AH=11h)
INT 13 - HARD DISK - CONTROLLER RAM(Random Access Memory) See also DRAM, SRAM. DIAGNOSTIC (XTIBM PC XT,PSIBM PS/2, any model) (AH=12h)
INT 13 - HARD DISK - DRIVE DIAGNOSTIC (XTIBM PC XT,PSIBM PS/2, any model) (AH=13h)
INT 13 - HARD DISK - CONTROLLER INTERNAL DIAGNOSTIC (AH=14h)
INT 13 - DISK - GET DISK TYPE (XTIBM PC XT 1986/1/10 or later,XT286IBM PC XT/286,ATIBM PC AT,PSIBM PS/2, any model) (AH=15h)
INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XTIBM PC XT 1986/1/10 or later,XT286IBM PC XT/286,ATIBM PC AT,PSIBM PS/2, any model) (AH=16h/SI=0000h)
INT 13 - FLOPPY DISK - SET DISK TYPE FOR FORMAT (ATIBM PC AT,PSIBM PS/2, any model) (AH=17h)
INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (ATIBM PC AT model 3x9,XT2IBM PC XT 2,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=18h)
INT 13 - FIXED DISK - PARK HEADS ON ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. DRIVE (XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=19h)
INT 13 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. SurePath BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - Officially "Private" Function (AH=FFh)
INT 15 - CASSETTE - TURN ON TAPE DRIVE'S MOTOR (PCIBM PC and PCjr only) (AH=00h)
INT 15 - CASSETTE - TURN OFF TAPE DRIVE'S MOTOR (PCIBM PC and PCjr only) (AH=01h)
INT 15 - CASSETTE - READ DATA (PCIBM PC and PCjr only) (AH=02h)
INT 15 - CASSETTE - WRITE DATA (PCIBM PC and PCjr only) (AH=03h)
INT 15 - SYSTEM - BUILD ABIOS(Advanced BIOS) The IBMInternational Busiuness Machines XTIBM PC XT/286 and PS/2IBM PS/2, any model models with 80286 or higher processors contain two separate BIOSes. The ABIOS is a protected-mode BIOS which is used by OS/2. For machines without an ABIOS, such as the IBMInternational Busiuness Machines ATIBM PC AT, OS/2 loads the equivalent of the ABIOS from disk. see also CBIOS SYSTEM PARAMETER TABLE (PSIBM PS/2, any model) (AH=04h)
INT 15 - SYSTEM - BUILD ABIOS(Advanced BIOS) The IBMInternational Busiuness Machines XTIBM PC XT/286 and PS/2IBM PS/2, any model models with 80286 or higher processors contain two separate BIOSes. The ABIOS is a protected-mode BIOS which is used by OS/2. For machines without an ABIOS, such as the IBMInternational Busiuness Machines ATIBM PC AT, OS/2 loads the equivalent of the ABIOS from disk. see also CBIOS INITIALIZATION TABLE (PSIBM PS/2, any model) (AH=05h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. SurePath BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - WAIT REQUESTED TIME PERIOD (AH=08h)
INT 15 - SYSTEM - POWER-ON SELF-TEST ERROR LOG (PS50+IBM PS/2 Models 50,60,70,80) (AH=21h)
INT 15 - SYSTEM - later PSIBM PS/2, any model/2s - LOCATE ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN. There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular. All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM. (AH=22h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SMART ENERGY SYSTEM - GET ??? CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. DATA {partially documented} (AX=2300h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SMART ENERGY SYSTEM - SET ??? CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. DATA {partially documented} (AX=2301h/CL=2Dh/CH=2Eh)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SMART ENERGY SYSTEM - GET ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. STARTUP VIDEO REG TABLES {partially documented} (AX=2302h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SMART ENERGY SYSTEM - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AX=2303h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SMART ENERGY SYSTEM - SYSTEM SETUP {partially documented} (AX=2304h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SMART ENERGY SYSTEM - GET PROCESSOR SPEED {partially documented} (AX=2305h)
INT 15 - SYSTEM - READ/MODIFY PROFILES (CONVERTIBLE) (AH=40h)
INT 15 - SYSTEM - WAIT ON EXTERNAL EVENT (CONVERTIBLE and some others) (AH=41h)
INT 15 - SYSTEM - REQUEST POWER OFF (CONVERTIBLE,HP 95LX) (AH=42h)
INT 15 - SYSTEM - READ SYSTEM STATUS (CONVERTIBLE) (AH=43h)
INT 15 - SYSTEM - (DE)ACTIVATE INTERNAL MODEM POWER (CONVERTIBLE) (AH=44h)
INT 15 - Toshiba laptops - SECURITY LEVEL CHECK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AX=44F1h)
INT 15 - Toshiba laptops - SECURITY LEVEL CHECK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AX=44F2h/BX=0604h)
INT 15 - Toshiba laptops - SECURITY LEVEL CHECK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AX=44F3h)
INT 15 - KEYBOARD - KEYBOARD INTERCEPT (ATIBM PC AT model 3x9,XT2IBM PC XT 2,XT286IBM PC XT/286,CONVIBM Convertible,PSIBM PS/2, any model) {callout or callback} (AH=4Fh)
INT 15 - SYSTEM - later PSIBM PS/2, any model/2s - EXPANSION UNIT, RETURN CONFIGURATION NUMBER (AX=5101h)
INT 15 - OS HOOK - DEVICE OPEN (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {callout or callback} (AH=80h)
INT 15 - OS HOOK - DEVICE CLOSE {callout or callback} (AH=81h)
INT 15 - OS HOOK - PROGRAM TERMINATION {callout or callback} (AH=82h)
INT 15 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SET EVENT WAIT INTERVAL (ATIBM PC AT,PS50+IBM PS/2 Models 50,60,70,80) (AH=83h)
INT 15 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - JOYSTICK SUPPORT (XTIBM PC XT after 1982/11/8,ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=84h)
INT 15 - OS HOOK - SysReq KEY ACTIVITY (ATIBM PC AT,PSIBM PS/2, any model) {callout or callback} (AH=85h)
INT 15 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - WAIT (ATIBM PC AT,PSIBM PS/2, any model) (AH=86h)
INT 15 - SYSTEM - COPY EXTENDED MEMORY (AH=87h/CX=8000h)
INT 15 - SYSTEM - GET EXTENDED MEMORY SIZE (286+) (AH=88h)
INT 15 - SYSTEM - SWITCH TO PROTECTED MODE (AH=89h)
INT 15 - OS HOOK - DEVICE BUSY (ATIBM PC AT,PSIBM PS/2, any model) (AH=90h)
INT 15 - OS HOOK - DEVICE POSTsee Power-On Self-Test (ATIBM PC AT,PSIBM PS/2, any model) (AH=91h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. SurePath BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - Officially "Private" Function (AH=92h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. SurePath BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - ACCESS LOADABLE-ABIOS SIGNATURE (AH=A0h)
INT 15 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. SurePath BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - Officially "Private" Function (AH=ABh)
INT 15 - SYSTEM - GET CONFIGURATION (XTIBM PC XT >1986/1/10,ATIBM PC AT mdl 3x9,CONVIBM Convertible,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=C0h)
INT 15 - SYSTEM - RETURN EXTENDED-BIOS DATA-AREA SEGMENT ADDRESS (PSIBM PS/2, any model) (AH=C1h)
INT 15 - SYSTEM - ENABLE/DISABLE WATCHDOG TIMEOUT (PS50+IBM PS/2 Models 50,60,70,80) (AH=C3h)
INT 15 - SYSTEM - PROGRAMMABLE OPTION SELECT (PS50+IBM PS/2 Models 50,60,70,80) (AH=C4h)
INT 15 - OS HOOK - ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. TRACING CALLOUT (PS30IBM PS/2 Model 30 and below/286,PS50Z,PS95) {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated., callout or callback} (AH=C5h)
INT 15 - later PS/2IBM PS/2, any model models - GET POS DATA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AH=C6h)
INT 15 - SYSTEM - later PSIBM PS/2, any model/2s - RETURN MEMORY-MAP INFORMATION (AH=C7h)
INT 15 - SYSTEM - ENABLE/DISABLE PROCESSOR FUNCTIONS (AH=C8h)
INT 15 - newer PS/2IBM PS/2, any model; various BIOSes - GET CPU(Central Processing Unit) The microprocessor which executes programs on your computer. TYPE AND MASK REVISION (AH=C9h/AL=10h)
INT 15 - PS/2IBM PS/2, any model Model 95 - READ/WRITE CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. MEMORY {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AH=CAh)
INT 15 - PS/2IBM PS/2, any model Model 95 - RESERVED {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AH=CBh)
INT 15 - PS/2IBM PS/2, any model Model 95 - RESERVED {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AH=CCh)
INT 15 - PS/2IBM PS/2, any model Model 95 - RESERVED {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (AH=CDh)
INT 15 - later PSIBM PS/2, any model/2s - ALLOCATE DMAsee Direct Memory Access ARBITRATION LEVEL (AH=CEh)
INT 15 - later PSIBM PS/2, any model/2s - DEALLOCATE DMAsee Direct Memory Access ARBITRATION LEVEL (AH=CFh)
INT 15 - later PSIBM PS/2, any model/2s - RESERVED (AH=D0h)
INT 15 - later PSIBM PS/2, any model/2s - GET NUMBER OF DEVICE DESCRIPTOR TABLE (DDT) ENTRIES (AX=D100h/DX=0000h)
INT 15 - later PSIBM PS/2, any model/2s - RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY NUMBER (AX=D101h/DX=0000h)
INT 15 - later PSIBM PS/2, any model/2s - RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY I/O ADDRSS (AX=D102h/DX=0000h)
INT 15 - later PSIBM PS/2, any model/2s - RETURN ENTIRE DDT (AX=D103h/DX=0000h)
INT 15 - later PSIBM PS/2, any model/2s - RETURN DEVICE DESCRIPTOR TABLE (DDT) ENTRY BY DEVICE ID (AX=D104h/DX=0000h)
INT 15 - later PSIBM PS/2, any model/2s - RESERVED (AH=D2h)
INT 15 - later PSIBM PS/2, any model/2s - RESERVED (AH=D3h)
INT 15 - later PSIBM PS/2, any model/2s - GET PHYSICAL FIXED DISK DRIVE NUMBER (SELECTABLE BOOT) (AH=D4h)
INT 15 - later PSIBM PS/2, any model/2s - RESERVED (AH=D5h)
INT 15 - later PSIBM PS/2, any model/2s - READ BOOT DEVICE ID (AX=D600h/BL=00h)
INT 15 - later PSIBM PS/2, any model/2s - WRITE BOOT DEVICE ID (AX=D600h/BL=01h)
INT 15 - later PSIBM PS/2, any model/2s - READ BOOT DEVICE KEY (AX=D601h/BL=00h)
INT 15 - later PSIBM PS/2, any model/2s - WRITE BOOT DEVICE KEY (AX=D601h/BL=01h)
INT 15 - later PSIBM PS/2, any model/2s - QUERY BOOT REFERENCE PARTITION (AX=D602h)
INT 16 - KEYBOARD - GET KEYSTROKE (AH=00h)
INT 16 - KEYBOARD - CHECK FOR KEYSTROKE (AH=01h)
INT 16 - KEYBOARD - GET SHIFT FLAGS (AH=02h)
INT 16 - KEYBOARD - SET TYPEMATIC RATE AND DELAY (AH=03h/BH=03h/BL=0Ch)
INT 16 - KEYBOARD - SET KEYCLICK (PCjr only) (AH=04h)
INT 16 - KEYBOARD - STORE KEYSTROKE IN KEYBOARD BUFFER (ATIBM PC AT/PSIBM PS/2, any model w enh keybd only) (AH=05h)
INT 16 - KEYBOARD - GET KEYBOARD FUNCTIONALITY (AH=09h)
INT 16 - KEYBOARD - GET ENHANCED KEYSTROKE (enhanced kbd support only) (AH=10h)
INT 16 - KEYBOARD - CHECK FOR ENHANCED KEYSTROKE (enh kbd support only) (AH=11h)
INT 16 - KEYBOARD - GET EXTENDED SHIFT STATES (enh kbd support only) (AH=12h)
INT 16 - KEYBOARD - GET 122-KEY KEYSTROKE (122-key kbd support only) (AH=20h)
INT 16 - KEYBOARD - CHECK FOR 122-KEY KEYSTROKE (122-key kbd support only) (AH=21h)
INT 16 - KEYBOARD - GET 122-KEY SHIFT STATUS (122-key kbd support only) (AH=22h)
INT 17 - PRINTER - WRITE CHARACTER (AH=00h)
INT 17 - PRINTER - INITIALIZE PORTIBM PC Portable (uses same BIOS as XT) (AH=01h)
INT 17 - PRINTER - GET STATUS (AH=02h)
INT 18 - DISKLESS BOOT HOOK (START CASSETTE BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN. There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular. All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM.)
INT 19 - SYSTEM - BOOTSTRAP LOADER
INT 1A - TIME - GET SYSTEM TIME (AH=00h)
INT 1A - TIME - SET SYSTEM TIME (AH=01h)
INT 1A - TIME - GET REAL-TIME CLOCK TIME (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=02h)
INT 1A - TIME - SET REAL-TIME CLOCK TIME (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=03h)
INT 1A - TIME - GET REAL-TIME CLOCK DATE (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=04h)
INT 1A - TIME - SET REAL-TIME CLOCK DATE (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=05h)
INT 1A - TIME - SET ALARM (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=06h)
INT 1A - TIME - CANCEL ALARM (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (AH=07h)
INT 1A - TIME - SET RTCsee Real-Time Clock ACTIVATED POWER ON MODE (CONVERTIBLE) (AH=08h)
INT 1A - TIME - READ RTCsee Real-Time Clock ALARM TIME AND STATUS (CONVIBM Convertible,PS30IBM PS/2 Model 30 and below) (AH=09h)
INT 1A - TIME - READ SYSTEM-TIMER DAY COUNTER (XT2IBM PC XT 2,PSIBM PS/2, any model) (AH=0Ah)
INT 1A - TIME - SET SYSTEM-TIMER DAY COUNTER (XT2IBM PC XT 2,PSIBM PS/2, any model) (AH=0Bh)
INT 1A - TIME - SET RTCsee Real-Time Clock DATE/TIME ACTIVATED POWER-ON MODE (IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911.) (AH=0Ch)
INT 1A - TIME - RESET RTCsee Real-Time Clock DATE/TIME ACTIVATED POWER-ON MODE (IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911.) (AH=0Dh)
INT 1A - TIME - GET RTCsee Real-Time Clock DATE/TIME ALARM AND STATUS (IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911.) (AH=0Eh)
INT 1A - TIME - INITIALIZE REAL-TIME CLOCK (AH=0Fh)
INT 1B - KEYBOARD - CONTROL-BREAK HANDLER {callout or callback}
INT 1C - TIME - SYSTEM TIMER TICK
INT 1D - SYSTEM DATA - VIDEO PARAMETER TABLES
INT 1E - SYSTEM DATA - DISKETTE PARAMETERS
INT 1F - SYSTEM DATA - 8x8 GRAPHICS FONT
INT 40 - DISKETTE - ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. DISKETTE HANDLER RELOCATED BY HARD DISK BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly.
INT 41 - SYSTEM DATA - HARD DISK 0 PARAMETER TABLE ADDRESS [NOT A VECTOR!]
INT 46 - SYSTEM DATA - HARD DISK 1 DRIVE PARAMETER TABLE ADDRESS [NOT A VECTOR!]
INT 48 - KEYBOARD - CORDLESS KEYBOARD TRANSLATION (PCjr)
INT 49 - SYSTEM DATA - NON-KEYBOARD SCAN-CODE TRANSLATION TABLE (PCjr)
INT 4A - SYSTEM - USER ALARM HANDLER {callout or callback}
INT 4D - TI Professional PCIBM PC - DISK - RESET DISK SYSTEM (AH=00h)
INT 4D - TI Professional PCIBM PC - DISK - GET STATUS OF LAST OPERATION (AH=01h)
INT 4D - TI Professional PCIBM PC - DISK - READ SECTOR(S) INTO MEMORY (AH=02h)
INT 4D - TI Professional PCIBM PC - DISK - WRITE SECTOR(S) FROM MEMORY (AH=03h)
INT 4D - TI Professional PCIBM PC - DISK - VERIFY DISK SECTOR CRC(S) (AH=04h)
INT 4D - TI Professional PCIBM PC - DISK - NOP (AH=05h)
INT 4D - TI Professional PCIBM PC - DISK - VERIFY DISK SECTOR(S) (AH=06h)
INT 4D - TI Professional PCIBM PC - DISK - GET RETRY STATUS OF LAST OPERATION (AH=07h)
INT 4D - TI Professional PCIBM PC - DISK - SET STANDARD DEVICE INTERFACE TABLE (AH=08h)
INT 4D - TI Professional PCIBM PC - DISK - SET DEVICE INTERFACE TABLE ADDRESS (AH=09h)
INT 4D - TI Professional PCIBM PC - DISK - GET DEVICE INTERFACE TABLE ADDRESS (AH=0Ah)
INT 4D - TI Professional PCIBM PC - DISK - TURN OFF ALL DRIVES (AH=0Bh)
INT FE - ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80 - destroyed by return from protected mode
INT FF - ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80 - destroyed by return from protected mode