INT 20 - Frontier Technologies ??? - VxDA virtual device driver for Windows 3.x or 95. So called because nearly all of the Windows 3.0 drivers had names of the form "VdeviceD". See also device driver. SERVICES {protected mode} () INT 21 - DESQ??? - INSTALLATION CHECK (AX=30FFh/CX=4445h/DX=5351h) INT 21 - VIRUS- "GOLGI" - INSTALLATION CHECK (AX=DDEFh) INT 21 - VIRUS??? (AH=4Ah/BX=00B6h) INT 21 - VIRUS??? (AH=4Ah/BX=FFFFh/CX=0568h/SI=0129h/DI=0000h) INT 21 - VIRUS??? (AH=D2h) INT 24 VECTOR ATIBM PC AT START OF BASICA.COM EXECUTION (MEM 0050h:001Ah) INT 2F - ??? (MOUSEPWR.COM, others) - ??? {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=530Bh) INT 2F - ??? - CALLED BY Borland C++ 3.0 DPMILOAD.EXE {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=FB42h/BX=0080h) INT 2F - ??? - CALLED BY Borland C++ 3.0 DPMILOAD.EXE {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=FB42h/BX=0081h) INT 2F - ??? {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=47h) INT 2F - ??? {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=86h/AL=06h) INT 2F - ??? {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=AF00h) INT 2F - ??? {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=AF02h) INT 2F - ??? {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=AF03h) INT 2F - ??? {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=AF04h) INT 2F - ??? {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=AF05h) INT 2F - ??? {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=AF12h) INT 2F - ??? {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=AF13h) INT 2F - ??? {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=AF30h) INT 2F - Arabic/Hebrew DOS 5.0???+ - GET CURRENT FONTPAGE (AX=AD41h) INT 2F - Arabic/Hebrew DOS 5.0???+ - GET FONTPAGE STATUS??? (AX=AD43h) INT 2F - Arabic/Hebrew DOS 5.0???+ SET CURRENT FONTPAGE (AX=AD42h) INT 2F - DOS ExtenderA program which allows a program to run in protected mode while still retaining access to real-mode MSDOS services. See also Protected Mode. support??? {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=44h/AL=0Bh) INT 2F - MS Windows "WINOLDAP" - CloseClipboard (AX=1708h) INT 2F - MS Windows "WINOLDAP" - COMPACT CLIPBOARD (AX=1709h) INT 2F - MS Windows "WINOLDAP" - EMPTY CLIPBOARD (AX=1702h) INT 2F - MS Windows "WINOLDAP" - GET CLIPBOARD DATA (AX=1705h) INT 2F - MS Windows "WINOLDAP" - GET CLIPBOARD DATA SIZE (AX=1704h) INT 2F - MS Windows "WINOLDAP" - GET DEVICE CAPABILITIES (AX=170Ah) INT 2F - MS Windows "WINOLDAP" - IDENTIFY WinOldAp VERSION (AX=1700h) INT 2F - MS Windows "WINOLDAP" - OPEN CLIPBOARD (AX=1701h) INT 2F - MS Windows "WINOLDAP" - SET CLIPBOARD DATA (AX=1703h) INT 2F - Novell ??? - REMOTE FILE COPY (AX=11F0h) INT 2F - PC-NFS ??? - GET ??? (AX=FE08h) INT 2F - PC-NFS ??? - INSTALLATION CHECK (AX=FE00h/BX=4454h/CX=4B52h/DX=4E4Dh) INT 2F - PC-NFS ??? - INSTALLATION CHECK (AX=FE00h/BX=4454h/CX=4B52h/DX=544Dh) INT 2F - ThunderByte??? - DISINFECT FILE??? {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=C987h) INT 2F - ThunderByte??? - INSTALLATION 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=C900h/BP=0000h) INT 2F - Windows 3+ (OS/2 2.x???) - GET VIRTUAL DEVICE DRIVER (VDD) CAPABILTIES (AX=4000h) INT 40 CASCADE (INT 42, Western Digital WD1002 SuperBIOS) INT 40 CASCADE (INT 47, Western Digital WD1002-27X SuperBIOS) INT 4Bh FLAGS (PS2 and newer) (MEM 0040h:007Bh) INT 53 - WEB??? - API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. () INT 67 - "SB Live!" Sound Blaster 16 Emulation Driver - INSTALLATION CHECK (AX=DEE1h/BX=0C55h) INT 67 - NETROOM??? - ??? {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=5857h) INT 68 - ??? - INSTALLATION 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=4300h) INT 68 - ??? {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=4400h) INT 78 REDIRECT (INT 81, Gravis UltraSound, MEGA_EM v3.0+, AX=2010h) INTCFG v2.1 - ??? {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.} (INT 2F, AX=9F01h) INTCFG v2.1 - GET ??? {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.} (INT 2F, AX=9F30h) INTEGR. VALUE WHITE PEAK (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 9Ch/32h, Philips SAA7110(A) ONE-CHIP FRONT-END) INTEGRATION VALUE GAIN (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 9Ch/2Dh, Philips SAA7110(A) ONE-CHIP FRONT-END) Intel 82091AA Advanced Integrated Peripheral (PORTIBM PC Portable (uses same BIOS as XT) 0022-0023) Intel 82091AA Advanced Integrated Peripheral (PORTIBM PC Portable (uses same BIOS as XT) 0024-0025) Intel 82091AA Advanced Integrated Peripheral (PORTIBM PC Portable (uses same BIOS as XT) 026E-026F) Intel 82091AA Advanced Integrated Peripheral (PORTIBM PC Portable (uses same BIOS as XT) 0398-0399) INTEL 82347 POWER MANAGEMENT PERIPHERAL (PORTIBM PC Portable (uses same BIOS as XT) 0026-0027) INTEL 82355, PART OF CHIPSET FOR 386sx (PORTIBM PC Portable (uses same BIOS as XT) 0022-002B) Intel 82357 (PORTIBM PC Portable (uses same BIOS as XT) 040D-040F, EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus).) INTEL 82360SL CHIPSET (FOR 386SL) (PORTIBM PC Portable (uses same BIOS as XT) 0022-0025) Intel 82374EB/SB EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). CHIPSET (PORTIBM PC Portable (uses same BIOS as XT) 0022-0023) Intel 82378ZB embedded DMAsee Direct Memory Access controller (PORTIBM PC Portable (uses same BIOS as XT) 040A-043F) Intel 82443BX - "PM2_CTL" ACPI Power Control 2 Register (PORTIBM PC Portable (uses same BIOS as XT) 0022) Intel Above Board (PORTIBM PC Portable (uses same BIOS as XT) 0258-025F) Intel 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. Upgrade (CALL xxxxh:xxxxh) Intel Plug-and-Play AUTO-CONFIGURATION - ??? (INT 1A, AX=B407h) Intel Plug-and-Play AUTO-CONFIGURATION - GET ??? (INT 1A, AX=B405h) Intel Plug-and-Play AUTO-CONFIGURATION - GET AVAILABLE IRQs??? (INT 1A, AX=B404h) Intel SatisFAXtion CASMGR - ??? (INT 2F, AX=CB80h) Intel SatisFAXtion CASMGR - ??? (INT 2F, AX=CB81h) Intel SatisFAXtion CASMGR - ??? (INT 2F, AX=CB82h) Intel System Management Bus 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. (CALL xxxxh:xxxxh) Intel386sx CHIPSET 82231 (PORTIBM PC Portable (uses same BIOS as XT) 0080-009F) INTERCEPT VINES 25th-LINE MESSAGES (INT 61, Banyan VINES, TALKPORT SERVICE, AX=0008h/BX=0003h) INTERFACE (INT 21, Advanced 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. Programming Interface (ASPI), AX=4402h/CX=0004h) INTERFACE (INT 21, ATA Software Programming Interface (ATASPI), AX=4402h/CX=0004h) INTERFACE (INT 21, Greg Shenaut ASPITAPE.SYS, AX=440Ch) INTERFACE (INT 65, Ad Lib SOUND.COM) INTERFACE (INT 7A, Canon IX-30F Image Scanner SI3.SYS, AH=7Ah) INTERFACE BOARD SELF-TEST (INT 78, TARGA.DEV, AH=08h) INTERFACE TO NBNS (INT 61, Banyan VINES, AX=0010h) internal - ??? (INT 15, DESQview v2.20+, AX=DE18h) INTERNAL - ??? {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.} (INT 10, VIDEO, HP 100LX/200LX, AH=D1h/AL=01h) INTERNAL - ??? {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.} (INT 10, VIDEO, HP 100LX/200LX, AH=D4h/AL=29h) internal - ??? {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.} (INT 2F, NORTON UTILITIES 5.0+ DISKMON, FILESAVE / EP, AX=FE04h/DI=4E55h) internal - ??? {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.} (INT 2F, NORTON UTILITIES 5.0+ DISKMON, FILESAVE / EP, AX=FE05h/DI=4E55h) internal - GET ??? {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.} (INT 10, VIDEO, DESQview 2.0x only, AH=81h/DX=4456h) internal - SET ??? HANDLER {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.} (INT 10, VIDEO, DESQview 2.0x only, AH=80h/DX=4456h) INTERNAL API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. INITIALIZATION (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PC3270 EMUL PROG v3, AX=FF01h) INTERNAL API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. INITIALIZATION (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PC3270 EMUL PROG v3, AX=FF03h) INTERNAL API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. TERMINATION (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PC3270 EMUL PROG v3, AX=FF02h) INTERNAL INITIALIZATION {partially documented} (INT 67, Nanosoft MD386, AX=5D03h) INTERNAL POSTsee Power-On Self-Test OPERATIONS (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 13h, PS/2IBM PS/2, any model MCA) INTERNAL SEND/RECEIVE FUNCTION (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PC3270 EMUL PROG v3, AX=FE01h) INTERNAL SEND/RECEIVE FUNCTION (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PC3270 EMUL PROG v3, AX=FE02h) INTERNAL TERMINAL (INT 2F, ZyXEL ZFAX v3+, AX=DB40h) INTERNAL VINES SOCKET API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. (NEAR DATA) (INT 61, Banyan VINES, AX=0001h/DS=0001h) internal {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.} (INT 21, Windows95, AX=71A3h) internal {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.} (INT 21, Windows95, AX=71A4h) internal {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.} (INT 21, Windows95, AX=71A5h) INTERNAL {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.} (INT 7A, Novell NetWare, IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. Driver, BX=001Bh) internal {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.} (INT FF, QEMM-386.SYS v6.0+) INTERROGATE DRIVER (INT 10, EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors. Register Interface Library, AH=FAh/BX=0000h) INTERRUPT COMMAND REGISTER (ICR) (MEM FEE0h:0300h, Pentium +, LOCAL APIC) INTERRUPT COMMAND REGISTER (ICR) (MEM FEE0h:0310h, Pentium +, LOCAL APIC) INTERRUPT CONTROL [not XTIBM PC XT] (MEM 0040h:008Eh, FIXED DISK) INTERRUPT ON CHAR FROM HOST (INT 61, Banyan VINES, ASYNC TERMINAL EMULATION, AX=0003h) INTERRUPT ON HOST MESSAGE (INT 61, Banyan VINES, ASYNC TERMINAL EMULATION, AX=0003h) INTERRUPT REQUEST (INT 7C, SK-UPPS Data Link Interface API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., DLI 2.8+, AX=0017h) INTERRUPT REQUEST REGISTER (IRR) (MEM FEE0h:0200h, Pentium +, LOCAL APIC) Interrupt Sharing Protocol (CALL xxxxh:xxxxh) INTERRUPT VECTOR TABLE {real mode} (MEM 0000h:0000h) INTLC & PORTIBM PC Portable (uses same BIOS as XT) Pin Control (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Eh/1Fh, ITT VDP 31xxB) INTMON v2.1 - DISPLAY CPU(Central Processing Unit) The microprocessor which executes programs on your computer. REGISTERS??? {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.} (INT 2F, AX=9E02h) INTMON v2.1 - HOOK INTERRUPT??? {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.} (INT 2F, AX=9E03h) INTO DETECTED OVERFLOW {callout or callback} (INT 04, CPU-generated) INTRA-APPLICATION COMMUNICATION AREA (MEM 0040h:00F0h) INTRSPY v1.0 only (CALL xxxxh:xxxxh) INVALID (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:0003h, Pentium) INVALID (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:000Fh, Pentium) INVALID FUNCTION (INT 2F, CATC USB4DOS Host Controller, AX=BB00h) INVALID OPCODE {callout or callback} (INT 06, CPU-generated (80186+)) INVALID TASK STATE SEGMENT {callout or callback, protected mode} (INT 0A, CPU-generated (80286+)) Invalidate CacheCaching is a method of increasing performance by keeping frequently-used data in a location which is more quickly accessed. The most common caches are disk caches (store disk sectors in RAM) and RAM caches (store portions of main memory in special high-speed RAM which may be accessed as fast as the CPU is capable of accessing memory). See also Delayed Write, Write-Through. Buffer (OPCODE INVD) Invalidate Page Entry In TLB (OPCODE INVLPG) Invert a Specified bit (OPCODE NOT1) INVOKE CRITICAL ERROR {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.} (INT 2F, DOS 3.0+ internal, AX=1206h) INVOKE FIRMWARE DEBUGGER (INT 20, COMTROL HOSTESS i/ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA. DEBUGGER) INVOKE HOT KEY (INT 15, HUNTER 16, AH=7Ah) INVOKE NOTEPAD EDITOR {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.} (INT 16, PCIBM PC Tools v5.1-8.0 DESKTOP, AX=FFF6h) INVOKE REMOTE TURBO DEBUGGER KERNEL (INT 27, COMTROL HOSTESS i/ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA. DEBUGGER) IOCTL - GET ??? FOR SPECIFIED DRIVE (INT 21, DBLSPACE.BIN v6.2, AX=4404h) IOCTL - GET ??? TABLE {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.} (INT 21, LASTBYTE.SYS v1.19, AX=4402h/CX=0004h) IOCTL - SET CONFIGURATION??? (INT 21, PGS1600.DEV, AX=4403h/CX=0018h) IOCTL INPUT (INT 21, CD-ROM device driver, AX=4402h) IOCTL INPUT (INT 21, DRFAT32.SYS device driver, AX=4402h) IOCTL OUTPUT (INT 21, CD-ROM device driver, AX=4403h) IOCTL OUTPUT (INT 21, Compaq AG1024.SYS, CPQ_MGES, AX=4403h) IOCTL OUTPUT (INT 21, Compaq AG1024.SYS, RGDI, AX=4403h) IOCTL {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.} (INT 2F, DOS 3.3+ internal, AX=122Bh) IOMEGA DRIVERS - GET DRIVER INFORMATION??? {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.} (INT 2F, AX=5710h/DX=496Fh) IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. (CALL xxxxh:xxxxh, Novell NetWare) IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. GENERATE CHECKSUM (INT 7A, Novell NetWare, IPXODI v2.12+, BX=0021h) IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. GET PACKET SIZE {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.} (INT 7A, Novell NetWare, IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. Driver, internal, BX=000Dh) IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. VERIFY CHECKSUM (INT 7A, Novell NetWare, IPXODI v2.12+, BX=0022h) IPXODI (CALL xxxxh:xxxxh, Novell NetWare) IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. (MEM 0040h:00D5h, Digiboard MV/4) IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. activity events #1 (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 64h, AWARD, POWER MANAGEMENT) IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. activity events #2 (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 65h, AWARD, POWER MANAGEMENT) IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. POLLING TIMER TO HOST (INT 14, Digiboard, CCB COMMAND, AX=164Eh) IRQ0 (INT 40, TI Professional PCIBM PC) IRQ0 relocated by DESQview (INT 50) IRQ0 relocated by DoubleDOS (INT 58) IRQ0 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program (INT 50) IRQ0 relocated by OS/2 v1.x (INT 50) IRQ1 - ??? (INT F9, Sanyo MBC-550/555) IRQ1 (INT 41, TI Professional PCIBM PC) IRQ1 relocated by DESQview (INT 51) IRQ1 relocated by DoubleDOS (INT 59) IRQ1 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program (INT 51) IRQ1 relocated by OS/2 v1.x (INT 51) IRQ10 relocated by DESQview 2.26+ (INT 5A) IRQ11 relocated by DESQview 2.26+ (INT 5B) IRQ12 relocated by DESQview 2.26+ (INT 5C) IRQ13 relocated by DESQview 2.26+ (INT 5D) IRQ14 relocated by DESQview 2.26+ (INT 5E) IRQ15 relocated by DESQview 2.26+ (INT 5F) IRQ2 (INT 42, TI Professional PCIBM PC) IRQ2 relocated by DESQview (INT 52) IRQ2 relocated by DoubleDOS (INT 5A) IRQ2 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program, OS/2 v1.x (INT 52) IRQ3 relocated by DESQview (INT 53) IRQ3 relocated by DoubleDOS (INT 5B) IRQ3 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program, OS/2 v1.x (INT 53) IRQ4 (INT 44, TI Professional PCIBM PC) IRQ4 relocated by DESQview (INT 54) IRQ4 relocated by DoubleDOS (INT 5C) IRQ4 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program, OS/2 v1.x (INT 54) IRQ5 (INT 45, TI Professional PCIBM PC) IRQ5 relocated by DESQview (INT 55) IRQ5 relocated by DoubleDOS (INT 5D) IRQ5 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program, OS/2 v1.x (INT 55) IRQ6 relocated by DESQview (INT 56) IRQ6 relocated by DoubleDOS (INT 5E) IRQ6 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program, OS/2 v1.x (INT 56) IRQ7 relocated by DESQview (INT 57) IRQ7 relocated by DoubleDOS (INT 5F) IRQ7 relocated by IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3278 emulation control program, OS/2 v1.x (INT 57) IRQ8 relocated by DESQview 2.26+ (INT 58) IRQ9 relocated by DESQview 2.26+ (INT 59) IS BINDERY OBJECT IN SET (INT 21, Novell NetWare, BINDERY SERVICES, AH=E3h) ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA./PCMCIA Ethernet Controller (PORTIBM PC Portable (uses same BIOS as XT) 0xx0-0xxF, Intel 82595TX) ISOLAN Multi Protocol Software (INT 5B) ISSUE CONTROL REQUEST (INT 6B, NPC NCSI EXTENDED SERIAL I/O, AH=1Eh) ISSUE PROTECTED-MODE XMSsee Extended Memory Specification CALL {protected mode} (INT 2C, Cloaking, AX=0023h) ISSUE REAL INTERRUPT (INT 21, OS/286, OS/386, AH=E3h) ISSUE REAL PROCEDURE CALL (INT 21, OS/286, OS/386, AH=E1h) ISSUE REAL PROCEDURE SIGNAL FROM PROTECTED MODE {protected mode} (INT 21, OS/286, OS/386, AH=E6h) ISSUE REAL-MODE INTERRUPT {protected mode} (INT 21, Phar Lap 386/DOS-Extender, AX=2511h) ITT MSP 3400C Multistandard Sound Processor (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 80h) ITT MSP 3400C Multistandard Sound Processor (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 84h) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/12h) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/1Fh) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/42h) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/43h) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/46h) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/4Ah) ITT VDP 3108 - ??? (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/4Eh) ITT VPX 32xx - ??? (Main Test Register?) {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/39h) ITT VPX 32xx - ??? (Test Register - FP) {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/3Ah) ITT VPX 32xx - ??? (Test Register - Front End, Chroma 1?) {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/2Fh) ITT VPX 32xx - ??? (Test Register - Front End, Chroma 2?) {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/2Eh) ITT VPX 32xx - ??? (Test Register - Front End, Luma 2?) {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/3Eh) ITT VPX 32xx - ??? (Test Register - Front End, Luma1?) {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/3Fh) ITT VPX 32xx - ??? Status {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/F4h) ITT VPX 32xx - ??? Status {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/F5h) ITT VPX 32xx - ??? Status {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/F6h) ITT VPX 32xx - ??? Status {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/F7h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D0h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D1h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D2h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D3h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D4h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D5h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D6h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/D7h) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/DAh) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/DBh) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/DCh) ITT VPX 32xx - ??? {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.} (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/E9h) IWSBSDRV v1.41 - ??? (CALLS VIWD.VXD) (INT 7E, AL=83h) IWSBSDRV v1.41 - ??? (INT 7E, AL=81h) IWSBSDRV v1.41 - GET ??? (INT 7E, AL=80h) IWSBSDRV v1.41 - GET ??? (INT 7E, AL=82h) IWSBSDRV v1.41 - SET ??? FLAG (INT 7E, AL=85h) IWSBSDRV v1.41 - WAKE PROGRAM??? (INT 7E, AL=84h) JAM.SYS v1.10+ - "Attach" - MOUNT COMPRESSED DRIVE (INT 2F, AX=5202h) JAM.SYS v1.10+ - "Detach" - UNMOUNT COMPRESSED DRIVE (INT 2F, AX=5203h) JAM.SYS v1.10+ - "GetInfo" - GET COMPRESSED DRIVE INFORMATION (INT 2F, AX=5201h) JAM.SYS v1.10+ - "GetVersion" - INSTALLATION CHECK (INT 2F, AX=5200h) JAM.SYS v1.10+ - "Lock" - LOCK COMPRESSED DRIVE (INT 2F, AX=5204h) JAM.SYS v1.10+ - "Read" - PHYSICAL READ DATA FROM JAM ARCHIVE (INT 2F, AX=5206h) JAM.SYS v1.10+ - "UnLock" - UNLOCK COMPRESSED DRIVE (INT 2F, AX=5205h) JAM.SYS v1.10+ - "Write" - PHYSICAL WRITE DATA TO JAM ARCHIVE (INT 2F, AX=5207h) JEDEC MANUFACTURER ID (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/00h, ITT VPX 32xx/322xD) JEDEC2 (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/03h, ITT VPX 32xx/322xD) JIS to Shift-JIS CONVERSION (INT 17, AX (Japanese ATIBM PC AT) PRINTER, AH=51h) JM Pro Tracker v5.0 - ??? (INT 83, AH=00h) JM Pro Tracker v5.0 - ??? (INT 83, AH=01h/DX=FFFFh) JM Pro Tracker v5.0 - ??? (INT 83, AH=02h) JM Pro Tracker v5.0 - ??? (INT 83, AH=03h) JM Pro Tracker v5.0 - ??? (INT 83, AH=0Bh) JM Pro Tracker v5.0 - ??? (INT 83, AH=0Ch) JM Pro Tracker v5.0 - ??? (INT 83, AH=0Dh) JM Pro Tracker v5.0 - ??? (INT 83, AH=0Eh) JM Pro Tracker v5.0 - ??? (INT 83, AH=0Fh) JM Pro Tracker v5.0 - ??? (INT 83, AH=10h) JM Pro Tracker v5.0 - ??? (INT 83, AH=11h) JM Pro Tracker v5.0 - ??? (INT 83, AH=13h) JM Pro Tracker v5.0 - ??? (INT 83, AH=14h) JM Pro Tracker v5.0 - ??? (INT 83, AH=16h) JM Pro Tracker v5.0 - CLEAR ??? (INT 83, AH=12h) JM Pro Tracker v5.0 - GET ??? (INT 83, AH=15h) JM Pro Tracker v5.0 - PAUSE??? (INT 83, AH=09h) JM Pro Tracker v5.0 - RESUME??? (INT 83, AH=0Ah) JM Pro Tracker v5.0 - SET ??? BUFFER (INT 83, AH=05h) JM Pro Tracker v5.0 - SET ??? BUFFER (INT 83, AH=06h) JM Pro Tracker v5.0 - SET ??? BUFFER (INT 83, AH=07h) JM Pro Tracker v5.0 - SET DMAsee Direct Memory Access BUFFER??? (INT 83, AH=04h) JM Pro Tracker v5.0 - START PLAYING??? (INT 83, AH=08h) JOB SKIP PRINTER QUEUE (INT 17, PCIBM PC Magazine PCSpool, AH=C5h) Joystick fire button 1 scancode/ASCII code (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 19h-1Ah, AMSTRAD) Joystick fire button 2 scancode/ASCII code (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 1Bh-1Ch, AMSTRAD) JOYSTICK SUPPORT (XTIBM PC XT after 1982/11/8,ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) (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., AH=84h) JOYSTICK SUPPORT (INT 15, V20-XT-BIOS, AH=84h) Jump and change to 64-bit ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA.. (OPCODE JMPE) JUMP TO REAL MODE CODE, NO CONTEXT {protected mode} (INT 21, Phar Lap 386/DOS-Extender v3.0+, AX=253Bh) KERNEL API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. (INT 2C, STARLITE architecture) KERNEL IDLE CALL {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.} (INT 2F, MS Windows 3.0+, AX=1689h) KEY PRESSED (INT 18, NEC PC-9800 series, KEYBOARD, AH=04h) KEY REPEAT (MEM 0040h:0069h, V20-XT-BIOS) KEYB.COM KEYBOARD CAPABILITIES CHECK (not an actual function!) (INT 16, AH=92h) KEYB.COM KEYBOARD CAPABILITIES CHECK (not an actual function!) (INT 16, AH=A2h) KEYBOARD BREAK KEY VECTOR {callout or callback} (INT 5D, TI Professional PCIBM PC, AX=0000h) KEYBOARD BUFFER END+1 OFFSET FROM SEGMENT 40h (normally 3Eh) (MEM 0040h:0082h) KEYBOARD BUFFER START OFFSET FROM SEGMENT 40h (normally 1Eh) (MEM 0040h:0080h) KEYBOARD BUSY LOOP {callout or callback, 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.} (INT 2A, NETWORK, AH=84h) KEYBOARD CONTROLLER 804x (8041, 8042) (or PPI (8255) on PCIBM PC,XTIBM PC XT) (PORTIBM PC Portable (uses same BIOS as XT) 0060-006F) KEYBOARD DATA READY {callout or callback} (INT 09, IRQ1) KEYBOARD DRIVER (INT 67, PC-DRAFT) KEYBOARD FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use. (INT 14, AH=82h) 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} (INT 15, KEYBOARD, AH=4Fh) KEYBOARD MAPPING HOOK {callout or callback} (INT 5B, TI Professional PCIBM PC) KEYBOARD OUTPUT-BUFFER-FULL SERVICE ROUTINE {callout or callback} (INT 69, HP Vectra ATIBM PC AT, IRQ17) KEYBOARD PAUSE KEY VECTOR {callout or callback} (INT 5C, TI Professional PCIBM PC, AX=0100h) KEYBOARD PRINT-SCREEN VECTOR {callout or callback} (INT 5E, TI Professional PCIBM PC) KEYBOARD QUEUEING VECTOR {callout or callback} (INT 5F, TI Professional PCIBM PC) KEYBOARD READ WITH WAIT (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=0Eh) KEYBOARD READ WITHOUT WAIT (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=0Dh) KEYBOARD SERVICES (INT 51, Tandy 2000) KEYBOARD SERVICES (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3270 Workstation Program API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AH=09h/BX=8020h/CX=0000h) KEYBOARD STATUS BYTE 1 (MEM 0040h:0096h) KEYBOARD STATUS BYTE 2 (MEM 0040h:0097h) KEYBOARD TYPE (MEM 0040h:00C2h, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. 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. 1.00.12.AX1T) KEYBOARD TYPEMATIC DATA (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 11h, older AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. Hi-Flex 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.) KEYBOARD USART(Universal Synchronous/Asynchronous Receiver/Transmitter) see also UART (INT 47, TI Professional PCIBM PC, IRQ7) KEYBOARD USART(Universal Synchronous/Asynchronous Receiver/Transmitter) see also UART RECEIVE INTERRUPT (INT FB, Sanyo MBC-550/555, IRQ3) Keyboard, Retrace, and Light Pen (INT 46, Z100, Master 8259) KEYCLICK VOLUME (MEM 0040h:0016h, Compaq Deskpro 386) KEYED CHANGE BINDERY OBJECT PASSWORD (INT 21, Novell NetWare, AX=F217h/DX=0000h) KEYED VERIFY BINDERY OBJECT PASSWORD (INT 21, Novell NetWare, AX=F217h/DX=0000h) KILL PROCESS (INT 15, Object Kernel for DOS, AX=3002h) KILL PROGRAM IN MEMORY PARTITION (INT 21, Software Carousel, AX=DF02h) KKCFUNC {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.} (INT 2F, AH=4Dh) Kofax KF9X00 image manipulation card interface (INT 63) Kraft Mouse - GET ??? (INT 33, AX=0055h) L2AAR (Level 2 CACHE ACCESS REGISTER) (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. C000h:0089h, AMD K6-III) LAN Manager Enhanced DOS - ??? (INT 2F, AX=1184h) LAN Manager Enhanced DOS - ??? (INT 2F, AX=118Bh) LAN Manager Enhanced DOS - ??? (INT 2F, AX=118Ch) LAN Manager Enhanced DOS - ??? (INT 2F, AX=118Eh) LAN Manager Enhanced DOS - KILL ALL CONNECTIONS??? {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.} (INT 21, AX=5F55h) LAN Manager Enhanced DOS - WRITE MAILSLOT??? {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.} (INT 21, AX=5F3Dh) LAN Manager Enhanced DOS Services - ??? (INT 2F, AX=1180h) LAN Manager Enhanced DOS Services - SET USER NAME??? (INT 2F, AX=1181h) LANstep - ??? (INT 21, AH=CFh) LAST EXCEPTION OPCODE (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 8000h:001Bh, Pentium, FLOATING POINT) LAST NON-CONTROL OPCODE (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 8000h:001Ah, Pentium, FLOATING POINT) LAST OPERATION STATUS (MEM 0040h:0041h, DISKETTE) LAST PREFETCHED OPCODE (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 8000h:0019h, Pentium, FLOATING POINT) LAST VALUE READ FROM CASSETTE (MEM 0040h:006Bh, CASSETTE (PCIBM PC only)) LAT SERVICE TABLE RESET (INT 6A, DECnet DOS LOCAL AREA TRANSPORT, AX=D600h/DH=FFh) LCD(Liquid Crystal Display) display on Wyse 2108 PCIBM PC (PORTIBM PC Portable (uses same BIOS as XT) 0280) LCD(Liquid Crystal Display) MODE TIMEOUT (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 69h, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. 1990 Hyundai super-NB368S notebook) LCD(Liquid Crystal Display) SCREEN LARGE POINTER SUPPORT (INT 33, MS MOUSE v8.10+, AX=0035h) LCD(Liquid Crystal Display) TIMEOUT (PORTIBM PC Portable (uses same BIOS as XT) 27C6, Compaq LTE Lite) LCD(Liquid Crystal Display)/CRT DISPLAY CONTROL (INT 10, VIDEO, FLAT-PANEL, AX=1E01h) LCS/Telegraphics MOUSE DRIVERS - ??? {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.} (INT 33, AX=00B0h) LCS/Telegraphics MOUSE DRIVERS - ??? {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.} (INT 33, AX=00F0h) LCS/Telegraphics MOUSE DRIVERS - ??? {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.} (INT 33, AX=00F1h) LCS/Telegraphics MOUSE DRIVERS - ??? {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.} (INT 33, AX=00F2h) LCS/Telegraphics MOUSE DRIVERS - ??? {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.} (INT 33, AX=00F3h) LENGTH OF DATA TABLE (MEM 0040h:00D0h, Digiboard MV/4) LET SYSMGR PROCESS FILE SEL MENU KEYSTROKE {partially documented} (INT 60, HP 95LX System Manager, DI=0207h) LET SYSTEM MANAGER HANDLE MENU KEYSTROKE {partially documented} (INT 60, HP 95LX System Manager, DI=0204h) LET SYSTEM MANAGER PROCESS EDITING KEYSTROK {partially documented} (INT 60, HP 95LX System Manager, DI=0403h) LFN-FindClose (INT 21, Windows95 beta, AH=72h) LHJ - ??? (INT 2F, LAN HiJack, AX=7ACAh) LHJ - ??? (INT 2F, LAN HiJack, AX=7ACBh) LHJ - ??? (INT 2F, LAN HiJack, AX=7ACCh) LHR - CLEAR ??? FLAG (INT 2F, LAN HiJack, AX=7AC3h) LHR - DISABLE??? (INT 2F, LAN HiJack, AX=7AC1h) LHR - SYNCHRONIZE SHIFT STATES??? (INT 2F, LAN HiJack, AX=7AC2h) LIGHT PEN EMULATION OFF (INT 33, MS MOUSE v1.0+, AX=000Eh) LIGHT PEN EMULATION ON (INT 33, MS MOUSE v1.0+, AX=000Dh) LIMIT AUTOMATIC ACTIVATION TO STD EMSsee Expanded Memory Specification CALLS {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.} (INT 21, Qualitas 386MAX v7.00+, AX=4403h) LIMIT PROGRAM'S CONVENT'L MEM USAGE {protected mode} (INT 21, Phar Lap 386/DOS-Extender VMM, AX=2525h) LIMIT PROGRAM'S EXTENDED MEM USAGE {protected mode} (INT 21, Phar Lap 386/DOS-Extender VMM, AX=2521h) Limiter (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/5Ah, ITT VDP 31xxB) Line Draw Engine (PORTIBM PC Portable (uses same BIOS as XT) 83C0-83CF, Compaq QVision) LINE DRAW OPTIONS (PORTIBM PC Portable (uses same BIOS as XT) A2EE-A2EF, ATI Mach8/Mach32) LINE ERROR TERM 2 (PORTIBM PC Portable (uses same BIOS as XT) 92EA-92EB, S3 Trio64) Line Length (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Eh/21h, ITT VDP 31xxB) LINE PRINTER (INT 54, Tandy 2000) LINEDRAW INDEX REGISTER (PORTIBM PC Portable (uses same BIOS as XT) 9AEE, ATI Mach8/Mach32) Lines in Last Frame (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/28h/EBh, ITT VPX 32xx, FP) LINK TO ANOTHER SERIAL DRIVER (INT 14, PC-MOS/386 v5.01 $serial.sys v5.04, AH=16h) Linux DOSEMU - SET "HOGTHRESHOLD" (INT E6, AH=12h) LIST PROCESSES (INT 15, Object Kernel for DOS, AX=3007h) LIST RELATIONS OF AN OBJECT (INT 21, Novell NetWare, AX=F217h) LISTEN FOR INCOMING CONNECTIONS (INT 63, BW-TCP, TCPIP.SYS, AH=12h) LISTEN FOR PACKET (INT 7A, Novell NetWare, IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. Driver, BX=0004h) LISTEN FOR SPX CONNECTION (INT 7A, Novell NetWare, SPX Driver, BX=0012h) LISTEN FOR SPX PACKET (INT 7A, Novell NetWare, SPX Driver, BX=0017h) LOAD .MOD FILE (INT 18, Gravis Ultra Sound EURO_MOD.EXE, AX=8001h) LOAD 8x16 GRAPH CHARS (Compaq Systempro) (INT 10, VIDEO, GRAPH-MODE CHARGEN, AX=1129h) LOAD 8x16 GRAPHICS CHARS (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.,MCGAMulti-Color Graphics Array(Multi-Color Graphics Array) The low-end color adapter offered in IBMInternational Busiuness Machines's early PS/2IBM PS/2, any model series machines.) (INT 10, VIDEO, GRAPH-MODE CHARGEN, AX=1124h) LOAD ACCELERATION PROFILES (INT 33, MS MOUSE v7.0+, AX=002Bh) Load All Registers (OPCODE LOADALL) Load All Registers From Table (OPCODE LOADALL) LOAD AND RUN PROGRAM FROM DISK (INT 62, Cswitch, AH=0Fh) LOAD CHARACTER GENERATOR (INT 2F, ANSIPLUS v3.00+, AX=1AACh) LOAD DS (INT 61, HP 95LX System Manager) LOAD FLAT MODEL .EXP or .REX FILE {protected mode} (INT 21, Phar Lap 386/DOS-Extender, AX=2529h) LOAD LIBRARY FILE (INT 31, DOS32 v3.2+, AX=EE11h) LOAD MIDPAK DRIVER (INT 66, MIDPAK, AX=0710h/CX=0000h) LOAD NEW ANIMATION DISPLAY CODE (INT 2F, Explosiv v3.0+, AX=C058h) LOAD PALETTE (INT 2F, Intel Image Processing Interface, AX=CD0Ah) LOAD PICTURE (INT 10, CU Writer v1.4, AH=D0h) LOAD PROGRAM FOR DEBUGGING {protected mode} (INT 21, Phar Lap 386/DOS-Extender, AX=2512h) LOAD REGISTER (INT 10, SOLLEX SuperVGA, AX=7F05h) LOAD ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 8x16 CHARACTER SET (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1104h) LOAD ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 8x16 CHARACTER SET (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1114h) LOAD ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 8x8 DBL-DOT PATTERNS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1102h) LOAD ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 8x8 DBL-DOT PATTERNS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1112h) LOAD ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. MONOCHROME PATTERNS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1101h) LOAD ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. MONOCHROME PATTERNS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1111h) LOAD SCREEN (INT 2F, Intel Image Processing Interface, AX=CD09h) LOAD SOUND DATA (INT 18, Gravis Ultra Sound YEA_GUS.EXE, AX=6906h) LOAD SOUND FOR LATER PLAY THROUGH KEYBOARD {partially documented} (INT 94, Media Vision PCM.COM, SI=8012h) Load Streaming SIMD Extension Control/Status (OPCODE LDMXCSR) LOAD SYSTEM ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. DEFAULT LCD(Liquid Crystal Display) CHARACTER FONT (CONVIBM Convertible,CP386Compaq Portable 386) (INT 10, VIDEO, AX=1401h) LOAD TASK {callout or callback, protected mode, 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.} (INT 41, MS Windows debugging kernel, AX=0059h) LOAD ULTRAVISION PALETTE (color EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, UltraVision, AX=CD00h) LOAD USER FONT (EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, UltraVision, AX=CD10h/CX=ABCDh) LOAD USER-SPECIFIED LCD(Liquid Crystal Display) CHARACTER FONT (CONVIBM Convertible,Compaq Port 386) (INT 10, VIDEO, AX=1400h/BL=00h) LOAD USER-SPECIFIED PATTERNS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1100h) LOAD USER-SPECIFIED PATTERNS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, TEXT-MODE CHARGEN, AX=1110h) LOADALL WORKSPACE (MEM 0080h:0000h, 80286 CPU(Central Processing Unit) The microprocessor which executes programs on your computer.) LOCAL APIC (MEM FEE0h:0000h, Pentium) LOCAL APIC ID REGISTER (MEM FEE0h:0020h, Pentium, LOCAL APIC) LOCAL APIC VERSION REGISTER (MEM FEE0h:0030h, Pentium, LOCAL APIC) LOCAL DosPeekNmPipe {partially documented} (INT 21, Named Pipes, AX=5F35h) LOCAL DosPrintJobGetId {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F43h) LOCAL DosQNmPHandState {partially documented} (INT 21, Named Pipes, AX=5F33h) LOCAL DosQNmPipeInfo {partially documented} (INT 21, Named Pipes, AX=5F32h/DX=0001h) LOCAL DosRawReadNmPipe {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.} (INT 21, Named Pipes, AX=5F39h) LOCAL DosRawWriteNmPipe {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.} (INT 21, Named Pipes, AX=5F3Ah) LOCAL DosSetNmPHandState {partially documented} (INT 21, Named Pipes, AX=5F34h) LOCAL DosTransactNmPipe {partially documented} (INT 21, Named Pipes, AX=5F36h) LOCAL NetMessageBufferSend {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F40h) LOCAL NetRemoteCopy {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F4Ah)