CANCEL PRINTER QUEUE (FLUSH ALL QUEUED OUTPUT) (INT 17, PCIBM PC Magazine PCSpool, AH=C3h) CANCEL REDIRECTION (INT 21, DOS 3.1+ network, AX=5F04h/CX=4E57h) CANCEL SERVER SHUTDOWN (INT 21, LANtastic v4.0+, AX=5FC9h) CANCEL SESSION (INT 16, pcANYWHERE III, AH=7Ah) CANCEL SPECIFIC LPTAbbreviation for Line PrinTer. CAPTURE (INT 21, Novell NetWare, PRINT SERVICES, AH=DFh/DL=06h) CANCEL TIMING EVENT (INT 52, TI Professional PCIBM PC) CANCEL TopShow FUNCTION (INT 21, TopWare Network OS v5.10+, AX=FF8Eh) CANCEL TopShow FUNCTION (INT 21, TopWare Network OS v5.10+, AX=FFBCh/CL=00h) Canon IXHND2 Scanner Interface (INT 7F) CANONICALIZE FILE NAME {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=1221h) CAPTION MODE (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. 28h/01h, Philips SAA5252) CARD VENDOR ID (MEM C000h:7FF8h, Matrox MGA Video Adapters) CardBus Bridge registers (PORTIBM PC Portable (uses same BIOS as XT) 03E0-03E1, OPTi 82C824) CardBus Bridge registers (PORTIBM PC Portable (uses same BIOS as XT) 03E2-03E3, OPTi 82C824) CASSETTE CRC REGISTER (MEM 0040h:0069h, CASSETTE (PCIBM PC only)) CASSETTE TIME COUNT (MEM 0040h:0067h, PCIBM PC only) CATC USB4DOS Host Controller - ??? (POLLS VARIOUS I/O PORTS) (INT 2F, AX=BB00h/BX=0003h) CATC USB4DOS Host Controller - GET ??? (INT 2F, AX=BB00h/BX=0001h) CauseWay - "AliasSel" - CREATE READ/WRITE DATA ALIAS SELECTOR {protected mode} (INT 31, AX=FF06h) CauseWay - "CodeSel" - CONVERT SELECTOR TO EXECUTABLE CODE SELECTOR {protected mode} (INT 31, AX=FF05h) CauseWay - "ExecOverlay" - LOAD AND OPTIONALLY EXECUTE APP CODE {protected mode} (INT 31, AX=FF24h) CauseWay - "FarCallReal" - SIMULATE REAL-MODE FAR CALL {protected mode} (INT 31, AX=FF02h) CauseWay - "GetDOSTrans" - GET DOS TRANSFER BUFFER {protected mode} (INT 31, AX=FF25h) CauseWay - "GetMem" - ALLOCATE BLOCK OF MEMORY {protected mode} (INT 31, AX=FF0Bh) CauseWay - "GetMem32" - ALLOCATE BLOCK OF MEMORY (32-bit) {protected mode} (INT 31, AX=FF0Ch) CauseWay - "GetMemDOS" - ALLOCATE CONVENTIONAL MEMORY {protected mode} (INT 31, AX=FF21h) CauseWay - "GetMemLinear" - ALLOCATE MEMORY WITHOUT SELECTOR {protected mode} (INT 31, AX=FF10h) CauseWay - "GetMemLinear32" - ALLOCATE MEMORY WITHOUT SELECTOR {protected mode} (INT 31, AX=FF11h) CauseWay - "GetMemNear" - ALLOCATE APPLICATION-RELATIVE MEMORY {protected mode} (INT 31, AX=FF16h) CauseWay - "GetSel" - ALLOCATE NEW SELECTOR {protected mode} (INT 31, AX=FF03h) CauseWay - "GetSelDet" - GET SELECTOR BASE AND LIMIT {protected mode} (INT 31, AX=FF07h) CauseWay - "GetSelDet32" - GET SELECTOR BASE AND LIMIT (32-bit) {protected mode} (INT 31, AX=FF08h) CauseWay - "Info" - GET SYSTEM SELECTORS/FLAGS {protected mode} (INT 31, AX=FF00h) CauseWay - "IntXX" - SIMULATE REAL-MODE INTERRUPT {protected mode} (INT 31, AX=FF01h) CauseWay - "Linear2Near" - CONVERT LINEAR TO APP-RELATIVE ADDRESS {protected mode} (INT 31, AX=FF19h) CauseWay - "LockMem" - LOCK REGION OF MEMORY {protected mode} (INT 31, AX=FF1Bh) CauseWay - "LockMem32" - LOCK REGION OF MEMORY (32-bit) {protected mode} (INT 31, AX=FF1Ch) CauseWay - "LockMemNear" - LOCK APPLICATION-RELATIVE MEMORY REGION {protected mode} (INT 31, AX=FF1Fh) CauseWay - "Near2Linear" - CONVERT APP-RELATIVE TO LINEAR ADDRESS {protected mode} (INT 31, AX=FF1Ah) CauseWay - "RelMem" - RELEASE PREVIOUSLY ALLOCATED MEMORY {protected mode} (INT 31, AX=FF0Fh) CauseWay - "RelMemDOS" - RELEASE CONVENTIONAL MEMORY BLOCK {protected mode} (INT 31, AX=FF23h) CauseWay - "RelMemLinear" - RELEASE LINEAR MEMORY BLOCK {protected mode} (INT 31, AX=FF14h) CauseWay - "RelMemLinear32" - RELEASE LINEAR MEMORY BLOCK (32-bit) {protected mode} (INT 31, AX=FF15h) CauseWay - "RelMemNear" - RELEASE APPLICATION-RELATIVE MEMORY BLOCK {protected mode} (INT 31, AX=FF18h) CauseWay - "RelSel" - RELEASE A SELECTOR {protected mode} (INT 31, AX=FF04h) CauseWay - "ResMem" - RESIZE MEMORY BLOCK {protected mode} (INT 31, AX=FF0Dh) CauseWay - "ResMem32" - RESIZE MEMORY BLOCK (32-bit) {protected mode} (INT 31, AX=FF0Eh) CauseWay - "ResMemDOS" - RESIZE CONVENTIONAL MEMORY BLOCK {protected mode} (INT 31, AX=FF22h) CauseWay - "ResMemLinear" - RESIZE LINEAR MEMORY BLOCK {protected mode} (INT 31, AX=FF12h) CauseWay - "ResMemLinear32" - RESIZE LINEAR MEMORY BLOCK (32-bit) {protected mode} (INT 31, AX=FF13h) CauseWay - "ResMemNear" - RESIZE APPLICATION-RELATIVE MEMORY BLOCK {protected mode} (INT 31, AX=FF17h) CauseWay - "SetDOSTrans" - SET DOS TRANSFER BUFFER {protected mode} (INT 31, AX=FF26h) CauseWay - "SetSelDet" - SET SELECTOR BASE AND LIMIT {protected mode} (INT 31, AX=FF09h) CauseWay - "SetSelDet32" - SET SELECTOR BASE AND LIMIT (32-bit) {protected mode} (INT 31, AX=FF0Ah) CauseWay - "UnLockMem" - UNLOCK REGION OF MEMORY {protected mode} (INT 31, AX=FF1Dh) CauseWay - "UnLockMem32" - UNLOCK REGION OF MEMORY (32-bit) {protected mode} (INT 31, AX=FF1Eh) CauseWay - "UnLockMemNear" - UNLOCK APP-RELATIVE MEMORY REGION {protected mode} (INT 31, AX=FF20h) CauseWay v1.3 - "cwcInfo" - VALIDATE AND GET SIZE OF CWC FILE {protected mode} (INT 31, AX=FF2Bh) Causeway v1.3 - "cwcLoad" - LOAD/EXPAND CWC-COMPRESSED FILE {protected mode} (INT 31, AX=FFFBh) CauseWay v1.3 - "cwLoad" - LOAD ANOTHER CAUSEWAY PROGRAM AS OVERLAY {protected mode} (INT 31, AX=FF2Ah) CauseWay v1.3 - "GetMCBSize" - GET CURRENT MCBsee Memory Control Block ALLOCATION BLOCK SIZE {protected mode} (INT 31, AX=FF27h) CauseWay v1.3 - "GetMemSO" - ALLOCATE MEMORY AND RETURN SEL:OFFSET {protected mode} (INT 31, AX=FF2Ch) CauseWay v1.3 - "GetSels" - ALLOCATE MULTIPLE SELECTORS {protected mode} (INT 31, AX=FF29h) CauseWay v1.3 - "RelMemSO" - RELEASE SELECTOR:OFFSET MEMORY BLOCK {protected mode} (INT 31, AX=FF2Eh) CauseWay v1.3 - "ResMemSO" - RESIZE SELECTOR:OFFSET MEMORY BLOCK {protected mode} (INT 31, AX=FF2Dh) CauseWay v1.3 - "SetMCBSize" - SET MCBsee Memory Control Block MEMORY ALLOCATION BLOCK SIZE {protected mode} (INT 31, AX=FF28h) CCB COMMAND (INT 14, Digiboard DigiCHANNEL PCIBM PC/X*, AH=16h/CL=4Eh) CEMM v5.10+ Private 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. (CALL xxxxh:xxxxh) CENTER ZOOM WINDOW (INT 61, OPTIMA 1024 VGA-Sync,ET-3000 chipset, AX=0001h) CENTURY (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 7Fh, AMD-645 Clock) CGAColor Graphics Adapter(Color/Graphics Adapter) One of the two video display boards introduced together with the original IBMInternational Busiuness Machines PCIBM PC. See also HGC, MDA. TEXT/GRAPHICS BUFFER (MEM B800h:0000h) Chack Array Index Against Bounds (OPCODE BOUND) CHAIN TO REAL-MODE HANDLER (INT 21, OS/286, OS/386, AX=E400h) CHAIN TO V86-MODE INTERRUPT HANDLER {protected mode} (INT 2C, Cloaking, AX=0027h) CHANGE ANIMATION DISPLAY (INT 2F, Explosiv v2.x, AX=C05Bh) CHANGE ATTRIBUTE (INT 50, PCIBM PC Thuis Organizer Shell, AX=000Bh) CHANGE ATTRIBUTE (INT 50, Vanderaart TEXT WINDOWS, AX=0005h) CHANGE AUDITOR PASSWORD (INT 21, Novell NetWare, AX=F258h) CHANGE BAUD RATE (INT 14, Digiboard DigiCHANNEL PCIBM PC/X*, AH=04h) CHANGE BINDERY OBJECT PASSWORD (INT 21, Novell NetWare, AX=F217h/DX=0000h) CHANGE BINDERY OBJECT PASSWORD (INT 21, Novell NetWare, BINDERY SERVICES, AH=E3h) CHANGE BINDERY OBJECT SECURITY (INT 21, Novell NetWare, AX=F217h/DX=0000h) CHANGE BINDERY OBJECT SECURITY (INT 21, Novell NetWare, BINDERY SERVICES, AH=E3h) CHANGE CODE PAGE {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 2F, NLSFUNC.COM, AX=1401h) CHANGE CONNECTION STATE (INT 21, Novell NetWare v4, AX=F217h) CHANGE CONSOLE MODE (INT 7F, Alloy MW386, AH=C5h) CHANGE CURRENT UNIX DIRECTORY (INT E6, Linux DOSEMU, AH=81h) CHANGE DIRECTORY (INT 21, Windows95, LONG FILENAME, AX=713Bh) CHANGE DRIVER ADDRESS (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., AX=0003h) CHANGE FIRMWARE DEBUGGING PORTIBM PC Portable (uses same BIOS as XT) (INT 22, 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) CHANGE INTERNAL FLAGS (INT 2F, QRIP/TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination., AX=AC01h/DI=1092h) CHANGE JOB PRIORITY (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) CHANGE KEYBOARD FOCUS {callout or callback} (INT 2F, DESQview v2.26+ External Dev Interface, AX=DE0Ah) CHANGE LOGICAL UNIT (INT 68, APPC/PCIBM PC, AH=03h) CHANGE NAME OF DOS TASK (INT 7F, Alloy MW386, AH=E3h) CHANGE NUMBER OF SESSIONS (INT 68, APPC/PCIBM PC, AH=06h) CHANGE PARTITION NAME (INT 21, Software Carousel, AX=DF06h/CX=18h) CHANGE PARTITION SIZE (INT 21, Software Carousel, AX=DF05h) CHANGE PASSWORD (INT 21, LANtastic, AX=5F85h) CHANGE PASSWORD ENTRY {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 2F, Novell DOS 7+ FDOS EXTENSIONS, AX=1021h) CHANGE PHYSICAL PORTIBM PC Portable (uses same BIOS as XT) PARAMETERS (INT 14, Alloy MW386 v2+, AH=24h) CHANGE PORTIBM PC Portable (uses same BIOS as XT) PROTOCOL (INT 14, PC-MOS/386 v5.01 $serial.sys v5.04, AH=05h) CHANGE PROPERTY SECURITY (INT 21, Novell NetWare, AX=F217h/DX=0000h) CHANGE PROPERTY SECURITY (INT 21, Novell NetWare, BINDERY SERVICES, AH=E3h) CHANGE PROTOCOL (INT 14, Digiboard DigiCHANNEL PCIBM PC/X*, AH=05h) CHANGE QUEUE JOB ENTRY (OLD) (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) CHANGE QUEUE JOB ENTRY (OLD) (INT 21, Novell NetWare, QUEUE SERVICES, AH=E3h) CHANGE QUEUE JOB ENTRY (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) CHANGE QUEUE JOB POSITION (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) CHANGE QUEUE JOB POSITION (INT 21, Novell NetWare, QUEUE SERVICES, AH=E3h) CHANGE SEGMENT ATTRIBUTES {protected mode} (INT 21, Phar Lap 386/DOS-Extender, AX=2514h) CHANGE SEGMENTS {protected mode} (INT 21, OS/286, OS/386, AH=E9h) CHANGE TASK'S PRIORITY (INT 15, MultiDOS Plus, AH=09h) CHANGE TEMPORARY SPOOL(Simultaneous Peripheral Operation OnLine) The process of performing output to a slow peripheral such as a printer while other tasks continue running on the CPU. This term dates back to mainframe days before the invention of timesharing. DRIVE (INT 17, Alloy MW386, AH=A9h) CHANGE TERMINAL DRIVER (INT D4, PC-MOS/386 v5.01, AH=23h) CHANGE TIME SLICE INTERVAL (INT 15, MultiDOS Plus, AH=0Ah) CHANGE TO CLIENT RIGHTS (OLD) (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) CHANGE TO CLIENT RIGHTS (OLD) (INT 21, Novell NetWare, QUEUE SERVICES, AH=E3h) CHANGE TO CLIENT RIGHTS (INT 21, Novell NetWare v3.1+, AX=F217h/DX=0000h) CHANGE USER PASSWORD (OLD) (INT 21, Novell NetWare, AX=F217h/DX=0000h) CHANGE USER PASSWORD (OLD) (INT 21, Novell NetWare, CONNECTION SERVICES, AH=E3h) CHAR HEIGHT HOOK (INT 10h, LIRVGA19) CHARACTER HEIGHT IN SCAN-LINES (MEM 0040h:0085h, VIDEO (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./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./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.)) CHARACTER INPUT WITHOUT ECHO (INT 21, DOS 1+, AH=08h) CHARACTER TABLE (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.,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.,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 43, VIDEO DATA) CHAT (INT 6F, 10NET v5.0, AH=8Ah) CHAT (INT 6F, 10NET, AH=0Ah) CHDIR {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 2F, NETWORK REDIRECTOR, AX=1105h) CHECK AUDIT ACCESS (INT 21, Novell NetWare, AX=F258h) CHECK AUDIT LEVEL TWO ACCESS (INT 21, Novell NetWare, AX=F258h) CHECK BOARD ADDRESS {partially documented} (INT 94, Media Vision PCM.COM, SI=8002h) CHECK CONSOLE PRIVILEGES (INT 21, Novell NetWare, AX=F217h/DX=0000h) CHECK CONSOLE PRIVILEGES (INT 21, Novell NetWare, FILE SERVER, AH=E3h) CHECK DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. 6-BIT/8-BIT mode (INT 10, VIDEO, Compaq Extensions, AX=BF0Eh) CHECK DIRECT I/O (INT 2A, NETWORK, AX=0300h) CHECK FOR 122-KEY KEYSTROKE (122-key kbd support only) (INT 16, KEYBOARD, AH=21h) CHECK FOR AND GET KEYSTROKE {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=FFE6h) CHECK FOR BREAK SIGNAL (INT 6B, TelAPI, AH=08h) CHECK FOR dPressed FILE AND GET COMPRESSED SIZE (INT 2D, dLite 1.0+, AL=12h) CHECK FOR dPressed FILE AND GET ORIGINAL SIZE (INT 2D, dLite 1.0+, AL=11h) CHECK FOR ENHANCED KEYSTROKE (enh kbd support only) (INT 16, KEYBOARD, AH=11h) CHECK FOR EVENT {partially documented} (INT 60, HP 95LX System Manager, DI=0101h) CHECK FOR KEYSTROKE (CALL 0060h:0003h, Eagle MS-DOS v1.25 IO.SYS) CHECK FOR KEYSTROKE (INT 16, KEYBOARD, AH=01h) CHECK FOR KEYSTROKE (INT 18, NEC PC-9800 series, KEYBOARD, AH=01h) CHECK FOR NEW INPUT (INT 2F, AD-DOS, AX=C002h) CHECK FOR USER FUNCTION COMMAND-WORD (INT 16, Shamrock Software EMAIL, AX=4504h) CHECK IF BLOCK DEVICE REMOTE (INT 21, DOS 3.1+, IOCTL, AX=4409h) CHECK IF BLOCK DEVICE REMOVABLE (INT 21, DOS 3.0+, IOCTL, AX=4408h) CHECK IF CC CONNECTED TO CCHELP (INT 10, CARBON COPY PLUS v5.0, AX=FF00h) CHECK IF CHARACTER DEVICE {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=1223h) CHECK IF CONNECTION ALIVE (INT 5C, $25 LAN, AH=04h) CHECK IF DRIVE CACHEABLE {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 2F, SMARTDRV v4.00+, AX=4A10h/BX=0006h) CHECK IF DRIVE READY (INT 13, HARD DISK, AH=10h) CHECK IF FUNCTION SUPPORTED (INT 16, K3PLUS v6.00+ (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. v2.0+), AX=AF50h/BX=4B33h/CL=00h) CHECK IF HANDLE IS REMOTE (INT 21, DOS 3.1+, IOCTL, AX=440Ah) CHECK IF HiColor MODE/SET HiColor MODE {partially documented} (INT 10, VIDEO, Tseng ET-4000 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., AX=10F2h) CHECK IF MAPPED DRIVE {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, PCIBM PC Tools v8.0 DRIVEMAP, AX=9201h) CHECK IF MultiDOS FOREGROUND OR BACKGROUND (INT 15, MultiDOS Plus, AH=14h) CHECK IF MULTITASKING ENABLED (INT 15, MultiDOS Plus v4.01, AH=20h) CHECK IF PORTIBM PC Portable (uses same BIOS as XT) BUSY (INT 14, COURIERS.COM, AH=81h) CHECK IF PORTIBM PC Portable (uses same BIOS as XT) IN USE (INT 2F, INTERLNK, AX=5602h/DX=FFFFh) CHECK IF REDIRECTED DRIVE (INT 2F, INTERLNK, AX=5601h/DX=FFFFh) CHECK IF TASK RUNNING PRIMARY COMMAND INTERPRETER (INT 2F, DR DOS 6.0 TaskMAX, AX=270Dh) CHECK MAILBOX (INT 15, MultiDOS Plus, AH=05h) CHECK MS-DOS VERSION 7 (INT 2F, Windows95, AX=4A33h) CHECK OPEN FILES (INT 2F, DR DOS 6.0 TaskMAX, AX=270Ch) CHECK OUTPUT QUEUE (INT 14, PC-MOS/386 v5.01 $serial.sys v5.04, AH=20h) CHECK PASSWORD ENTRY {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 2F, Novell DOS 7+ FDOS EXTENSIONS, AX=1022h) CHECK PIPE STATUS (INT 21, Novell NetWare, AX=F215h) CHECK PIPE STATUS {obsolete} (INT 21, Novell NetWare, MESSAGE SERVICES, AH=E1h) CHECK PORTIBM PC Portable (uses same BIOS as XT) ASSIGNMENT (INT 7F, Alloy MW386 v1.x only, AH=31h) CHECK PRINTER DRIVER (INT 17, Alloy NTNX, AH=92h/AL=00h/CL=00h) CHECK PRINTER QUEUE STATUS (INT 17, PCIBM PC Magazine PCSpool, AH=C6h) CHECK SEMAPHORE (INT 62, Cswitch, AH=03h) CHECK SERVICE (INT 61, Banyan VINES, AH=01h) CHECK SPEAKER STATUS (INT 48, TI Professional PCIBM PC, SPEAKER DEVICE, AH=01h) CHECK SPOOLER (INT 17, Alloy MW386, AH=AFh) CHECK STATUS (INT 16, pcANYWHERE III, AH=79h) CHECK STATUS OF PREVIOUS LOAD_TASK (INT 62, Cswitch, AH=13h) CHECK VINES REVISION NUMBER IN RANGE (LONG) (INT 61, Banyan VINES, AH=08h) CHECK VINES REVISION NUMBER IN RANGE (INT 61, Banyan VINES, AH=04h) CHECK WHETHER DESKTOP LOADED RESIDENT {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=FFC5h) CHECK WHETHER ENABLED (INT 14, DimVGA v2.0+, AX=AA0Ah) CHECK WHETHER PROGRAM ENABLED {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, SpaceManager, AX=C306h) CHECK WHETHER VIDEO REVERSED (INT 10, VIDEO, Compaq Extensions, AX=BF0Bh) CHECKSUM MEMORY {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, DOS 3.0+ internal, AX=121Ch) checksum over bytes 29h-2Dh (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 28h, HP Vectra) CHIP ID, HIGH BYTE (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/02h, ITT VPX 32xx/322xD) CHIP ID, LOW BYTE (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/01h, ITT VPX 32xx/322xD) CHIP IDENTIFICATION REGISTER (PORTIBM PC Portable (uses same BIOS as XT) FAEE, ATI Mach32) CHIP SET CONFIGURATION REGISTERS (PORTIBM PC Portable (uses same BIOS as XT) 0022-0023, GoldStar 286) CHIP SET DATA (PORTIBM PC Portable (uses same BIOS as XT) 0022-0023) CHIP VERSION (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. 48h/00h, Philips SAA7111) Chips&Technologies CS4021 - "SuperState V" ALTERNATE CONFIG (PORTIBM PC Portable (uses same BIOS as XT) 0026-0027) CHIPSET FROM ACT (PORTIBM PC Portable (uses same BIOS as XT) 00E0-00E1) CHIPSET FROM ETEC CHEETAH ET6000 (SINGLE CHIP) (PORTIBM PC Portable (uses same BIOS as XT) 0022-0023) CHIPSET FROM PICO POWER, UMC or PCChips (PORTIBM PC Portable (uses same BIOS as XT) 0022-0024) CHROMA U GAIN (SATURATION), LOW BYTE (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. 88h/0Dh, Brooktree Bt819A) CHROMA V GAIN (SATURATION), HIGH BYTE (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. 88h/0Eh, Brooktree Bt819A) CHROMINANCE GAIN REFERENCE (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/11h, Philips SAA7110(A) ONE-CHIP FRONT-END) CHROMINANCE SATURATION (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/12h, Philips SAA7110(A) ONE-CHIP FRONT-END) Chrontel CH7002 Video Encoder (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. FAh) Chrontel CH7002 Video Encoder (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. FCh) CiriSOFT Spanish University of Valladolid TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination.'s Interface (INT 2F, AL=00h/ES:DI=1492h) CLAMPING LEVEL CONTROL 21 (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/23h, Philips SAA7110(A) ONE-CHIP FRONT-END) CLAMPING LEVEL CONTROL 22 (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/24h, Philips SAA7110(A) ONE-CHIP FRONT-END) CLAMPING LEVEL CONTROL 31 (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/25h, Philips SAA7110(A) ONE-CHIP FRONT-END) CLAMPING LEVEL CONTROL 32 (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/26h, Philips SAA7110(A) ONE-CHIP FRONT-END) CLEAR BUFFERS (INT 14, Digiboard DigiCHANNEL PCIBM PC/X*, AH=09h) CLEAR BUFFERS (INT 14, MultiDOS Plus, AH=25h) CLEAR CLIPBOARD CONTENTS (INT 16, PUPClip v1.12+, AX=CB05h) CLEAR CONNECTION NUMBER (LOGOUT STATION) (INT 21, Novell NetWare v3+, AX=F217h/DX=0000h) CLEAR CONNECTION NUMBER (INT 21, Novell NetWare, FILE SERVER, AH=E3h) CLEAR CONNECTION NUMBER GREATER THAN 250 (INT 21, Novell NetWare v4, AX=F217h/DX=0000h) CLEAR CRITICAL SECTION {protected mode} (INT 2C, Cloaking v1.01, AX=001Eh) CLEAR DEBUG WATCHPOINT {protected mode} (INT 31, DPMIsee DOS Protected-Mode Interface 0.9+, AX=0B01h) CLEAR ENTIRE GRAPHICS SCREEN (INT 49, TI Professional PCIBM PC, CRT, AH=14h) CLEAR ENTIRE TEXT SCREEN AND HOME CURSOR (INT 49, TI Professional PCIBM PC, CRT, AH=13h) CLEAR EVENT COUNTER (INT 15, MultiDOS Plus, AX=1E00h) CLEAR FAKED KEYSTROKES (INT 16, FAKEY.COM, AH=72h) CLEAR FILE (FCBsee File Control Block) {obsolete} (INT 21, Novell NetWare, Alloy NTNX, AH=CEh) CLEAR FILE (INT 21, Novell NetWare, AX=F207h/DX=0000h) CLEAR FILE (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AH=EDh) CLEAR FILE SET (INT 21, Novell NetWare, AX=F208h/DX=0000h) CLEAR FILE SET (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AH=CFh) CLEAR KEYBOARD BUFFER (CALL 0060h:0027h, Eagle MS-DOS v1.25 IO.SYS) CLEAR KEYBOARD BUFFER FOR CURRENT JOB (INT 21, DoubleDOS, AH=E1h) CLEAR KEYBOARD BUFFER FOR CURRENT JOB (INT 21, DoubleDOS, AH=F1h) CLEAR LOGICAL RECORD (INT 21, Novell NetWare, AX=F20Bh/DX=0000h) CLEAR LOGICAL RECORD (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AH=D4h) CLEAR LOGICAL RECORD SET (INT 21, Novell NetWare, AX=F20Eh/DX=0000h) CLEAR LOGICAL RECORD SET (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AH=D5h) CLEAR NONVOLATILE MEMORY (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). CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption.) (INT 15, 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). SYSTEM ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs., AX=D802h) Clear one bit (OPCODE CLEAR1) CLEAR PAGE (INT 2F, Intel Image Processing Interface, AX=CD06h) CLEAR PHYSICAL RECORD (INT 21, Novell NetWare, AX=F21Eh/DX=0000h) CLEAR PHYSICAL RECORD (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AH=BEh) CLEAR PHYSICAL RECORD SET (INT 21, Novell NetWare, AX=F21Fh/DX=0000h) CLEAR PHYSICAL RECORD SET (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AH=C4h) CLEAR PORTION OF SCREEN {partially documented} (INT 60, HP 95LX System Manager, DI=0301h) CLEAR PROFILING DATA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Microsoft Profiler (PROF.COM/VPROD.386), AX=4505h) CLEAR PROFILING TABLE (INT 60, SYS_PROF.EXE, AH=04h) CLEAR QUEUE (INT 2F, Nanosoft, Inc. CAPDOS, AX=8201h) CLEAR RECEIVE BUFFER (INT 14, Digiboard DigiCHANNEL PCIBM PC/X*, AH=10h) CLEAR RECEIVE BUFFER (INT 6B, NPC NCSI EXTENDED SERIAL I/O, AH=1Ch) CLEAR RECORD (FCBsee File Control Block) {obsolete} (INT 21, Novell NetWare, Alloy NTNX, AH=C1h) CLEAR SCREEN MEMORY (INT 8C, APL(A Programming Language) An interactive, mathematically- oriented language which is well-suited to manipulating matrices. Originally using greek letters and numerous special symbols, thus requiring a special display, versions are now available which use keywords in place of the special symbols.*PLUS/PCIBM PC) CLEAR SCREEN MEMORY (INT CC, APL(A Programming Language) An interactive, mathematically- oriented language which is well-suited to manipulating matrices. Originally using greek letters and numerous special symbols, thus requiring a special display, versions are now available which use keywords in place of the special symbols.*PLUS/PCIBM PC) CLEAR THE RECEIVE BUFFER (INT 14, Microsoft Systems Journal TSRCOMM INT14, AX=0404h) CLEAR THE TRANSMIT BUFFER (INT 14, Microsoft Systems Journal TSRCOMM INT14, AX=0406h) CLEAR TRANSMIT BUFFER (INT 14, Digiboard DigiCHANNEL PCIBM PC/X*, AH=11h) CLIENT (CALL xxxxh:xxxxh, Novell NetWare Lite) CLIENT HOOK (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., AX=0010h) CLIENT UNHOOK (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., AX=0011h) Cloaking v1.01 - "Issue_System_Modal_Message" {protected mode} (INT 2C, AX=0013h) Cloaking v1.01 - "Query_Current_VM" {protected mode} (INT 2C, AX=0012h) Cloaking v1.01 - "Simulate_Shell_Event" {protected mode} (INT 2C, AX=000Fh) Cloaking v1.01 - "Switch_VMs_and_Call_back" {protected mode} (INT 2C, AX=0011h) CLOCK SPEEDS (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 4Ch, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. (PicoPower)) CLOCK 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.} (INT 7D, YTERM 1.4) CLOCK/ANALOG INTERFACE (INT 4C, TI Professional PCIBM PC) CLOSE ALL CHANNELS (INT 7F, Alloy NTNX, MW386, CHANNEL CONTROL, AH=10h/CL=05h) CLOSE ALL FILES FOR GIVEN COMPUTER {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, DOS 3.1+ internal, SHARE.EXE, AX=5D03h) CLOSE ALL FILES FOR GIVEN PROCESS {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, DOS 3.1+ internal, SHARE.EXE, AX=5D04h) CLOSE ALL FILES FOR PROCESS {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 2F, IFSFUNC.EXE (DOS 4.x only), AX=112Ah) CLOSE ALL REMOTE FILES FOR PROCESS (ABORT) {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 2F, NETWORK REDIRECTOR, AX=111Dh) CLOSE BINDERY (INT 21, Novell NetWare, AX=F217h/DX=0000h) CLOSE BINDERY (INT 21, Novell NetWare, BINDERY SERVICES, AH=E3h) CLOSE BOOT LOG {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, Windows95, AX=4A18h) CLOSE CAPTURE 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.} (INT 17, Emulaser ELTSR, AH=08h) CLOSE CHANNEL (INT 7F, Alloy NTNX, MW386, CHANNEL CONTROL, AH=10h/CL=01h) CLOSE CLIPBOARD {partially documented} (INT 60, HP 95LX System Manager, DI=0701h) CLOSE COMMUNICATION (INT 14, Connection Manager, AH=05h/DX=FFFFh) CLOSE COMMUNICATIONS CHANNEL {partially documented} (INT 60, HP 95LX System Manager, DI=0E02h) CLOSE CONNECTION {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, Quarterdeck TELTSR.COM, AX=DF01h) CLOSE CURRENT 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.} (INT 2F, DOS 3.0+ internal, AX=1201h) CLOSE DEVICE (INT 10, VESA(Video Electronics Standards Association) An industry group which sets both hardware and software standards and recommendations. The term VESA is also used to denote compliance with the VESA SuperVGA BIOS Extensions, a standard set of video BIOS functions for accessing video modes of higher resolution than those defined by IBMInternational Busiuness Machines. VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./AI (Audio Interface), AX=4F13h/BX=0004h) CLOSE EXTENDED ATTRIBUTE HANDLE (INT 21, Novell NetWare, AX=F256h/DX=0000h) CLOSE FILE (INT 21, Novell NetWare, AX=F242h/DX=0000h) CLOSE FILE AND START QUEUE JOB (OLD) (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) CLOSE FILE AND START QUEUE JOB (OLD) (INT 21, Novell NetWare, QUEUE SERVICES, AH=E3h) CLOSE FILE AND START QUEUE JOB (INT 21, Novell NetWare, AX=F217h/DX=0000h) CLOSE FILE BY NAME {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, DOS 3.1+ internal, SHARE.EXE, AX=5D02h) CLOSE FILE USING FCBsee File Control Block (INT 21, DOS 1+, AH=10h) CLOSE FILE {partially documented} (INT 60, HP 95LX System Manager, DI=0508h) CLOSE 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.} (INT 2F, DOS 3.3+ internal, AX=1227h) CLOSE GAME DEVICE {real mode} (INT 2F, InterWave Game 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., AX=CD22h) CLOSE MESSAGE PIPE {obsolete} (INT 21, Novell NetWare, MESSAGE SERVICES, AH=E1h) CLOSE NETWORK DESCRIPTOR (INT 63, BW-TCP, TCPIP.SYS, AH=0Eh) CLOSE OLD AUDITING FILE (INT 21, Novell NetWare, AX=F258h) CLOSE PRINTER {partially documented} (INT 60, HP 95LX System Manager, DI=0C01h) CLOSE PRINTER/PRINT 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.} (INT 16, PCIBM PC Tools v5.1-8.0 DESKTOP, AX=FFCFh) CLOSE QUEUE (INT 17, PCIBM PC Magazine PCSpool, AH=C7h) CLOSE REMOTE FILE {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 2F, NETWORK REDIRECTOR, AX=1106h) CLOSE SEMAPHORE (OLD) (INT 21, Novell NetWare, AX=F220h/DX=0000h) CLOSE SEMAPHORE (INT 21, Novell NetWare, AX=F26Fh/DX=0000h) CLOSE SEMAPHORE (INT 21, Novell NetWare, SYNCHRONIZATION SERVICES, AX=C504h) CLOSE SESSION (INT 69, DECnet DOS CTERM, AX=0106h) CLOSE SESSION (INT 6A, DECnet DOS LOCAL AREA TRANSPORT, AX=D000h/DH=FFh) CLOSE SOCKET (INT 61, Banyan VINES, AX=000Fh) CLOSE SOCKET (INT 7A, Novell NetWare, IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. Driver, BX=0001h) CLOSE SPOOL(Simultaneous Peripheral Operation OnLine) The process of performing output to a slow peripheral such as a printer while other tasks continue running on the CPU. This term dates back to mainframe days before the invention of timesharing. 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.} (INT 17, PC-MOS/386 v5.01, PRINT SPOOLER, AH=FFh/BX=0000h/CX=0000h) CLOSE SPOOL(Simultaneous Peripheral Operation OnLine) The process of performing output to a slow peripheral such as a printer while other tasks continue running on the CPU. This term dates back to mainframe days before the invention of timesharing. FILES AND START PRINTING (INT 2F, TopWare Network OS v5.10+, AX=FF23h) CLOSE TEXT WINDOW (INT 50, Vanderaart TEXT WINDOWS, PCIBM PC Thuis Shell, AX=0001h) CLOSE VFOSSIL (INT 14, VIDEO 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., AX=8102h) CLOSE VMM FILE HANDLE {protected mode} (INT 21, Phar Lap 386/DOS-Extender VMM v2.3+, AX=252Dh) CLOSE WINDOW (INT 2F, Kingswood TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. Windows, AX=3901h/BL=05h) cluster (adapter 1) (PORTIBM PC Portable (uses same BIOS as XT) 0790-0793) cluster (adapter 2) (PORTIBM PC Portable (uses same BIOS as XT) 0AE2-0AE3) cluster (adapter 2) (PORTIBM PC Portable (uses same BIOS as XT) 0B90-0B93) cluster (adapter 3) (PORTIBM PC Portable (uses same BIOS as XT) 1390-1393) cluster (adapter 4) (PORTIBM PC Portable (uses same BIOS as XT) 2390-2393) Cluster adapter (ATIBM PC AT) (PORTIBM PC Portable (uses same BIOS as XT) 0390-039F) CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 34h-3Ah - (AWARD) ??? unused ??? Defaults to all FFh's. () CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 38h-3Fh - ??? IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PS/2IBM PS/2, any model - Encrypted Password () CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 42h-43h - ??? () CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 47h-50h - ??? () CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 52h - ??? () CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 54h-7Fh - ??? () CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information. See also Real-Time Clock. BITFIELD MANIPULATION {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 15, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. PCI 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. v1.00.12.AX1T, AX=DA20h) CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information. See also Real-Time Clock./RTCsee Real-Time Clock (REAL TIME CLOCK) (PORTIBM PC Portable (uses same BIOS as XT) 0070-007F) CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. REAL-TIME CLOCK {callout or callback} (INT 70, IRQ8) COLD-BOOT ADDRESS (CALL F000h:FFF0h) COLD-BOOT ADDRESS (CALL FFFFh:0000h) COLOR COMPARE (PORTIBM PC Portable (uses same BIOS as XT) B2E8-B2EB, 8514/A and compatible) COLOR KILLER THRESH QUAM (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/08h, Philips SAA7110(A) ONE-CHIP FRONT-END) COLOR KILLER THRESH SECAM (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/09h, Philips SAA7110(A) ONE-CHIP FRONT-END) Color Lookup Table (array) (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/00h, ITT VDP 3108) Colorburst Frequency (High) {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/28h/1Ah, ITT VPX 3220A, FP) Colorburst Frequency (Low) {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/28h/19h, ITT VPX 3220A, FP) Columbia Data Products Standard Device Level Protocol (SDLP) 1.6 (INT 11, SI=6A6Ah) COLUMNS ON SCREEN (MEM 0040h:004Ah, VIDEO) COM port addresses on UniRAM card by German magazine c't (PORTIBM PC Portable (uses same BIOS as XT) 0238-023F) COM port addresses on UniRAM card by German magazine c't (PORTIBM PC Portable (uses same BIOS as XT) 0338-033F) COM port addresses on UniRAM card by German magazine c't (PORTIBM PC Portable (uses same BIOS as XT) 03E0-03E7) COM port addresses on UniRAM card by German magazine c't (PORTIBM PC Portable (uses same BIOS as XT) 03E8-03EF) COMMAND (INT 13, XBIOS, AX=E000h) COMMAND SUBMISSION (INT 2F, Comwave Microfax Specification, AX=CBDDh/BL=56h) COMMAND SUBMISSION (INT 2F, FaxBIOS interface, AX=80FBh) COMMAND.COM INTERFACE {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 4.x only SHELLB.COM, AX=1902h) COMMAND.COM interface {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 4.x only SHELLB.COM, AX=1903h) COMMAND.COM INTERFACE {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 5+, AX=5500h) COMMIT ALL FILES FOR SPECIFIED COMPUTER/PROCESS {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, DOS 3.1+ internal, AX=5D01h) COMMIT FILE (INT 21, Novell NetWare, AX=F23Dh/DX=0000h) COMMIT 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.} (INT 21, DOS 4.0+, AH=6Ah) COMMIT REMOTE FILE {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 2F, NETWORK REDIRECTOR, AX=1107h) Common Access Method 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. interface (draft revision 1.9) (INT 4B) Common ISDN 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. (CAPI) v1.1 - "API-DEINSTALL" - UNINSTALL (INT F1, AH=06h) Common ISDN 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. (CAPI) v1.1 - "API-GET-MANUFACTURER" (INT F1, AH=F0h) Common ISDN 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. (CAPI) v1.1 - "API-GET-MESSAGE" (INT F1, AH=04h) Common ISDN 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. (CAPI) v1.1 - "API-GET-SERIAL-NUMBER" (INT F1, AH=F2h) Common ISDN 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. (CAPI) v1.1 - "API-GET-VERSION" (INT F1, AH=F1h) Common ISDN 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. (CAPI) v1.1 - "API-MANUFACTURER" - VENDOR-SPECIFIC (INT F1, AH=FFh) Common ISDN 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. (CAPI) v1.1 - "API-PUT-MESSAGE" (INT F1, AH=03h) Common ISDN 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. (CAPI) v1.1 - "API-REGISTER" - INITIALIZE CAPI (INT F1, AH=01h) Common ISDN 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. (CAPI) v1.1 - "API-RELEASE" - UNREGISTER FROM CAPI (INT F1, AH=02h) Common ISDN 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. (CAPI) v1.1 - "API-SET-SIGNAL" - SIGNAL HANDLING (INT F1, AH=05h) Common ISDN 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. (CAPI) v2.0 - "CAPI_GET_MANUFACTURER" (INT F1, AL=F0h) Common ISDN 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. (CAPI) v2.0 - "CAPI_GET_MESSAGE" (INT F1, AL=04h) Common ISDN 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. (CAPI) v2.0 - "CAPI_GET_PROFILE" - GET CAPABILITIES (INT F1, AL=F3h/CX=0000h) Common ISDN 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. (CAPI) v2.0 - "CAPI_GET_SERIAL_NUMBER" (INT F1, AL=F2h) Common ISDN 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. (CAPI) v2.0 - "CAPI_GET_VERSION" (INT F1, AL=F1h) Common ISDN 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. (CAPI) v2.0 - "CAPI_MANUFACTURER" - VENDOR-SPECIFIC (INT F1, AL=FFh) Common ISDN 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. (CAPI) v2.0 - "CAPI_PUT_MESSAGE" (INT F1, AL=03h) Common ISDN 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. (CAPI) v2.0 - "CAPI_REGISTER" - INITIALIZE CAPI (INT F1, AL=01h) Common ISDN 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. (CAPI) v2.0 - "CAPI_RELEASE" - UNREGISTER FROM CAPI (INT F1, AL=02h) Common ISDN 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. (CAPI) v2.0 - "CAPI_SET_SIGNAL" - SIGNAL HANDLING (INT F1, AL=05h) COMMON ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. HARDWARE INTERRUPT EXIT VECTOR (INT 59, TI Professional PCIBM PC) COMMUNICATIONS 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=80h) COMMUNICATIONS I/O THROUGH PORTIBM PC Portable (uses same BIOS as XT) (INT 16, pcANYWHERE III, AH=7Eh) Compaq - VIDEO STATUS??? (PORTIBM PC Portable (uses same BIOS as XT) 13C6) COMPAQ 386 MACHINES (MEM F000h:FFE0h) Compaq ADAPT.COM - GET ??? (INT 10, VIDEO, AX=BFA1h) Compaq ADAPT.COM - GET ??? DATA AREA {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, AX=DFA5h) Compaq ADAPT.COM - SET ??? (INT 10, VIDEO, AX=BFA2h) Compaq Contura - GET ??? (INT 15, AX=E800h) Compaq Contura - GET ??? (INT 15, AX=E802h) Compaq Contura Aero (PORTIBM PC Portable (uses same BIOS as XT) 1C65) Compaq Contura Aero (PORTIBM PC Portable (uses same BIOS as XT) 2065) Compaq Contura Aero (PORTIBM PC Portable (uses same BIOS as XT) 2465) Compaq Contura Aero, Contura 400 - GET SYSTEM MODEL CODE??? (INT 15, AX=E800h) Compaq Deskpro 386 system memory board register (MEM 80C0h:0000h) COMPAQ DIAGNOSTICS REGISTER (MEM 80C0h:0000h) Compaq 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). System ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 04/08/93 - ??? (INT 15, AX=D823h/BL=80h) Compaq 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). System ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 04/08/93 - ??? (INT 15, AX=D824h) Compaq 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). System ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 04/08/93 - ??? (INT 15, AX=D825h) Compaq 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). System ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 04/08/93 - ??? (INT 15, AX=D826h) Compaq 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). System ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 04/08/93 - GET ??? (INT 15, AX=D822h/BL=00h/CX=0000h) Compaq LTE Elite (PORTIBM PC Portable (uses same BIOS as XT) 00EC-00ED) Compaq LTE Elite (PORTIBM PC Portable (uses same BIOS as XT) 00F9) Compaq LTE Elite (PORTIBM PC Portable (uses same BIOS as XT) 00FB) Compaq LTE Lite - GET ??? (INT 15, AX=D820h) Compaq LTE Lite - SET ??? (INT 15, AX=D821h) Compaq POSTsee Power-On Self-Test Diagnostic (PORTIBM PC Portable (uses same BIOS as XT) 0084) Compaq Prolinea - GET ??? (INT 15, AX=E800h) Compaq QVision - ??? {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, AX=BD44h) Compaq ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. 1993/08/03 and newer - ??? (INT 15, AH=E4h) CompaQ 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. adapter. alternate address at 0130 (PORTIBM PC Portable (uses same BIOS as XT) 0330-033F) CompaQ 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. adapter. alternate address at 0330 (PORTIBM PC Portable (uses same BIOS as XT) 0130-013F) CompaQ Tape drive adapter. alternate address at 0100 (PORTIBM PC Portable (uses same BIOS as XT) 0300-030F) CompaQ Tape drive adapter. alternate address at 0300 (PORTIBM PC Portable (uses same BIOS as XT) 0100-010F) Compare and exchange 8 bytes (OPCODE CMPXCHG8B) Compare and exchange (OPCODE CMPXCHG) COMPARE FAR POINTERS {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=1214h) COMPARE FILENAMES {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=121Eh) Compare for packed BCD(Binary Coded Decimal) A method of data storage where two decimal digits are stored in each byte, one in the upper four bits and the other in the lower four bits. Since only the values 0 through 9 are used in each half of a byte, BCD values can be read as decimal numbers on a hexadecimal display of memory or a file. strings (OPCODE CMP4S) COMPARE MEMORY (INT 50, PCIBM PC Thuis Organizer Shell, AX=0012h) COMPATIBILITY MODE (INT 2F, Kingswood TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. INTERFACE, AX=3900h) COMPLETION OF SYSREQ FUNCTION (ATIBM PC AT,XT286IBM PC XT/286,PS50+IBM PS/2 Models 50,60,70,80) (INT 15, OS HOOK, AX=2011h) Compression - ??? {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, LapLink RemoteAccess (LLRA), AX=C301h) Compression - ??? {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, LapLink RemoteAccess (LLRA), AX=C3F0h) Compression - ??? {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, LapLink RemoteAccess (LLRA), AX=C3F1h) COMREDIR.COM - ??? {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 65, NetSoft DOS-NET v1.20+, DX=4741h/BH=08h) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "C_ATTACH" - ATTACH TO DEFAULT CONSOLE (INT E0, CL=92h) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "C_DETACH" - DETACH FROM DEFAULT CONSOLE (INT E0, CL=93h) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "P_DISPATCH" - CALL DISPATCHER (INT E0, CL=8Eh/DX=FFFFh) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "P_PRIORITY" - SET PROCESS PRIORITY (INT E0, CL=91h/DL=FFh) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "Q_CREAD" - CONDITIONALLY READ MSG QUEUE (INT E0, CL=8Ah) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "Q_CWRITE" - CONDITIONALLY WRITE MSG QUEUE (INT E0, CL=8Ch) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "Q_MAKE" - CREATE MESSAGE QUEUE (INT E0, CL=86h) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "Q_OPEN" - OPEN MESSAGE QUEUE (INT E0, CL=87h) ConcCP/MConcurrent CP/M by Digital Research, now DR Multiuser DOS,DR Multiuser DOS - "Q_READ" - READ MESSAGE QUEUE (INT E0, CL=89h)