DESQview v2.23+ - "SCRNINFO" - GET TRUE VIDEO PARAMETERS (INT 15, AX=DE1Eh) DESQview v2.26+ - "ASSERTMAP" - GET/SET MAPPING CONTEXT (INT 15, AX=DE17h) DESQview v2.26+ - "ASSERTVIR" - CONTROL 386 SCREEN VIRTUALIZATION (INT 15, AX=DE21h) DESQview v2.26+ - "CONNECT" - CONNECT TWO WINDOWS (INT 15, AH=12h/BH=03h) DESQview v2.26+ - "DISPATCHINT" - INTERRUPT ANOTHER TASK (INT 15, AX=DE20h) DESQview v2.26+ - "PROCESSMEM" - GET TASK MEMORY STATUS (INT 15, AX=DE22h) DESQview v2.31+ - ??? {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, AX=DE23h) DESQview v2.40+ - "GETDVPATH" - GET DESQview DIRECTORY (INT 15, AX=DE25h) DESQview v2.40+ - "GETFOREGROUND" - GET KEYBOARD FOCUS (INT 15, AX=DE26h) DESQview v2.40+ - "XNEWPROC" - START NEW APPLICATION (INT 15, AX=DE24h) DESQview v2.50+ - "ADDINSTANCEDATA" - ADD PER-TASK SAVE/RESTORE AREA (INT 15, AX=DE27h) DESQview v2.50+ - "DISPATCHINTAFTERDOS" - INTERRUPT ANOTHER TASK (INT 15, AX=DE2Ah/BX=0000h) DESQview v2.50+ - "GETDVXVERSION" - GET DESQview/X VERSION (INT 15, AX=DE30h) DESQview v2.50+ - "OBJNEXT" - TRAVERSE OBJECT LIST (INT 15, AX=DE2Bh) DESQview v2.50+ - "VIDEONOTIFY" - HAS DIRECT WINDOW BEEN ACTIVE? (INT 15, AX=DE2Fh) DESQview v2.50+ - "WININFO" - GET WINDOW INFORMATION (INT 15, AX=DE2Ch/BX=0000h) DESQview v2.50+ - ??? {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, AX=DE28h/BX=0000h) DESQview/X - ??? (INT BE) DESQview/X - ??? {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, AX=DE29h/BX=0000h) DESQview/X - ??? {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, AX=DE29h/BX=0001h) DESQview/X - ??? {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, AX=DE29h/BX=0002h) DESQview/X - ??? {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, AX=DE29h/BX=0003h) DESQview/X - ??? {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, AX=DE29h/BX=0005h) DESQview/X v1.10 - ??? (INT 15, AX=DE31h) DESTINATION FORMAT REGISTER (DFR) (MEM FEE0h:00E0h, Pentium, LOCAL APIC) DESTINATION X COORD 2 / AXIAL STEP CONSTANT 2 (PORTIBM PC Portable (uses same BIOS as XT) 8EEA-8EEB, S3 Trio64) DESTINATION X POSITION (PORTIBM PC Portable (uses same BIOS as XT) 8EE8-8EE9, 8514/A and compatible) DESTINATION Y COORD 2 / AXIAL STEP CONSTANT 2 (PORTIBM PC Portable (uses same BIOS as XT) 8AEA-8AEB, S3 Trio64) DESTINATION Y POSITION (PORTIBM PC Portable (uses same BIOS as XT) 8AE8-8AE9, 8514/A and compatible) DESTROY PASSWORD (LOGOUT FROM DRIVE) (INT 2F, SecureDevice, AX=E203h/DL=FFh) DESTROY QUEUE (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) DESTROY QUEUE (INT 21, Novell NetWare, QUEUE SERVICES, AH=E3h) destroyed by return from protected mode (INT FE, ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80) destroyed by return from protected mode (INT FF, ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80) DESTRUCTIVE READ WITH NO WAIT (INT 14, X00 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=20h) DETACH ASYNCHRONOUS RESOURCE (INT 14, ARTICOM, AX=8005h) DETACH FROM NETWORK DEVICE (INT 21, STARLITE architecture, AX=5F0Ah) DETACH LOGICAL UNIT (INT 68, APPC/PCIBM PC, NETWORK DEVICE CONTROL, AH=01h) DETACH PHYSICAL UNIT (INT 68, APPC/PCIBM PC, NETWORK DEVICE CONTROL, AH=01h) DETACH QUEUE SERVER FROM QUEUE (INT 21, Novell NetWare v2.1+, AX=F217h/DX=0000h) DETACH QUEUE SERVER FROM QUEUE (INT 21, Novell NetWare, QUEUE SERVICES, AH=E3h) DETECT DISK CHANGE (XTIBM PC XT 1986/1/10 or later,XT286IBM PC XT/286,ATIBM PC AT,PSIBM PS/2, any model) (INT 13, FLOPPY DISK, AH=16h/SI=0000h) DETECT MODE (INT 2F, DOS Protected-Mode InterfaceAn API which provides basic services for protected-mode programs to allocate memory, invoke real-mode software, etc. See also Virtual Control Program Interface., AX=1686h) DETECT ROMs (INT 2F, MS Windows 3.1, AX=160Ch) DETERMINE ADAPTER SUPPORT (INT 10, SOLLEX SuperVGA, ADAPTER CONTROL, AX=7F01h/BL=02h) DETERMINE ATTACHED KEYBOARD TYPE (INT 16, Compaq 386 and newer, AH=F2h) DETERMINE CCM VALIDITY (INT 61, Atari Portfolio, AH=0Bh) DETERMINE CHAINED INTERRUPTS (INT 2D, AMISAlternate Multiplex Interrupt Specification v3.0+, AL=04h/BL=2Dh) DETERMINE CPU(Central Processing Unit) The microprocessor which executes programs on your computer. SPEED FOR DELAY LOOPS (INT 15, Phoenix 386 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=BCh) DETERMINE DISK FORMAT (CALL 0060h:001Bh, Eagle MS-DOS v1.25 IO.SYS) DETERMINE DOS TYPE {obsolete} (INT 21, DR DOS 5.0-6.0, AX=4412h) DETERMINE DOS TYPE/GET DR DOS VERSION (INT 21, DR DOS 3.41+, AX=4452h) DETERMINE IF CHARACTER REPRESENTS YES/NO RESPONSE {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+, AX=6523h) DETERMINE IF MEMORY AVAIL WITHOUT GARBAGE COLLECTION (INT 88, 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, AL=FCh) DETERMINE NAME STATUS (INT 88, 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, AL=F9h) DETERMINE NAME STATUS (INT 88, 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, AL=FFh) DETERMINE R= SPACE (INT 95, 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) DETERMINE STATE FOR AREA CODE (INT B3, ZIPKEY v2.0+, AH=80h) Device addresses 0xxh (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. F8h, 10-bit addressing) Device addresses 1xxh (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, 10-bit addressing) Device addresses 2xxh (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, 10-bit addressing) Device addresses 3xxh (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. FEh, 10-bit addressing) DEVICE BUSY (ATIBM PC AT,PSIBM PS/2, any model) (INT 15, OS HOOK, AH=90h) DEVICE CLOSE {callout or callback} (INT 15, OS HOOK, AH=81h) DEVICE OPEN (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {callout or callback} (INT 15, OS HOOK, AH=80h) DEVICE POSTsee Power-On Self-Test (ATIBM PC AT,PSIBM PS/2, any model) (INT 15, OS HOOK, AH=91h) DEVICE STATUS (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/00h, Brooktree Bt819A) DIAGNOSTIC STATUS BYTE (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 0Eh, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PS/2IBM PS/2, any model) DIAL NUMBER (INT 61, Atari Portfolio, AH=17h) DIAL NUMBER AND UPLOAD FILE WITH ZMODEM (INT 2F, ZyXEL ZFAX v3+, SEND DATA, AX=DB41h) DIAL PHONE (INT 2F, ZyXEL ZFAX v3+, AX=DB26h) Diamond Viper V330 - ??? (INT 10, AX=4F0Bh) DIET v1.10+ (Overlay Mode) - EXPAND PROGRAM??? (INT 21, AX=4BF1h) Digiboard DigiCHANNEL PCIBM PC/X* Extender INT 14 (XAPCM232.SYS) (INT 14, SERIAL) Digidesign 'Session 8' HARD-DISK RECORDING SYSTEM (PORTIBM PC Portable (uses same BIOS as XT) 0200) Digidesign 'Session 8' HARD-DISK RECORDING SYSTEM (PORTIBM PC Portable (uses same BIOS as XT) 0300) Digital RGB(Red-Green-Blue) The color specification mechanism normally used in computer displays, where colors are separated into their primary-color components. See also YUV. Insertion Contrast (Blue) (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/44h, ITT VDP 3108) Digital RGB(Red-Green-Blue) The color specification mechanism normally used in computer displays, where colors are separated into their primary-color components. See also YUV. Insertion Contrast (Green) (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/48h, ITT VDP 3108) Digital RGB(Red-Green-Blue) The color specification mechanism normally used in computer displays, where colors are separated into their primary-color components. See also YUV. Insertion Contrast (Red) (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/4Ch, ITT VDP 3108) Digital Transient Improvement (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/72h, ITT VDP 3108) Digital Transient Improvement (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/7Ah, ITT VDP 3108) DIM SCREEN 'MANUALLY' (INT 14, DimVGA v2.0+, AX=AA08h) DIRECT CHARACTER INPUT, WITHOUT ECHO (INT 21, DOS 1+, AH=07h) DIRECT CONSOLE INPUT (INT 21, DOS 1+, AH=06h/DL=FFh) DIRECT CONSOLE OUTPUT (INT 21, DOS 1+, AH=06h/DL=FFh) DIRECT DISK READ {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, PTS-DOS 6.51 & S/DOS 1.0, AH=90h/CX=FFFFh) DIRECT DISK WRITE {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, PTS-DOS 6.51 & S/DOS 1.0, AH=91h/CX=FFFFh) DIRECT LINE DRAW REGISTER (PORTIBM PC Portable (uses same BIOS as XT) FEEE-FEEF, ATI Mach8/Mach32) DIRECT MEMORY TRANSFER (INT 7F, Alloy NTNX, MW386, AH=16h) DIRECTORY BUFFER INFO {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=1009h) DISABLE (INT 14, DimVGA v2.0+, AX=AA06h) DISABLE (INT 2F, ZyXEL ZFAX v.1x, AX=DA02h) DISABLE (INT 2F, ZyXEL ZFAX v2.x, AX=DB02h) DISABLE A20(Address line 20) The 80286 and higher CPUs allow addresses in real mode to extend slightly beyond the one megabyte mark, which causes an incompatibility with some older programs which expect such addresses to wrap back to the beginning of the address space. For complete compatibility with the 8088, newer machines thus contain circuitry which permits the twenty-first address line (A20) to be disabled. The CPU then effectively has only twenty address lines in real mode, just as the 8088 does, and addresses which would extend beyond the one megabyte mark wrap to the beginning of the address space. See also High Memory Area, Real Mode. GATE (INT 15, SYSTEM, later PSIBM PS/2, any model/2s, AX=2400h) DISABLE AAKEYS (INT 16, AAKEYS, AX=0602h) DISABLE ACCOUNT (INT 21, LANtastic, AX=5F86h) DISABLE AUDITING ON VOLUME (INT 21, Novell NetWare, AX=F258h) DISABLE BROADCAST MESSAGES (INT 21, Novell NetWare, MESSAGE SERVICES, AH=E1h) DISABLE BROADCASTS (INT 21, Novell NetWare, AX=F215h/DX=0000h) DISABLE CACHE CONTROLLER (INT 16, Compaq Systempro and higher, AX=F402h) DISABLE CACHE {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 13, Super PC-Kwik v5.10+, AH=A3h/SI=4358h) DISABLE CACHE {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, CDBLITZ v2.11, AX=1500h/CH=93h/BX=1234h) DISABLE CACHING FOR SPECIFIC 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 13, QUICKCACHE II v4.20, AH=33h) DISABLE CRITICAL REGION FLAG {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, DOS 3.0+ PRINT.COM, AX=2000h) DISABLE DISPLAY UPDATE (INT 2F, Frank Kintrup 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. Utilities, CLOCK, AX=C001h) DISABLE DMAsee Direct Memory Access TRANSLATION (INT 4B, Virtual DMA SpecificationA set of interrupt calls which permit the use of DMA even on systems running in protected or Virtual-86 mode with their address remapping, or systems such as Micro Channel PSIBM PS/2, any model/2s with multiple bus masters independently performing DMA operations., AX=810Bh/DX=0000h) DISABLE DRIVE (INT 21, DOS 5+, AX=5F08h) DISABLE DRIVER {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, NewSpace, AX=4411h/BX=FFFFh) DISABLE EMULATOR (INT 21, Q87, Q387, AX=4321h/BX=0002h) DISABLE EPP (INT 17, EPP 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=E1h) DISABLE EXPLOSIV (INT 2F, Explosiv v2.x, AX=C059h) DISABLE EXTENSIONS (INT 10, VIDEO, UltraVision, AX=CC01h) DISABLE FDAK DRIVERS (INT 2F, FreeDOS, FDAK-DDT, AX=12FFh/BL=02h) DISABLE FILE SERVER LOGIN (INT 21, Novell NetWare, AX=F217h/DX=0000h) DISABLE FILE SERVER LOGIN (INT 21, Novell NetWare, FILE SERVER, AH=E3h) DISABLE FUNCTIONS (INT 2F, LAN HiJack, LHR, AX=7AC9h) DISABLE HOST BUFFER UPDATES (INT 21, Attachmate Extra!, AH=B8h/DL=01h) DISABLE KEYBOARD SERVICE (INT 2F, TopWare Network OS v5.10+, TopTerm, AX=FF12h) DISABLE MACROS {partially documented} (INT 60, HP 95LX System Manager, DI=0F0Ah) DISABLE MEMORY CACHING (INT 16, HP Vectras RS/20C and RS/25C, AX=6F10h) DISABLE MOUSE (INT 33, Mouse Systems MOUSE DRIVER v7.01+, AX=0053h) DISABLE MOUSE DRIVER (INT 33, MS MOUSE v6.0+, AX=001Fh) DISABLE MULTICAST (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=000Ah) DISABLE MULTITASKING (INT 15, MultiDOS Plus, AH=0Dh) Disable NPX Interrupt (OPCODE FNDISI) DISABLE POPUP (INT 2D, CDTSR, AL=12h) DISABLE PORTIBM PC Portable (uses same BIOS as XT) (INT 14, PC-MOS/386 v5.01 $serial.sys v5.04, AH=11h) DISABLE PROGRAM {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=C303h) DISABLE PROTOCOL (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=0008h) DISABLE QMR (INT 2F, QMR, AX=C002h) DISABLE RM386 (INT 67, RM386, AX=5DE0h) DISABLE SMOOTH MOUSE (INT 33, Smooth Mouse Driver, PrecisePoint, AX=3002h) DISABLE THE SOFTWARE (INT 11, Blank-It Screen Blanker, AX=0225h/BX=6903h) DISABLE TRANSACTION TRACKING (INT 21, Novell NetWare, AX=F217h/DX=0000h) DISABLE TRANSACTION TRACKING (INT 21, Novell NetWare, FILE SERVER, AH=E3h) DISABLE 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. (INT 2D, FREEVER, AL=15h) DISABLE 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. (INT 2F, SETDRVER.COM v2.10+, AX=E005h) DISABLE WINDOWS COMPATIBILITY MODE (INT 11, Blank-It Screen Blanker, AX=0225h/BX=6906h) DISABLE {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+ TSRs, AX=FE02h/DI=4E55h) DISCARD PAGE CONTENTS {protected mode} (INT 31, DPMIsee DOS Protected-Mode Interface 0.9+, AX=0703h) DISCARD PAGES {protected mode, partially documented} (INT 31, DPMIsee DOS Protected-Mode Interface 0.9+, AX=0701h) DISCONNECT (INT 15, Intel System Management Bus, AX=53B0h/BH=05h/CX=6941h) DISCONNECT A VIRTUAL CIRCUIT (INT 6B, NPC NCSI EXTENDED SERIAL I/O, AH=17h) DISCONNECT AND RESET LINE (INT 10, CARBON COPY PLUS v5.0, AX=FF01h) DISCONNECT FROM PORTIBM PC Portable (uses same BIOS as XT) (INT 14, 3com BAPI SERIAL I/O, AH=A1h) DISCONNECT FROM TARGET (INT 7A, Novell NetWare, IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. Driver, BX=000Bh) DISCONNECT INTERFACE (INT 15, Advanced Power Management v1.0+, AX=5304h) DISK - ??? (Western Digital "Super BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly.") (INT 13, AH=20h) DISK CONTROLLER STATUS REGISTER 0 (MEM 0040h:0042h) DISK CONTROLLER STATUS REGISTER 1 (MEM 0040h:0043h) DISK CONTROLLER STATUS REGISTER 2 (MEM 0040h:0044h) DISK RESET (INT 21, DOS 1+, AH=0Dh) Disk Spool II v4.05 - ??? {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 1A, AH=EEh) Disk Spool II v4.0x - 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. EXISTING 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 1A, AX=E402h) DISKETTE CONTROLLER INFORMATION [not XTIBM PC XT] {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.} (MEM 0040h:008Fh) DISKETTE CONTROLLER {callout or callback} (INT 0E, IRQ6) DISKETTE DRIVE 0 CURRENT TRACK NUMBER (MEM 0040h:0094h) DISKETTE DRIVE 0 MEDIA STATE (MEM 0040h:0090h) DISKETTE DRIVE 0 MEDIA STATE ATIBM PC AT START OF OPERATION {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.} (MEM 0040h:0092h) DISKETTE DRIVE 1 CURRENT TRACK NUMBER (MEM 0040h:0095h) DISKETTE DRIVE 1 MEDIA STATE (MEM 0040h:0091h) DISKETTE DRIVE 1 MEDIA STATE ATIBM PC AT START OF OPERATION {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.} (MEM 0040h:0093h) DISKETTE MEDIA CONTROL (MEM 0040h:008Bh) DISKETTE PARAMETERS (INT 1E, SYSTEM DATA) DISKLESS BOOT HOOK (START CASSETTE BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN. There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular. All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM.) (INT 18) DISMOUNT {partially documented} (INT 13, QUICKCACHE II v4.20, AH=20h/AL=7Fh) Display 2 (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/2Bh, ITT VDP 3108, Test Register) Display 3 (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/2Ch, ITT VDP 3108, Test Register) DISPLAY (INT 68, APPC/PCIBM PC, NETWORK DEVICE CONTROL, AH=01h) DISPLAY ASCIZA NUL-terminated ASCII string. The ASCIZ string "ABC" consists of the four bytes 41h, 42h, 43h, and 00h. Unless otherwise specified, maximum lengths given in the interrupt list do not include the terminating NUL. STRING CENTERED IN WINDOW {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=FFCCh) DISPLAY COUNTED STRING {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=FFEAh) DISPLAY CTRL (PORTIBM PC Portable (uses same BIOS as XT) 22E8-22EF, 8514/A and compatible (e.g. ATI Graphics Ultra)) DISPLAY FORMAT DISK PROMPT {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 4.0+ SELECT, AX=ADC1h) DISPLAY HELP LINE {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=FFF2h) DISPLAY HELP {partially documented} (INT 60, HP 95LX System Manager, DI=1301h) DISPLAY NUMBER {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=FFE8h) DISPLAY OR REDISPLAY EDIT FIELD {partially documented} (INT 60, HP 95LX System Manager, DI=0402h) DISPLAY OR REDISPLAY MENU {partially documented} (INT 60, HP 95LX System Manager, DI=0201h) DISPLAY POPUP MENU {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=FFDEh) DISPLAY POSITION (INT 10, VIDEO, FLAT-PANEL, AX=1E02h) DISPLAY PRINT OPTIONS MENU {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=FFD1h) Display Processor 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. 8Ah/3Bh, ITT VDP 3108, Test Register) DISPLAY STRING (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=08h) DISPLAY STRING IN Soft-ICE WINDOW (INT 03, Soft-ICE, BACK DOOR COMMANDS, AX=0910h/SI=4647h/DI=4A4Dh) DISPLAY STRING {partially documented} (INT 60, HP 95LX System Manager, DI=0300h) DISPLAY SYSTEM ERROR MESSAGE (INT 48, TI Professional PCIBM PC, AH=08h) DISPLAY THREE-LINE MESSAGE BOX {partially documented} (INT 60, HP 95LX System Manager, DI=0F09h) DISPLAY TWO-LINE MESSAGE BOX {partially documented} (INT 60, HP 95LX System Manager, DI=0F03h) DISPLAY-SWITCH INTERFACE (INT 10, VIDEO, ALTERNATE FUNCTION SELECT (PSIBM PS/2, any model), AH=12h/BL=35h) DISPLAY/REDISPLAY FILE SELECTION MENU {partially documented} (INT 60, HP 95LX System Manager, DI=0206h) Diverse Settings (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/EAh, ITT VPX 32xx) DIVIDE ERROR {callout or callback} (INT 00, CPU-generated) DLLsee Dynamic Link Library LOADED {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=0064h) DMAsee Direct Memory Access CONTROLLER (8237) ON PS/2IBM PS/2, any model MODEL 60 & 80 (PORTIBM PC Portable (uses same BIOS as XT) 0010-001F) DMAsee Direct Memory Access PAGE REGISTERS (74612) (PORTIBM PC Portable (uses same BIOS as XT) 0080-008F) DMAsee Direct Memory Access REGISTERS (INT 67, LIM EMSsee Expanded Memory Specification 4.0, ALTERNATE MAP REGISTER SET, AH=5Bh) DMSSTL.DRV - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated., callout or callback} (INT 2F, Diamond Stealth64 Video, AX=4027h) DO COMMAND (INT 2F, Jim Harper's CD-ROM redirector 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. driver, AX=7F01h) DO LINE (INT 50, PCIBM PC Thuis Organizer Shell, AX=0007h/DL=FFh) DO MENU (INT 50, PCIBM PC Thuis Organizer Shell, AX=0008h) DO REDIRECTION {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=111Eh) DO REQUEST (INT 50, PCIBM PC Thuis Organizer Shell, AX=000Ch) DO RESET (INT 2F, Jim Harper's CD-ROM redirector 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. driver, AX=7F02h) DOMAINS {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, EMM386.EXE, MULTITASKING 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=2780h/CL=04h) DON'T ALLOW TASK TO BE SWAPPED OUT (INT 62, Cswitch, AH=0Dh) DOOR LATCH/DOOR BUTTON DETECT (INT 13, SyQuest, AH=1Fh) DOS 1.x IO.SYS LOAD ADDRESS (MEM 0060h:0000h) DOS 2+ - "CHDIR" - SET CURRENT DIRECTORY (INT 21, AH=3Bh) DOS 2+ - "CHMOD" - SET FILE ATTRIBUTES (INT 21, AX=4301h) DOS 2+ - "CLOSE" - CLOSE FILE (INT 21, AH=3Eh) DOS 2+ - "CREAT" - CREATE OR TRUNCATE FILE (INT 21, AH=3Ch) DOS 2+ - "CWD" - GET CURRENT DIRECTORY (INT 21, AH=47h) DOS 2+ - "DUP" - DUPLICATE FILE HANDLE (INT 21, AH=45h) DOS 2+ - "DUP2", "FORCEDUP" - FORCE DUPLICATE FILE HANDLE (INT 21, AH=46h) DOS 2+ - "EXEC" - LOAD AND/OR EXECUTE PROGRAM (INT 21, AH=4Bh/CX=04h) DOS 2+ - "EXIT" - TERMINATE WITH RETURN CODE (INT 21, AH=4Ch) DOS 2+ - "FINDFIRST" - FIND FIRST MATCHING FILE (INT 21, AH=4Eh) DOS 2+ - "FINDNEXT" - FIND NEXT MATCHING FILE (INT 21, AH=4Fh) DOS 2+ - "LSEEK" - SET CURRENT FILE POSITION (INT 21, AH=42h) DOS 2+ - "MKDIR" - CREATE SUBDIRECTORY (INT 21, AH=39h) DOS 2+ - "OPEN" - OPEN EXISTING FILE (INT 21, AH=3Dh) DOS 2+ - "READ" - READ FROM FILE OR DEVICE (INT 21, AH=3Fh) DOS 2+ - "RENAME" - RENAME FILE (INT 21, AH=56h) DOS 2+ - "RMDIR" - REMOVE SUBDIRECTORY (INT 21, AH=3Ah) DOS 2+ - "SWITCHAR" - GET SWITCH CHARACTER (INT 21, AX=3700h) DOS 2+ - "SWITCHAR" - SET SWITCH CHARACTER (INT 21, AX=3701h) DOS 2+ - "UNLINK" - DELETE FILE (INT 21, AH=41h) DOS 2+ - "WRITE" - WRITE TO FILE OR DEVICE (INT 21, AH=40h) DOS 2+ internal - "SYSVARS" - GET LIST OF LISTS {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, AH=52h) DOS 2+ IO.SYS LOAD ADDRESS (MEM 0070h:0000h) DOS 2+ SCRATCH SPACE (MEM 0060h:0000h) DOS 2.x and 3.3+ only - "AVAILDEV" - SPECIFY \DEV\ PREFIX USE (INT 21, AH=37h) DOS 3.0+ - "FLOCK" - RECORD LOCKING (INT 21, AH=5Ch) DOS 3.0+ - "TRUENAME" - CANONICALIZE FILENAME OR PATH (INT 21, AH=60h) DOS 3.0+ internal - SET 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, AX=1219h) DOS 3.2 Realtime Clock update (INT 6C) DOS 3.3+ - "FFLUSH" - COMMIT FILE (INT 21, AH=68h) DOS 4 only SHARE 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, AX=1040h) DOS 4.0+ - ??? (INT 2F, AX=AD40h) DOS 4.x DISPLAY.SYS internal - 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.} (INT 2F, AX=AD10h) DOS 4.x only DISPLAY.SYS 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, AX=AD04h) DOS 5+ - DOS SUPERVISOR "REBOOT PANEL" - ADJUST MEMORY SIZE {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, AX=4A06h) DOS 5+ DISPLAY.SYS 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, AX=AD10h) DOS 5+ DOSSHELL - TASK SWITCHING 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.??? {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=4A05h) DOS 5.0+ SETUP {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=49h) DOS APPLICATION SWITCH HOOK {callout or callback} (INT 6F, MS Windows 3.0, AX=0204h) DOS CRITICAL SECTION DISABLE {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, Novell NetWare Lite, SERVER, AX=D800h) DOS CRITICAL SECTION ENABLE {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, Novell NetWare Lite, SERVER, AX=D801h) DOS Device Drivers (CALL xxxxh:xxxxh) DOS Enhanced LAN Manager 2.0+ MINIPOP/NETPOPUP - ??? (INT 2F, AX=4103h) DOS Enhanced LAN Manager 2.0+ MINIPOP/NETPOPUP - ??? (INT 2F, AX=4104h) DOS EXTENDER INSTALLATION CHECK (INT 2F, AX=F100h) DOS EXTENSIONS (INT 21, DJ GO32.EXE 80386+ DOS extender, AH=FFh) DOS IDLE INTERRUPT {callout or callback} (INT 28, DOS 2+) DOS Navigator II v1.49 - 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=9905h) DOS Navigator II v1.49 - 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=9906h) DOS Navigator II v1.49 - SET ??? {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=9904h) DOS Protected-Mode ServicesAn API designed by Novell (and first released with Novell DOS 7) which allows TSRs to store most of themselves outside of the first megabyte of memory. (CALL xxxxh:xxxxh) DOS Requester (CALL xxxxh:xxxxh, Novell NetWare) DOS Requester v1.03+ - GET ??? ENTRY POINT (INT 2F, Novell NetWare, AX=7A20h/BX=0006h) DOS Requester v1.03+ - GET ??? ENTRY POINT (INT 2F, Novell NetWare, AX=7A20h/BX=0007h) DOS Requester v1.03+ - GET ??? ENTRY POINT (INT 2F, Novell NetWare, AX=7A20h/BX=0008h) DOS Requester v1.03+ - GET ??? ENTRY POINT (INT 2F, Novell NetWare, AX=7A20h/BX=0080h) DOS Requester v1.03+ - GET ??? ENTRY POINT (INT 2F, Novell NetWare, AX=7A20h/BX=0081h) DOS Requester v1.03+ - GET ??? ENTRY POINT (INT 2F, Novell NetWare, AX=7A20h/BX=0082h) DOS TASK DELAY (INT 7F, Alloy MW386, AH=E8h) DOS Task Switcher (CALL xxxxh:xxxxh) DOS TIME TO FILE TIME (INT 21, Windows95, LONG FILENAME, AX=71A7h/BL=01h) DosCallNmPipe {partially documented} (INT 21, Named Pipes, AX=5F37h) DosDeleteMailslot {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F4Eh) DOSISODE to WATTCP 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 - "accept" (INT 17, AX=0700h) DOSISODE to WATTCP 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 - "bind" (INT 17, AX=0400h) DOSISODE to WATTCP 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 - "close" (INT 17, AX=0C00h) DOSISODE to WATTCP 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 - "connect" (INT 17, AX=0500h) DOSISODE to WATTCP 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 - "ioctl" (INT 17, AX=0B00h) DOSISODE to WATTCP 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 - "listen" (INT 17, AX=0600h) DOSISODE to WATTCP 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 - "recvfrom" (INT 17, AX=0800h) DOSISODE to WATTCP 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 - "select" (INT 17, AX=0A00h) DOSISODE to WATTCP 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 - "sendto" (INT 17, AX=0900h) DOSISODE to WATTCP 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 - "shutdown" - SHUTDOWN INTERFACE (INT 17, AX=0D00h) DOSISODE to WATTCP 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 - "socket" (INT 17, AX=0300h) DosMailslotInfo {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F4Fh) DosMakeMailslot {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F4Dh) DOSMGR Device (CALL xxxxh:xxxxh, MS Windows) DosPeekMailslot {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F51h) DosQFileInfo (INT 21, OS/2 v1.1+ Family 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=5702h) DosQPathInfo (INT 21, OS/2 v1.1+ Compatibility Box Family 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=5702h/BX=FFFFh) DosReadAsynchNmPipe (INT 2F, LAN Manager Enhanced DOS, AX=1186h) DosReadAsynchNmPipe2 (INT 2F, LAN Manager Enhanced DOS, AX=1190h) DosReadMailslot {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F50h) DosSetFileInfo (INT 21, OS/2 v1.1+ Family 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=5703h) DosSetPathInfo (INT 21, OS/2 v1.1+ Family 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=5703h/BX=FFFFh) DosWriteAsynchNmPipe (INT 2F, LAN Manager Enhanced DOS, AX=118Fh) DosWriteAsynchNmPipe2 (INT 2F, LAN Manager Enhanced DOS, AX=1191h) DosWriteMailslot {partially documented} (INT 21, LAN Manager Enhanced DOS, AX=5F52h) DOUBLE EXCEPTION DETECTED {callout or callback} (INT 08, CPU-generated (80286+)) DOUBLE-BYTE CHARACTER SET SHIFT CONTROL (INT 16, DOS/V, AH=13h) DOUBLE-BYTE CHARACTER SET SHIFT INFORMATION (INT 10, Japanese VIDEO, AH=19h) DOUBLE-SHIFT-HOTKEY SOUND FEATURE {partially documented} (INT 94, Media Vision PCM.COM, AL=02h/SI=8017h) DoubleDOS - ??? (INT F5) DoubleDOS - ??? (INT F6) DoubleDOS - ??? (INT F7) DoubleDOS - ??? (INT F8) DoubleDOS - ??? (INT F9) DoubleDOS - ??? (INT FD) DoubleTools v1.0 - 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 21, AX=4404h/CX=0006h) DOWN DRIVER (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=0001h) DOWN FILE SERVER (INT 21, Novell NetWare, AX=F217h/DX=0000h) DOWN FILE SERVER (INT 21, Novell NetWare, FILE SERVER, AH=E3h) DOZE MODE (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 5Dh, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. (PicoPower)) DOZE MODE TIMEOUT (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 66h, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. 1990 Hyundai super-NB368S notebook) DPMIsee DOS Protected-Mode Interface SERVICES {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, EMM386.EXE, MULTITASKING 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=2780h/CL=06h) DPMSsee DOS Protected-Mode Services EXIT BROADCAST {callout or callback} (INT 2F, DOS Protected ModeOne of the operating modes of the 80286 and higher Intel processors, in which addresses used by programs no longer correspond to physical addresses and the CPU enforces various protection mechanisms designed to prevent one program from disrupting other programs or the operating system. See also Real Mode, Virtual-86 Mode. Services (DPMSsee DOS Protected-Mode Services) v1.0, AX=43E4h/BX=0000h/CX=4450h/DX=4D53h) DPMSsee DOS Protected-Mode Services STARTUP BROADCAST {callout or callback} (INT 2F, DOS Protected ModeOne of the operating modes of the 80286 and higher Intel processors, in which addresses used by programs no longer correspond to physical addresses and the CPU enforces various protection mechanisms designed to prevent one program from disrupting other programs or the operating system. See also Real Mode, Virtual-86 Mode. Services (DPMSsee DOS Protected-Mode Services) v1.0, AX=43E3h/BX=0000h/CX=4450h/DX=4D53h) DR DOS 5.0 - FIXUP SHARE STUB 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 2F, AX=10FFh) DR Multiuser DOS - "A_ATTACH" - ATTACH AUX DEVICE (INT E0, CL=A5h) DR Multiuser DOS - "A_BREAK" - SEND BREAK TO AUX DEVICE (INT E0, CL=B2h) DR Multiuser DOS - "A_CATTACH" - CONDITIONALLY ATTACH TO AUX DEVICE (INT E0, CL=A7h) DR Multiuser DOS - "A_CONFIG" - GET/SET AUX DEVICE PARAMETERS (INT E0, CL=B0h) DR Multiuser DOS - "A_CONTROL" - GET/SET AUX CONTROL PARAMETERS (INT E0, CL=B1h) DR Multiuser DOS - "A_DETACH" - DETACH FROM AUX DEVICE (INT E0, CL=A6h) DR Multiuser DOS - "A_GET" - GET DEFAULT AUX DEVICE NUMBER (INT E0, CL=A9h) DR Multiuser DOS - "A_READ" - READ CHARACTER FROM DEFAULT AUX DEVICE (INT E0, CL=03h) DR Multiuser DOS - "A_READBLK" - READ STRING FROM AUX DEVICE (INT E0, CL=ACh) DR Multiuser DOS - "A_SET" - SET DEFAULT AUX DEVICE NUMBER (INT E0, CL=A8h) DR Multiuser DOS - "A_STATIN" - GET INPUT STATUS OF AUX DEVICE (INT E0, CL=07h) DR Multiuser DOS - "A_STATOUT" - GET OUTPUT STATUS OF AUX DEVICE (INT E0, CL=08h) DR Multiuser DOS - "A_WRITE" - WRITE CHARACTER TO DEFAULT AUX DEVICE (INT E0, CL=04h) DR Multiuser DOS - "A_WRITEBLK" - WRITE STRING TO AUX DEVICE (INT E0, CL=ADh) DR Multiuser DOS - "P_DELAY" - DELAY EXECUTION (INT E0, CL=BDh) DR-DOS 7.02-7.03 - "DEVNO" AUX/PRN PORTIBM PC Portable (uses same BIOS as XT) ASSIGNMENTS (MEM 0070h:016Ch) DRAW ELLIPSE/CIRCLE (INT 10, HUNTER 16, AH=70h) DRAW EMPTY WINDOW {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=FFF8h) DRAW FILLED RECTANGLE (INT 10, CU Writer v1.4, AH=B5h) DRAW LINE (INT 5F, HP 95LX/100LX/200LX GRAPHICS PRIMITIVES, AH=06h) DRAW LINE TO (INT 10, CU Writer v1.4, AH=B2h) DRAW LINE/BOX (INT 10, HUNTER 16, AH=71h) DRAW RECTANGLE (INT 10, CU Writer v1.4, AH=B4h) DRAW RECTANGLE (INT 5F, HP 95LX/100LX/200LX GRAPHICS PRIMITIVES, AH=05h) DRAW STANDARD TITLE BOX {partially documented} (INT 60, HP 95LX System Manager, DI=0F01h) DRAWING COMMAND 2 (PORTIBM PC Portable (uses same BIOS as XT) 9AEA-9AEB, S3 Trio64) DRIVE 0 DATA (INT 60, Adaptec and OMTI controllers) DRIVE 0 DATA (INT 61, Adaptec and OMTI controllers) DRIVE 0 DATA (INT 62, Adaptec and OMTI controllers) DRIVE 0 DATA (INT 63, Adaptec and OMTI controllers) DRIVE 0 DATA (INT C0, 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.) DRIVE 0 DATA (INT C1, 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.) DRIVE 0 DATA (INT C2, 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.) DRIVE 0 DATA (INT C3, 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.) DRIVE 0 DISKETTE MEDIA STATE (MEM 0040h:00D7h, EHD floppy) DRIVE 0 DISKETTE TYPE (from jumpers) (MEM 0040h:00E3h, EHD floppy) DRIVE 0 NEEDS RECALIBARATION (MEM 0040h:00DBh, EHD floppy) DRIVE 1 DATA (INT 64, Adaptec controllers) DRIVE 1 DATA (INT 65, Adaptec controllers) DRIVE 1 DATA (INT 66, Adaptec controllers) DRIVE 1 DATA (INT 67, Adaptec controllers) DRIVE 1 DATA (INT C4, 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.) DRIVE 1 DATA (INT C5, 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.) DRIVE 1 DATA (INT C6, 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.) DRIVE 1 DATA (INT C7, 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.) DRIVE 1 DISKETTE MEDIA STATE (MEM 0040h:00D8h, EHD floppy) DRIVE 1 DISKETTE TYPE (from jumpers) (MEM 0040h:00E4h, EHD floppy) DRIVE 1 NEEDS RECALIBARATION (MEM 0040h:00DCh, EHD floppy) DRIVE 2 DISKETTE MEDIA STATE (MEM 0040h:00D9h, EHD floppy) DRIVE 2 DISKETTE TYPE (from jumpers) (MEM 0040h:00E5h, EHD floppy) DRIVE 2 NEEDS RECALIBARATION (MEM 0040h:00DDh, EHD floppy) DRIVE 3 DISKETTE MEDIA STATE (MEM 0040h:00DAh, EHD floppy) DRIVE 3 DISKETTE TYPE (from jumpers) (MEM 0040h:00E6h, EHD floppy) DRIVE 3 NEEDS RECALIBARATION (MEM 0040h:00DEh, EHD floppy) DRIVE ACCESS SOUNDS {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 13, QUICKCACHE II v4.20, AH=2Bh) DRIVE CHECK (INT 2F, CD-ROM v2.00+, AX=150Bh) DRIVE DATA (NOT A VECTOR!) (INT 48, Western Digital WD1002-27X SuperBIOS) DRIVE DIAGNOSTIC (XTIBM PC XT,PSIBM PS/2, any model) (INT 13, HARD DISK, AH=13h) DRIVE LOCKING AND FLUSHING (INT 21, MS-DOS 7, AH=73h) DRIVE PARAMETER TABLE FOR FIRST HARD DISK (MEM 0040h:00E0h, Phoenix 386 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.) DRIVER 'ID' FUNCTION (INT 14, PC-MOS/386 v5.01 $serial.sys v5.04, AH=06h) Driver 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, DESQview XDIsee External Device Interface) DRIVER CHAIN/UNCHAIN (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=0006h) DRIVER CONTROL (INT 21, SFS v1.00, AX=4405h) DRIVER CUSTOM SUBFUNCTION (INT 2F, DESQview v2.26+ External Device InterfaceA series of calls made by the DESQview multitasker on various "interesting" events, which may be intercepted by programs which wish to keep track of the current system state. See also Callout., AX=DE01h) DRIVER I/O CONTROL (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=0016h) DRIVER VERSION (INT 15, Advanced Power Management v1.1+, AX=530Eh) DRIVER.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.} (INT 7B, MCI Express v2.11+) DROP A SESSION (INT 14, Interconnections Inc. TES, AH=A6h) DROP DTR AND RTS (INT 14, MBBIOS, AH=05h) DROP PACKET FROM QUEUE (INT 60, FTP(File Transfer Protocol) The standard protocol for copying files from one machine to another on a TCP/IP (Internet) network. Also the program of the same name with which a user may transfer files. Packet DriverAny one of the numerous drivers conforming to FTP Software's Packet Driver Specification, which provides a hardware-independent network interface. See also NDIS, ODI. 1.10+, HIGH-PERF FUNC, AH=0Dh) DUMP CAPTURE BUFFER (INT 2F, PRINDIR v9.0, AX=7F05h) DUMP FUNCTIONS (INT F7, FSBBS 2.0, AH=07h) DUMP STRING TO TERMINAL (INT 7F, Alloy ANSK, NTNX (Slave), AH=37h) DUMP TEXT SCREEN TO FILE (INT 16, TEXTCAP 2.0, AX=4254h) DUPLICATE EXTENDED ATTRIBUTES (INT 21, Novell NetWare, AX=F256h) DV INITIALIZATION COMPLETE {callout or callback} (INT 2F, DESQview v2.26+ External Dev Interface, AX=DE02h) DV TERMINATION {callout or callback} (INT 2F, DESQview v2.26+ External Dev Interface, AX=DE03h) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0004h) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0005h) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0008h) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=000Ch) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=000Dh) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=000Eh) DVDOS4GX.DVR - ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=000Fh) DVDOS4GX.DVR - ??? {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 RPCI, AX=D201h/BX=4D45h/CX=5155h/DX=5044h) DVDOS4GX.DVR - CHECK IF ??? MAILBOX OWNED (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0016h) DVDOS4GX.DVR - DECREMENT ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=000Ah) DVDOS4GX.DVR - GET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0003h) DVDOS4GX.DVR - GET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0006h) DVDOS4GX.DVR - GET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0011h) DVDOS4GX.DVR - GET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0012h) DVDOS4GX.DVR - GET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0013h) DVDOS4GX.DVR - GET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=FFFDh) DVDOS4GX.DVR - GET ??? MAILBOX OWNER (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0017h) DVDOS4GX.DVR - INCREMENT ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=000Bh) DVDOS4GX.DVR - LOCK ??? MAILBOX (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0014h) DVDOS4GX.DVR - SET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0002h) DVDOS4GX.DVR - SET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0007h) DVDOS4GX.DVR - SET ??? (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=FFFEh) DVDOS4GX.DVR - UNLOCK ??? MAILBOX (INT 15, DESQview/X 1.02+, AX=BFDEh/BX=0015h) DVP PROCESSING COMPLETE {callout or callback} (INT 2F, DESQview v2.26+ External Dev Interface, AX=DE0Bh) DVP START FAILED {callout or callback} (INT 2F, DESQview v2.26+ External Dev Interface, AX=DE0Eh) DVXMS.DVR - ??? {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, DESQview v2.26+ XDIsee External Device Interface, AX=DE01h/BX=FFFEh/CX=4D47h/DX=0052h) DYNAMIC IDLE DETECTION (PORTIBM PC Portable (uses same BIOS as XT) EDC0-EDC1, DR DOS BATTERYMAX) DYNAMIC IDLE DETECTION CONTROL (INT 21, DR DOS $IDLE$, IOCTL, AX=4403h) EAST-WEST CORNER PARABOLA (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/06h, Philips TDA8366) EAST-WEST PARABOLA/WIDTH (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/05h, Philips TDA8366)