PERFORM FAST BOOTSTRAP {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, FBOOT v2.13, AX=4B18h/DX=0010h) PERFORM GARBAGE COLLECTION AND RETURN AVAILABLE MEMORY (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=FDh) PERFORM GRAY-SCALE SUMMING (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./MCGAMulti-Color Graphics Array(Multi-Color Graphics Array) The low-end color adapter offered in IBMInternational Busiuness Machines's early PS/2IBM PS/2, any model series machines.) (INT 10, VIDEO, AX=101Bh) PERFORM NETWORK OPERATION (INT 2F, PC-DOS Econet v1.05, AX=C502h) PERFORMANCE (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 49h, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. (Saturn)) PERIPHERAL OPTIONS (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 13h, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. WinBIOS) PERMANENTLY DISABLE (INT 1A, RighTime v1.1, AH=FFh) Phantom2 v2.8 - SET ??? FLAG (INT 2F, AX=E103h) Phar Lap 286|DOS ExtenderA program which allows a program to run in protected mode while still retaining access to real-mode MSDOS services. See also Protected Mode. Lite v2.5 - ??? (INT 2F, AX=ED80h/SI=5048h/DI=4152h) Phar Lap 386/DOS-Extender v4.1 (CALL xxxxh:xxxxh) Phar Lap RUN286 (CALL xxxxh:xxxxh, 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.) PharLap 286|DOS-Extender Lite v2.5 - ??? (INT 2F, AX=4040h) Pharlap DOS ExtenderA program which allows a program to run in protected mode while still retaining access to real-mode MSDOS services. See also Protected Mode. - ??? (INT 2F, AX=ED10h/BL=05h) Pharlap DOS ExtenderA program which allows a program to run in protected mode while still retaining access to real-mode MSDOS services. See also Protected Mode. - FATAL EXIT TO REAL MODE ??? (INT 2F, AX=ED11h/BL=05h) Philips CD-ROM player CM50 (PORTIBM PC Portable (uses same BIOS as XT) 0300-030F) Philips CD-ROM player CM50 (PORTIBM PC Portable (uses same BIOS as XT) 0310-031F) Philips CD-ROM player CM50 (PORTIBM PC Portable (uses same BIOS as XT) 0330-033F) Philips CD-ROM player CM50 (PORTIBM PC Portable (uses same BIOS as XT) 0340-034F) Philips SAA7110(A) ONE-CHIP FRONT-END (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. 9Eh) Philips SAA7111 (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. 4Ah) Philips TDA4885 (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) PHOENIX - ??? (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 2Dh) Phoenix - ??? (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 3Dh) Phoenix 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. 4.0 Rel 6.0 - ??? {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=5380h/BX=8000h/CX=0020h) Phoenix 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. 4.0 Rel 6.0 - ??? {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=5380h/BX=8001h/CX=0020h) PHOENIX CASCADE 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. 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. CONTROL ENTRY (CALL F000h:FF82h) PHYSICAL ADDRESS MAPPING {protected mode} (INT 21, FlashTek X-32VM, AX=350Ah) PHYSICAL ADDRESS MAPPING {protected mode} (INT 31, DPMIsee DOS Protected-Mode Interface 0.9+, AX=0800h) Physical Layer - ??? {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=02h) Picture Frame Color (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/11h, ITT VDP 31xxB) Picture Frame Generator Priority ID (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/47h, ITT VDP 31xxB) Picture Measurement Start (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/7Bh, ITT VDP 3108) Picture Measurement Stop (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/77h, ITT VDP 3108) Picture Measurement Stop Line (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/6Bh, ITT VDP 31xxB) PINK - ??? (INT 66, PenDOS, AH=21h) PINK - ??? (INT 66, PenDOS, AH=22h) PINK - ??? (INT 66, PenDOS, AH=23h) PINK - ??? (INT 66, PenDOS, AH=24h) PINK - ??? (INT 66, PenDOS, AH=25h/CL=00h) PINK - ??? (INT 66, PenDOS, AH=27h) PINK - ??? (INT 66, PenDOS, AH=28h) PINK - ??? (INT 66, PenDOS, AH=29h) PINK - ??? (INT 66, PenDOS, AH=2Ah) PINK - ??? (INT 66, PenDOS, AH=2Bh) PIXEL DATA TRANSFER (PORTIBM PC Portable (uses same BIOS as XT) E2E8-E2E9, 8514/A and compatible) PKEYUS - ??? (INT 66, PenDOS, AH=42h) PKEYUS - ??? (INT 66, PenDOS, AH=43h) PKEYUS - SET ??? (INT 66, PenDOS, AH=41h) PLACE KEYSTROKE EVENTS IN INPUT BUFFER (INT DD, STSC 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 v9.0) PLACE KEYSTROKES INTO KEYSTACK (INT 2F, 4DOS v4.0+, KSTACK.COM, AX=D44Fh/BX=0001h) PLACE KEYSTROKES INTO KEYSTACK (INT 2F, NDOS v4.0+, KSTACK.COM, AX=E44Fh/BX=0001h) PLAY .MOD FILE (INT 18, Gravis Ultra Sound EURO_MOD.EXE, AX=8002h) PLAY 8-BIT DIGITIZED SOUND (INT 66, IBMSND driver, DIGPAK, AX=0688h) PLAY BACK EXIT KEY FOR ENTRY WITH GIVEN ZIPCODE (INT B3, ZIPKEY, AH=77h) PLAY MODULE (INT 2F, MODRES, AX=8220h) PLAY MUSIC (INT 18, Gravis Ultra Sound YEA_GUS.EXE, AX=6905h) PLAY MUSIC (INT 80, SoundBlaster SBFM driver, BX=0006h) PLAY MUSIC STRING IN BACKGROUND (INT 1A, SND, AX=FF04h) PLAY PREFORMATTED DATA (INT 66, DIGPAK, AX=0694h) PLAY PREFORMATTED SOUND (INT 66, IBMSND driver, DIGPAK, AX=068Bh) PLAY SAMPLE (INT 2F, MODRES, AX=8223h) PLAY SEQUENCE (INT 66, MIDPAK, AX=0702h) PLAY TONES (INT 16, FAKEY.COM, AH=73h) PLAY VOICE FILE (INT 2F, ZyXEL ZFAX v3+, AX=DB24h) PLL2 Clamping and Blanking (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 31xxB) PLL2 integral coefficient (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 31xxB) PLL2 proportional coefficient (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/6Eh, ITT VDP 31xxB) PLL2/3 Filter Coefficient (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/57h, ITT VDP 3108) PLL2/3 Filter Coefficient (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/5Bh, ITT VDP 3108) PLL2/3 Filter Coefficient (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/5Fh, ITT VDP 3108) PLL3 proportional coefficient (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/6Ah, ITT VDP 31xxB) PLOT CHARACTER (INT 50, PCIBM PC Thuis Organizer Shell, AX=000Eh) PLOT POINT (INT 5F, HP 95LX/100LX/200LX GRAPHICS PRIMITIVES, AH=07h) PLOT TEXT (INT 50, PCIBM PC Thuis Organizer Shell, AX=0002h) Plug-and-Play 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. v1.0A (CALL xxxxh:xxxxh) PMOUSE - ??? (INT 66, PenDOS, AH=52h) PMOUSE - SET ??? (INT 66, PenDOS, AH=50h) POINTER TO 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. DATA SEGMENT (MEM 0050h:0010h) POINTER TO ECHO VALUE (INT F3, SoundBlaster) POINTER TO FIRST FREE SLOT IN KEYBOARD BUFFER (MEM 0040h:001Ch, KEYBOARD) POINTER TO NEXT CHARACTER IN KEYBOARD BUFFER (MEM 0040h:001Ah, KEYBOARD) POINTER TO VIDEO SAVE POINTER TABLE (MEM 0040h:00A8h, 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.)) POINTING DEVICE (PSIBM PS/2, any model) {callout or callback} (INT 74, IRQ12) POLL FAX (INT 2F, ZyXEL ZFAX v3+, AX=DB20h) POLL MIDPAK (INT 66, MIDPAK, AX=0711h) POLL REQUEST (INT 7D, SCSILink, AH=09h) POP UP (INT 03, DTown Utilities) POP UP (INT 16, PUPClip v1.12+, AX=CB08h) POP UP (INT 2D, DTown Utilities v1.40+, AL=21h) POP UP (INT 60, MDEBUG, AH=03h) POP UP (INT 60, MDEBUG, AH=04h) POP UP AND READ SCREEN FOR SEARCH TOPIC KEYWORD (INT 2F, XVIEW, AX=EE04h) POP UP FILE SELECTION 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=FFE5h) POP UP GIVING A PAGE NUMBER (INT 2F, XVIEW, AX=EE02h) POP UP GIVING FILENAME AND SEARCH TOPIC OR PAGE NUMBER (INT 2F, XVIEW, AX=EE03h) POP UP GIVING TOPIC SEARCH KEYWORD (INT 2F, XVIEW, AX=EE01h) POP UP LAST RECEIVED MESSAGE (INT 21, LANtastic v3+, AX=5F9Ch) POP UP TO MOST-RECENTLY VIEWED PAGE (INT 2F, XVIEW, AX=EE05h) POP UP {partially documented} (INT 2F, Player's Tool 3.996b+, AH=ACh) POP UP {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 96, KILL.COM, QKILL.COM) POPUP & START A DEBUG SESSION (INT 03, Soft-ICE v2.80, BACK DOOR COMMANDS, AX=0902h/SI=4647h/DI=4A4Dh) PORTIBM PC Portable (uses same BIOS as XT) 0022-0023 - Chips&Technologies 82C235 "SCAT" - CONFIGURATION REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 0022-0024 - OPTi "Vendetta" (82C750) CHIPSET - SYSTEM CONTROL REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 0022-0024 - OPTi "Viper" (82C557) CHIPSET - SYSTEM CONTROL REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 0028-002A - 80486 "Deep Green" motherboard - ??? () PORTIBM PC Portable (uses same BIOS as XT) 002E-002F - Intel "Nonolet" Motherboard - POWER MANAGEMENT () PORTIBM PC Portable (uses same BIOS as XT) 0065 - ??? () PORTIBM PC Portable (uses same BIOS as XT) 0073 - Intel 82378IB ("Saturn"/"Neptune" chipsets) - MBOARD CONFIGURATION () PORTIBM PC Portable (uses same BIOS as XT) 0075 - Intel 82378IB ("Saturn"/"Neptune" chipsets) - MBOARD CONFIGURATION () PORTIBM PC Portable (uses same BIOS as XT) 0078 - Intel 82378IB ("Saturn"/"Neptune" chipsets) - 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. COUNT-DOWN TIMER () PORTIBM PC Portable (uses same BIOS as XT) 0085-0086 - Intel "Triton" chipset - ??? () PORTIBM PC Portable (uses same BIOS as XT) 00A8-00A9 - Via VT82C496G "Pluto" - CONFIGURATION REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 00A8-00AC - Via VT82C570M "Apollo Master" - CONFIGURATION REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 00EB - DUMMY PORTIBM PC Portable (uses same BIOS as XT) FOR DELAY??? () PORTIBM PC Portable (uses same BIOS as XT) 00EB - Intel "Triton" chipset - ??? () PORTIBM PC Portable (uses same BIOS as XT) 00ED - DUMMY PORTIBM PC Portable (uses same BIOS as XT) FOR DELAY??? () PORTIBM PC Portable (uses same BIOS as XT) 0170-0176 - OPTi "Vendetta" (82C750) CHIPSET - SECONDARY IDE(Integrated Drive Electronics) A type of disk drive interface which essentially extends the PCIBM PC's expansion bus all the way to the drive and places the drive controller on the disk drive itself. See also ESDI. CONTROLLER () PORTIBM PC Portable (uses same BIOS as XT) 01F0-01F6 - OPTi "Vendetta" (82C750) CHIPSET - PRIMARY IDE(Integrated Drive Electronics) A type of disk drive interface which essentially extends the PCIBM PC's expansion bus all the way to the drive and places the drive controller on the disk drive itself. See also ESDI. CONTROLLER () PORTIBM PC Portable (uses same BIOS as XT) 01F8 - ??? () PORTIBM PC Portable (uses same BIOS as XT) 0208-0209 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 0208-020A - Chips&Technologies 82C235 "SCAT" chipset - EMSsee Expanded Memory Specification PAGE REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 0218-0219 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 0218-021A - Chips&Technologies 82C235 "SCAT" chipset - EMSsee Expanded Memory Specification PAGE REGISTERS () PORTIBM PC Portable (uses same BIOS as XT) 0258-0259 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 0268-0269 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 02A8-02A9 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 02B8-02B9 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 02E8-02E9 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control () PORTIBM PC Portable (uses same BIOS as XT) 0300- - HP IEC/HP-IB adapter (e.g. for use with tape streamer HP9142) {??, ??, ??, ??} () PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 - OPTi "Vendetta" Windows Sound System emulation (default addr) () PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 - Windows Sound System ("WSS") (default address) () PORTIBM PC Portable (uses same BIOS as XT) 0C00 - 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).??? - PAGE REGISTER () PORTIBM PC Portable (uses same BIOS as XT) 0F8E-0F8F - OPTi "Vendetta" (82C750) CHIPSET - Audio Module Data Registers () PORTIBM PC Portable (uses same BIOS as XT) 2102-2103 - XGA(Extended Graphics Array) ??? () PORTIBM PC Portable (uses same BIOS as XT) A220 - soundblaster support in AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. Hi-Flex BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. ???? () PORTIBM PC Portable (uses same BIOS as XT) C200-C204 - Intel Pentium mboard ("Neptune" chipset) () PORTIBM PC Portable (uses same BIOS as XT) C244 - Intel Pentium mboard ("Neptune" chipset) () PORTIBM PC Portable (uses same BIOS as XT) CLEANUP (INT 14, COMM-DRV v14.0, AH=82h) PORTIBM PC Portable (uses same BIOS as XT) CONTROL/INFORMATION (INT 7F, G8BPQ v4.00+, HOST MODE, AH=08h) PORTIBM PC Portable (uses same BIOS as XT) DRIVER (INT 6B, DECnet DOS) PORTIBM PC Portable (uses same BIOS as XT) xxxx - Intel 82371, OPTi "Vendetta" (82C750) - Bus Master IDE(Integrated Drive Electronics) A type of disk drive interface which essentially extends the PCIBM PC's expansion bus all the way to the drive and places the drive controller on the disk drive itself. See also ESDI. Registers () PORTS (MEM 0040h:00D4h, Digiboard MV/4) POS (PROGRAMMABLE OPTION SELECT) (PORTIBM PC Portable (uses same BIOS as XT) 0090-009F, PS/2IBM PS/2, any model) POSITION CURSOR (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=07h) POSITION MOUSE CURSOR (INT 33, MS MOUSE v1.0+, AX=0004h) POSTsee Power-On Self-Test AUDIO PENDING (INT 66, DIGPAK, AX=0695h) POSTsee Power-On Self-Test EVENT (INT 7F, Alloy MW386, AH=D7h) POSTsee Power-On Self-Test INITIALIZATION NOTIFICATION {callout or callback} (INT 15, Chips & Technologies '65530' 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=5F31h) POSTsee Power-On Self-Test LAST UNEXPECTED INTERRUPT (XTIBM PC XT and later) (MEM 0040h:006Bh) POSTsee Power-On Self-Test Memory Manager Specification (PMM) v1.0 (CALL xxxxh:xxxxh) POSTsee Power-On Self-Test MESSAGE ON LOCAL DISPLAY (INT 61, Banyan VINES, TALKPORT SERVICE, AX=0008h/BX=0002h) POSTsee Power-On Self-Test ON RECEIPT (INT 68, APPC/PCIBM PC, CONNECTION CONTROL, AH=02h) POSTsee Power-On Self-Test PROCESSING INTERRUPT (INT 65, 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. Software NDIS-Packet Driver adapter) POSTsee Power-On Self-Test RESET FLAG (MEM 0040h:0072h) POSTsee Power-On Self-Test STATUS (MEM 0040h:0012h, Convertible) POSTsee Power-On Self-Test SYSTEM FLAG (MEM 0040h:0012h, PS/2IBM PS/2, any model Model 25) POSTsee Power-On Self-Test TERMINAL CONFIGURATION CHANGES (INT 7F, Alloy MW386, AH=3Dh) POSTMSG Device (CALL xxxxh:xxxxh, MS Windows) POWER CONSERVATION (Compaq SLT/286) {callout or callback} (INT 77, IRQ15) POWER CONSERVATION (INT 10, Cirrus Logic 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. v3.02, AH=12h/BL=94h) POWER CONTROL AND RESET (PORTIBM PC Portable (uses same BIOS as XT) 007F, Chips&Technologies 82C100/110) Power Control register (PORTIBM PC Portable (uses same BIOS as XT) 0022, Intel 82439TX Chipset) POWER MANAGEMENT (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 60h, AWARD) POWER MANAGEMENT (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 61h, AWARD) POWER MANAGEMENT (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 62h, AWARD) POWER MANAGEMENT (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 63h, AWARD) Power Management (PORTIBM PC Portable (uses same BIOS as XT) 0178-0179) POWER MANAGEMENT FLAGS {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:00D8h, Phoenix 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. 4.0 Rel 6.0) Power Management Registers (PORTIBM PC Portable (uses same BIOS as XT) xxxx, AMD-645) POWER MANAGEMENT TIMEOUTS (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 5Fh, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. (PicoPower)) POWER-ON DAY OF MONTH (Resume by Alarm) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 55h, AWARD v4.51PG, APM) POWER-ON HOUR (Resume by Alarm) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 56h, AWARD v4.51PG, APM) POWER-ON MINUTE (Resume by Alarm) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 57h, AWARD v4.51PG, APM) POWER-ON SECOND (Resume by Alarm) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 58h, AWARD v4.51PG, APM) POWER-ON SELF-TEST ERROR LOG (PS50+IBM PS/2 Models 50,60,70,80) (INT 15, SYSTEM, AH=21h) POWER-SAVE CONFIGURATION (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 40h, AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. 1990 Hyundai super-NB368S notebook) POWER.EXE - APM event broadcasting??? {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=53h) POWER.EXE - GET/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=5480h/CX=0010h) POWER.EXE - GET/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=548Fh/BX=0000h) PowerLAN - ??? (INT 2F, AX=F483h) PowerLAN - INSTALLATION CHECK??? (INT 2F, AX=F400h) Prefetch (OPCODE PREFETCHxx) Prefetch CPU(Central Processing Unit) The microprocessor which executes programs on your computer. cache line into L1 data cache (OPCODE PREFETCH) Prefetch CPU(Central Processing Unit) The microprocessor which executes programs on your computer. cache line into L1 data cache (OPCODE PREFETCHW) PREFORMAT SOUND (INT 66, IBMSND driver, DIGPAK, AX=068Ah) PREPARE CHARACTER-ORIENTED RECEIVE (INT 17, Shamrock Software NET.24 v3.11+, AX=2406h) PREPARE CHARACTER-ORIENTED TRANSMIT (INT 17, Shamrock Software NET.24 v3.11+, AX=240Ah) PREPARE CODE PAGE {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, DR DOS 5.0+ NLSFUNC, AX=14FFh) PREPARE EXPANDED MEMORY HARDWARE FOR WARM BOOT (INT 67, LIM EMSsee Expanded Memory Specification 4.0, AH=5Ch) PREPARE FOR INBOUND CONNECTION (INT 14, Connection Manager, AH=0Bh/DX=FFFFh) PREPARE FOR UNINSTALL (INT 15, HP OmniShare, STANDBY.COM, AX=BA25h) PREPARE TO RECEIVE (INT 68, APPC/PCIBM PC, CONNECTION CONTROL, AH=02h) PREPARE TO UNLOAD AND GET XMSsee Extended Memory Specification HANDLE FOR Q87 MEMORY (INT 67, Q87 v4+, AX=2833h) PREPARE TO UNLOAD RESIDENT DESKTOP {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=FFF3h) PRESENTATION SPACE SERVICES (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3270 Workstation Program API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AH=09h/BX=8020h/CX=00FFh) PRESET/GET PERIPHERAL DATA (INT 61, Atari Portfolio, AH=1Ch) PREVIOUS SCAN CODE (MEM 0040h:0015h, Compaq Deskpro 386) PRIMARY DISPLAY DRIVER (INT 62, PC-DRAFT) PRINT CHARACTER {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=FFE3h) PRINT DATA BUFFER (INT 17, NorthNet Jetstream API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AH=F1h) PRINT DATA BUFFER FROM EXTENDED MEMORY (INT 17, NorthNet Jetstream API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AH=F5h) PRINT FAX (INT 2F, ZyXEL ZFAX v3+, AX=DB12h) PRINT JOB CONTROL {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, PSPRINT, AH=00h) PRINT PAGE (INT 2F, Intel Image Processing Interface, AX=CD05h) PRINT ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. MESSAGE (INT 48, TI Professional PCIBM PC, AH=07h/SI=F400h) PRINT SCREEN (INT 05) PRINT SCREEN (INT 4A, Tandy 2000) PRINT SCREEN (INT 8A, 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) PRINT SCREEN (INT CA, 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) PRINT SERVICE CONTROL (INT 61, Banyan VINES, AX=0005h) PRINT SPOOLING (INT 21, Novell NetWare, Alloy NTNX, AH=E0h) PRINT STRING (INT 17, PC-MOS/386 v5.01, PRINT SPOOLER, AH=03h) PRINT TTY STRING (INT 49, TI Professional PCIBM PC, CRT, AH=18h) PRINT-SCREEN STATUS (MEM 0050h:0000h) PrintCache v3.1 PCACHE.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 2F, AX=C005h) PrintCache v3.1 PCACHE.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 2F, AX=C006h) PrintCache v3.1 PCACHE.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 2F, AX=C007h) PrintCache v3.1 PCACHE.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 2F, AX=C00Ah) PrintCache v3.1 PCACHE.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 2F, AX=C013h) PrintCache v3.1 PCACHE.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 2F, AX=C014h) PrintCache v3.1 PCACHE.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 2F, AX=C015h) PrintCache v3.1 PCACHE.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 2F, AX=C018h) PrintCache v3.1 PCACHE.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 2F, AX=C019h) PrintCache v3.1 PCACHE.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 2F, AX=C01Ch) PrintCache v3.1 PCACHE.EXE - CLEAR ??? 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 2F, AX=C004h) PrintCache v3.1 PCACHE.EXE - CLEAR ??? 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 2F, AX=C008h) PrintCache v3.1 PCACHE.EXE - CLEAR ??? 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 2F, AX=C01Ah) PrintCache v3.1 PCACHE.EXE - DECREMENT ??? {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=C017h) PrintCache v3.1 PCACHE.EXE - 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=C00Ch) PrintCache v3.1 PCACHE.EXE - 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=C010h/CX=00h) PrintCache v3.1 PCACHE.EXE - 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=C011h) PrintCache v3.1 PCACHE.EXE - 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=C012h) PrintCache v3.1 PCACHE.EXE - INCREMENT ??? {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=C016h) PrintCache v3.1 PCACHE.EXE - INSTALL ??? {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=C00Eh) PrintCache v3.1 PCACHE.EXE - REMOVE ??? {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=C00Fh) PrintCache v3.1 PCACHE.EXE - SET ??? 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 2F, AX=C003h) PrintCache v3.1 PCACHE.EXE - SET ??? 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 2F, AX=C009h) PrintCache v3.1 PCACHE.EXE - SET ??? 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 2F, AX=C01Bh) PrintCache v3.1 PCACHE.EXE - 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=C00Dh) Printer (INT 47, Z100, Master 8259) PRINTER DRIVER - ??? (INT 17, PCIBM PC Paint Plus 2.0, AX=2003h) PRINTER DRIVER - GET ??? (INT 17, PCIBM PC Paint Plus 2.0, AX=2004h) PRINTER DRIVER - SET ??? FLAG (INT 17, PCIBM PC Paint Plus 2.0, AX=2001h) PRINTER READY INTERRUPT (INT FC, Sanyo MBC-550/555, IRQ4) PRINTER SETUP {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=111Fh) Priority Bus ID and Control (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Eh/24h, ITT VDP 31xxB) Priority Bus ID/enable register (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/24h, ITT VDP 3108) Priority Bus Override (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Eh/23h, ITT VDP 31xxB) Priority Bus overwrite register (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/23h, ITT VDP 3108) 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. (INT 2F, NEC PC-9800, XMZ, AX=4310h) 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. {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 67, Compaq CEMM v5.10+, AX=FFA5h/BX=4345h) PRNREDIR - ??? {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=01h/AL=03h) PRNREDIR - ??? {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=01h/AL=04h) PRNREDIR.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=06h) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 0280-0283) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 0284-0287) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 0288-028F) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 028C-028F) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 0384-0387) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 0388-038B) Pro Audio Spectrum 16 (PAS16) (PORTIBM PC Portable (uses same BIOS as XT) 038C-038F) PROBE MODE CONTROL REGISTER (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 8000h:001Dh, Pentium) PROCEDURE ENTRY TRAP (INT 60, JPI TopSPEED Modula-2 v1) PROCEDURE EXIT TRAP (INT 61, JPI TopSPEED Modula-2 v1) PROCESS COMMAND LINE (INT 81, Gravis UltraSound, MegaEm, AX=0200h) PROCESS CREATION {callout or callback} (INT 15, Omniview Multitasker, AX=5401h) PROCESS DESTRUCTION {callout or callback} (INT 15, Omniview Multitasker, AX=5402h) PROCESS INITIALIZING {partially documented} (INT 60, HP 95LX System Manager, DI=0600h) PROCESS STANDARD MENU BAR {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=FFFBh) PROCESS TERMINATION HOOK {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=1122h) PROCESS TERMINATION {partially documented} (INT 60, HP 95LX System Manager, DI=0601h) PROCESSOR CONTROL REGISTER (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:1004h, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 486BL3) PROCESSOR EXTENSION NOT AVAILABLE {callout or callback} (INT 07, CPU-generated (80286+)) PROCESSOR EXTENSION PROTECTION ERROR {callout or callback} (INT 09, CPU-generated (80286,80386)) Processor Information ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. (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. A2h, Pentium Pro/II/III) PROCESSOR OPERATION REGISTER (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:1000h, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 386/486 SLC) PROCESSOR OPERATION REGISTER (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:1002h, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 386/486 SLC) PROCESSOR PRIORITY REGISTER (PPR) (MEM FEE0h:00A0h, Pentium, LOCAL APIC) Processor Swap (INT 41, Z100, Master 8259) PRODUCT ID (MEM 0040h:00D1h, Digiboard MV/4) PROFILER STATUS (INT 60, SYS_PROF.EXE, AH=00h) PROGRAM LOAD NOTIFICATION {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 13, Super PC-Kwik v5.10+, AH=A6h/SI=4358h) PROGRAM TERMINATION ADDRESS (INT 22, DOS 1+) PROGRAM TERMINATION NOTIFICATION {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 13, Super PC-Kwik v5.10+, AH=A5h/SI=4358h) PROGRAM TERMINATION {callout or callback} (INT 15, OS HOOK, AH=82h) PROGRAMMABLE INTERRUPT CONTROLLER (8259) (PORTIBM PC Portable (uses same BIOS as XT) 007C-007D, HP-Vectra, PIC 3) PROGRAMMABLE INTERRUPT CONTROLLER (8259A) (PORTIBM PC Portable (uses same BIOS as XT) 0020-003F, PIC 1) PROGRAMMABLE INTERRUPT CONTROLLER (8259A) (PORTIBM PC Portable (uses same BIOS as XT) 00A0-00AF, PIC 2) PROGRAMMABLE INTERVAL TIMER (8253, 8254) (PORTIBM PC Portable (uses same BIOS as XT) 0040-005F, PIT) PROGRAMMABLE INTERVAL TIMER 2 (PORTIBM PC Portable (uses same BIOS as XT) 0044-0047, Microchannel) PROGRAMMABLE INTERVAL TIMER 2 (PORTIBM PC Portable (uses same BIOS as XT) 0048-004B, 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).) PROGRAMMABLE OPTION SELECT (PS50+IBM PS/2 Models 50,60,70,80) (INT 15, SYSTEM, AH=C4h) Programmable Option Select configuration byte 2 (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 21h, MCA) Programmable Option Select configuration byte 3 (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 22h, MCA) Programmable Option Select configuration byte 4 (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 23h, MCA) Programmable Option Select configuration byte 5 (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 24h, MCA) Prohibited Value (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. 00h/00h, General Call) PROMPT YES/NO (INT 50, PCIBM PC Thuis Organizer Shell, AX=0005h) Protected-Mode (CALL xxxxh:xxxxh, Virtual Control Program InterfaceA simple API for protected-mode programs to allocate memory and switch into or out of protected mode. See also DOS Protected-Mode Interface. (VCPIsee Virtual Control Program Interface)) PROTECTED-MODE 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, Cloaking) PROTECTED-MODE CALLBACK {protected mode} (INT 30, MS Windows 3.1+) PROTECTED-MODE VIRTUAL DMAsee Direct Memory Access SERVICES {protected mode} (INT 2C, Cloaking, AX=002Bh/CH=81h) PROTOCOL MANAGER (INT 21, Network Driver Interface Specification (NDIS(Network Driver Interface Specification) A hardware-independent network interface developed by Microsoft and 3com. See also Packet Driver, TCP/IP.) 2.0.1, AX=4402h/CX=000Eh) prototype cards (PORTIBM PC Portable (uses same BIOS as XT) 0300-031F) PS/2IBM PS/2, any model POS (Programmable Option Select) (PORTIBM PC Portable (uses same BIOS as XT) 0100-0107) PTR TO 3363 OPTICAL DISK DRIVER OR 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. ENTRY POINT (MEM 0040h:00B0h) PTR TO USER WAIT-COMPLETE FLAG (MEM 0040h:0098h, TIMER2 (ATIBM PC AT, PSIBM PS/2, any model exc Mod 30)) PTS-DOS 6.51, S/DOS 1.0+ - "EMPTY" (RESERVED FOR INPUT STRING) {callout or callback} (INT 2F, AX=1260h/DL=FFh) PTS-DOS 6.51, S/DOS 1.0+ - "SYSBELL" - EMIT A BEEP (INT 2F, AX=1270h) PURGE ALL ERASED FILES (INT 21, Novell NetWare, AX=F217h/DX=0000h) PURGE ALL ERASED FILES (INT 21, Novell NetWare, FILE SERVICES, AH=E3h) PURGE ERASED FILES (OLD) (INT 21, Novell NetWare, AX=F216h/DX=0000h) PURGE ERASED FILES (OLD) (INT 21, Novell NetWare, FILE SERVICES, AH=E2h) PURGE INPUT BUFFER THROWING AWAY ALL PENDING INPUT (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=0Ah) PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=09h) PURGE PENDING DELETE FILE (INT 21, Novell DOS 7, AX=4381h) PURGE SALVAGEABLE FILE (OLD) (INT 21, Novell NetWare, AX=F216h/DX=0000h) PURGE SALVAGEABLE FILE (INT 21, Novell NetWare, AX=F257h/DX=0000h) PUSH KEYSTROKES (INT 16, FAKEY.COM, AH=71h) PUT CHARACTER IN WINDOW (INT 50, Vanderaart TEXT WINDOWS, AX=0002h) PUT DATA (INT 7D, SCSILink, AH=06h) PUT IMAGE (INT 5F, HP 95LX/100LX/200LX GRAPHICS PRIMITIVES, AH=0Eh) PUT PIXEL (INT 10, CU Writer v1.4, AH=B0h) PWI Mode BreakPoint, ICE address space (OPCODE ICEBP) Q-PRO4 - ??? (INT 80) QEMM Programming Interface (QPI) (CALL xxxxh:xxxxh) QEXT.SYS 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) QPC Software PKTINT.COM - ENABLE??? (INT 80, AH=04h) 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. - EXECUTE RIP "END SCENE" COMMAND (INT 2F, AX=AC0Bh/DI=1092h) QUAD EMS+ - "QEMS_BOARD1" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2315) QUAD EMS+ - "QEMS_BOARD2" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2316) QUAD EMS+ - "QEMS_BOARD3" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2317) QUAD EMS+ - "QEMS_BOARD4" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2714) QUAD EMS+ - "QEMS_BOARD5" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2715) QUAD EMS+ - "QEMS_BOARD6" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2716) QUAD EMS+ - "QEMS_BOARD7" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 2717) QUAD EMS+ - "QEMS_INCR" - ??? (PORTIBM PC Portable (uses same BIOS as XT) 07FB) QUAD EMS+ - "QEMS_RESET" - RESET EMSsee Expanded Memory Specification??? (PORTIBM PC Portable (uses same BIOS as XT) 05FB) Quadtel HT12 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. 03.05.03 - ??? (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 3Eh) QUALIFY REMOTE FILENAME {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=1123h) Quantum ISA-200S/250MG 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 (PORTIBM PC Portable (uses same BIOS as XT) 0140-014F) Quantum ISA-200S/250MG 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 (PORTIBM PC Portable (uses same BIOS as XT) 0150-015F) Quantum ISA-200S/250MG 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 (PORTIBM PC Portable (uses same BIOS as XT) 0160-016F) Quantum ISA-200S/250MG 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 (PORTIBM PC Portable (uses same BIOS as XT) 0170-017F) Quarterdeck VIDRAM (CALL xxxxh:xxxxh) QUERY 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 SUPPORT (INT 15, SYSTEM, later PSIBM PS/2, any model/2s, AX=2403h) QUERY APPLICATION KEY (INT 61, OPTIMA 1024 VGA-Sync,ET-3000 chipset, AX=0007h) QUERY BOOT REFERENCE PARTITION (INT 15, later PSIBM PS/2, any model/2s, AX=D602h) QUERY CLOSE (INT 2F, Windows95, CLOSE-AWARENESS, AX=168Fh/DH=01h/DL=00h) QUERY COMM CHANNEL RECEIVE QUEUE {partially documented} (INT 60, HP 95LX System Manager, DI=0E0Ah) QUERY COMM CHANNEL TRANSMIT QUEUE {partially documented} (INT 60, HP 95LX System Manager, DI=0E09h) QUERY CRITICAL SECTION (INT 62, BW-TCP, HW DRIVER (ETHDEV.SYS), AH=10h) QUERY 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=0002h) QUERY DRIVER STATE (INT 2F, AVATAR(Advanced Video Attribute Terminal Assembler and Recreator) A set of control codes which may be used to affect the output of characters to the screen on systems equipped with an appropriate driver. Similar in intent to ANSI sequences, AVATAR has shorter command sequences and provides additional PC-specific functionality. AVATAR is primarily used by the Opus and Maximus bulletin board systems (it was designed by one of the developers of the Opus system)..SYS, AX=1A3Fh) QUERY FOR NEW CURRENT DRIVE (INT 2F, WinDOS v2.11, AX=AF17h) QUERY FREE HMAsee High Memory Area SPACE (INT 2F, DOS 5+, AX=4A01h) QUERY GENERIC IOCTL CAPABILITY (DRIVE) (INT 21, DOS 5+, IOCTL, AX=4411h) QUERY GENERIC IOCTL CAPABILITY (HANDLE) (INT 21, DOS 5+, IOCTL, AX=4410h) QUERY LICENSE (INT 2F, License Service 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=7005h/CX=001Fh) QUERY MODE STATUS (INT 10, VIDEO, Paradise VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers., AT&TAmerican Telephone and Telegraph VDC600, AX=007Fh/BH=02h) QUERY NAME SERVICE (INT 6B, NPC NCSI EXTENDED SERIAL I/O, AH=21h/CL=01h) QUERY PHYS FREE SPACE {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, SUPERSTOR, AX=1010h/CX=0000h) QUERY SERVICE NAMES (INT 14, Connection Manager, AH=10h/DX=FFFFh) QUERY SIZE OF THE BDOS {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, DR DOS 6.0+ IBMBIO.COM, AX=12FFh/BX=0000h) QUERY SIZE OF THE 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. {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, DR DOS 6.0+ IBMBIO.COM, AX=12FFh/BX=0002h) QUERY SPOOLER ACTIVE (INT 17, PCIBM PC Magazine PCSpool, AH=C4h) QUERY SUBST (INT 21, Windows95, LONG FILENAME, AX=71AAh/BH=02h) QUERY ZOOM INTERRUPT (INT 16, OPTIMA 1024 VGA-Sync,ET-3000 chipset, AH=FFh) QUERY ZOOM WINDOW (INT 61, OPTIMA 1024 VGA-Sync, AX=0005h) QUICKCACHE II v4.20 - ENABLE/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 13, AH=3Bh) QUICKCACHE II v4.20 - ENABLE/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 13, AH=3Ch) QUICKCACHE II v4.20 - GET ??? ADDRESS {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, AH=23h) QUICKCACHE II v4.20 - SAVE/RESTORE ??? {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, AH=41h) QUICKCACHE II v4.20 - SET "sticky_max" {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, AH=40h) QUOTE PREVIOUS STATUS (INT 2F, ZyXEL ZFAX v4.01, AX=DB16h) RAID - 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=9001h) RAID - 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=9004h) RAISE ALL MODEM CONTROL SIGNALS (INT 14, MBBIOS, AX=0D02h) RAISE DTR AND RTS (INT 14, MBBIOS, AH=06h) RAISE PROGRAMMING VOLTAGE Vpp (INT 16, 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., BIOS-FLASH Interface, AX=E005h) RAISE/LOWER DTR (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=06h) RAM-BASED SERVER (INT 2F, Microsoft Realtime Compression Interface (MRCI), AX=4A12h/CX=4D52h/DX=4349h) RAMP VOLUME (INT 18, Gravis Ultra Sound YEA_GUS.EXE, AX=6909h) RANDOM BLOCK READ FROM FCBsee File Control Block FILE (INT 21, DOS 1+, AH=27h) RANDOM BLOCK WRITE TO FCBsee File Control Block FILE (INT 21, DOS 1+, AH=28h) RANDOM SOUND FEATURE {partially documented} (INT 94, Media Vision PCM.COM, AL=04h/SI=8017h) Rational Systems DOS/16M - ??? (INT 15, AX=BF00h) Rational Systems DOS/16M - ??? (INT 15, AX=BF01h) Rational Systems DOS/4GW - ??? (INT 15, AX=BF04h) Rational Systems DOS/4GW - ??? (INT 15, AX=BF06h) Rational Systems DOS/4GW - ??? {callout or callback} (INT 2F, AX=1607h/BX=22C0h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=05h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=06h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=07h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=08h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=0Ah) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=0Bh) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=0Dh) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=0Eh) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=0Fh) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=10h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=13h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=14h) Rational Systems DOS/4GW - ??? {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., protected mode} (INT 21, AH=FFh/DH=17h) Rational Systems DOS/4GW - EXCHANGE ??? 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., protected mode} (INT 21, AH=FFh/DH=12h) Rational Systems DOS/4GW - GET ??? FUNCTIONS {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., protected mode} (INT 21, AH=FFh/DH=15h) Rational Systems DOS/4GW - 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., protected mode} (INT 21, AH=FFh/DH=09h) Rational Systems DOS/4GW - 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., protected mode} (INT 21, AH=FFh/DH=16h) Rational Systems DOS/4GW - GET VERSION??? {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., protected mode} (INT 21, AH=FFh/DH=00h) Rational Systems DOS/4GW - GET/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., protected mode} (INT 21, AH=FFh/DH=0Ch/DL=01h) Rational Systems DOS/4GW - 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., protected mode} (INT 21, AH=FFh/DH=02h) Rational Systems DOS/4GW - UNINSTALL??? (INT 15, AX=BF03h) RE-INITIALIZE INT 09 HANDLER (INT 2F, MediaVision MVSOUND.SYS, AX=BC0Eh) Read (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. 03h, Reserved, CBUS Address) READ ABSOLUTE SECTOR(S) (CALL 0060h:0015h, Eagle MS-DOS v1.25 IO.SYS) READ ALL PALETTE REGISTERS AND OVERSCAN REGISTER (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) (INT 10, VIDEO, AX=1009h) READ AUDIT CONFIG HEADER (INT 21, Novell NetWare, AX=F258h) READ AUDITING BITMAP (INT 21, Novell NetWare, AX=F258h) READ 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. UPDATE AREA {real mode} (INT 15, Intel Pentium Pro 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. UPDATE, AX=D042h/BL=03h) READ BLOCK (INT 14, 3com BAPI SERIAL I/O, AH=A5h) READ BLOCK (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=18h) READ BLOCK (INT 14, TelAPI, AH=07h) READ BLOCK OF 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. REGISTERS (VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./MCGAMulti-Color Graphics Array(Multi-Color Graphics Array) The low-end color adapter offered in IBMInternational Busiuness Machines's early PS/2IBM PS/2, any model series machines.) (INT 10, VIDEO, AX=1017h)