RBIL61 - XT

Bibliography {#idx166889}{#idx166892}

CALL xxxxh:xxxxh - 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 {#idx159882}{#idx160304}{#idx160351}{#idx160354}{#idx160369}{#idx160372}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 4Ch - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. (Saturn) - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx169441}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 4Eh - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. (Saturn) - SERIAL PORTIBM PC Portable (uses same BIOS as XT) {#idx169470}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 66h - AWARD - ??? unused ??? {#idx169883}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 70h - AWARD - TYPE OF SECOND DRIVE ON SECOND 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. PORTIBM PC Portable (uses same BIOS as XT) {#idx169901}

I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Eh/1Fh - ITT VDP 31xxB - INTLC & PORTIBM PC Portable (uses same BIOS as XT) Pin Control {#idx171705}

INT 02 - STB RAPIDMAP.SYS - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx172}

INT 0D - IRQ5 - FIXED DISK (PCIBM PC,XTIBM PC XT), LPT2 (ATIBM PC AT), reserved (PS/2IBM PS/2, any model) {callout or callback} {#idx1037}{#idx1040}

INT 10 - ATI Mach64 BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET ??? {#idx6400}

INT 10 - V20-XT-BIOS - TELETYPE OUTPUT WITH ATTRIBUTE {#idx2227}{#idx2233}{#idx2239}

INT 10 - VIDEO - FUNCTIONALITY/STATE INFORMATION (PSIBM PS/2, any model,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.) {#idx3513}{#idx3517}

INT 10 - VIDEO - WRITE STRING (ATIBM PC AT and later,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.) {#idx3323}{#idx3326}

INT 11 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET EQUIPMENT LIST {#idx7439}{#idx7442}

INT 12 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET MEMORY SIZE {#idx7749}{#idx7752}

INT 13 - DISK - GET DISK TYPE (XTIBM PC XT 1986/1/10 or later,XT286IBM PC XT/286,ATIBM PC AT,PSIBM PS/2, any model) {#idx9022}{#idx9025}{#idx9026}{#idx9031}

INT 13 - DISK - GET DRIVE PARAMETERS (PCIBM PC,XT286IBM PC XT/286,CONVIBM Convertible,PSIBM PS/2, any model,ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE.,SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer. A host adapter connects the SCSI bus to the computer's own bus. See also ESDI, IDE.) {#idx8496}{#idx8501}

INT 13 - DISK - SET MEDIA TYPE FOR FORMAT (ATIBM PC AT model 3x9,XT2IBM PC XT 2,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx9225}{#idx9229}{#idx9230}{#idx9235}

INT 13 - DISK - VERIFY DISK SECTOR(S) {#idx8171}{#idx8174}

INT 13 - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. FIXED DISK - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx9605}{#idx9631}{#idx9641}

INT 13 - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. FIXED DISK - GET COMMAND COMPLETION STATUS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx9472}

INT 13 - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. FIXED DISK - GET DEVICE STATUS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx9535}

INT 13 - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. FIXED DISK - TRANSLATE RBA TO ABA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx9621}

INT 13 - FIXED DISK - FORMAT DRIVE STARTING ATIBM PC AT GIVEN TRACK (XTIBM PC XT,PORTIBM PC Portable (uses same BIOS as XT)) {#idx8446}{#idx8449}{#idx8453}{#idx8454}{#idx8457}

INT 13 - FIXED DISK - FORMAT TRACK AND SET BAD SECTOR FLAGS (XTIBM PC XT,PORTIBM PC Portable (uses same BIOS as XT)) {#idx8351}{#idx8354}{#idx8358}

INT 13 - FIXED DISK - PARK HEADS ON ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. DRIVE (XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx9315}{#idx9320}

INT 13 - FLOPPY - FORMAT TRACK {#idx8247}

INT 13 - FLOPPY DISK - DETECT DISK CHANGE (XTIBM PC XT 1986/1/10 or later,XT286IBM PC XT/286,ATIBM PC AT,PSIBM PS/2, any model) {#idx9088}{#idx9091}{#idx9092}{#idx9097}

INT 13 - Future Domain 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. CONTROLLER - GET POINTER TO FREE CONTROLLER RAM(Random Access Memory) See also DRAM, SRAM. {#idx9455}

INT 13 - HARD DISK - CONTROLLER RAM(Random Access Memory) See also DRAM, SRAM. DIAGNOSTIC (XTIBM PC XT,PSIBM PS/2, any model) {#idx8908}{#idx8911}

INT 13 - HARD DISK - DRIVE DIAGNOSTIC (XTIBM PC XT,PSIBM PS/2, any model) {#idx8956}{#idx8959}

INT 13 - HARD DISK - INITIALIZE CONTROLLER WITH DRIVE PARAMETERS (ATIBM PC AT,PSIBM PS/2, any model) {#idx8692}{#idx8695}

INT 13 - HARD DISK - READ SECTOR BUFFER (XTIBM PC XT only) {#idx8827}{#idx8830}

INT 13 - HARD DISK - WRITE SECTOR BUFFER (XTIBM PC XT only) {#idx8852}{#idx8855}{#idx8869}

INT 14 - 3com BAPI SERIAL I/O - CONNECT TO PORTIBM PC Portable (uses same BIOS as XT) {#idx14708}

INT 14 - 3com BAPI SERIAL I/O - DISCONNECT FROM PORTIBM PC Portable (uses same BIOS as XT) {#idx14739}

INT 14 - Alloy MW386 v2+ - CHANGE PHYSICAL PORTIBM PC Portable (uses same BIOS as XT) PARAMETERS {#idx13594}

INT 14 - Alloy MW386 v2+ - GET PORTIBM PC Portable (uses same BIOS as XT) NUMBER FROM LOGICAL PORTIBM PC Portable (uses same BIOS as XT) ID {#idx13544}{#idx13548}{#idx13562}{#idx13577}

INT 14 - Alloy MW386 v2+ - RELEASE LOGICAL COMMUNICATIONS PORTIBM PC Portable (uses same BIOS as XT) {#idx13502}

INT 14 - ARTICOM - GET ASYNCHRONOUS REDIRECTOR STATUS {#idx14132}{#idx14136}

INT 14 - ARTICOM - GET REDIRECTED PORTIBM PC Portable (uses same BIOS as XT) INFORMATION {#idx14219}

INT 14 - ARTICOM - INSTALLATION CHECK {#idx14036}

INT 14 - ARTICOM - TRANSLATE ERROR CODE TO ERROR STRING {#idx14172}

INT 14 - ARTICOM - UNLOAD ASYNCHRONOUS REDIRECTOR FROM MEMORY {#idx14099}{#idx14103}

INT 14 - COMM-DRV v14.0 - GET HIGHEST ALLOWED PORTIBM PC Portable (uses same BIOS as XT) NUMBER {#idx15329}

INT 14 - Connection Manager - RETURN COMMUNICATION PORTIBM PC Portable (uses same BIOS as XT) STATUS {#idx11849}

INT 14 - COURIERS.COM - CHECK IF PORTIBM PC Portable (uses same BIOS as XT) BUSY {#idx14287}

INT 14 - COURIERS.COM - CONFIGURE PORTIBM PC Portable (uses same BIOS as XT) {#idx14490}{#idx14508}

INT 14 - COURIERS.COM - DECONFIGURE PORTIBM PC Portable (uses same BIOS as XT) {#idx14672}

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. - FLUSH OUTPUT BUFFER WAITING TILL ALL OUTPUT IS DONE {#idx12456}

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. - PURGE OUTPUT BUFFER THROWING AWAY ALL PENDING OUTPUT {#idx12521}

INT 14 - HP Vectra EX-BIOS - "F14_EXINIT" - INITIALIZE SERIAL PORTIBM PC Portable (uses same BIOS as XT) {#idx13902}

INT 14 - I1541 - SELECT LPTAbbreviation for Line PrinTer. PORTIBM PC Portable (uses same BIOS as XT) FOR OUTPUT {#idx13744}

INT 14 - SERIAL - EXTENDED COMMUNICATION PORTIBM PC Portable (uses same BIOS as XT) CONTROL (CONVERTIBLE,PSIBM PS/2, any model) {#idx12110}{#idx12148}{#idx12181}

INT 14 - SERIAL - EXTENDED INITIALIZE (CONVERTIBLE,PSIBM PS/2, any model) {#idx11936}

INT 14 - SERIAL - GET PORTIBM PC Portable (uses same BIOS as XT) STATUS {#idx11818}

INT 14 - SERIAL - INITIALIZE PORTIBM PC Portable (uses same BIOS as XT) {#idx11624}{#idx11661}{#idx11687}{#idx11709}

INT 14 - SERIAL - READ CHARACTER FROM PORTIBM PC Portable (uses same BIOS as XT) {#idx11779}

INT 14 - SERIAL - WRITE CHARACTER TO PORTIBM PC Portable (uses same BIOS as XT) {#idx11746}

INT 14 - TelAPI - "telattach" - ATTACH COM PORTIBM PC Portable (uses same BIOS as XT) TO/FROM TELNET SESSION {#idx15164}

INT 14 - TelAPI - "telportosn" - GET SESSION NUMBER FOR COM PORTIBM PC Portable (uses same BIOS as XT) {#idx15175}

INT 14 - X00 FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use. - ACTIVATE PORTIBM PC Portable (uses same BIOS as XT) {#idx13301}

INT 14 - X00 FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use. - DEACTIVATE PORTIBM PC Portable (uses same BIOS as XT) {#idx13314}

INT 14 - X00 FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use. - DESTRUCTIVE READ WITH NO WAIT {#idx13406}{#idx13410}{#idx13419}

INT 14 - X00 FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use. - EXTENDED SERIAL PORTIBM PC Portable (uses same BIOS as XT) STATUS/CONTROL {#idx13361}

INT 15 - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. PCI BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - GET 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. AND CHIPSET IDENTIFICATION {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx23714}

INT 15 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - JOYSTICK SUPPORT (XTIBM PC XT after 1982/11/8,ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx20697}{#idx20700}{#idx20705}{#idx20710}{#idx20723}

INT 15 - BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. - SET EVENT WAIT INTERVAL (ATIBM PC AT,PS50+IBM PS/2 Models 50,60,70,80) {#idx20662}{#idx20665}

INT 15 - DOS/V - FONT SUBSYSTEM ACCESS {#idx19136}{#idx19139}

INT 15 - HUNTER 16 - GET DISKETTE PORTIBM PC Portable (uses same BIOS as XT) {#idx20789}

INT 15 - HUNTER 16 - SET DISKETTE PORTIBM PC Portable (uses same BIOS as XT) {#idx20799}

INT 15 - KEYBOARD - KEYBOARD INTERCEPT (ATIBM PC AT model 3x9,XT2IBM PC XT 2,XT286IBM PC XT/286,CONVIBM Convertible,PSIBM PS/2, any model) {callout or callback} {#idx19088}{#idx19092}{#idx19093}{#idx19098}

INT 15 - OS HOOK - COMPLETION OF SYSREQ FUNCTION (ATIBM PC AT,XT286IBM PC XT/286,PS50+IBM PS/2 Models 50,60,70,80) {#idx18441}{#idx18446}

INT 15 - OS HOOK - DEVICE OPEN (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {callout or callback} {#idx20577}{#idx20582}{#idx20599}{#idx20602}

INT 15 - OS HOOK - SETUP SYSREQ ROUTINE (ATIBM PC AT,XT286IBM PC XT/286,PS50+IBM PS/2 Models 50,60,70,80) {#idx18422}{#idx18427}

INT 15 - PS/2IBM PS/2, any model Model 95 - READ/WRITE CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. MEMORY {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx23054}{#idx23057}

INT 15 - SYSTEM - COPY EXTENDED MEMORY {#idx20898}{#idx20911}{#idx20914}

INT 15 - SYSTEM - GET EXTENDED MEMORY SIZE (286+) {#idx20959}{#idx20962}

INT 15 - SYSTEM - later PSIBM PS/2, any model/2s - DISABLE A20(Address line 20) The 80286 and higher CPUs allow addresses in real mode to extend slightly beyond the one megabyte mark, which causes an incompatibility with some older programs which expect such addresses to wrap back to the beginning of the address space. For complete compatibility with the 8088, newer machines thus contain circuitry which permits the twenty-first address line (A20) to be disabled. The CPU then effectively has only twenty address lines in real mode, just as the 8088 does, and addresses which would extend beyond the one megabyte mark wrap to the beginning of the address space. See also High Memory Area, Real Mode. GATE {#idx18597}{#idx18601}

INT 15 - SYSTEM - later PSIBM PS/2, any model/2s - ENABLE 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 {#idx18622}

INT 15 - SYSTEM - POINTING DEVICE 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. INTERFACE - READ FROM POINTER PORTIBM PC Portable (uses same BIOS as XT) {#idx22807}

INT 15 - SYSTEM - POINTING DEVICE 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. INTERFACE - WRITE TO POINTER PORTIBM PC Portable (uses same BIOS as XT) {#idx22798}

INT 15 - V20-XT-BIOS - JOYSTICK SUPPORT {#idx20728}{#idx20734}

INT 15h - Arabic/Hebrew MS-DOS 5.0???+ - HGC(Hercules Graphics Card) A monochrome video adapter capable of 720x352 monochrome graphics. The HGC was the first non-IBM video adapter for the IBMInternational Busiuness Machines PCIBM PC. See also CGAColor Graphics Adapter, MDA. & HGC(Hercules Graphics Card) A monochrome video adapter capable of 720x352 monochrome graphics. The HGC was the first non-IBM video adapter for the IBMInternational Busiuness Machines PCIBM PC. See also CGAColor Graphics Adapter, MDA./RAMFont support??? {#idx20365}{#idx20368}

INT 16 - Frank Klemm Keyboard Driver v2.0 - 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. {#idx25733}{#idx25736}

INT 16 - K3PLUS v6.00+ (API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. v2.0+) - GET VERSION INFORMATION {#idx26630}{#idx26637}{#idx26640}

INT 16 - pcANYWHERE III - COMMUNICATIONS I/O THROUGH PORTIBM PC Portable (uses same BIOS as XT) {#idx26448}

INT 16 - pcANYWHERE III - GET PORTIBM PC Portable (uses same BIOS as XT) CONFIGURATION {#idx26430}

INT 17 - Alloy NTNX - SET SERIAL PORTIBM PC Portable (uses same BIOS as XT) PARAMETERS {#idx29478}

INT 17 - PRINTER - INITIALIZE PORTIBM PC Portable (uses same BIOS as XT) {#idx28575}

INT 17 - PRINTER - WRITE CHARACTER {#idx28550}

INT 18 - DISKLESS BOOT HOOK (START CASSETTE BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN. There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular. All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM.) {#idx29882}{#idx29885}

INT 1A - PCI BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. v2.0c+ - READ CONFIGURATION DWORDDoubleword; four bytes. Commonly used to hold a 32-bit segment:offset or selector:offset address. (Intel devices) {#idx35417}{#idx35602}{#idx35681}{#idx35708}{#idx35717}{#idx35721}{#idx35801}{#idx35827}{#idx35848}{#idx35890}{#idx35900}{#idx35904}{#idx35913}{#idx35937}{#idx35976}{#idx36003}{#idx36257}{#idx36299}{#idx36499}{#idx36792}{#idx36803}{#idx36991}{#idx37157}{#idx37542}{#idx37553}{#idx37568}{#idx37588}{#idx37601}{#idx37610}{#idx37617}{#idx37633}{#idx37648}{#idx37662}{#idx37670}{#idx37679}{#idx37688}{#idx37700}{#idx37707}{#idx37714}{#idx37724}{#idx37731}{#idx37739}{#idx37748}{#idx37757}{#idx37764}{#idx37771}{#idx37786}{#idx37802}{#idx37813}{#idx37824}{#idx37839}{#idx37858}{#idx37868}{#idx37878}{#idx37890}{#idx37902}{#idx37924}{#idx37935}{#idx37946}{#idx37962}{#idx38022}{#idx38033}{#idx38048}{#idx38071}{#idx38080}{#idx38089}{#idx38098}{#idx38106}{#idx38116}{#idx38125}{#idx38136}{#idx38151}{#idx38242}{#idx38252}{#idx38296}{#idx38302}{#idx38308}{#idx38314}{#idx38326}{#idx38333}{#idx38339}{#idx38344}{#idx38350}{#idx38377}{#idx38394}{#idx38516}

INT 1A - TIME - CANCEL ALARM (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30667}{#idx30672}

INT 1A - TIME - GET REAL-TIME CLOCK DATE (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30525}{#idx30530}

INT 1A - TIME - GET REAL-TIME CLOCK TIME (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30427}{#idx30432}

INT 1A - TIME - READ SYSTEM-TIMER DAY COUNTER (XT2IBM PC XT 2,PSIBM PS/2, any model) {#idx30714}{#idx30718}

INT 1A - TIME - SET ALARM (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30635}{#idx30640}

INT 1A - TIME - SET REAL-TIME CLOCK DATE (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30605}{#idx30610}

INT 1A - TIME - SET REAL-TIME CLOCK TIME (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30483}{#idx30488}

INT 1A - TIME - SET SYSTEM-TIMER DAY COUNTER (XT2IBM PC XT 2,PSIBM PS/2, any model) {#idx30730}{#idx30734}

INT 21 - CD-ROM device driver - IOCTL INPUT {#idx47490}

INT 21 - LANstep - ??? {#idx58242}

INT 21 - LASTBYTE.SYS v1.19 - IOCTL - GET ??? TABLE {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx46737}{#idx46740}{#idx46781}

INT 21 - Novell NetWare - FILE SERVER - GET DRIVE MAPPING TABLE {#idx61930}{#idx61933}

INT 21 - Novell NetWare - GET DRIVE MAPPING TABLE {#idx67037}{#idx67040}

INT 21 - Phar Lap 386/DOS-Extender - GET CONFIGURATION INFORMATION {protected mode} {#idx42875}{#idx42878}{#idx42915}

INT 21 - TopWare Network OS v5.10+ - GET/SET LPTAbbreviation for Line PrinTer. PORTIBM PC Portable (uses same BIOS as XT) ON PRINT SERVER {#idx71818}

INT 22 - COMTROL HOSTESS i/ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA. DEBUGGER - CHANGE FIRMWARE DEBUGGING PORTIBM PC Portable (uses same BIOS as XT) {#idx72027}

INT 2C - Cloaking - GET TRAPPING STATE OF SPECIFIED PORTIBM PC Portable (uses same BIOS as XT) {protected mode, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx73678}

INT 2C - Cloaking - TRAP I/O PORTIBM PC Portable (uses same BIOS as XT) {protected mode} {#idx73652}

INT 2C - Cloaking - UNTRAP I/O PORTIBM PC Portable (uses same BIOS as XT) {protected mode, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx73665}

INT 2F - INTERLNK - CHECK IF PORTIBM PC Portable (uses same BIOS as XT) IN USE {#idx85825}

INT 2F - MS Windows - GET DEVICE 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. ENTRY POINT {#idx80093}

INT 2F - MS Windows - VPD - GET 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. ENTRY POINT {protected mode} {#idx80322}

INT 2F - MS-DOS 3.3+ KEYB.COM internal - INSTALLATION CHECK {partially documented} {#idx89699}{#idx89702}

INT 2F - XVIEW - WAIT FOR POP-DOWN AND GET EXIT CODE {#idx95073}

INT 33 - LOGITECH MOUSE - SET PARAMETERS - SET MOUSE PORTIBM PC Portable (uses same BIOS as XT) (SERIAL MOUSE ONLY) {#idx99588}

INT 41 - SYSTEM DATA - HARD DISK 0 PARAMETER TABLE ADDRESS [NOT A VECTOR!] {#idx99977}{#idx99980}{#idx99985}{#idx99988}{#idx99990}{#idx99993}{#idx99995}{#idx99998}{#idx100001}{#idx100004}{#idx100016}{#idx100019}

INT 4B - TI Professional PCIBM PC - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) - GET PRINTER STATUS {#idx101490}

INT 4B - TI Professional PCIBM PC - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) - INITIALIZE PRINTER {#idx101471}

INT 4B - TI Professional PCIBM PC - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) - OUTPUT CHARACTER {#idx101443}

INT 4B - Virtual DMA SpecificationA set of interrupt calls which permit the use of DMA even on systems running in protected or Virtual-86 mode with their address remapping, or systems such as Micro Channel PSIBM PS/2, any model/2s with multiple bus masters independently performing DMA operations. (VDSsee Virtual DMA Specification) - GET VERSION {#idx101540}{#idx101543}

INT 60 - FTP(File Transfer Protocol) The standard protocol for copying files from one machine to another on a TCP/IP (Internet) network. Also the program of the same name with which a user may transfer files. Packet DriverAny one of the numerous drivers conforming to FTP Software's Packet Driver Specification, which provides a hardware-independent network interface. See also NDIS, ODI. - 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. FUNC - GET DRIVER INFO {#idx106725}{#idx106728}

INT 60 - RIFS - CLIENT - GET PORTIBM PC Portable (uses same BIOS as XT) TRANSLATION TABLE {#idx106623}

INT 61 - Atari Portfolio - GET SERIAL PORTIBM PC Portable (uses same BIOS as XT) PARAMETERS {#idx109598}

INT 61 - Banyan VINES - GET MM PORTIBM PC Portable (uses same BIOS as XT) FOR A SERVICE {#idx108519}

INT 61 - Banyan VINES - TRANSLATE ERROR INTO ASCII STRING (SELECTED PORTIBM PC Portable (uses same BIOS as XT)) {#idx108602}

INT 67 - LIM EMSsee Expanded Memory Specification - reserved - GET I/O PORTIBM PC Portable (uses same BIOS as XT) ADDRESSES {#idx116391}

INT 67 - RM386 - V86-MODE I/O PORTIBM PC Portable (uses same BIOS as XT) TRAPPING CONTROL {#idx116846}

INT 67 - RM386 - V86-MODE I/O TRAPPING PORTIBM PC Portable (uses same BIOS as XT) CONTROL {#idx116872}

INT 6B - DECnet DOS - PORTIBM PC Portable (uses same BIOS as XT) DRIVER {#idx118855}

INT 78 - TARGA.DEV - CMC International 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. device driver - SET I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx122071}

INT 78 - TARGA.DEV - GET I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx122221}

INT 7C - SK-UPPS Data Link Interface API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. - DLI 2.6+ - GET MEDIA STATISTICS {#idx123901}{#idx123907}

INT 7F - Alloy MW386 - GET PORTIBM PC Portable (uses same BIOS as XT) INFORMATION {#idx125568}

INT 7F - Alloy MW386 - WRITE BYTE TO CONSOLE PORTIBM PC Portable (uses same BIOS as XT) {#idx125879}

INT 7F - Alloy MW386 - WRITE BYTE TO TERMINAL AUX PORTIBM PC Portable (uses same BIOS as XT) {#idx125860}

INT 7F - Alloy MW386 v1.x only - CHECK PORTIBM PC Portable (uses same BIOS as XT) ASSIGNMENT {#idx125580}

INT 7F - Alloy NTNX (Host) - GET INTERRUPT VECTORS {#idx125062}

INT 88h - WANG PCIBM PC - GET CONFIGURATION {#idx126848}

INT 90 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BASIC(Beginner's All-purpose Symbolic Instruction Code) A programming language originally designed as a means of teaching FORTRAN. There are many variations of BASIC with differing capabilities; the majority are interpreted but compiled BASIC is becoming more popular. All genuine IBMInternational Busiuness Machines personal computers (including the latest PS/2IBM PS/2, any model models) come equipped with a cassette-based BASIC interpreter in ROM. - used while in interpreter {#idx127102}

INT D4 - PC-MOS/386 v5.01 - GET PORTIBM PC Portable (uses same BIOS as XT) AND BAUDRATE INFORMATION {#idx129024}

INT E0 - REAL/32 - "DEV_MAP" - GET/SET SERIAL/PARALLEL PORTIBM PC Portable (uses same BIOS as XT) MAPPINGS {#idx131303}

INT E6 - Linux DOSEMU - SET I/O PORTIBM PC Portable (uses same BIOS as XT) PERMISSIONS {#idx131794}

INT FA - Sanyo MBC-550/555 - IRQ2 - SERIAL PORTIBM PC Portable (uses same BIOS as XT) USART(Universal Synchronous/Asynchronous Receiver/Transmitter) see also UART INTERRUPT {#idx132595}

INT FE - ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80 - destroyed by return from protected mode {#idx132735}{#idx132740}{#idx132762}{#idx132767}

INT FF - ATIBM PC AT/XT286IBM PC XT/286/PS50+IBM PS/2 Models 50,60,70,80 - destroyed by return from protected mode {#idx132797}{#idx132802}{#idx132812}{#idx132817}{#idx132819}{#idx132824}

Interrupt Primer {#idx176848}{#idx176851}

MEM 0040h:0000h - BASE I/O ADDRESS OF FIRST SERIAL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160640}{#idx160658}

MEM 0040h:0002h - BASE I/O ADDRESS OF SECOND SERIAL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160665}{#idx160682}

MEM 0040h:0004h - BASE I/O ADDRESS OF THIRD SERIAL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160689}{#idx160705}

MEM 0040h:0006h - BASE I/O ADDRESS OF FOURTH SERIAL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160712}{#idx160728}

MEM 0040h:0008h - BASE I/O ADDRESS OF FIRST PARALLEL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160734}{#idx160749}{#idx160754}

MEM 0040h:000Ah - BASE I/O ADDRESS OF SECOND PARALLEL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160760}{#idx160772}{#idx160777}

MEM 0040h:000Ch - BASE I/O ADDRESS OF THIRD PARALLEL I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx160784}{#idx160797}

MEM 0040h:000Eh - BASE I/O ADDRESS OF FOURTH PARALLEL I/O PORTIBM PC Portable (uses same BIOS as XT) (pre-PS/2) {#idx160804}{#idx160826}

MEM 0040h:0010h - INSTALLED HARDWARE {#idx160983}{#idx160998}{#idx161001}

MEM 0040h:0015h - PCIBM PC, XTIBM PC XT - ADAPTER MEMORY SIZE IN KBYTES {#idx161071}{#idx161074}

MEM 0040h:003Eh - DISKETTE - RECALIBRATE STATUS {#idx161179}{#idx161182}{#idx161187}{#idx161190}

MEM 0040h:003Fh - DISKETTE - MOTOR STATUS {#idx161210}{#idx161213}{#idx161218}{#idx161221}

MEM 0040h:0042h - DISK - FLOPPY/HARD DRIVE STATUS/COMMAND BYTES {#idx161266}{#idx161269}{#idx161280}{#idx161283}{#idx161290}{#idx161293}{#idx161303}{#idx161306}{#idx161312}{#idx161315}{#idx161324}{#idx161327}{#idx161358}{#idx161361}

MEM 0040h:0063h - VIDEO - CRT CONTROLLER BASE I/O PORTIBM PC Portable (uses same BIOS as XT) ADDRESS {#idx161452}

MEM 0040h:0069h - CASSETTE (PCIBM PC only) - CASSETTE CRC REGISTER {#idx161524}{#idx161528}

MEM 0040h:006Bh - CASSETTE (PCIBM PC only) - LAST VALUE READ FROM CASSETTE {#idx161546}{#idx161549}

MEM 0040h:0076h - FIXED DISK - CONTROL BYTE {IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. documented only for XTIBM PC XT} {#idx161701}{#idx161704}

MEM 0040h:0076h - XTIBM PC XT: hard disk controller's I/O address (Western Digital) {#idx161712}{#idx161715}

MEM 0040h:0077h - FIXED DISK - I/O port offset {IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. documented only for XTIBM PC XT} {#idx161734}{#idx161737}

MEM 0040h:0082h - KEYBOARD BUFFER END+1 OFFSET FROM SEGMENT 40h (normally 3Eh) {#idx161849}{#idx161852}

MEM 0040h:008Bh - PCIBM PC, PCjr, PCIBM PC/XTIBM PC XT 11/8/82, Convertible - RESERVED {#idx161958}{#idx161961}

MEM 0040h:008Ch - FIXED DISK - CONTROLLER STATUS [not XTIBM PC XT] {#idx161983}{#idx161986}

MEM 0040h:008Dh - FIXED DISK - CONTROLLER ERROR STATUS [not XTIBM PC XT] {#idx161994}{#idx161997}

MEM 0040h:008Eh - FIXED DISK - INTERRUPT CONTROL [not XTIBM PC XT] {#idx162004}{#idx162007}

MEM 0040h:008Fh - DISKETTE CONTROLLER INFORMATION [not XTIBM PC XT] {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx162024}{#idx162027}

MEM 0040h:00D2h - 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. v1.00.12.AX1T - EPP BASE I/O PORTIBM PC Portable (uses same BIOS as XT) {#idx162479}

MEM 0040h:00D5h - 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. v1.00.12.AX1T - EPP - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) 0 CAPABILITIES {#idx162498}

MEM 0040h:00D6h - 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. v1.00.12.AX1T - EPP - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) 0 IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. {#idx162523}

MEM 0040h:00D6h - EHD floppy - AND-BITS TO ADJUST PORTIBM PC Portable (uses same BIOS as XT) ADDRESS {#idx162509}

MEM 0040h:00D7h - 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. v1.00.12.AX1T - EPP - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) 1 CAPABILITIES {#idx162545}

MEM 0040h:00D8h - 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. v1.00.12.AX1T - EPP - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) 1 IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. {#idx162569}

MEM 0040h:00DAh - Digiboard MV/4 - CURRENT PORTIBM PC Portable (uses same BIOS as XT) (used by VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. initializatn only) {#idx162594}

MEM 0040h:00DCh - 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. v1.00.12.AX1T - EPP - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) 0 MODE {#idx162633}{#idx162650}

MEM 0040h:00DFh - 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. v1.00.12.AX1T - EPP - PARALLEL PORTIBM PC Portable (uses same BIOS as XT) LOCK STATE {#idx162671}

MEM 0070h:016Ch - DR-DOS 7.02-7.03 - "DEVNO" AUX/PRN PORTIBM PC Portable (uses same BIOS as XT) ASSIGNMENTS {#idx162848}

MEM A000h:82E8h - S3 - MEMORY-MAPPED CURRENT Y POSITION REGISTER {#idx163315}

MEM A000h:83B0h - S3 - MEMORY-MAPPED VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. REGISTERS {#idx163328}{#idx163332}{#idx163336}

MEM A000h:8504h - S3 ViRGE - MEMORY-MAPPED SUBSYSTEM REGISTERS {#idx163358}{#idx163362}{#idx163367}

MEM A000h:FF00h - S3 - MEM-MAPPED "SCENIC HIGHWAY" (Local Periph. Bus) ACCESS {#idx163629}

MEM C000h:7FFCh - Matrox MGA Video Adapters - OFFSET OF PINS DATA STRUCTURE {#idx163865}

Notes {#idx132892}{#idx132895}{#idx167863}{#idx168163}{#idx168166}{#idx168190}{#idx168193}

PORTIBM PC Portable (uses same BIOS as XT) 0000-001F - DMAsee Direct Memory Access 1 - FIRST DIRECT MEMORY ACCESS CONTROLLER (8237) {#idx132920}{#idx132929}{#idx132933}{#idx132959}{#idx132962}

PORTIBM PC Portable (uses same BIOS as XT) 0010-001F - DMAsee Direct Memory Access CONTROLLER (8237) ON PS/2IBM PS/2, any model MODEL 60 & 80 {#idx133017}{#idx133028}{#idx133032}{#idx133036}{#idx133046}

PORTIBM PC Portable (uses same BIOS as XT) 0020-003F - PIC 1 - PROGRAMMABLE INTERRUPT CONTROLLER (8259A) {#idx133073}{#idx133082}{#idx133180}{#idx133186}

PORTIBM PC Portable (uses same BIOS as XT) 0022 - Intel 82439TX Chipset - Power Control register {#idx133192}{#idx133201}

PORTIBM PC Portable (uses same BIOS as XT) 0022 - Intel 82443BX - "PM2_CTL" ACPI Power Control 2 Register {#idx133207}{#idx133216}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0023 - CHIP SET DATA {#idx133232}{#idx133239}{#idx133248}{#idx133252}{#idx133257}{#idx133261}{#idx133265}{#idx133294}{#idx133301}{#idx133305}{#idx133309}{#idx133314}{#idx133318}{#idx133322}{#idx133332}{#idx133342}{#idx133346}{#idx133350}{#idx133356}{#idx133360}{#idx133364}{#idx133445}{#idx133455}{#idx133459}{#idx133465}{#idx133469}{#idx133473}{#idx133509}{#idx133518}{#idx133522}{#idx133526}{#idx133532}{#idx133539}{#idx133894}{#idx133957}{#idx133983}{#idx133992}{#idx133997}{#idx134041}{#idx134049}{#idx134054}{#idx134076}{#idx134084}{#idx134089}{#idx134138}{#idx134146}{#idx134151}{#idx134155}{#idx134159}{#idx134174}{#idx134182}{#idx134187}{#idx134191}{#idx134195}{#idx134199}{#idx134392}{#idx134404}{#idx134410}{#idx134414}{#idx134418}{#idx134422}{#idx134426}{#idx134430}{#idx134434}{#idx134474}{#idx134478}{#idx134483}{#idx134487}{#idx134536}{#idx134540}{#idx134544}{#idx134551}{#idx134572}{#idx134576}{#idx134580}{#idx134584}{#idx134588}{#idx134592}{#idx134596}{#idx134600}{#idx134635}{#idx134639}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0023 - Chips&Technologies 82C811/82C812 - CONFIGURATION REGISTERS {#idx134210}{#idx134218}{#idx134223}{#idx134227}{#idx134231}{#idx134268}{#idx134276}{#idx134281}{#idx134285}{#idx134289}{#idx134352}{#idx134356}{#idx134384}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0023 - Intel 82358DT 'Mongoose' EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). CHIPSET - 82359 DRAM(Dynamic Random Access Memory) RAM memory which essentially consists of a tiny capacitor for each bit of memory. Since capacitors do not hold a charge indefinitely, DRAM must be constantly refreshed to avoid losing its contents. Also, the process of reading the contents of the memory are destructive, meaning extra time must be spent restoring the contents of memory addresses which are accessed, so DRAM is slower than SRAM. See also Refresh, SRAM. CONTROLLER {#idx133544}{#idx133615}{#idx133619}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0025 - INTEL 82360SL CHIPSET (FOR 386SL) {#idx137351}

PORTIBM PC Portable (uses same BIOS as XT) 0022-002B - INTEL 82355, PART OF CHIPSET FOR 386sx {#idx137367}

PORTIBM PC Portable (uses same BIOS as XT) 0024-0025 - Intel 82091AA Advanced Integrated Peripheral {#idx137406}{#idx137412}{#idx137416}{#idx137420}{#idx137424}{#idx137428}{#idx137432}{#idx137436}

PORTIBM PC Portable (uses same BIOS as XT) 0024-0026 - PicoPower Vesuvius - V3-LS {#idx137440}{#idx137450}

PORTIBM PC Portable (uses same BIOS as XT) 0024-0027 - PicoPower Vesuvius - V1-LS {#idx137764}{#idx137774}

PORTIBM PC Portable (uses same BIOS as XT) 0024-0029 - HEADLAND HTK340 SHASTA 386/486 CHIPSET {#idx138722}{#idx138769}

PORTIBM PC Portable (uses same BIOS as XT) 0026-0027 - INTEL 82347 POWER MANAGEMENT PERIPHERAL {#idx138803}{#idx138809}{#idx138825}{#idx138834}{#idx138842}{#idx138853}{#idx138857}

PORTIBM PC Portable (uses same BIOS as XT) 0028-002A - 80486 "Deep Green" motherboard - ??? {#idx138862}{#idx138870}{#idx138875}{#idx138880}{#idx138886}{#idx138891}

PORTIBM PC Portable (uses same BIOS as XT) 002E-002F - DELL ENHANCED PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx138895}{#idx138899}{#idx138903}{#idx138907}{#idx138911}{#idx138919}{#idx138926}{#idx138937}{#idx138941}{#idx138945}{#idx138949}

PORTIBM PC Portable (uses same BIOS as XT) 0038-003F - PCIBM PC radio by CoZet Info Systems {#idx138954}

PORTIBM PC Portable (uses same BIOS as XT) 0040-005F - PIT - PROGRAMMABLE INTERVAL TIMER (8253, 8254) {#idx138964}{#idx138968}{#idx138971}{#idx138993}{#idx138997}{#idx138998}{#idx139001}{#idx139016}{#idx139019}{#idx139028}{#idx139031}

PORTIBM PC Portable (uses same BIOS as XT) 0044-0047 - Microchannel - PROGRAMMABLE INTERVAL TIMER 2 {#idx139084}{#idx139092}{#idx139096}

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 INTERVAL TIMER 2 {#idx139119}{#idx139128}{#idx139132}

PORTIBM PC Portable (uses same BIOS as XT) 0050-0052 - Olivetti M24 - 8530 SIO CHIP {#idx139141}{#idx139147}{#idx139159}

PORTIBM PC Portable (uses same BIOS as XT) 0060-006F - KEYBOARD CONTROLLER 804x (8041, 8042) (or PPI (8255) on PCIBM PC,XTIBM PC XT) {#idx139166}{#idx139173}{#idx139176}{#idx139177}{#idx139180}{#idx139192}{#idx139195}{#idx139220}{#idx139223}{#idx139227}{#idx139230}{#idx139231}{#idx139234}{#idx139249}{#idx139255}{#idx139319}{#idx139322}{#idx139339}{#idx139348}{#idx139393}{#idx139421}{#idx139459}{#idx139471}{#idx139474}{#idx139485}{#idx139507}{#idx139532}{#idx139533}{#idx139536}{#idx139551}{#idx139555}{#idx139559}{#idx139562}{#idx139583}{#idx139598}{#idx139622}{#idx139626}{#idx139637}{#idx139649}{#idx139653}{#idx139681}{#idx139690}{#idx139698}{#idx139710}{#idx139715}{#idx139736}{#idx139751}{#idx139769}{#idx139785}{#idx139791}{#idx139802}{#idx139807}{#idx139826}{#idx139832}{#idx139858}{#idx139876}{#idx139881}{#idx139900}{#idx139908}{#idx139930}{#idx139942}{#idx139971}{#idx139981}{#idx139986}{#idx140082}

PORTIBM PC Portable (uses same BIOS as XT) 0065 - AT&TAmerican Telephone and Telegraph 6300+ - HIGH/LOW CHIP SELECT {#idx140096}{#idx140103}

PORTIBM PC Portable (uses same BIOS as XT) 0065-0066 - Olivetti M24 {#idx140111}{#idx140116}{#idx140124}{#idx140134}

PORTIBM PC Portable (uses same BIOS as XT) 0066 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 4717 Magnetic Stripe Reader - ??? {#idx140149}{#idx140153}

PORTIBM PC Portable (uses same BIOS as XT) 0066-0067 - AT&TAmerican Telephone and Telegraph 6300+ - SYSTEM CONFIGURATION SWITCHES {#idx140141}

PORTIBM PC Portable (uses same BIOS as XT) 0068 - C&T CHIPSETS - TURBO MODE CONTROL {#idx140157}

PORTIBM PC Portable (uses same BIOS as XT) 0068-006F - HP Vectra Human Interface Link {#idx140170}{#idx140177}

PORTIBM PC Portable (uses same BIOS as XT) 0069 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 4717 Magnetic Stripe Reader - ??? {#idx140199}{#idx140203}

PORTIBM PC Portable (uses same BIOS as XT) 006B-006F - SSGA CONTROL REGISTERS {#idx140207}

PORTIBM PC Portable (uses same BIOS as XT) 0070-007F - CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information. See also Real-Time Clock./RTCsee Real-Time Clock (REAL TIME CLOCK) {#idx140217}{#idx140226}{#idx140227}{#idx140230}{#idx140239}{#idx140243}

PORTIBM PC Portable (uses same BIOS as XT) 0072 - Chips&Technologies 82C100 - NMIsee Non-Maskable Interrupt CONTROL {#idx140282}

PORTIBM PC Portable (uses same BIOS as XT) 0072-0075 - AMD-645 Peripheral Bus Controller - ACCESS TO EXTENDED CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. {#idx140289}{#idx140296}

PORTIBM PC Portable (uses same BIOS as XT) 0073 - Intel 82378IB ("Saturn"/"Neptune" chipsets) - MBOARD CONFIGURATION {#idx140311}{#idx140319}

PORTIBM PC Portable (uses same BIOS as XT) 0074-0076 - SECONDARY CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. (Compaq), NVRAMsee Non-Volatile RAM (IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911.) ACCESS {#idx140325}{#idx140330}

PORTIBM PC Portable (uses same BIOS as XT) 0075 - Intel 82378IB ("Saturn"/"Neptune" chipsets) - MBOARD CONFIGURATION {#idx140335}{#idx140343}{#idx140347}

PORTIBM PC Portable (uses same BIOS as XT) 0078 - HP-Vectra - HARD RESET: NMIsee Non-Maskable Interrupt ENABLE/DISABLE {#idx140352}{#idx140368}{#idx140385}

PORTIBM PC Portable (uses same BIOS as XT) 0078-007F - PCIBM PC radio by CoZet Info Systems {#idx140391}

PORTIBM PC Portable (uses same BIOS as XT) 007C-007D - HP-Vectra - PIC 3 - PROGRAMMABLE INTERRUPT CONTROLLER (8259) {#idx140400}{#idx140415}

PORTIBM PC Portable (uses same BIOS as XT) 007E - Chips&Technologies 82C100/110 - NMIsee Non-Maskable Interrupt STATUS {#idx140425}{#idx140433}{#idx140437}

PORTIBM PC Portable (uses same BIOS as XT) 007F - Chips&Technologies 82C100/110 - POWER CONTROL AND RESET {#idx140441}{#idx140452}{#idx140456}

PORTIBM PC Portable (uses same BIOS as XT) 0080 - MANUFACTURING DIAGNOSTICS PORTIBM PC Portable (uses same BIOS as XT) {#idx140460}{#idx140464}{#idx140960}

PORTIBM PC Portable (uses same BIOS as XT) 0080-008F - DMAsee Direct Memory Access PAGE REGISTERS (74612) {#idx141031}

PORTIBM PC Portable (uses same BIOS as XT) 0080-009F - Intel386sx CHIPSET 82231 {#idx141044}{#idx141050}{#idx141054}

PORTIBM PC Portable (uses same BIOS as XT) 0084 - Compaq POSTsee Power-On Self-Test Diagnostic {#idx141058}

PORTIBM PC Portable (uses same BIOS as XT) 0084 - 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). - SYNCHRONIZE BUS CYCLE {#idx141063}

PORTIBM PC Portable (uses same BIOS as XT) 0085-0086 - Intel "Triton" chipset - ??? {#idx141068}{#idx141073}

PORTIBM PC Portable (uses same BIOS as XT) 0090-009F - PS/2IBM PS/2, any model - POS (PROGRAMMABLE OPTION SELECT) {#idx141078}{#idx141107}

PORTIBM PC Portable (uses same BIOS as XT) 00A0 - XTIBM PC XT - NMIsee Non-Maskable Interrupt MASK REGISTER {#idx141241}{#idx141242}{#idx141245}{#idx141249}{#idx141250}{#idx141253}

PORTIBM PC Portable (uses same BIOS as XT) 00A0-00AF - PIC 2 - PROGRAMMABLE INTERRUPT CONTROLLER (8259A) {#idx141185}{#idx141194}{#idx141259}{#idx141267}{#idx141271}{#idx141272}{#idx141275}{#idx141281}

PORTIBM PC Portable (uses same BIOS as XT) 00A8-00A9 - Via VT82C496G "Pluto" - CONFIGURATION REGISTERS {#idx141285}{#idx141293}{#idx141857}

PORTIBM PC Portable (uses same BIOS as XT) 00A8-00AC - Via VT82C570M "Apollo Master" - CONFIGURATION REGISTERS {#idx141703}{#idx141711}

PORTIBM PC Portable (uses same BIOS as XT) 00B0-00BF - PCIBM PC radio by CoZet Info Systems {#idx141862}

PORTIBM PC Portable (uses same BIOS as XT) 00B2 - Intel chipsets - Advanced Power Management Control {#idx141872}{#idx141888}

PORTIBM PC Portable (uses same BIOS as XT) 00B3 - Intel chipsets - Advanced Power Management Status {#idx141893}{#idx141907}

PORTIBM PC Portable (uses same BIOS as XT) 00C0 - TI SN746496 programmable tone/noise generator (PCjr) {#idx141912}

PORTIBM PC Portable (uses same BIOS as XT) 00C0-00DF - DMAsee Direct Memory Access 2 - SECOND DIRECT MEMORY ACCESS CONTROLLER (8237) {#idx141918}

PORTIBM PC Portable (uses same BIOS as XT) 00E0-00E1 - CHIPSET FROM ACT {#idx141995}

PORTIBM PC Portable (uses same BIOS as XT) 00E0-00E7 - MICROCHANNEL {#idx142001}

PORTIBM PC Portable (uses same BIOS as XT) 00E0-00EF - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PSIBM PS/2, any model/1 CLOCK {#idx142059}

PORTIBM PC Portable (uses same BIOS as XT) 00E1 - STB PowerMEG - ??? {#idx142069}

PORTIBM PC Portable (uses same BIOS as XT) 00E2 - S3 Trio64V+ - 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. PORTIBM PC Portable (uses same BIOS as XT) {#idx142076}{#idx142082}{#idx142086}{#idx142090}{#idx142094}

PORTIBM PC Portable (uses same BIOS as XT) 00E8 - S3 Trio64V+ - 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. PORTIBM PC Portable (uses same BIOS as XT) {#idx142098}{#idx142104}{#idx142108}{#idx142112}{#idx142116}

PORTIBM PC Portable (uses same BIOS as XT) 00EB - Intel "Triton" chipset - ??? {#idx142120}{#idx142125}{#idx142130}{#idx142134}{#idx142144}

PORTIBM PC Portable (uses same BIOS as XT) 00EC-00ED - Compaq LTE Elite {#idx142148}

PORTIBM PC Portable (uses same BIOS as XT) 00ED - DUMMY PORTIBM PC Portable (uses same BIOS as XT) FOR DELAY??? {#idx142154}{#idx142158}{#idx142168}

PORTIBM PC Portable (uses same BIOS as XT) 00EF - Hyunday Super-NB386S (AMD386sx with Intel chipset) {#idx142172}

PORTIBM PC Portable (uses same BIOS as XT) 00F0-00F5 - PCjr Disk Controller {#idx142179}

PORTIBM PC Portable (uses same BIOS as XT) 00F0-00FF - MATH COPROCESSOR (8087..80387) {#idx142189}

PORTIBM PC Portable (uses same BIOS as XT) 00F9 - Compaq LTE Elite {#idx142202}

PORTIBM PC Portable (uses same BIOS as XT) 00F9-00FF - PCIBM PC radio by CoZet Info Systems {#idx142214}

PORTIBM PC Portable (uses same BIOS as XT) 00FB - Compaq LTE Elite {#idx142208}

PORTIBM PC Portable (uses same BIOS as XT) 0100 - 3COM 3C509 Ethernet card - ID port {#idx142224}{#idx142230}{#idx142234}

PORTIBM PC Portable (uses same BIOS as XT) 0100-0107 - PS/2IBM PS/2, any model POS (Programmable Option Select) {#idx142238}{#idx142249}{#idx142292}

PORTIBM PC Portable (uses same BIOS as XT) 0100-010F - CompaQ Tape drive adapter. alternate address at 0300 {#idx142301}

PORTIBM PC Portable (uses same BIOS as XT) 0102 - Chips & Technologies 64310 - GLOBAL ENABLE REGISTER {#idx142309}{#idx142316}

PORTIBM PC Portable (uses same BIOS as XT) 0106 - Chips & Technologies 64310 - MOTHERBOARD DISABLE REGISTER {#idx142330}{#idx142337}

PORTIBM PC Portable (uses same BIOS as XT) 0108-010F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PS/2IBM PS/2, any model - 8 digit LED info panel {#idx142356}

PORTIBM PC Portable (uses same BIOS as XT) 0110 - 3COM 3C509 Ethernet card - ID port (alternate address) {#idx142368}{#idx142375}{#idx142379}

PORTIBM PC Portable (uses same BIOS as XT) 0120 - 3COM 3C509 Ethernet card - ID port (alternate address) {#idx142383}{#idx142390}{#idx142394}

PORTIBM PC Portable (uses same BIOS as XT) 0130-0133 - Adaptec 154xB/154xC 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 {#idx142404}

PORTIBM PC Portable (uses same BIOS as XT) 0130-013F - CompaQ SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer. A host adapter connects the SCSI bus to the computer's own bus. See also ESDI, IDE. adapter. alternate address at 0330 {#idx142398}

PORTIBM PC Portable (uses same BIOS as XT) 0134-0137 - Adaptec 154xB/154xC 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 {#idx142410}

PORTIBM PC Portable (uses same BIOS as XT) 0138-013F - PCIBM PC radio by CoZet Info Systems {#idx142416}

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 {#idx142617}{#idx142625}

PORTIBM PC Portable (uses same BIOS as XT) 0140-014F - 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. (alternate Small Computer System Interface) adapter {#idx142426}{#idx142435}{#idx142501}

PORTIBM PC Portable (uses same BIOS as XT) 0140-0157 - RTCsee Real-Time Clock (alternate Real Time Clock for XTIBM PC XT) (1st at 0340-0357) {#idx142629}{#idx142632}{#idx142635}

PORTIBM PC Portable (uses same BIOS as XT) 0140-015F - Adaptec AHA-152x 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 {#idx142641}

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 {#idx142656}{#idx142664}

PORTIBM PC Portable (uses same BIOS as XT) 0150-015F - Xirlink/Relialogic XL-220/221 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 {#idx142646}{#idx142651}

PORTIBM PC Portable (uses same BIOS as XT) 015C-015D - Dell Enhanced Parallel Port {#idx142668}{#idx142674}{#idx142678}{#idx142682}

PORTIBM PC Portable (uses same BIOS as XT) 015F - ARTEC Handyscanner A400Z. alternate address at 35F. {#idx142687}

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 {#idx142702}{#idx142710}

PORTIBM PC Portable (uses same BIOS as XT) 0160-016F - Xirlink/Relialogic XL-220/221 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 {#idx142692}{#idx142697}

PORTIBM PC Portable (uses same BIOS as XT) 0168-016F - 4th (Quaternary) EIDE Controller {#idx142714}{#idx142721}{#idx142725}{#idx142729}

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 {#idx142733}{#idx142742}{#idx142746}{#idx142750}

PORTIBM PC Portable (uses same BIOS as XT) 0170-0177 - HDC 2 (2nd Fixed Disk Controller) (ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA., 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).) {#idx142759}{#idx142768}{#idx142772}{#idx142776}

PORTIBM PC Portable (uses same BIOS as XT) 0170-017F - 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 {#idx142790}{#idx142798}

PORTIBM PC Portable (uses same BIOS as XT) 0170-017F - Xirlink/Relialogic XL-220/221 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 {#idx142780}{#idx142785}

PORTIBM PC Portable (uses same BIOS as XT) 0178-0179 - Power Management {#idx142802}{#idx142807}

PORTIBM PC Portable (uses same BIOS as XT) 0178-017F - PCIBM PC radio by CoZet Info Systems {#idx142812}

PORTIBM PC Portable (uses same BIOS as XT) 01CE-01CF - ATI Mach32 video chipset - ??? {#idx142822}

PORTIBM PC Portable (uses same BIOS as XT) 01E8-01EF - Headland HL21 & Acer M5105 chipsets - SYSTEM CONTROL {#idx142832}{#idx142850}{#idx142857}{#idx142861}{#idx142865}

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 {#idx143308}{#idx143317}{#idx143321}{#idx143325}{#idx143330}

PORTIBM PC Portable (uses same BIOS as XT) 01F0-01F7 - HDC 1 (1st Fixed Disk Controller) (ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA., 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).) {#idx142869}{#idx142878}{#idx142882}

PORTIBM PC Portable (uses same BIOS as XT) 01F8 - ??? {#idx143398}

PORTIBM PC Portable (uses same BIOS as XT) 01F9-01FF - PCIBM PC radio by CoZet Info Systems {#idx143406}

PORTIBM PC Portable (uses same BIOS as XT) 0200 - Digidesign 'Session 8' HARD-DISK RECORDING SYSTEM {#idx143416}{#idx143422}

PORTIBM PC Portable (uses same BIOS as XT) 0200-020F - Game port reserved I/O address space {#idx143426}{#idx143438}{#idx143443}

PORTIBM PC Portable (uses same BIOS as XT) 0200-02FF - Sunshine uPW48, programmer for EPROM version CPU(Central Processing Unit) The microprocessor which executes programs on your computer.'s 8748/8749 {#idx143449}

PORTIBM PC Portable (uses same BIOS as XT) 0208-0209 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx143455}

PORTIBM PC Portable (uses same BIOS as XT) 0208-020A - Chips&Technologies 82C235 "SCAT" chipset - EMSsee Expanded Memory Specification PAGE REGISTERS {#idx143460}{#idx143468}{#idx143472}{#idx143476}

PORTIBM PC Portable (uses same BIOS as XT) 020C-020F - AIMS LAB PCIBM PC Radio {#idx143483}{#idx143490}{#idx143494}{#idx143501}

PORTIBM PC Portable (uses same BIOS as XT) 0210-0211 - Game Blaster {#idx143527}{#idx143532}

PORTIBM PC Portable (uses same BIOS as XT) 0210-0217 - Expansion unit (XTIBM PC XT) {#idx143506}{#idx143508}{#idx143511}

PORTIBM PC Portable (uses same BIOS as XT) 0218-0219 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx143536}

PORTIBM PC Portable (uses same BIOS as XT) 0218-021A - Chips&Technologies 82C235 "SCAT" chipset - EMSsee Expanded Memory Specification PAGE REGISTERS {#idx143541}{#idx143549}{#idx143553}{#idx143557}

PORTIBM PC Portable (uses same BIOS as XT) 0220-0223 - Sound Blaster / Adlib port (Stereo) {#idx143564}{#idx143572}

PORTIBM PC Portable (uses same BIOS as XT) 0220-0227 - Soundblaster PRO and SSB 16 ASP {#idx143578}

PORTIBM PC Portable (uses same BIOS as XT) 0220-0228 - C&T 82C570 CHIPSlink '3270' Protocol Controller {#idx143585}

PORTIBM PC Portable (uses same BIOS as XT) 0220-022F - Soundblaster PRO 2.0 {#idx143591}{#idx143598}{#idx143620}

PORTIBM PC Portable (uses same BIOS as XT) 022B - GI1904 Scanner Interface Adapter {#idx143652}{#idx143658}{#idx143662}{#idx143666}{#idx143670}{#idx143674}{#idx143678}{#idx143682}

PORTIBM PC Portable (uses same BIOS as XT) 022C - GS-IF Scanner Interface adapter {#idx143686}{#idx143692}{#idx143696}{#idx143700}{#idx143704}{#idx143708}{#idx143712}{#idx143716}{#idx143720}

PORTIBM PC Portable (uses same BIOS as XT) 022F - mc-soundmachine, mc 03-04/1992 - SPEECH I/O {#idx143725}{#idx143734}{#idx143738}{#idx143749}

PORTIBM PC Portable (uses same BIOS as XT) 0230-0233 - Adaptec 154xB/154xC 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. {#idx143753}

PORTIBM PC Portable (uses same BIOS as XT) 0234-0237 - Adaptec 154xB/154xC 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. {#idx143759}

PORTIBM PC Portable (uses same BIOS as XT) 0238-023B - Bus Mouse Port (secondary address) {#idx143770}{#idx143781}

PORTIBM PC Portable (uses same BIOS as XT) 0238-023F - COM port addresses on UniRAM card by German magazine c't {#idx143765}

PORTIBM PC Portable (uses same BIOS as XT) 023C-023F - Bus Mouse Port (primary address) {#idx143787}{#idx143799}

PORTIBM PC Portable (uses same BIOS as XT) 0240-024F - Gravis Ultra Sound by Advanced Gravis {#idx143805}{#idx143811}{#idx143815}{#idx143829}

PORTIBM PC Portable (uses same BIOS as XT) 0240-0257 - RTCsee Real-Time Clock (alternate Real Time Clock for XTIBM PC XT) (1st at 0340-0357) {#idx143866}{#idx143869}{#idx143872}

PORTIBM PC Portable (uses same BIOS as XT) 0258-0259 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx143879}{#idx143884}

PORTIBM PC Portable (uses same BIOS as XT) 0258-025F - Intel Above Board {#idx143896}

PORTIBM PC Portable (uses same BIOS as XT) 0260-0268 - LPTAbbreviation for Line PrinTer. port address on the UniRAM card by German magazine c't {#idx143901}

PORTIBM PC Portable (uses same BIOS as XT) 0268-0269 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx143905}

PORTIBM PC Portable (uses same BIOS as XT) 026B - GI1904 Scanner Interface Adapter {#idx143910}{#idx143916}{#idx143920}{#idx143924}{#idx143928}{#idx143932}{#idx143936}{#idx143940}

PORTIBM PC Portable (uses same BIOS as XT) 026C - GS-IF Scanner Interface adapter {#idx143944}{#idx143950}{#idx143954}{#idx143958}{#idx143962}{#idx143966}{#idx143970}{#idx143974}{#idx143978}

PORTIBM PC Portable (uses same BIOS as XT) 026E-026F - Dell Enhanced Parallel Port {#idx143983}{#idx143989}{#idx143993}{#idx143997}{#idx144002}{#idx144008}{#idx144012}{#idx144016}{#idx144020}{#idx144024}{#idx144028}{#idx144032}

PORTIBM PC Portable (uses same BIOS as XT) 0278 - Covox 'Speech Thing' COMPATIBLES {#idx144036}{#idx144041}{#idx144045}

PORTIBM PC Portable (uses same BIOS as XT) 0278-027A - PARALLEL PRINTER PORTIBM PC Portable (uses same BIOS as XT) (usually LPT1, sometimes LPT2) {#idx144053}{#idx144059}{#idx144066}{#idx144070}{#idx144074}{#idx144078}{#idx144086}{#idx144092}

PORTIBM PC Portable (uses same BIOS as XT) 0278-027F - Intel 82360SL/82091AA - EPP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx144096}{#idx144101}{#idx144105}{#idx144109}{#idx144113}{#idx144118}

PORTIBM PC Portable (uses same BIOS as XT) 0279 - Plug-and-Play - CONFIGURATION REGISTER {#idx144123}{#idx144128}

PORTIBM PC Portable (uses same BIOS as XT) 0280 - LCD(Liquid Crystal Display) display on Wyse 2108 PCIBM PC {#idx144181}

PORTIBM PC Portable (uses same BIOS as XT) 0280-0283 - Pro Audio Spectrum 16 (PAS16) {#idx144196}{#idx144202}{#idx144206}{#idx144210}{#idx144214}{#idx144218}{#idx144222}{#idx144226}

PORTIBM PC Portable (uses same BIOS as XT) 0280-0288 - non-standard COM port addresses (V20-XT by German magazine c't) {#idx144189}{#idx144192}

PORTIBM PC Portable (uses same BIOS as XT) 0284-0287 - Pro Audio Spectrum 16 (PAS16) {#idx144237}{#idx144243}{#idx144247}{#idx144251}{#idx144255}{#idx144259}{#idx144263}{#idx144267}

PORTIBM PC Portable (uses same BIOS as XT) 0288-028F - non-standard COM port addresses (V20-XT by German magazine c't) {#idx144230}{#idx144233}

PORTIBM PC Portable (uses same BIOS as XT) 0288-028F - Pro Audio Spectrum 16 (PAS16) {#idx144271}{#idx144277}{#idx144281}{#idx144285}{#idx144289}{#idx144293}{#idx144297}{#idx144301}

PORTIBM PC Portable (uses same BIOS as XT) 028C-028F - Pro Audio Spectrum 16 (PAS16) {#idx144305}{#idx144311}{#idx144315}{#idx144319}{#idx144323}{#idx144327}{#idx144331}{#idx144335}

PORTIBM PC Portable (uses same BIOS as XT) 02A0-02A7 - Sunshine EW-901BN, EW-904BN {#idx144339}

PORTIBM PC Portable (uses same BIOS as XT) 02A2-02A3 - MSM58321RS clock {#idx144350}

PORTIBM PC Portable (uses same BIOS as XT) 02A8-02A9 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx144356}

PORTIBM PC Portable (uses same BIOS as XT) 02AB - GI1904 Scanner Interface Adapter (default) {#idx144361}{#idx144367}{#idx144371}{#idx144375}{#idx144379}{#idx144383}{#idx144387}{#idx144391}

PORTIBM PC Portable (uses same BIOS as XT) 02AC - GS-IF Scanner Interface adapter {#idx144396}{#idx144402}{#idx144406}{#idx144410}{#idx144414}{#idx144418}{#idx144422}{#idx144426}{#idx144430}

PORTIBM PC Portable (uses same BIOS as XT) 02B0-02BF - Trantor 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 {#idx144435}

PORTIBM PC Portable (uses same BIOS as XT) 02B0-02DF - alternate 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., primary 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. at 03C0 {#idx144439}

PORTIBM PC Portable (uses same BIOS as XT) 02B8-02B9 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx144444}

PORTIBM PC Portable (uses same BIOS as XT) 02C0-02CF - 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. (2nd adapter) {#idx144464}{#idx144469}

PORTIBM PC Portable (uses same BIOS as XT) 02C0-02Cx - AST-clock {#idx144449}

PORTIBM PC Portable (uses same BIOS as XT) 02C0-02DF - XT-Real Time Clock 2 (default jumpered address) {#idx144455}{#idx144458}

PORTIBM PC Portable (uses same BIOS as XT) 02C6-02C9 - 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. - 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 (alternate address) {#idx144473}{#idx144479}{#idx144483}{#idx144487}

PORTIBM PC Portable (uses same BIOS as XT) 02D0-02DA - C&T 82C570 CHIPSlink '3270' Protocol Controller {#idx144491}

PORTIBM PC Portable (uses same BIOS as XT) 02E0-02E8 - LPTAbbreviation for Line PrinTer. port address on the UniRAM card by German magazine c't {#idx144497}

PORTIBM PC Portable (uses same BIOS as XT) 02E0-02EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx144501}{#idx144505}{#idx144508}{#idx144512}

PORTIBM PC Portable (uses same BIOS as XT) 02E8 - S3 86C928 video controller (ELSA Winner 1000) {#idx144523}

PORTIBM PC Portable (uses same BIOS as XT) 02E8-02E9 - Intel 82C212B "Neat" chipset - EMSsee Expanded Memory Specification emulation control {#idx144531}

PORTIBM PC Portable (uses same BIOS as XT) 02E8-02EF - serial port, same as 02F8, 03E8 and 03F8 (COM4) {#idx144536}{#idx144543}

PORTIBM PC Portable (uses same BIOS as XT) 02EA - S3 86C928 video controller (ELSA Winner 1000) {#idx144554}

PORTIBM PC Portable (uses same BIOS as XT) 02EB - GI1904 Scanner Interface Adapter {#idx144562}{#idx144568}{#idx144572}{#idx144576}{#idx144580}{#idx144584}{#idx144588}{#idx144592}

PORTIBM PC Portable (uses same BIOS as XT) 02EC - GS-IF Scanner Interface adapter {#idx144596}{#idx144602}{#idx144606}{#idx144610}{#idx144614}{#idx144618}{#idx144622}{#idx144626}{#idx144630}

PORTIBM PC Portable (uses same BIOS as XT) 02F0-02F8 - LPTAbbreviation for Line PrinTer. port address on the UniRAM card by German magazine c't {#idx144635}

PORTIBM PC Portable (uses same BIOS as XT) 02F8-02FF - serial port, same as 02E8, 03E8 and 03F8 (COM2) {#idx144639}

PORTIBM PC Portable (uses same BIOS as XT) 0300 - Award POSTsee Power-On Self-Test Diagnostic {#idx144658}{#idx144663}{#idx144703}

PORTIBM PC Portable (uses same BIOS as XT) 0300 - Digidesign 'Session 8' HARD-DISK RECORDING SYSTEM {#idx144667}{#idx144673}

PORTIBM PC Portable (uses same BIOS as XT) 0300-0301 - MPU-401 MIDI(Musical Instrument Digital Interface) A standardized interface for controlling musical instruments with a computer. UART(Universal Asyncronous Receiver/Transmitter) A peripheral device which converts a sequence of bytes into a serial bit stream at a programmable rate, and vice versa. This device is what makes an RS-232 serial port function. See also USART. {#idx144677}{#idx144682}{#idx144687}{#idx144691}

PORTIBM PC Portable (uses same BIOS as XT) 0300-0301 - Soundblaster 16 ASP MPU-Midi EMULATION {#idx144695}

PORTIBM PC Portable (uses same BIOS as XT) 0300-0303 - Panasonic 52x CD-ROM 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. Miniport {#idx144709}{#idx144715}{#idx144719}{#idx144723}{#idx144727}{#idx144731}

PORTIBM PC Portable (uses same BIOS as XT) 0300-030F - Philips CD-ROM player CM50 {#idx144735}{#idx144742}

PORTIBM PC Portable (uses same BIOS as XT) 0300-031F - 3com Ethernet adapters (default address) {#idx144750}{#idx144757}{#idx144763}{#idx144768}{#idx144781}{#idx144794}{#idx144799}{#idx144820}{#idx144825}

PORTIBM PC Portable (uses same BIOS as XT) 0300-031F - prototype cards {#idx145287}

PORTIBM PC Portable (uses same BIOS as XT) 030C-030F - AIMS LAB PCIBM PC Radio {#idx145293}{#idx145300}{#idx145304}{#idx145311}

PORTIBM PC Portable (uses same BIOS as XT) 0310-0311 - MPU-401 MIDI(Musical Instrument Digital Interface) A standardized interface for controlling musical instruments with a computer. UART(Universal Asyncronous Receiver/Transmitter) A peripheral device which converts a sequence of bytes into a serial bit stream at a programmable rate, and vice versa. This device is what makes an RS-232 serial port function. See also USART. {#idx145316}{#idx145321}{#idx145325}{#idx145330}

PORTIBM PC Portable (uses same BIOS as XT) 0310-031F - Philips CD-ROM player CM50 {#idx145334}

PORTIBM PC Portable (uses same BIOS as XT) 0320-0321 - MPU-401 MIDI(Musical Instrument Digital Interface) A standardized interface for controlling musical instruments with a computer. UART(Universal Asyncronous Receiver/Transmitter) A peripheral device which converts a sequence of bytes into a serial bit stream at a programmable rate, and vice versa. This device is what makes an RS-232 serial port function. See also USART. {#idx145341}{#idx145346}{#idx145350}{#idx145355}

PORTIBM PC Portable (uses same BIOS as XT) 0320-0323 - XTIBM PC XT HDC 1 (Hard Disk Controller) {#idx145359}{#idx145360}{#idx145363}{#idx145371}{#idx145376}{#idx145379}{#idx145383}{#idx145386}

PORTIBM PC Portable (uses same BIOS as XT) 0324-0327 - XTIBM PC XT HDC 2 (Hard Disk Controller) {#idx145395}{#idx145396}{#idx145399}

PORTIBM PC Portable (uses same BIOS as XT) 0328-032B - XTIBM PC XT HDC 3 (Hard Disk Controller) {#idx145407}{#idx145408}{#idx145411}

PORTIBM PC Portable (uses same BIOS as XT) 032B - GI1904 Scanner Interface Adapter {#idx145418}{#idx145424}{#idx145428}{#idx145432}{#idx145436}{#idx145440}{#idx145444}{#idx145448}

PORTIBM PC Portable (uses same BIOS as XT) 032C - GS-IF Scanner Interface adapter {#idx145452}{#idx145458}{#idx145462}{#idx145466}{#idx145470}{#idx145474}{#idx145478}{#idx145482}{#idx145486}

PORTIBM PC Portable (uses same BIOS as XT) 032C-032F - XTIBM PC XT HDC 4 (Hard Disk Controller) {#idx145491}{#idx145492}{#idx145495}{#idx145502}

PORTIBM PC Portable (uses same BIOS as XT) 0330-0331 - MPU-401 MIDI(Musical Instrument Digital Interface) A standardized interface for controlling musical instruments with a computer. UART(Universal Asyncronous Receiver/Transmitter) A peripheral device which converts a sequence of bytes into a serial bit stream at a programmable rate, and vice versa. This device is what makes an RS-232 serial port function. See also USART. {#idx145507}{#idx145512}{#idx145517}{#idx145521}{#idx145540}

PORTIBM PC Portable (uses same BIOS as XT) 0330-0333 - Adaptec 154xB/154xC 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 (default address) {#idx145584}

PORTIBM PC Portable (uses same BIOS as XT) 0330-033F - CompaQ SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer. A host adapter connects the SCSI bus to the computer's own bus. See also ESDI, IDE. adapter. alternate address at 0130 {#idx146111}

PORTIBM PC Portable (uses same BIOS as XT) 0330-033F - Philips CD-ROM player CM50 {#idx146117}

PORTIBM PC Portable (uses same BIOS as XT) 0334-0337 - Adaptec 154xB/154xC 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. {#idx146124}

PORTIBM PC Portable (uses same BIOS as XT) 0338 - AdLib soundblaster card {#idx146130}

PORTIBM PC Portable (uses same BIOS as XT) 0338-033F - COM port addresses on UniRAM card by German magazine c't {#idx146138}

PORTIBM PC Portable (uses same BIOS as XT) 0340 - Crystal Semiconductor CDB4922 evaluation board {#idx146159}

PORTIBM PC Portable (uses same BIOS as XT) 0340-034F - Gravis Ultra Sound by Advanced Gravis {#idx146164}{#idx146172}{#idx146176}

PORTIBM PC Portable (uses same BIOS as XT) 0340-034F - Philips CD-ROM player CM50 {#idx146143}{#idx146150}

PORTIBM PC Portable (uses same BIOS as XT) 0340-0357 - RTCsee Real-Time Clock (1st Real Time Clock for XTIBM PC XT) {#idx146297}{#idx146300}{#idx146303}{#idx146308}

PORTIBM PC Portable (uses same BIOS as XT) 0340-035F - Adaptec AHA-152x 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 {#idx146329}{#idx146335}

PORTIBM PC Portable (uses same BIOS as XT) 0348-0357 - DCA 3278 {#idx146603}

PORTIBM PC Portable (uses same BIOS as XT) 034C-034F - Gravis UltraMax by Advanced Gravis {#idx146608}

PORTIBM PC Portable (uses same BIOS as XT) 0352 - PC104 - WATCHDOG TIMER RESET {#idx146613}

PORTIBM PC Portable (uses same BIOS as XT) 035A-035B - Adaptec AH1520 jumper settings {#idx146626}

PORTIBM PC Portable (uses same BIOS as XT) 035F - ARTEC Handyscanner A400Z. alternate address at 15F. {#idx146644}

PORTIBM PC Portable (uses same BIOS as XT) 0360-0367 - PCIBM PC network (XTIBM PC XT only) {#idx146649}{#idx146654}{#idx146657}

PORTIBM PC Portable (uses same BIOS as XT) 0360-036F - PCIBM PC network (ATIBM PC AT) {#idx146661}{#idx146673}

PORTIBM PC Portable (uses same BIOS as XT) 036B - GI1904 Scanner Interface Adapter {#idx146740}{#idx146746}{#idx146750}{#idx146754}{#idx146758}{#idx146762}{#idx146766}{#idx146770}

PORTIBM PC Portable (uses same BIOS as XT) 036C - GS-IF Scanner Interface adapter {#idx146774}{#idx146780}{#idx146784}{#idx146788}{#idx146792}{#idx146796}{#idx146800}{#idx146804}{#idx146808}

PORTIBM PC Portable (uses same BIOS as XT) 0370-0377 - FDC 2 (2nd Floppy Disk Controller) first FDC at 03F0 {#idx146813}{#idx146828}

PORTIBM PC Portable (uses same BIOS as XT) 0378 - Covox 'Speech Thing' COMPATIBLE SPEECH OUTPUT {#idx146893}{#idx146898}{#idx146903}

PORTIBM PC Portable (uses same BIOS as XT) 0378-037A - PARALLEL PRINTER PORTIBM PC Portable (uses same BIOS as XT) (usually LPT2, sometimes LPT3) {#idx146911}{#idx146917}{#idx146924}{#idx146928}{#idx146932}{#idx146940}{#idx146946}

PORTIBM PC Portable (uses same BIOS as XT) 0378-037F - Intel 82360SL/82091AA - EPP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx146950}{#idx146955}{#idx146959}{#idx146963}{#idx146967}{#idx146972}

PORTIBM PC Portable (uses same BIOS as XT) 037C-037F - C&T F87000 Multi-Mode Peripheral Chip - OUTPUT PORTS {#idx146977}

PORTIBM PC Portable (uses same BIOS as XT) 0380-038C - 2nd SDLC (Synchronous Data Link Control) adapter {#idx146997}{#idx147021}{#idx147044}

PORTIBM PC Portable (uses same BIOS as XT) 0380-038F - 2nd BSC (Binary Synchronous Communication) adapter {#idx146988}{#idx146993}

PORTIBM PC Portable (uses same BIOS as XT) 0384-0387 - Pro Audio Spectrum 16 (PAS16) {#idx147132}{#idx147138}{#idx147142}{#idx147146}{#idx147150}{#idx147154}{#idx147158}{#idx147162}

PORTIBM PC Portable (uses same BIOS as XT) 0388-0389 - AdLib - MONO SOUND OUTPUT {#idx147166}{#idx147176}{#idx147180}{#idx147194}{#idx147198}{#idx147204}{#idx147246}

PORTIBM PC Portable (uses same BIOS as XT) 0388-038B - Pro Audio Spectrum 16 (PAS16) {#idx147262}{#idx147268}{#idx147272}{#idx147276}{#idx147280}{#idx147284}{#idx147288}{#idx147292}

PORTIBM PC Portable (uses same BIOS as XT) 0388-038B - Soundblaster 16 ASP FM-Chip {#idx147254}

PORTIBM PC Portable (uses same BIOS as XT) 038C-038F - Pro Audio Spectrum 16 (PAS16) {#idx147420}{#idx147426}{#idx147430}{#idx147434}{#idx147438}{#idx147442}{#idx147446}{#idx147450}

PORTIBM PC Portable (uses same BIOS as XT) 0390-0397 - Sunshine EW-901B, EW-904B {#idx147454}

PORTIBM PC Portable (uses same BIOS as XT) 0390-039F - Cluster adapter (ATIBM PC AT) {#idx147463}{#idx147469}{#idx147472}{#idx147473}{#idx147476}{#idx147477}{#idx147480}{#idx147481}{#idx147484}

PORTIBM PC Portable (uses same BIOS as XT) 0398-0399 - Dell Enhanced Parallel Port {#idx147488}{#idx147494}{#idx147498}{#idx147502}{#idx147507}{#idx147513}{#idx147517}{#idx147521}{#idx147525}{#idx147529}{#idx147533}{#idx147537}

PORTIBM PC Portable (uses same BIOS as XT) 03A0-03AC - 1st SDLC (Binary Synchronous Data Link Control adapter) {#idx147541}{#idx147549}

PORTIBM PC Portable (uses same BIOS as XT) 03A0-03AF - 1st BSC (Binary Synchronous Communication) adapter {#idx147553}{#idx147572}

PORTIBM PC Portable (uses same BIOS as XT) 03AB - GI1904 Scanner Interface Adapter {#idx147638}{#idx147644}{#idx147648}{#idx147652}{#idx147656}{#idx147660}{#idx147664}{#idx147668}{#idx147672}

PORTIBM PC Portable (uses same BIOS as XT) 03AC - GS-IF Scanner Interface adapter {#idx147676}{#idx147682}{#idx147686}{#idx147690}{#idx147694}{#idx147698}{#idx147702}{#idx147706}{#idx147710}

PORTIBM PC Portable (uses same BIOS as XT) 03B0-03BF - MDA(Monochrome Display Adapter) A text-only video adapter introduced together with the original IBMInternational Busiuness Machines PCIBM PC. See also CGAColor Graphics Adapter, HGC. (Monochrome Display Adapter based on 6845) {#idx147715}{#idx147727}{#idx147744}{#idx147748}{#idx147843}{#idx147852}{#idx147868}

PORTIBM PC Portable (uses same BIOS as XT) 03BC-03BF - PARALLEL PRINTER PORTIBM PC Portable (uses same BIOS as XT) (MDA(Monochrome Display Adapter) A text-only video adapter introduced together with the original IBMInternational Busiuness Machines PCIBM PC. See also CGAColor Graphics Adapter, HGC.'s LPT1) {#idx147891}{#idx147897}{#idx147902}{#idx147906}{#idx147910}{#idx147937}{#idx147949}

PORTIBM PC Portable (uses same BIOS as XT) 03BF - Hercules configuration switch register {#idx147961}

PORTIBM PC Portable (uses same BIOS as XT) 03C0-03C1 - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. - ATTRIBUTE CONTROLLER {#idx147974}{#idx147981}{#idx147985}{#idx147989}{#idx147993}

PORTIBM PC Portable (uses same BIOS as XT) 03C0-03C7 - Sunshine EW-901, EW-901A, EW-904, EW-904A {#idx148080}

PORTIBM PC Portable (uses same BIOS as XT) 03C2-03CF - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. - MISCELLANEOUS REGISTERS {#idx148089}{#idx148095}{#idx148099}{#idx148103}{#idx148107}{#idx148111}{#idx148115}{#idx148122}

PORTIBM PC Portable (uses same BIOS as XT) 03C4-03C5 - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. - SEQUENCER REGISTERS {#idx148157}{#idx148163}{#idx148167}{#idx148171}{#idx148175}{#idx148179}{#idx148183}{#idx148187}{#idx148191}{#idx148195}{#idx148235}{#idx148243}{#idx148247}{#idx148251}{#idx148318}{#idx148326}{#idx148330}{#idx148334}{#idx148372}{#idx148380}{#idx148384}{#idx148388}{#idx148392}{#idx148470}{#idx148500}{#idx148508}{#idx148512}{#idx148516}

PORTIBM PC Portable (uses same BIOS as XT) 03C6-03C9 - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./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. - 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 {#idx148533}{#idx148538}{#idx148542}{#idx148546}{#idx148550}{#idx148554}{#idx148558}{#idx148562}{#idx148566}{#idx148570}

PORTIBM PC Portable (uses same BIOS as XT) 03CA-03CD - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./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. - GRAPHICS POSITION {#idx148633}{#idx148638}{#idx148642}{#idx148646}{#idx148650}{#idx148654}{#idx148658}{#idx148662}{#idx148666}{#idx148672}{#idx148676}{#idx148682}

PORTIBM PC Portable (uses same BIOS as XT) 03CE-03CF - EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers./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. - GRAPHICS CONTROLLER REGISTERS {#idx148687}{#idx148694}{#idx148698}{#idx148702}{#idx148706}{#idx148710}{#idx148714}{#idx148718}{#idx148722}{#idx148773}{#idx148781}{#idx148832}

PORTIBM PC Portable (uses same BIOS as XT) 03D0-03D3 - CGAColor Graphics Adapter(Color/Graphics Adapter) One of the two video display boards introduced together with the original IBMInternational Busiuness Machines PCIBM PC. See also HGC, MDA. (Color Graphics Adapter) - MIRRORS OF 03D4/03D5 {#idx148848}{#idx148855}{#idx148859}{#idx148863}{#idx148867}

PORTIBM PC Portable (uses same BIOS as XT) 03D8-03DF - COLOR VIDEO - CRT MODE AND STATUS REGISTERS {#idx150424}{#idx150454}{#idx150497}{#idx150503}{#idx150507}{#idx150514}{#idx150521}

PORTIBM PC Portable (uses same BIOS as XT) 03E0-03E1 - Cirrus Logic CL-PD6710/6722/6729 - PC-CARD HOST ADAPTER {#idx150613}{#idx150627}

PORTIBM PC Portable (uses same BIOS as XT) 03E0-03E1 - OPTi 82C824 - CardBus Bridge registers {#idx150592}{#idx150599}{#idx150603}{#idx150607}

PORTIBM PC Portable (uses same BIOS as XT) 03E0-03E7 - LPTAbbreviation for Line PrinTer. port address on the UniRAM card by German magazine c't {#idx150993}{#idx150997}{#idx151001}{#idx151005}{#idx151009}{#idx151013}{#idx151017}{#idx151021}{#idx151025}{#idx151030}{#idx151034}{#idx151038}{#idx151042}{#idx151046}{#idx151050}{#idx151054}{#idx151058}

PORTIBM PC Portable (uses same BIOS as XT) 03E2-03E3 - OPTi 82C824 - CardBus Bridge registers {#idx151062}{#idx151069}{#idx151073}{#idx151077}

PORTIBM PC Portable (uses same BIOS as XT) 03EB - GI1904 Scanner Interface Adapter {#idx151164}{#idx151170}{#idx151174}{#idx151178}{#idx151182}{#idx151186}{#idx151190}{#idx151194}

PORTIBM PC Portable (uses same BIOS as XT) 03EC - GS-IF Scanner Interface adapter {#idx151198}{#idx151204}{#idx151208}{#idx151212}{#idx151216}{#idx151220}{#idx151224}{#idx151228}{#idx151232}

PORTIBM PC Portable (uses same BIOS as XT) 03F0-03F1 - PCTech RZ1000 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 {#idx151629}{#idx151640}{#idx151644}{#idx151648}

PORTIBM PC Portable (uses same BIOS as XT) 03F0-03F7 - FDC 1 (1st Floppy Disk Controller) second FDC at 0370 {#idx151237}{#idx151252}{#idx151310}

PORTIBM PC Portable (uses same BIOS as XT) 03F8-03FF - Serial port (8250,8250A,8251,16450,16550,16550A,etc.) COM1 {#idx151654}{#idx151664}{#idx151668}{#idx151674}{#idx151685}{#idx151688}

PORTIBM PC Portable (uses same BIOS as XT) 0401-040B - 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). DMAsee Direct Memory Access Controller {#idx151889}{#idx151894}{#idx151898}{#idx151907}

PORTIBM PC Portable (uses same BIOS as XT) 040A-043F - Intel 82378ZB embedded DMAsee Direct Memory Access controller {#idx151929}{#idx151934}

PORTIBM PC Portable (uses same BIOS as XT) 040D-040F - EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). - Intel 82357 {#idx151972}

PORTIBM PC Portable (uses same BIOS as XT) 0461-0462 - 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). NMIsee Non-Maskable Interrupt CONTROL {#idx151979}

PORTIBM PC Portable (uses same BIOS as XT) 0464-0465 - 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). BUS MASTER STATUS {#idx152001}

PORTIBM PC Portable (uses same BIOS as XT) 0481-048B - 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). DMAsee Direct Memory Access page registers {#idx152010}{#idx152019}{#idx152023}

PORTIBM PC Portable (uses same BIOS as XT) 04C6-04CF - 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). DMAsee Direct Memory Access count registers {#idx152027}{#idx152032}{#idx152036}{#idx152040}

PORTIBM PC Portable (uses same BIOS as XT) 04D0-04D1 - 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). IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. control {#idx152044}{#idx152052}

PORTIBM PC Portable (uses same BIOS as XT) 04D4-04D6 - 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). DMAsee Direct Memory Access control {#idx152080}{#idx152085}{#idx152091}{#idx152095}{#idx152100}

PORTIBM PC Portable (uses same BIOS as XT) 04E0-04FF - 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). DMAsee Direct Memory Access stop registers {#idx152113}{#idx152118}

PORTIBM PC Portable (uses same BIOS as XT) 0530-0533 - Gravis Ultra Sound Daughter Card by Advanced Gravis {#idx152122}{#idx152128}{#idx152132}{#idx152136}{#idx152140}{#idx152144}{#idx152151}

PORTIBM PC Portable (uses same BIOS as XT) 0530-0537 - Windows Sound System ("WSS") (default address) {#idx152156}{#idx152165}{#idx152169}{#idx152173}{#idx152177}{#idx152186}{#idx152190}{#idx152194}{#idx152200}{#idx152243}{#idx152252}{#idx152256}{#idx152261}{#idx152285}{#idx152292}{#idx152304}{#idx152318}

PORTIBM PC Portable (uses same BIOS as XT) 05FB - QUAD EMS+ - "QEMS_RESET" - RESET EMSsee Expanded Memory Specification??? {#idx152432}{#idx152441}{#idx152445}

PORTIBM PC Portable (uses same BIOS as XT) 0601 - Headland HL21, Acer M5105 chipsets - SYSTEM CONTROL {#idx152449}

PORTIBM PC Portable (uses same BIOS as XT) 0604-0607 - Gravis Ultra Sound Daughter Card by Advanced Gravis {#idx152475}{#idx152481}{#idx152485}{#idx152489}{#idx152493}

PORTIBM PC Portable (uses same BIOS as XT) 0604-060B - Windows Sound System {#idx152497}{#idx152504}{#idx152508}{#idx152512}{#idx152516}{#idx152520}

PORTIBM PC Portable (uses same BIOS as XT) 0620-0627 - PCIBM PC network (adapter 1) {#idx152526}

PORTIBM PC Portable (uses same BIOS as XT) 063E-063F - WINTEL.VXD - 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. {#idx152540}{#idx152561}

PORTIBM PC Portable (uses same BIOS as XT) 0678-067A - Intel 82091AA - ECP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx152571}{#idx152576}{#idx152580}{#idx152584}{#idx152588}{#idx152592}{#idx152596}{#idx152615}{#idx152624}{#idx152630}{#idx152641}

PORTIBM PC Portable (uses same BIOS as XT) 0680-0681 - Microchannel POSTsee Power-On Self-Test Diagnostic (write only) {#idx152693}

PORTIBM PC Portable (uses same BIOS as XT) 06A0-06A8 - non-standard COM port addresses {#idx152701}{#idx152704}

PORTIBM PC Portable (uses same BIOS as XT) 06A8-06AF - non-standard COM port addresses {#idx152708}{#idx152711}

PORTIBM PC Portable (uses same BIOS as XT) 06E2-06E3 - data aquisition (adapter 1) {#idx152715}

PORTIBM PC Portable (uses same BIOS as XT) 06E8 - S3 86C928 video controller (ELSA Winner 1000) {#idx152721}

PORTIBM PC Portable (uses same BIOS as XT) 06E8-06EF - 8514/A and compatible (e.g. ATI Graphics Ultra) - HORZ DISPLYD {#idx152729}{#idx152738}{#idx152742}{#idx152746}{#idx152750}

PORTIBM PC Portable (uses same BIOS as XT) 0746 - Gravis Ultra Sound by Advanced Gravis - BOARD VERSION / MIXER {#idx152757}{#idx152764}{#idx152768}

PORTIBM PC Portable (uses same BIOS as XT) 0778-077A - Intel 82091AA - ECP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx152773}{#idx152778}{#idx152782}{#idx152786}{#idx152790}{#idx152794}{#idx152798}

PORTIBM PC Portable (uses same BIOS as XT) 0790-0793 - cluster (adapter 1) {#idx152807}

PORTIBM PC Portable (uses same BIOS as XT) 07BC-07BE - Intel 82091AA - ECP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx152812}{#idx152817}{#idx152821}{#idx152825}{#idx152829}

PORTIBM PC Portable (uses same BIOS as XT) 07FB - QUAD EMS+ - "QEMS_INCR" - ??? {#idx152838}{#idx152845}{#idx152849}

PORTIBM PC Portable (uses same BIOS as XT) 0800-08FF - I/O port access registers for extended CMOS RAMA small amount (typically 64 or 128 bytes) of memory in the system's real-time clock chip that is preserved by the clock's battery and is used for storing configuration information. See also Real-Time Clock. or SRAM(Static Random Access Memory) RAM which typically consists of one flip-flop per bit of memory. Unlike DRAMs, static RAM retains its contents as long as power is applied. Because there is no need to refresh the contents of memory addresses which are read, SRAM is faster than DRAM, but it is more expensive and typically is available in much smaller sizes than DRAM because each bit occupies more space on the chip. See also DRAM. {#idx152853}

PORTIBM PC Portable (uses same BIOS as XT) 0800-08FF - reserved for EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). system motherboard {#idx152861}

PORTIBM PC Portable (uses same BIOS as XT) 0A20-0A23 - Token Ring (adapter 1) {#idx152867}

PORTIBM PC Portable (uses same BIOS as XT) 0A79 - Plug-and-Play - WRITE DATA PORTIBM PC Portable (uses same BIOS as XT) {#idx152875}{#idx152882}{#idx152890}

PORTIBM PC Portable (uses same BIOS as XT) 0AD6-0AD7 - Chips & Technologies PCIBM PC Video (82C9001A) - CONTROL REGISTERS {#idx152896}{#idx152915}

PORTIBM PC Portable (uses same BIOS as XT) 0AE2-0AE3 - cluster (adapter 2) {#idx153253}

PORTIBM PC Portable (uses same BIOS as XT) 0AE8 - S3 86C928 video controller (ELSA Winner 1000) {#idx153258}

PORTIBM PC Portable (uses same BIOS as XT) 0AE8-0AEF - 8514/A and compatible (e.g. ATI Graphics Ultra) - HSYNC START {#idx153266}

PORTIBM PC Portable (uses same BIOS as XT) 0B90-0B93 - cluster (adapter 2) {#idx153279}

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 {#idx153284}

PORTIBM PC Portable (uses same BIOS as XT) 0C00-0CFF - reserved for EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). system motherboard {#idx153291}

PORTIBM PC Portable (uses same BIOS as XT) 0C7C - bit) 7-4 (Compaq) {#idx153297}

PORTIBM PC Portable (uses same BIOS as XT) 0C80-0C83 - EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). system board ID registers {#idx153302}

PORTIBM PC Portable (uses same BIOS as XT) 0CF8-0CFA - PCI Configuration Mechanism 2 - Configuration Registers {#idx153335}{#idx153351}{#idx153355}{#idx153360}

PORTIBM PC Portable (uses same BIOS as XT) 0CF8-0CFF - PCI Configuration Mechanism 1 - Configuration Registers {#idx153310}{#idx153318}{#idx153322}

PORTIBM PC Portable (uses same BIOS as XT) 0CF9 - Intel chipsets - TURBO/RESET CONTROL REGISTER {#idx153371}{#idx153384}{#idx153403}

PORTIBM PC Portable (uses same BIOS as XT) 0CFB - Intel 82434NX (Neptune) - PCI MECHANISM CONTROL REGISTER {#idx153407}{#idx153417}

PORTIBM PC Portable (uses same BIOS as XT) 0E80-0E83 - Gravis Ultra Sound Daughter Card by Advanced Gravis {#idx153433}{#idx153439}{#idx153443}{#idx153447}{#idx153451}

PORTIBM PC Portable (uses same BIOS as XT) 0E80-0E87 - Windows Sound System {#idx153455}{#idx153462}{#idx153466}{#idx153470}{#idx153474}{#idx153478}

PORTIBM PC Portable (uses same BIOS as XT) 0EE8 - S3 86C928 video controller (ELSA Winner 1000) {#idx153484}

PORTIBM PC Portable (uses same BIOS as XT) 0EE8-0EEF - 8514/A and compatible (e.g. ATI Graphics Ultra) - HSYNC WIDTH {#idx153492}

PORTIBM PC Portable (uses same BIOS as XT) 0F40-0F43 - Gravis Ultra Sound Daughter Card by Advanced Gravis {#idx153503}{#idx153509}{#idx153513}{#idx153517}{#idx153521}

PORTIBM PC Portable (uses same BIOS as XT) 0F40-0F47 - Windows Sound System {#idx153525}{#idx153532}{#idx153536}{#idx153540}{#idx153544}{#idx153548}

PORTIBM PC Portable (uses same BIOS as XT) 0F8D - OPTi 82C750 (Vendetta) - AUDIO MODULE BASE ADDRESS REGISTER {#idx153554}{#idx153562}{#idx153566}

PORTIBM PC Portable (uses same BIOS as XT) 0F8E-0F8F - OPTi "Vendetta" (82C750) CHIPSET - Audio Module Data Registers {#idx153576}{#idx153586}{#idx153590}

PORTIBM PC Portable (uses same BIOS as XT) 0xx0-0xxF - Intel 82595TX - ISA(Industry-Standard Architecture) The expansion bus used by the IBMInternational Busiuness Machines PCIBM PC/ATIBM PC AT. See also EISA./PCMCIA Ethernet Controller {#idx153758}

PORTIBM PC Portable (uses same BIOS as XT) 1000-10FF - available for 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). slot 1 {#idx153834}

PORTIBM PC Portable (uses same BIOS as XT) 1010 - Wang PCIBM PC - SCREEN 1 CONFIGURATION PORTIBM PC Portable (uses same BIOS as XT) {#idx153838}{#idx153845}{#idx153849}{#idx153853}{#idx153857}

PORTIBM PC Portable (uses same BIOS as XT) 1020 - Wang PCIBM PC - SCREEN 2 CONFIGURATION PORTIBM PC Portable (uses same BIOS as XT) {#idx153864}{#idx153871}{#idx153875}{#idx153879}{#idx153883}

PORTIBM PC Portable (uses same BIOS as XT) 1030 - Wang PCIBM PC - SCREEN 3 CONFIGURATION PORTIBM PC Portable (uses same BIOS as XT) {#idx153890}{#idx153897}{#idx153901}{#idx153905}{#idx153909}

PORTIBM PC Portable (uses same BIOS as XT) 1040 - Wang PCIBM PC - SCREEN 4 CONFIGURATION PORTIBM PC Portable (uses same BIOS as XT) {#idx153916}{#idx153923}{#idx153927}{#idx153931}{#idx153935}

PORTIBM PC Portable (uses same BIOS as XT) 12E8-12EF - 8514/A and compatible (e.g. ATI Graphics Ultra) - VERT TOTAL {#idx153942}

PORTIBM PC Portable (uses same BIOS as XT) 12EE - ATI Mach32 - CONFIGURATION STATUS 0 {#idx153953}{#idx153962}{#idx153967}{#idx153972}

PORTIBM PC Portable (uses same BIOS as XT) 1390-1393 - cluster (adapter 3) {#idx153977}

PORTIBM PC Portable (uses same BIOS as XT) 13C6 - Compaq - VIDEO STATUS??? {#idx153982}

PORTIBM PC Portable (uses same BIOS as XT) 1400-14FF - available for 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). slot 1 {#idx154005}

PORTIBM PC Portable (uses same BIOS as XT) 16E8-16EF - 8514/A and compatible (e.g. ATI Graphics Ultra) - VERT DISPLYD {#idx154009}

PORTIBM PC Portable (uses same BIOS as XT) 16EE - ATI Mach32 - CONFIGURATION STATUS 1 {#idx154021}{#idx154030}{#idx154035}{#idx154040}

PORTIBM PC Portable (uses same BIOS as XT) 1800-18FF - available for 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). slot 1 {#idx154045}

PORTIBM PC Portable (uses same BIOS as XT) 1AE8-1AEF - 8514/A and compatible (e.g. ATI Graphics Ultra) - VSYNC START {#idx154049}

PORTIBM PC Portable (uses same BIOS as XT) 1C00-1CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 1 {#idx154066}{#idx154086}{#idx154090}

PORTIBM PC Portable (uses same BIOS as XT) 1C00-1CFF - available for 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). slot 1 {#idx154062}

PORTIBM PC Portable (uses same BIOS as XT) 1C65 - Compaq Contura Aero {#idx154570}{#idx154577}

PORTIBM PC Portable (uses same BIOS as XT) 1C80-1C83 - 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). board product ID (board in slot 1) {#idx154596}

PORTIBM PC Portable (uses same BIOS as XT) 1C80-1C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 1 {#idx154583}

PORTIBM PC Portable (uses same BIOS as XT) 1C84 - 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). CONFIGURATION FLAGS (board in slot 1) {#idx154603}

PORTIBM PC Portable (uses same BIOS as XT) 1C85 - Compaq Qvision 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). - Virtual Controller ID {#idx154617}

PORTIBM PC Portable (uses same BIOS as XT) 1C85 - 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). SETUP CONTROL (board in slot 1) {#idx154611}

PORTIBM PC Portable (uses same BIOS as XT) 1C88-1C8F - 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 (board in slot 1) {#idx154625}

PORTIBM PC Portable (uses same BIOS as XT) 1EE8-1EEF - 8514/A and compatible (e.g. ATI Graphics Ultra) - VSYNC WIDTH {#idx154631}

PORTIBM PC Portable (uses same BIOS as XT) 1EEC - Mach64 - ??? {#idx154642}

PORTIBM PC Portable (uses same BIOS as XT) 2000-20FF - available for 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). slot 2 {#idx154650}

PORTIBM PC Portable (uses same BIOS as XT) 2065 - Compaq Contura Aero {#idx154654}{#idx154661}{#idx154666}

PORTIBM PC Portable (uses same BIOS as XT) 2100 - XGA(Extended Graphics Array) Video Operating Mode Register {#idx154671}

PORTIBM PC Portable (uses same BIOS as XT) 2101 - XGA(Extended Graphics Array) Video Aperture Control {#idx154678}

PORTIBM PC Portable (uses same BIOS as XT) 2102-2103 - XGA(Extended Graphics Array) ??? {#idx154686}

PORTIBM PC Portable (uses same BIOS as XT) 2104 - XGA(Extended Graphics Array) Video Interrupt Enable {#idx154692}

PORTIBM PC Portable (uses same BIOS as XT) 2105 - XGA(Extended Graphics Array) Video Interrupt Status {#idx154701}

PORTIBM PC Portable (uses same BIOS as XT) 2106 - XGA(Extended Graphics Array) Video Virtual Memory Control {#idx154710}

PORTIBM PC Portable (uses same BIOS as XT) 2107 - XGA(Extended Graphics Array) Video Virtual Memory Interrupt Status {#idx154719}

PORTIBM PC Portable (uses same BIOS as XT) 2108 - XGA(Extended Graphics Array) Video Aperture Index {#idx154729}

PORTIBM PC Portable (uses same BIOS as XT) 2109 - XGA(Extended Graphics Array) Video Memory Access Mode {#idx154736}

PORTIBM PC Portable (uses same BIOS as XT) 210A - XGA(Extended Graphics Array) Video Index for Data {#idx154744}

PORTIBM PC Portable (uses same BIOS as XT) 210B - XGA(Extended Graphics Array) Video Data (byte) {#idx154751}

PORTIBM PC Portable (uses same BIOS as XT) 210C-210F - XGA(Extended Graphics Array) Video Data (word/dword) {#idx154759}

PORTIBM PC Portable (uses same BIOS as XT) 2110-211F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (second installed) {#idx154770}

PORTIBM PC Portable (uses same BIOS as XT) 2120-212F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (third installed) {#idx154778}

PORTIBM PC Portable (uses same BIOS as XT) 2130-213F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (fourth installed) {#idx154786}

PORTIBM PC Portable (uses same BIOS as XT) 2140-214F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (fifth installed) {#idx154794}

PORTIBM PC Portable (uses same BIOS as XT) 2150-215F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (sixth installed) {#idx154802}

PORTIBM PC Portable (uses same BIOS as XT) 2160-216F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (seventh installed) {#idx154810}

PORTIBM PC Portable (uses same BIOS as XT) 2170-217F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. XGA(Extended Graphics Array) (eXtended Graphics Adapter 8514/A) (eighth installed) {#idx154819}

PORTIBM PC Portable (uses same BIOS as XT) 217A-217B - ET4000/W32 CRTC-B/Sprite {#idx154828}

PORTIBM PC Portable (uses same BIOS as XT) 22E8-22EF - 8514/A and compatible (e.g. ATI Graphics Ultra) - DISPLAY CTRL {#idx154855}

PORTIBM PC Portable (uses same BIOS as XT) 2315 - QUAD EMS+ - "QEMS_BOARD1" - ??? {#idx154868}{#idx154875}{#idx154879}{#idx154883}

PORTIBM PC Portable (uses same BIOS as XT) 2316 - QUAD EMS+ - "QEMS_BOARD2" - ??? {#idx154887}{#idx154894}{#idx154898}{#idx154902}{#idx154906}

PORTIBM PC Portable (uses same BIOS as XT) 2317 - QUAD EMS+ - "QEMS_BOARD3" - ??? {#idx154910}{#idx154917}{#idx154921}{#idx154925}{#idx154929}

PORTIBM PC Portable (uses same BIOS as XT) 2390-2393 - cluster (adapter 4) {#idx154933}

PORTIBM PC Portable (uses same BIOS as XT) 23C0-23CF - Compaq QVision - BitBLT engine {#idx154938}

PORTIBM PC Portable (uses same BIOS as XT) 2400-24FF - available for 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). slot 2 {#idx154946}

PORTIBM PC Portable (uses same BIOS as XT) 2465 - Compaq Contura Aero {#idx154950}{#idx154957}{#idx154962}

PORTIBM PC Portable (uses same BIOS as XT) 2714 - QUAD EMS+ - "QEMS_BOARD4" - ??? {#idx154970}{#idx154977}{#idx154981}{#idx154985}

PORTIBM PC Portable (uses same BIOS as XT) 2715 - QUAD EMS+ - "QEMS_BOARD5" - ??? {#idx154989}{#idx154996}{#idx155000}{#idx155004}{#idx155008}

PORTIBM PC Portable (uses same BIOS as XT) 2716 - QUAD EMS+ - "QEMS_BOARD6" - ??? {#idx155012}{#idx155019}{#idx155023}{#idx155027}{#idx155031}

PORTIBM PC Portable (uses same BIOS as XT) 2717 - QUAD EMS+ - "QEMS_BOARD7" - ??? {#idx155035}{#idx155042}{#idx155046}{#idx155050}

PORTIBM PC Portable (uses same BIOS as XT) 27C6 - Compaq LTE Lite - LCD(Liquid Crystal Display) TIMEOUT {#idx155054}

PORTIBM PC Portable (uses same BIOS as XT) 2800-28FF - available for 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). slot 2 {#idx155061}

PORTIBM PC Portable (uses same BIOS as XT) 28E9 - 8514/A - WD Escape Functions {#idx155065}

PORTIBM PC Portable (uses same BIOS as XT) 2C00-2CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 2 {#idx155071}{#idx155076}{#idx155080}

PORTIBM PC Portable (uses same BIOS as XT) 2C80-2C83 - 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). board product ID (board in slot 2) {#idx155097}{#idx155103}

PORTIBM PC Portable (uses same BIOS as XT) 2C80-2C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 2 {#idx155084}{#idx155089}{#idx155093}

PORTIBM PC Portable (uses same BIOS as XT) 2C84 - 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). CONFIGURATION FLAGS (board in slot 2) {#idx155107}

PORTIBM PC Portable (uses same BIOS as XT) 3000-30FF - available for 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). slot 3 {#idx155112}

PORTIBM PC Portable (uses same BIOS as XT) 3220-3227 - serial port 3, description same as 03F8 {#idx155116}

PORTIBM PC Portable (uses same BIOS as XT) 3228-322F - serial port 4, description same as 03F8 {#idx155124}

PORTIBM PC Portable (uses same BIOS as XT) 33C0-33CF - Compaq QVision - BitBLT engine {#idx155132}

PORTIBM PC Portable (uses same BIOS as XT) 3400-34FF - available for 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). slot 3 {#idx155140}

PORTIBM PC Portable (uses same BIOS as XT) 3510-3513 - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. primary harddisk controller {#idx155144}{#idx155149}{#idx155153}{#idx155157}{#idx155161}

PORTIBM PC Portable (uses same BIOS as XT) 3518-351B - ESDI(Enhanced Small Device Interface) A disk drive interface type which was briefly popular before IDE took over. An ESDI drive can transfer data between the drive and controller at 10, 15, or 20 megabits per second, which is faster than an MFM or RLL controller but slower than what is possible with an IDE or SCSI drive. See also IDE. secondary harddisk controller {#idx155170}{#idx155175}{#idx155179}{#idx155183}{#idx155187}

PORTIBM PC Portable (uses same BIOS as XT) 3540-354F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 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. (Small Computer System Interface) adapter {#idx155196}

PORTIBM PC Portable (uses same BIOS as XT) 3550-355F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 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. (Small Computer System Interface) adapter {#idx155203}

PORTIBM PC Portable (uses same BIOS as XT) 3560-356F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 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. (Small Computer System Interface) adapter {#idx155210}

PORTIBM PC Portable (uses same BIOS as XT) 3570-357F - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 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. (Small Computer System Interface) adapter {#idx155217}

PORTIBM PC Portable (uses same BIOS as XT) 36EE - ATI Mach8/Mach32 - FIFO OPTION {#idx155224}{#idx155232}{#idx155236}{#idx155240}{#idx155244}{#idx155248}{#idx155252}

PORTIBM PC Portable (uses same BIOS as XT) 3800-38FF - available for 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). slot 3 {#idx155257}

PORTIBM PC Portable (uses same BIOS as XT) 3C00-3CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 3 {#idx155265}{#idx155270}{#idx155274}

PORTIBM PC Portable (uses same BIOS as XT) 3C00-3CFF - available for 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). slot 3 {#idx155261}

PORTIBM PC Portable (uses same BIOS as XT) 3C80-3C83 - 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). board product ID (board in slot 3) {#idx155303}{#idx155309}

PORTIBM PC Portable (uses same BIOS as XT) 3C80-3C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 3 {#idx155278}{#idx155291}{#idx155295}{#idx155299}

PORTIBM PC Portable (uses same BIOS as XT) 3C84 - 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). CONFIGURATION FLAGS (board in slot 3) {#idx155313}

PORTIBM PC Portable (uses same BIOS as XT) 4000-40FF - available for 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). slot 4 {#idx155318}

PORTIBM PC Portable (uses same BIOS as XT) 4220-4227 - serial port, description same as 03F8 {#idx155322}

PORTIBM PC Portable (uses same BIOS as XT) 4228-422F - serial port, description same as 03F8 {#idx155329}

PORTIBM PC Portable (uses same BIOS as XT) 42E0-42EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx155336}

PORTIBM PC Portable (uses same BIOS as XT) 42E8 - 8514/A and hardware-compatible video cards {#idx155344}{#idx155351}

PORTIBM PC Portable (uses same BIOS as XT) 42EC - ATI Mach64 - ??? {#idx155397}{#idx155404}

PORTIBM PC Portable (uses same BIOS as XT) 42ED - ATI Mach64 - ??? {#idx155409}{#idx155416}{#idx155421}

PORTIBM PC Portable (uses same BIOS as XT) 42EE-42EF - ATI Mach32 - MEMORY BOUNDARY REGISTER {#idx155425}{#idx155434}

PORTIBM PC Portable (uses same BIOS as XT) 42EF - ATI Mach64 - ??? {#idx155445}{#idx155452}

PORTIBM PC Portable (uses same BIOS as XT) 4400-44FF - available for 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). slot 4 {#idx155457}

PORTIBM PC Portable (uses same BIOS as XT) 46E8 - VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers. - VIDEO ADAPTER ENABLE {#idx155470}{#idx155478}{#idx155482}{#idx155486}{#idx155506}{#idx155515}

PORTIBM PC Portable (uses same BIOS as XT) 46EE - ATI Mach32 - ??? {#idx155523}

PORTIBM PC Portable (uses same BIOS as XT) 46EF - ATI Mach64 - ??? {#idx155530}{#idx155538}

PORTIBM PC Portable (uses same BIOS as XT) 4800-48FF - available for 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). slot 4 {#idx155543}

PORTIBM PC Portable (uses same BIOS as XT) 4AE8-4AE9 - 8514/A and compatible - CRT CONTROL {#idx155547}{#idx155558}

PORTIBM PC Portable (uses same BIOS as XT) 4AEE - ATI Mach32 - ??? {#idx155578}

PORTIBM PC Portable (uses same BIOS as XT) 4C00-4CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 4 {#idx155589}{#idx155594}{#idx155598}

PORTIBM PC Portable (uses same BIOS as XT) 4C00-4CFF - available for 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). slot 4 {#idx155585}

PORTIBM PC Portable (uses same BIOS as XT) 4C80-4C83 - 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). board product ID (board in slot 4) {#idx155602}{#idx155608}

PORTIBM PC Portable (uses same BIOS as XT) 4C80-4C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 4 (see 3C80-3C8F) {#idx155612}{#idx155617}{#idx155621}

PORTIBM PC Portable (uses same BIOS as XT) 4C84 - 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). CONFIGURATION FLAGS (board in slot 4) {#idx155625}

PORTIBM PC Portable (uses same BIOS as XT) 4F15 - Tseng Labs ET6000 - Read EDID through Display Data Channel {#idx155461}

PORTIBM PC Portable (uses same BIOS as XT) 5000-50FF - available for 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). slot 5 {#idx155630}

PORTIBM PC Portable (uses same BIOS as XT) 5220-5227 - serial port, description same as 03F8 {#idx155634}

PORTIBM PC Portable (uses same BIOS as XT) 5228-522F - serial port, description same as 03F8 {#idx155641}

PORTIBM PC Portable (uses same BIOS as XT) 52E8-52E9 - C&T 82c480 - EXTENDED CONFIGURATION REGISTER 0 {#idx155648}{#idx155656}{#idx155660}{#idx155664}

PORTIBM PC Portable (uses same BIOS as XT) 52EE-52EF - ATI Mach32 - SCRATCH REGISTER 0 (USED FOR ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. LOCATION) {#idx155669}{#idx155679}

PORTIBM PC Portable (uses same BIOS as XT) 5400-54FF - available for 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). slot 5 {#idx155686}

PORTIBM PC Portable (uses same BIOS as XT) 56E8-56E9 - C&T 82c480 - EXTENDED CONFIGURATION REGISTER 1 {#idx155690}{#idx155698}{#idx155702}{#idx155706}

PORTIBM PC Portable (uses same BIOS as XT) 56EE-56EF - ATI Mach32 - SCRATCH REGISTER 1 {#idx155711}{#idx155719}

PORTIBM PC Portable (uses same BIOS as XT) 5800-58FF - available for 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). slot 5 {#idx155724}

PORTIBM PC Portable (uses same BIOS as XT) 5AE8-5AE9 - C&T 82c480 - EXTENDED CONFIGURATION REGISTER 2 {#idx155728}{#idx155736}{#idx155740}{#idx155744}

PORTIBM PC Portable (uses same BIOS as XT) 5AEE - ATI Mach32 - ??? {#idx155749}

PORTIBM PC Portable (uses same BIOS as XT) 5C00-5CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 5 {#idx155760}{#idx155765}{#idx155769}

PORTIBM PC Portable (uses same BIOS as XT) 5C00-5CFF - available for 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). slot 5 {#idx155756}

PORTIBM PC Portable (uses same BIOS as XT) 5C80-5C83 - 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). board product ID (board in slot 5) {#idx155810}{#idx155816}

PORTIBM PC Portable (uses same BIOS as XT) 5C80-5C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 5 {#idx155773}{#idx155778}{#idx155782}{#idx155786}

PORTIBM PC Portable (uses same BIOS as XT) 5C84 - 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). CONFIGURATION FLAGS (board in slot 5) {#idx155820}

PORTIBM PC Portable (uses same BIOS as XT) 5EE8-5EE9 - C&T 82c480 - EXTENDED CONFIGURATION REGISTER 3 {#idx155825}{#idx155833}{#idx155837}{#idx155841}

PORTIBM PC Portable (uses same BIOS as XT) 5EEE - ATI Mach32 - MEMORY APERTURE CONFIGURATION REGISTER {#idx155846}{#idx155855}{#idx155884}{#idx155888}

PORTIBM PC Portable (uses same BIOS as XT) 6000-60FF - available for 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). slot 6 {#idx155892}

PORTIBM PC Portable (uses same BIOS as XT) 62E0-62EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx155896}

PORTIBM PC Portable (uses same BIOS as XT) 63C0-63CF - Compaq QVision - BitBLT engine {#idx155904}

PORTIBM PC Portable (uses same BIOS as XT) 6400-64FF - available for 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). slot 6 {#idx155912}

PORTIBM PC Portable (uses same BIOS as XT) 66EC - ATI Mach64 - ??? {#idx155916}{#idx155923}

PORTIBM PC Portable (uses same BIOS as XT) 6800-68FF - available for 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). slot 6 {#idx155928}

PORTIBM PC Portable (uses same BIOS as XT) 6AEC-6AED - ATI Mach64 - ??? {#idx155932}{#idx155939}

PORTIBM PC Portable (uses same BIOS as XT) 6AEE - ATI Mach8/Mach32 - MAXIMUM WAIT STATES {#idx155944}{#idx155953}{#idx155957}{#idx155961}{#idx155965}{#idx155969}

PORTIBM PC Portable (uses same BIOS as XT) 6C00-6CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 6 {#idx155985}{#idx155990}{#idx155994}

PORTIBM PC Portable (uses same BIOS as XT) 6C00-6CFF - available for 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). slot 6 {#idx155981}

PORTIBM PC Portable (uses same BIOS as XT) 6C80-6C83 - 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). board product ID (board in slot 6) {#idx155998}{#idx156004}

PORTIBM PC Portable (uses same BIOS as XT) 6C80-6C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 1 {#idx156008}{#idx156013}{#idx156017}{#idx156021}{#idx156026}

PORTIBM PC Portable (uses same BIOS as XT) 6C84 - 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). CONFIGURATION FLAGS (board in slot 6) {#idx156049}

PORTIBM PC Portable (uses same BIOS as XT) 6EEC - ATI Mach64 - ??? {#idx156054}{#idx156061}

PORTIBM PC Portable (uses same BIOS as XT) 6EEE - ATI Mach8/Mach32 - ENGINE VIDEO BUFFER OFFSET LOW {#idx156066}{#idx156075}

PORTIBM PC Portable (uses same BIOS as XT) 7000-70FF - available for 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). slot 7 {#idx156081}

PORTIBM PC Portable (uses same BIOS as XT) 72EC - ATI Mach64 - ??? {#idx156085}{#idx156092}{#idx156097}

PORTIBM PC Portable (uses same BIOS as XT) 72EE - ATI Mach8/Mach32 - ENGINE VIDEO BUFFER OFFSET HIGH {#idx156102}{#idx156111}{#idx156117}{#idx156125}{#idx156129}{#idx156133}

PORTIBM PC Portable (uses same BIOS as XT) 72EF - ATI Mach64 - ??? {#idx156137}{#idx156144}{#idx156149}

PORTIBM PC Portable (uses same BIOS as XT) 7400-74FF - available for 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). slot 7 {#idx156154}

PORTIBM PC Portable (uses same BIOS as XT) 76EE - ATI Mach8/Mach32 - ENGINE DISPLAY PITCH {#idx156158}{#idx156167}{#idx156171}{#idx156176}{#idx156184}{#idx156188}{#idx156192}

PORTIBM PC Portable (uses same BIOS as XT) 7800-78FF - available for 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). slot 7 {#idx156196}

PORTIBM PC Portable (uses same BIOS as XT) 7AEE - ATI Mach8/Mach32 - EXTENDED GRAPHICS ENGINE CONGIFURATION {#idx156200}{#idx156208}{#idx156222}{#idx156231}{#idx156235}{#idx156239}

PORTIBM PC Portable (uses same BIOS as XT) 7C00-7CBF - Adaptec AIC-777x 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). 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. controller in 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). slot 7 {#idx156248}{#idx156253}{#idx156257}

PORTIBM PC Portable (uses same BIOS as XT) 7C00-7CFF - available for 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). slot 7 {#idx156244}

PORTIBM PC Portable (uses same BIOS as XT) 7C80-7C83 - 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). board product ID (board in slot 7) {#idx156261}{#idx156267}

PORTIBM PC Portable (uses same BIOS as XT) 7C80-7C8F - 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. XGA(Extended Graphics Array) Video in 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). slot 7 {#idx156271}{#idx156276}{#idx156280}

PORTIBM PC Portable (uses same BIOS as XT) 7C84 - 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). CONFIGURATION FLAGS (board in slot 7) {#idx156292}

PORTIBM PC Portable (uses same BIOS as XT) 7EEE - ATI Mach8/Mach32 - BOUNDS ACCUMULATOR (RIGHT) {#idx156297}{#idx156306}{#idx156310}{#idx156314}

PORTIBM PC Portable (uses same BIOS as XT) 8000-80FF - available for 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). slot 8 {#idx156319}

PORTIBM PC Portable (uses same BIOS as XT) 82E0-82EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx156323}

PORTIBM PC Portable (uses same BIOS as XT) 82E8-82E9 - 8514/A and compatible - CURRENT Y POSITION {#idx156331}{#idx156341}{#idx156345}{#idx156349}

PORTIBM PC Portable (uses same BIOS as XT) 82EA-82EB - S3 Trio64 - CURRENT Y POSITION 2 {#idx156355}{#idx156362}

PORTIBM PC Portable (uses same BIOS as XT) 82F8-82FF - serial port, description same as 03F8 {#idx156369}

PORTIBM PC Portable (uses same BIOS as XT) 83C0-83CF - Compaq QVision - Line Draw Engine {#idx156376}

PORTIBM PC Portable (uses same BIOS as XT) 83C4 - Compaq Qvision 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). - Virtual Controller Select {#idx156383}

PORTIBM PC Portable (uses same BIOS as XT) 83C6-83C9 - Compaq Qvision 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). - 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. color registers {#idx156391}{#idx156399}{#idx156403}{#idx156412}

PORTIBM PC Portable (uses same BIOS as XT) 83D0-9FD3 - Chips&Techs 64310 - 32-BIT EXTENSION REGS - BitBLT {#idx156419}{#idx156434}{#idx156438}

PORTIBM PC Portable (uses same BIOS as XT) 83F8-83FF - serial port, description same as 03F8 {#idx156537}

PORTIBM PC Portable (uses same BIOS as XT) 8400-84FF - available for 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). slot 8 {#idx156544}

PORTIBM PC Portable (uses same BIOS as XT) 86E8-86E9 - 8514/A and compatible - CURRENT X POSITION {#idx156548}{#idx156559}{#idx156563}{#idx156567}

PORTIBM PC Portable (uses same BIOS as XT) 86EA-86EB - S3 Trio64 - CURRENT X POSITION 2 {#idx156573}{#idx156581}

PORTIBM PC Portable (uses same BIOS as XT) 8800-88FF - available for 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). slot 8 {#idx156588}

PORTIBM PC Portable (uses same BIOS as XT) 8AE8-8AE9 - 8514/A and compatible - DESTINATION Y POSITION {#idx156592}{#idx156602}{#idx156606}{#idx156610}

PORTIBM PC Portable (uses same BIOS as XT) 8AEA-8AEB - S3 Trio64 - DESTINATION Y COORD 2 / AXIAL STEP CONSTANT 2 {#idx156620}{#idx156627}

PORTIBM PC Portable (uses same BIOS as XT) 8C00-8CFF - available for 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). slot 8 {#idx156633}

PORTIBM PC Portable (uses same BIOS as XT) 8C80-8C83 - 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). board product ID (board in slot 8) {#idx156637}{#idx156643}

PORTIBM PC Portable (uses same BIOS as XT) 8C84 - 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). CONFIGURATION FLAGS (board in slot 8) {#idx156647}

PORTIBM PC Portable (uses same BIOS as XT) 8EE8-8EE9 - 8514/A and compatible - DESTINATION X POSITION {#idx156652}{#idx156662}{#idx156666}{#idx156671}

PORTIBM PC Portable (uses same BIOS as XT) 8EEA-8EEB - S3 Trio64 - DESTINATION X COORD 2 / AXIAL STEP CONSTANT 2 {#idx156677}{#idx156684}

PORTIBM PC Portable (uses same BIOS as XT) 8EEE - ATI Mach32 - READ EXTENDED GRAPHICS CONFIGURATION {#idx156690}{#idx156698}

PORTIBM PC Portable (uses same BIOS as XT) 9000-90FF - available for 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). slot 9 {#idx156703}

PORTIBM PC Portable (uses same BIOS as XT) 92E8-92E9 - 8514/A and compatible - BRESENHAM ERROR TERM {#idx156707}{#idx156719}{#idx156726}

PORTIBM PC Portable (uses same BIOS as XT) 92EA-92EB - S3 Trio64 - LINE ERROR TERM 2 {#idx156733}{#idx156741}

PORTIBM PC Portable (uses same BIOS as XT) 9400-94FF - available for 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). slot 9 {#idx156748}

PORTIBM PC Portable (uses same BIOS as XT) 96E8-96E9 - 8514/A and compatible - MAJOR AXIS PIXEL COUNT {#idx156752}{#idx156762}{#idx156766}

PORTIBM PC Portable (uses same BIOS as XT) 96EA-96EB - S3 Trio64 - MAJOR AXIS PIXEL COUNT 2 {#idx156772}{#idx156779}

PORTIBM PC Portable (uses same BIOS as XT) 9800-98FF - available for 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). slot 9 {#idx156786}

PORTIBM PC Portable (uses same BIOS as XT) 9AE8-9AE9 - 8514/A and compatible - GRAPHICS PROCESSOR STATUS / COMMAND {#idx156790}{#idx156802}{#idx156806}{#idx156850}

PORTIBM PC Portable (uses same BIOS as XT) 9AEA-9AEB - S3 Trio64 - DRAWING COMMAND 2 {#idx156874}{#idx156881}

PORTIBM PC Portable (uses same BIOS as XT) 9AEE - ATI Mach8/Mach32 - LINEDRAW INDEX REGISTER {#idx156893}{#idx156901}{#idx156906}

PORTIBM PC Portable (uses same BIOS as XT) 9C00-9CFF - available for 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). slot 9 {#idx156917}

PORTIBM PC Portable (uses same BIOS as XT) 9C80-9C83 - 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). board product ID (board in slot 9) {#idx156921}{#idx156927}

PORTIBM PC Portable (uses same BIOS as XT) 9C84 - 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). CONFIGURATION FLAGS (board in slot 9) {#idx156931}

PORTIBM PC Portable (uses same BIOS as XT) 9EE8-9EE9 - 8514/A and compatible - SHORT STROKE VECTORS {#idx156936}{#idx156947}{#idx156953}

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. ???? {#idx156962}

PORTIBM PC Portable (uses same BIOS as XT) A2E0-A2EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx156968}

PORTIBM PC Portable (uses same BIOS as XT) A2E8-A2EB - 8514/A and compatible - BACKGROUND COLOR {#idx156975}{#idx156986}{#idx156990}

PORTIBM PC Portable (uses same BIOS as XT) A2EE-A2EF - ATI Mach8/Mach32 - LINE DRAW OPTIONS {#idx157000}{#idx157008}{#idx157012}

PORTIBM PC Portable (uses same BIOS as XT) A3D0-BFD3 - Chips&Techs 64310 - 32-BIT EXTENSION REGS - CURSOR CONTROL {#idx157027}{#idx157043}{#idx157047}

PORTIBM PC Portable (uses same BIOS as XT) A6E8-A6EB - 8514/A and compatible - FOREGROUND COLOR {#idx157088}{#idx157099}{#idx157103}{#idx157107}{#idx157111}

PORTIBM PC Portable (uses same BIOS as XT) AAE8-AAEB - 8514/A and compatible - WRITE MASK {#idx157121}{#idx157132}{#idx157136}{#idx157140}

PORTIBM PC Portable (uses same BIOS as XT) AEE8-AEEB - 8514/A and compatible - READ MASK {#idx157150}{#idx157159}{#idx157163}{#idx157167}

PORTIBM PC Portable (uses same BIOS as XT) AFFF - VIDEO REGISTER {#idx157175}

PORTIBM PC Portable (uses same BIOS as XT) B220-B227 - serial port, description same as 03F8 {#idx157184}

PORTIBM PC Portable (uses same BIOS as XT) B228-B22F - serial port, description same as 03F8 {#idx157191}

PORTIBM PC Portable (uses same BIOS as XT) B2E8-B2EB - 8514/A and compatible - COLOR COMPARE {#idx157198}{#idx157208}{#idx157212}{#idx157216}{#idx157220}

PORTIBM PC Portable (uses same BIOS as XT) B2EE - ATI Mach32 - ??? {#idx157230}

PORTIBM PC Portable (uses same BIOS as XT) B6E8-B6E9 - 8514/A and compatible - BACKGROUND MIX {#idx157237}{#idx157247}{#idx157251}{#idx157255}{#idx157259}

PORTIBM PC Portable (uses same BIOS as XT) B6EE - ATI Mach32 - ??? {#idx157265}

PORTIBM PC Portable (uses same BIOS as XT) BAE8-BAE9 - 8514/A and compatible - FOREGROUND MIX {#idx157272}{#idx157282}{#idx157286}

PORTIBM PC Portable (uses same BIOS as XT) BAEE - ATI Mach32 - ??? {#idx157304}

PORTIBM PC Portable (uses same BIOS as XT) C000-CFFF - PCI Configuration Mechanism 2 - CONFIGURATION SPACE {#idx157445}{#idx157454}{#idx157461}{#idx157466}{#idx157470}

PORTIBM PC Portable (uses same BIOS as XT) C100-C1FF - Intel Pentium mboard - PCTech RZ1000 EIDE controller {#idx157476}{#idx157491}{#idx157495}

PORTIBM PC Portable (uses same BIOS as XT) C200-C204 - Intel Pentium mboard ("Neptune" chipset) {#idx157501}

PORTIBM PC Portable (uses same BIOS as XT) C220-C227 - serial port, description same as 03F8 {#idx157516}

PORTIBM PC Portable (uses same BIOS as XT) C228-C22F - serial port, description same as 03F8 {#idx157523}

PORTIBM PC Portable (uses same BIOS as XT) C244 - Intel Pentium mboard ("Neptune" chipset) {#idx157530}

PORTIBM PC Portable (uses same BIOS as XT) C2E0-C2EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx157537}

PORTIBM PC Portable (uses same BIOS as XT) C2EE - ATI Mach32 - ??? {#idx157544}

PORTIBM PC Portable (uses same BIOS as XT) C6EE - ATI Mach32 - SHORT-STROKE VECTOR {#idx157551}

PORTIBM PC Portable (uses same BIOS as XT) CAEE - ATI Mach32 - ??? {#idx157560}

PORTIBM PC Portable (uses same BIOS as XT) CEEE - ATI Mach8/Mach32 - DATAPATH CONFIGURATION {#idx157567}{#idx157575}

PORTIBM PC Portable (uses same BIOS as XT) D220-D227 - serial port, description same as 03F8 {#idx157592}{#idx157599}{#idx157603}

PORTIBM PC Portable (uses same BIOS as XT) D228-D22F - serial port, description same as 03F8 {#idx157607}{#idx157614}{#idx157618}

PORTIBM PC Portable (uses same BIOS as XT) D2EE - ATI Mach32 - ??? {#idx157622}

PORTIBM PC Portable (uses same BIOS as XT) DAEE-DAEF - ATI Mach8/Mach32 - SCISSORS REGION (LEFT) {#idx157629}{#idx157637}{#idx157641}{#idx157645}{#idx157649}

PORTIBM PC Portable (uses same BIOS as XT) DEEE-DEEF - ATI Mach8/Mach32 - SCISSORS REGION (TOP) {#idx157653}{#idx157661}{#idx157665}{#idx157669}

PORTIBM PC Portable (uses same BIOS as XT) E2E0-E2EF - GPIB (General Purpose Interface Bus, IEEE 488 interface) {#idx157673}

PORTIBM PC Portable (uses same BIOS as XT) E2E8-E2E9 - 8514/A and compatible - PIXEL DATA TRANSFER {#idx157680}{#idx157688}

PORTIBM PC Portable (uses same BIOS as XT) E2EE-E2EF - ATI Mach8/Mach32 - SCISSORS REGION (BOTTOM) {#idx157695}{#idx157704}{#idx157708}{#idx157712}

PORTIBM PC Portable (uses same BIOS as XT) E6EE-E6EF - ATI Mach8/Mach32 - SCISSORS REGION (RIGHT) {#idx157717}{#idx157726}{#idx157730}{#idx157734}

PORTIBM PC Portable (uses same BIOS as XT) EAE8-EAEB - S3 Trio64 - PATTERN {#idx157739}

PORTIBM PC Portable (uses same BIOS as XT) EDC0-EDC1 - DR DOS BATTERYMAX - DYNAMIC IDLE DETECTION {#idx157750}

PORTIBM PC Portable (uses same BIOS as XT) FAEE - ATI Mach32 - CHIP IDENTIFICATION REGISTER {#idx157775}{#idx157785}{#idx157790}

PORTIBM PC Portable (uses same BIOS as XT) FEEE-FEEF - ATI Mach8/Mach32 - DIRECT LINE DRAW REGISTER {#idx157795}{#idx157803}

PORTIBM PC Portable (uses same BIOS as XT) xxxx - AMD-645 - Power Management Registers {#idx158078}{#idx158255}{#idx158261}{#idx158265}{#idx158270}{#idx158274}{#idx158291}{#idx158297}{#idx158301}{#idx158305}{#idx158310}{#idx158314}

PORTIBM PC Portable (uses same BIOS as XT) xxxx - AMD-645 - USBsee Universal Serial Bus {#idx158354}

PORTIBM PC Portable (uses same BIOS as XT) xxxx - Ensoniq AudioPCI ES1370 - CONTROL REGISTERS {#idx158369}{#idx158582}{#idx158735}

PORTIBM PC Portable (uses same BIOS as XT) xxxx - Future Domain TMC-3260 PCI 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 {#idx157807}{#idx157816}{#idx157820}{#idx157856}{#idx157865}{#idx157869}{#idx157878}{#idx157882}{#idx158693}