RBIL61 - COMPAQ

Bibliography {#idx166664}{#idx166737}{#idx167176}{#idx167178}{#idx167181}{#idx167397}

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 {#idx160431}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 0Eh - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. PS/2IBM PS/2, any model - DIAGNOSTIC STATUS BYTE {#idx168112}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 1Bh - MCA - SLOT 1 ADAPTER CARD ID {#idx168499}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 25h - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. - Second Hard Disk user defined: # of Cylinders, High Byte {#idx168750}{#idx168754}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 2Ch - AMIAmerican Megatrends, Inc.(American Megatrends, Inc.) A hardware, software and firmware company founded in 1985. - Second Hard Disk user defined: # of Sectors per track {#idx168902}{#idx168905}

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 2Fh - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. - Standard CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. Checksum, Low Byte {#idx168959}

I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/00h - ITT VPX 32xx/322xD - JEDEC MANUFACTURER ID {#idx170251}

INT 10 - Compaq QVision - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx6494}{#idx6498}

INT 10 - VESA(Video Electronics Standards Association) An industry group which sets both hardware and software standards and recommendations. The term VESA is also used to denote compliance with the VESA SuperVGA BIOS Extensions, a standard set of video BIOS functions for accessing video modes of higher resolution than those defined by IBMInternational Busiuness Machines. VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./DC (Display Data Channel) - READ EDID {#idx5005}{#idx5017}

INT 10 - VIDEO - ALTERNATE FUNC SELECT (ATI,Tatung,Taxan) - ENHANCED FEATURES {#idx3121}

INT 10 - VIDEO - Compaq ADAPT.COM - GET ??? {#idx6741}

INT 10 - VIDEO - Compaq ADAPT.COM - GET ??? DATA AREA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx7120}

INT 10 - VIDEO - Compaq ADAPT.COM - INSTALLATION CHECK {#idx6728}{#idx6738}

INT 10 - VIDEO - Compaq ADAPT.COM - SET ??? {#idx6745}

INT 10 - VIDEO - Compaq Extensions - CHECK DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. 6-BIT/8-BIT mode {#idx6654}

INT 10 - VIDEO - Compaq Extensions - CHECK WHETHER VIDEO REVERSED {#idx6626}

INT 10 - VIDEO - Compaq Extensions - ENABLE/DISABLE DISPLAY {#idx6572}

INT 10 - VIDEO - Compaq Extensions - GET ENVIRONMENT {#idx6530}{#idx6536}{#idx6539}{#idx6542}{#idx6546}{#idx6550}

INT 10 - VIDEO - Compaq Extensions - GET EXTENDED ENVIRONMENT {#idx6685}{#idx6691}{#idx6694}

INT 10 - VIDEO - Compaq Extensions - GET HIGH ADDRESS MAP REGISTER {#idx6673}{#idx6683}

INT 10 - VIDEO - Compaq Extensions - NEW ACTIVE MONITOR {#idx6702}

INT 10 - VIDEO - Compaq Extensions - SELECT EXTERNAL MONITOR {#idx6507}

INT 10 - VIDEO - Compaq Extensions - SELECT INTERNAL MONITOR {#idx6515}

INT 10 - VIDEO - Compaq Extensions - SET DAC(Digital-to-Analog Converter) A hardware device (in its simplest form, nothing more than a set of interconnected resistors) which converts a digital number into an analog signal whose voltage is proportional to the value of the digital number. VGAVideo Graphics Array and later color video boards use DACs to convert color values into the analog signals sent to the display; sound boards normally use DACs as well. 6-BIT MODE {#idx6633}

INT 10 - VIDEO - Compaq Extensions - SET HIGH ADRESS MAP REGISTER {#idx6661}

INT 10 - VIDEO - Compaq Extensions - SET MASTER MODE OF CURRENT CONTROLLER {#idx6524}

INT 10 - VIDEO - Compaq Extensions - SET MODE SWITCH DELAY {#idx6561}

INT 10 - VIDEO - Compaq Extensions - TURN OFF REVERSE VIDEO {#idx6614}

INT 10 - VIDEO - Compaq Extensions - TURN ON REVERSE VIDEO {#idx6604}

INT 10 - VIDEO - Compaq QVision - GAMMA CORRECTION {#idx6717}

INT 10 - VIDEO - Compaq SLT/286 - READ GRAY SCALE TABLE {#idx6582}

INT 10 - VIDEO - Compaq SLT/286 - WRITE COLOR MIX REGISTERS {#idx6595}

INT 10 - VIDEO - Compaq SLT/286 - WRITE GRAY SCALE TABLE {#idx6587}

INT 10 - VIDEO - GRAPH-MODE CHARGEN - LOAD 8x16 GRAPH CHARS (Compaq Systempro) {#idx2827}

INT 10 - VIDEO - GRAPH-MODE CHARGEN - SET USER GRAPHICS CHARACTERS (PSIBM PS/2, any model,EGAEnhanced Graphics Adapter(Enhanced Graphics Adapter) IBMInternational Busiuness Machines's second color video board for the IBMInternational Busiuness Machines PCIBM PC family, capable of a maximum resolution of 640x350 pixels in 16 simultaneous colors of a total of 64 possible colors.,VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) {#idx2765}

INT 10 - VIDEO - LOAD SYSTEM ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. DEFAULT LCD(Liquid Crystal Display) CHARACTER FONT (CONVIBM Convertible,CP386Compaq Portable 386) {#idx3382}

INT 10 - VIDEO - LOAD USER-SPECIFIED LCD(Liquid Crystal Display) CHARACTER FONT (CONVIBM Convertible,Compaq Port 386) {#idx3369}{#idx3372}

INT 10 - VIDEO - SET MAPPING OF LCD(Liquid Crystal Display) HIGH INTENSITY ATTRIBUTES (CONVIBM Convertible,CP386Compaq Portable 386) {#idx3392}{#idx3395}{#idx3398}

INT 10 - VIDEO - SET VIDEO MODE {#idx1369}{#idx1376}{#idx1385}{#idx1390}{#idx1396}{#idx1399}{#idx1401}{#idx1403}{#idx1405}{#idx1416}{#idx1470}{#idx1475}{#idx1480}{#idx1541}{#idx1545}{#idx1555}{#idx1562}

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 {#idx7482}

INT 13 - Compaq, ATAPI Removable Media Device - GET CURRENT MEDIA FORMAT {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx9700}{#idx9706}{#idx9720}

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) {#idx9065}

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.) {#idx8552}{#idx8557}{#idx8562}{#idx8609}

INT 13 - DISK - GET STATUS OF LAST OPERATION {#idx7979}

INT 13 - FLOPPY - FORMAT TRACK {#idx8233}

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) {#idx9124}{#idx9133}{#idx9137}

INT 13 - IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911./MS INT 13 Extensions - GET DRIVE PARAMETERS {#idx10528}

INT 14 - SERIAL - GET PORTIBM PC Portable (uses same BIOS as XT) STATUS {#idx11828}

INT 14 - SERIAL - INITIALIZE PORTIBM PC Portable (uses same BIOS as XT) {#idx11648}

INT 14 - SERIAL - READ CHARACTER FROM PORTIBM PC Portable (uses same BIOS as XT) {#idx11793}

INT 14 - SERIAL - WRITE CHARACTER TO PORTIBM PC Portable (uses same BIOS as XT) {#idx11760}

INT 15 - Compaq Contura - GET ??? {#idx24841}{#idx24845}{#idx24853}{#idx24859}{#idx24862}{#idx24892}

INT 15 - Compaq Contura 486 and "Alladin" 1993/08/05 ROMs - ??? {#idx18975}

INT 15 - Compaq Contura 486 and "Alladin" 1993/08/05 ROMs - GET ??? {#idx18967}

INT 15 - Compaq EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). System ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 04/08/93 - 32-bit CS ADDRESSING MODE CALLS {#idx23583}

INT 15 - Compaq LTE Lite - GET ??? {#idx23526}{#idx23530}

INT 15 - Compaq LTE Lite - SET ??? {#idx23533}{#idx23537}

INT 15 - Compaq SLT/286 - ENTER STANDBY {#idx18767}

INT 15 - Compaq SLT/286 - MODIFY POWER CONSERVATION/MODEM CONFIGURATION {#idx18937}

INT 15 - Compaq SLT/286 - READ POWER CONSERVATION/MODEM CONFIGURATION {#idx18897}{#idx18922}{#idx18929}

INT 15 - Compaq SLT/286 or Portable 386 - READ LCD(Liquid Crystal Display)/PLASMA TIMEOUT {#idx18731}

INT 15 - Compaq SLT/286 or Portable 386 - SET LCD(Liquid Crystal Display)/PLASMA TIMEOUT {#idx18737}

INT 15 - Compaq Systempro - MULTIPROCESSOR AVAILABLE {#idx24804}

INT 15 - Compaq Systempro - MULTIPROCESSOR DISPATCH {#idx24790}

INT 15 - Compaq Systempro - MULTIPROCESSOR END-OF-DISPATCH {#idx24797}

INT 15 - EISA(Enhanced Industry-Standard Architecture) A 32-bit superset of the IBMInternational Busiuness Machines ATIBM PC AT's expansion bus (which is now known as the ISA or Industry-Standard Architecture bus). SYSTEM ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. - READ FUNCTION CONFIGURATION INFORMATION {#idx23491}

INT 15 - Phoenix BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. v4.0 - GET MEMORY SIZE FOR >64M CONFIGURATIONS {#idx24880}{#idx24889}

INT 15 - SYSTEM - GET CONFIGURATION (XTIBM PC XT >1986/1/10,ATIBM PC AT mdl 3x9,CONVIBM Convertible,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx21663}{#idx21665}{#idx21801}{#idx21804}{#idx21809}{#idx21895}{#idx22573}{#idx22578}{#idx22582}{#idx22586}{#idx22593}

INT 15 - Tandy??? - ??? {#idx24817}{#idx24826}{#idx24827}

INT 16 - Compaq 386 and newer - DETERMINE ATTACHED KEYBOARD TYPE {#idx27046}

INT 16 - Compaq 386 and newer - READ CURRENT CPU(Central Processing Unit) The microprocessor which executes programs on your computer. SPEED {#idx27037}

INT 16 - Compaq 386 and newer - SET CPU(Central Processing Unit) The microprocessor which executes programs on your computer. SPEED {#idx27007}

INT 16 - Compaq 80286s - SET CPU(Central Processing Unit) The microprocessor which executes programs on your computer. SPEED LIMIT (OVERRIDE JUMPER) {#idx27065}

INT 16 - Compaq Systempro and higher - CACHE CONTROLLER STATUS {#idx27081}

INT 16 - Compaq Systempro and higher - DISABLE CACHE CONTROLLER {#idx27120}

INT 16 - Compaq Systempro and higher - ENABLE CACHE CONTROLLER {#idx27105}

INT 16 - KEYBOARD - GET EXTENDED SHIFT STATES (enh kbd support only) {#idx25415}

INT 19 - SYSTEM - BOOTSTRAP LOADER {#idx30239}

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+ - FIND PCI DEVICE {#idx32245}{#idx32259}{#idx32385}

INT 1A - TIME - GET REAL-TIME CLOCK DATE (ATIBM PC AT,XT286IBM PC XT/286,PSIBM PS/2, any model) {#idx30574}

INT 21 - DOS 2+ - GET ADDRESS OF INDOS FLAG {#idx44619}

INT 21 - DOS 2+ - GET DOS VERSION {#idx44137}{#idx44153}{#idx44194}

INT 21 - DOS 3.0+ - CREATE TEMPORARY FILE {#idx52846}

INT 21 - DOS 3.2+ - IOCTL - GENERIC BLOCK DEVICE REQUEST {#idx49189}

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.} {#idx46783}

INT 21 - Memory Managers - 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 {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx47294}

INT 21 - PGS1600.DEV - IOCTL - GET CONFIGURATION INFO {#idx47072}{#idx47084}

INT 21 - PGS1600.DEV - IOCTL - SET CONFIGURATION??? {#idx48002}{#idx48020}{#idx48029}{#idx48046}

INT 21 - Phar Lap 386/DOS-Extender VMM - GET MEMORY STATISTICS {protected mode} {#idx42789}

INT 2F - DOS 4.0+ DRIVER.SYS support - GET DRIVE DATA TABLE LIST {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx75719}

INT 2F - DRIVER.SYS support - EXECUTE DEVICE DRIVER REQUEST {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx75443}{#idx75461}

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 {#idx79745}{#idx79746}{#idx80112}

INT 2F - VGAsave v1.93 - INSTALLATION CHECK {#idx91185}

INT 2F - WANG_ER.COM - INSTALLATION CHECK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx91033}

INT 48 - Compaq UILIB.EXE - API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx100771}

INT 48 - Compaq UILIB.EXE - INSTALLATION CHECK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx100900}

INT 67 - Compaq CEMM v5.10+ - PRIVATE API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes. {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx117190}

INT 67 - RM386 v6.00 - GET RM386 GLOBAL FLAGS {#idx116689}

INT 77 - IRQ15 - RESERVED (ATIBM PC AT,PSIBM PS/2, any model) {callout or callback} {#idx121927}

INT 7A - AutoCAD Device Interface - Compaq VGADI41.EXE - GET ENTRY POINT {real mode} {#idx123193}

INT 7A - AutoCAD Device Interface - DISPLAY - INITIALIZE (INIT1) {real mode} {#idx123170}

MEM 0040h:0015h - Compaq Deskpro 386 - PREVIOUS SCAN CODE {#idx161085}

MEM 0040h:0016h - Compaq Deskpro 386 - KEYCLICK VOLUME {#idx161107}

MEM 80C0h:0000h - Compaq Deskpro 386 system memory board register {#idx162891}{#idx162897}{#idx162904}

MEM 80C0h:0000h - COMPAQ DIAGNOSTICS REGISTER {#idx162913}{#idx162920}

MEM F000h:FFE0h - COMPAQ 386 MACHINES {#idx163932}{#idx163938}{#idx163942}{#idx163944}{#idx163948}{#idx163954}{#idx163957}{#idx163958}{#idx163968}{#idx163979}

MEM F000h:FFE8h - Compaq - MACHINE SIGNATURE STRING {#idx163984}{#idx163988}

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 {#idx140326}

PORTIBM PC Portable (uses same BIOS as XT) 0084 - Compaq POSTsee Power-On Self-Test Diagnostic {#idx141059}

PORTIBM PC Portable (uses same BIOS as XT) 00EC-00ED - Compaq LTE Elite {#idx142149}

PORTIBM PC Portable (uses same BIOS as XT) 00F9 - Compaq LTE Elite {#idx142203}

PORTIBM PC Portable (uses same BIOS as XT) 00FB - Compaq LTE Elite {#idx142209}

PORTIBM PC Portable (uses same BIOS as XT) 0100-010F - CompaQ Tape drive adapter. alternate address at 0300 {#idx142303}

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 {#idx142399}

PORTIBM PC Portable (uses same BIOS as XT) 0300-030F - Philips CD-ROM player CM50 {#idx144744}

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 {#idx146112}

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 {#idx148833}{#idx148837}

PORTIBM PC Portable (uses same BIOS as XT) 0C7C - bit) 7-4 (Compaq) {#idx153298}

PORTIBM PC Portable (uses same BIOS as XT) 13C6 - Compaq - VIDEO STATUS??? {#idx153983}{#idx153987}{#idx153993}

PORTIBM PC Portable (uses same BIOS as XT) 1C65 - Compaq Contura Aero {#idx154571}

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 {#idx154618}

PORTIBM PC Portable (uses same BIOS as XT) 2065 - Compaq Contura Aero {#idx154655}{#idx154662}{#idx154667}

PORTIBM PC Portable (uses same BIOS as XT) 23C0-23CF - Compaq QVision - BitBLT engine {#idx154941}

PORTIBM PC Portable (uses same BIOS as XT) 2465 - Compaq Contura Aero {#idx154951}{#idx154958}{#idx154963}

PORTIBM PC Portable (uses same BIOS as XT) 27C6 - Compaq LTE Lite - LCD(Liquid Crystal Display) TIMEOUT {#idx155055}

PORTIBM PC Portable (uses same BIOS as XT) 33C0-33CF - Compaq QVision - BitBLT engine {#idx155135}

PORTIBM PC Portable (uses same BIOS as XT) 63C0-63CF - Compaq QVision - BitBLT engine {#idx155907}

PORTIBM PC Portable (uses same BIOS as XT) 83C0-83CF - Compaq QVision - Line Draw Engine {#idx156377}

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 {#idx156384}

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 {#idx156392}