RBIL61 - SWITCHING

CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 0Bh - RTCsee Real-Time Clock - STATUS REGISTER B (read/write) {#idx168042}

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. C0h - Philips TSA5522/TSA5523M Frequency Synthesizer - SET TUNER FREQUENCY {#idx172277}

INT 0A - IRQ2 - LPT2 (PCIBM PC), VERTICAL RETRACE INTERRUPT (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.) {callout or callback} {#idx819}

INT 0B - IRQ3 - SERIAL COMMUNICATIONS (COM2) {callout or callback} {#idx928}

INT 0C - IRQ4 - SERIAL COMMUNICATIONS (COM1) {callout or callback} {#idx980}

INT 0D - IRQ5 - FIXED DISK (PCIBM PC,XTIBM PC XT), LPT2 (ATIBM PC AT), reserved (PS/2IBM PS/2, any model) {callout or callback} {#idx1062}

INT 0E - IRQ6 - DISKETTE CONTROLLER {callout or callback} {#idx1149}

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. SuperVGA 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. - CPU(Central Processing Unit) The microprocessor which executes programs on your computer. VIDEO MEMORY CONTROL {#idx4431}

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. SuperVGA 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 SuperVGA MODE INFORMATION {#idx4333}

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. SuperVGA 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 VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./AF v1.0P DEVICE CONTEXT BUFFER {#idx4608}{#idx4610}

INT 10 - VIDEO - SET VIDEO MODE {#idx1767}

INT 14 - DimVGA v3.0+ - SET MOUSE CHECK STATUS {#idx14912}

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. - CPU(Central Processing Unit) The microprocessor which executes programs on your computer. SPEED CONTROL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx23618}

INT 15 - Omniview Multitasker - SWITCHING TO BACKGROUND {callout or callback} {#idx20162}

INT 15 - Omniview Multitasker - SWITCHING TO FOREGROUND {callout or callback} {#idx20167}

INT 15 - TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "BEGINC" - BEGIN CRITICAL REGION {#idx16436}{#idx16439}

INT 15 - TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "ENDC" - END CRITICAL REGION {#idx16449}

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 {#idx32366}

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. {#idx33239}

INT 21 - DOS 1+ - SET RANDOM RECORD NUMBER FOR FCBsee File Control Block {#idx42366}

INT 21 - DOS 3.0+ - GET EXTENDED ERROR INFORMATION {#idx52523}

INT 21 - DOS 3.4/4.0 - GET CURRENT CPSW STATE {#idx44426}

INT 21 - DOS 3.4/4.0 - SET CPSW STATE {#idx44445}

INT 21 - DOS 4.x only - internal - GET DOS SWAPPABLE DATA AREAS {obsolete, 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.} {#idx53355}

INT 21 - DoubleDOS - GET VIRTUAL SCREEN ADDRESS {#idx62967}{#idx71200}

INT 21 - DoubleDOS - TURN OFF TASK SWITCHING {#idx62861}{#idx62864}{#idx71103}{#idx71106}

INT 21 - DoubleDOS - TURN ON TASK SWITCHING {#idx62894}{#idx62897}{#idx71149}{#idx71152}

INT 21 - Software Carousel - SELECTIVELY ENABLE/DISABLE MENU AND SWITCHING {#idx58807}

INT 21 - TAME v2.10+ - INSTALLATION CHECK {#idx43767}{#idx43786}{#idx43817}{#idx43851}

INT 2C - Cloaking v1.01 - SET CRITICAL SECTION {protected mode} {#idx73478}

INT 2F - DOS 5+ DOSSHELL - TASK SWITCHING API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes.??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx84260}

INT 2F - DR DOS 6.0 TaskMAX - ENABLE/DISABLE DIRECT SWITCHING {#idx82239}{#idx82242}

INT 2F - MS Windows - SWITCH VMs AND CALLBACK {#idx81439}

INT 2F - MS Windows WINOLDAP - SWITCHING ??? {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx83941}{#idx83950}

INT 2F - OS/2 compatibility box - SWITCHING DOS TO BACKGROUND {callout or callback} {#idx83067}

INT 2F - OS/2 compatibility box - SWITCHING DOS TO FOREGROUND {callout or callback} {#idx83074}

INT 2F - Windows 3.x - SWITCHING DOS TO BACKGROUND {callout or callback} {#idx83096}

INT 2F - Windows 3.x - SWITCHING DOS TO FOREGROUND {callout or callback} {#idx83106}

INT 58 - TI Professional PCIBM PC - SYSTEM TIMER 25ms HOOK {callout or callback} {#idx102987}

INT 5A - TI Professional PCIBM PC - SYSTEM TIMER 100ms HOOK {#idx103097}

INT 62 - FGDRIVER v4.02 - "FG_MOUSEFIN" - UNHOOK FASTGRAPH MOUSE HANDLER {partially documented} {#idx112081}

INT 72 - IRQ10 - RESERVED {callout or callback} {#idx121770}

INT 73 - IRQ11 - RESERVED {callout or callback} {#idx121786}

INT 74 - IRQ12 - POINTING DEVICE (PSIBM PS/2, any model) {callout or callback} {#idx121807}

INT 76 - IRQ14 - HARD DISK CONTROLLER OPERATION COMPLETE (ATIBM PC AT and later) {callout or callback} {#idx121864}

INT 77 - IRQ15 - RESERVED (ATIBM PC AT,PSIBM PS/2, any model) {callout or callback} {#idx121900}{#idx121917}

INT E1 - DeskMate (Tandy) - TASK DATA SEGMENTS (NOT A VECTOR!) {#idx131680}

Interrupt Primer {#idx176898}

MEM 0040h:0089h - VIDEO (MCGAMulti-Color Graphics Array(Multi-Color Graphics Array) The low-end color adapter offered in IBMInternational Busiuness Machines's early PS/2IBM PS/2, any model series machines./VGAVideo Graphics Array(Video Graphics Array) The video adapter introduced with the IBMInternational Busiuness Machines PS/2IBM PS/2, any model series of computers.) - MODE-SET OPTION CONTROL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} {#idx161934}

Opcodes List {#idx173225}{#idx173226}

PORTIBM PC Portable (uses same BIOS as XT) 0022-0024 - CHIPSET FROM PICO POWER, UMC or PCChips {#idx135560}

PORTIBM PC Portable (uses same BIOS as XT) 00A8-00A9 - Via VT82C496G "Pluto" - CONFIGURATION REGISTERS {#idx141329}{#idx141551}{#idx141555}

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).) {#idx143064}

PORTIBM PC Portable (uses same BIOS as XT) 03F8-03FF - Serial port (8250,8250A,8251,16450,16550,16550A,etc.) COM1 {#idx151851}

PORTIBM PC Portable (uses same BIOS as XT) 0678-067A - Intel 82091AA - ECP-mode PARALLEL PORTIBM PC Portable (uses same BIOS as XT) {#idx152689}