SYSSVC.COM - ??? (INT 69, 10NET v5.0, AX=4001h) SYSSVC.COM - ??? (INT 69, 10NET v5.0, AX=4002h) SYSSVC.COM - ??? (INT 69, 10NET v5.0, AX=4101h) SYSSVC.COM - ??? (INT 69, 10NET v5.0, AX=4102h) SYSSVC.COM - ??? (INT 69, 10NET v5.0, AX=4103h) SYSSVC.COM - ??? (INT 69, 10NET v5.0, AX=4104h) SYSTEM CALLS (INT 80, FreeBSD) SYSTEM CALLS (INT 80, Linux) SYSTEM CLOCK (INT 55, Tandy 2000) SYSTEM CONFIGURATION CALL (INT 4F, TI Professional PCIBM PC) SYSTEM CONFIGURATION SWITCHES (PORTIBM PC Portable (uses same BIOS as XT) 0066-0067, AT&TAmerican Telephone and Telegraph 6300+) SYSTEM CONTROL (PORTIBM PC Portable (uses same BIOS as XT) 01E8-01EF, Headland HL21 & Acer M5105 chipsets) SYSTEM CONTROL (PORTIBM PC Portable (uses same BIOS as XT) 0601, Headland HL21, Acer M5105 chipsets) SYSTEM DATA (NOT A VECTOR!) (INT 67, TI Professional PCIBM PC) SYSTEM 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. (INT 14, AH=83h) SYSTEM INFORMATION (NOT A VECTOR!) (INT 66, TI Professional PCIBM PC) SYSTEM LOGOUT (INT 21, Novell NetWare, CONNECTION SERVICES, AH=D7h) System Managment Interrupt (OPCODE SMI) system resume vector (CONVERTIBLE) (INT 6C) SYSTEM ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. DATA AREA POINTER (NOT A VECTOR!) (INT 60, TI Professional PCIBM PC) SYSTEM SETUP {partially documented} (INT 15, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 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., SMART ENERGY SYSTEM, AX=2304h) SYSTEM STAND-BY (INT 15, Advanced Power Management v1.0+, AX=5307h/CX=0001h/BX=0001h) SYSTEM TIMER 100ms HOOK (INT 5A, TI Professional PCIBM PC) SYSTEM TIMER 25ms HOOK {callout or callback} (INT 58, TI Professional PCIBM PC) SYSTEM TIMER TICK (INT 1C, TIME) SYSTEM TIMER {callout or callback} (INT 08, IRQ0) T3270 SERVICE FUNCTION (INT 61, Banyan VINES, AX=000Dh) TABLET/DIGITIZER DRIVER (INT 66, PC-DRAFT) Tandon memory mapper - Tandon MAPPER HARDWARE INITIALIZATION CHECK ??? (INT 15, AX=F200h/CX=454Dh) Tandy 1000 60 Hz RAM(Random Access Memory) See also DRAM, SRAM. REFRESH {callout or callback} (INT 0D, IRQ5) Tandy 1000-series HARD DISK {callout or callback} (INT 0A, IRQ2) Tandy 2500, Tandy 1000L series - DIGITAL SOUND??? (INT 1A, AH=7Fh) Tandy 2500, Tandy 1000L series - DIGITAL SOUND??? (INT 1A, AH=85h) Tandy 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. DATA FLAGS (MEM 0040h:00B5h) Tandy ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. 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. ID BYTE (MEM F000h:C000h) TASK COMING IN {callout or callback, protected mode, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 41, MS Windows debugging kernel, AX=000Eh) TASK DATA SEGMENTS (NOT A VECTOR!) (INT E1, DeskMate (Tandy)) TASK GOING OUT {callout or callback, protected mode, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 41, MS Windows debugging kernel, AX=000Dh) TASK MODE CONTROL (INT 21, Novell NetWare shell 3.01, AH=B5h) TASK PRIORITY REGISTER (TPR) (MEM FEE0h:0080h, Pentium, LOCAL APIC) Task Switch (OPCODE TSKSW) TBFENCE - ??? (INT B7) TBMI v1.1 only - ??? {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.} (INT 2F, Novell NetWare, AX=7A16h) TBMI v1.1 only - ??? {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.} (INT 2F, Novell NetWare, AX=7A17h) TBMI v1.1 only - RESET ??? {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.} (INT 2F, Novell NetWare, AX=7A15h) TBMI v1.1+ - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A1Ch) TBMI v1.1+ - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A1Dh) TBMI v1.1+ - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A1Eh) TBMI v1.1+, shell v3.01d - INSTALLATION CHECK??? (INT 2F, Novell NetWare, AX=7AFFh/BX=0001h/CX=4E65h/DX=7457h) TCP/IPThe protocol suite originally developed by DARPA for use on its ARPAnet network, which is now known as the Internet. See also IP, TCP. Application Binary Interface (ABI) (INT 60, TCPDRV 2.01) TCP/IPThe protocol suite originally developed by DARPA for use on its ARPAnet network, which is now known as the Internet. See also IP, TCP. Protocol Stack - WINDOWS SUPPORT??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A41h) TCP/IPThe protocol suite originally developed by DARPA for use on its ARPAnet network, which is now known as the Internet. See also IP, TCP. Protocol Stack (CALL xxxxh:xxxxh, Novell NetWare) TCP/IPThe protocol suite originally developed by DARPA for use on its ARPAnet network, which is now known as the Internet. See also IP, TCP. TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. System Call interface (INT 61, FTP(File Transfer Protocol) The standard protocol for copying files from one machine to another on a TCP/IP (Internet) network. Also the program of the same name with which a user may transfer files. Software PCIBM PC/TCP(Transmission Control Protocol) A higher level (session layer) of the TCP/IP protocol suite. See also IP, TCP/IP.) TCPIP.EXE v4.1 - GET ??? 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.} (INT 2F, Novell NetWare, AX=7A42h) TCPIP.EXE v4.1 - GET ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A43h) TCPIP.EXE v4.1 - GET ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A4Ch) TCPIP.EXE v4.1 - SET ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Novell NetWare, AX=7A44h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=01h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=02h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=04h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=05h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=06h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=07h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=0Bh) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=0Ch) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=0Fh) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=10h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=11h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=15h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=17h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=18h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=1Bh) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=1Ch) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=1Dh) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=1Eh) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=21h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=23h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=28h) TCPIP.SYS - ??? (INT 63, BW-TCP, AH=29h) TCPIP.SYS - DELETE ??? HANDLERS (INT 63, BW-TCP, AH=0Ah) TCPIP.SYS - INSTALL ??? HANDLERS (INT 63, BW-TCP, AH=09h) TCPIP.SYS - INSTALL DEFAULT ??? HANDLER (INT 63, BW-TCP, AH=0Dh) TCPIP.SYS - REMOVE ??? HANDLER (INT 63, BW-TCP, AH=22h) TCPIP.SYS - REMOVE SOCKET ??? HANDLER (INT 63, BW-TCP, AH=20h) TCPIP.SYS - SET ??? (INT 63, BW-TCP, AH=27h) TCPIP.SYS - SET DEFAULT ??? HANDLER (INT 63, BW-TCP, AH=08h) TCPIP.SYS - SET INTERNET ADDRESS??? (INT 63, BW-TCP, AH=26h) TCPIP.SYS - SET IP(Internet Protocol) The lower level (transport layer) of the TCP/IP protocol suite. See also TCP, TCP/IP. ADDRESS??? (INT 63, BW-TCP, AH=00h) TCPIP.SYS - SET SOCKET ??? HANDLER (INT 63, BW-TCP, AH=1Fh) TDA9850 BTSC Stereo/SAP Decoder (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. B4h) TDA9850 BTSC Stereo/SAP Decoder (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. B6h) TDMOUSE.EXE - ??? (INT 66, PenDOS, AH=14h) TDMOUSE.EXE - GET ??? (INT 66, PenDOS, AH=10h) TDMOUSE.EXE - SET ??? HANDLER (INT 66, PenDOS, AH=11h) TDMOUSE.EXE - SET ??? HANDLER (INT 66, PenDOS, AH=15h) TDMOUSE.EXE - SHUTDOWN??? (INT 66, PenDOS, AH=13h) TelAPI - "telattach" - ATTACH COM PORTIBM PC Portable (uses same BIOS as XT) TO/FROM TELNET SESSION (INT 14, AH=E8h) TelAPI - "telcheck" - INSTALLATION CHECK (INT 14, AX=FF00h) TelAPI - "telclose" - TERMINATE TELNET CONNECTION (INT 14, AH=E1h) TelAPI - "telioctl" - CONNECTION CONTROL (INT 14, AH=E4h) TelAPI - "tellist" - GET TELNET SESSION LIST (INT 14, AH=E7h) TelAPI - "telname" - GET AVAILABLE/INUSE STATUS FOR ALL SESSIONS (INT 14, AH=EBh) TelAPI - "telnblkopen" - CREATE TELNET CONNECTION (NON-BLOCKING) (INT 14, AH=ECh/BX=0017h) TelAPI - "telopen" - CREATE TELNET CONNECTION (BLOCKING) (INT 14, AH=E0h/BX=0017h) TelAPI - "telpoll" - POLL TELNET SESSION FOR CONNECTION COMPLETION (INT 14, AH=EDh) TelAPI - "telportosn" - GET SESSION NUMBER FOR COM PORTIBM PC Portable (uses same BIOS as XT) (INT 14, AH=E9h) TelAPI - "telread" - BUFFERED READ (INT 14, AH=E2h) TelAPI - "telreset" - RESET ALL CONNECTIONS (INT 14, AH=E5h) TelAPI - "telstatus" - GET TELNET CONNECTION STATUS INFORMATION (INT 14, AH=EAh) TelAPI - "telunload" - UNINSTALL (INT 14, AH=E6h) TelAPI - "telwrite" - BUFFERED WRITE (INT 14, AH=E3h) Telebit ACS SERIAL I/O (INT 7F) TELETYPE OUTPUT (INT 10, VIDEO, AH=0Eh) TELETYPE OUTPUT WITH ATTRIBUTE (INT 10, V20-XT-BIOS, AH=0Eh/CX=ABCDh/BP=ABCDh) TEMPORAL DECIMATION (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 88h/02h, Brooktree Bt819A) TEMPORARILY DISABLE (INT 1A, RighTime v1.1, AH=F7h) TERMINAL NUMBER (INT F7, FSBBS 2.0, AH=03h) TERMINATE (INT E6, Linux DOSEMU, AH=FFh) TERMINATE AND STAY RESIDENT (INT 21, DOS 2+, AH=31h) TERMINATE AND STAY RESIDENT (INT 27, DOS 1+, DX=FFF0h) TERMINATE AND STAY RESIDENT (INT 31, DOS32 v3.0+, AX=EE30h) TERMINATE AND STAY RESIDENT {protected mode} (INT 31, DPMIsee DOS Protected-Mode Interface 1.0+, AX=0C01h) Terminate APL(A Programming Language) An interactive, mathematically- oriented language which is well-suited to manipulating matrices. Originally using greek letters and numerous special symbols, thus requiring a special display, versions are now available which use keywords in place of the special symbols. session and return to DOS (INT 86, APL(A Programming Language) An interactive, mathematically- oriented language which is well-suited to manipulating matrices. Originally using greek letters and numerous special symbols, thus requiring a special display, versions are now available which use keywords in place of the special symbols.*PLUS/PCIBM PC) TERMINATE CONNECTION CLIENT ACTIVITY (INT 14, Connection Manager, AH=0Dh/DX=FFFFh) TERMINATE DISK EMULATION (INT 13, Bootable CD-ROM, AX=4B00h/DL=7Fh) TERMINATE DRIVER FOR HANDLE (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, AH=05h) TERMINATE INTERNAL TASK (KILL THREAD) (INT 15, MultiDOS Plus, AH=08h) TERMINATE PRINT JOB (INT 21, 10NET v5.0, AX=5E05h) TERMINATE PROGRAM (INT 20, DOS 1+) TERMINATE PROGRAM (INT 21, DOS 1+, AH=00h) TERMINATE SESSION (INT 7D, SCSILink, AH=08h) TERMINATE SOCKETS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 7A, Novell NetWare, IPX(Internetwork Packet Exchange) A low-level layer of Novell's NetWare networking software. Driver, internal, BX=000Eh) TERMINATE SPAWNED PROGRAM (INT 62, Cswitch, AH=10h) TERMINATE SPX CONNECTION (INT 7A, Novell NetWare, SPX Driver, BX=0013h) TERMINATE SUBST (INT 21, Windows95, LONG FILENAME, AX=71AAh/BH=01h) TERMINATE TASK {callout or callback} (INT 2F, DESQview v2.26+ External Dev Interface, AX=DE07h) TERMINATE USER (INT 21, LANtastic v4.1+, AX=5FCBh) TERMINATE {real mode} (INT 79, AutoCAD Device Interface, DIGITIZER, AX=0002h) TesSeRact RAM-RESIDENT PROGRAM INTERFACE (INT 2F, AX=5453h/CX=0000h) TEST (INT 68, APPC/PCIBM PC, CONNECTION CONTROL, AH=02h) Test a Specified bit (OPCODE TEST1) TEST ADDRESS (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:0004h, Cyrix 6x86MX) TEST COMMAND/STATUS (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:0005h, Cyrix 6x86MX) TEST CONTROL (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 88h/15h, Brooktree Bt819A) TEST DATA (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:0003h, Cyrix 6x86MX) TEST DRIVE CONNECTION (INT 61, Banyan VINES, AX=0004h) TEST FOR CHARACTER WAITING (INT FD, TFPCX, AH=01h) TEST FOR INBOUND CONNECTION REQUEST (INT 14, Connection Manager, AH=0Ch/DX=FFFFh) TEST IF 1541 CABLE CONNECTED (INT 14, I1541, AX=4001h) TEST MESSAGE QUEUE (INT 62, Cswitch, AH=0Ah) TEST REGISTER (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/FEh, Philips TDA8366) TEST RESOURCE SEMAPHORE (INT 15, MultiDOS Plus, AH=10h) TEST RESOURCE SEMAPHORE BY NAME (INT 15, MultiDOS Plus, AH=1Dh) TEST/CLEAR EVENT STATUS (INT 2F, PC-DOS Econet v1.05, AX=C507h) TEXT BAR (INT 10, CU Writer v1.4, AH=C3h) TEXT MENU (INT 10, CU Writer v1.4, AH=C4h) Text Mode Coefficients 2 (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/5Eh, ITT VDP 31xxB) TEXT-MODE CHARACTER GENERATOR FUNCTIONS (INT 10, VIDEO, Realtek RTVGA, AH=11h/AL=07h/AL=08h/AL=09h/AL=0Bh) TheGrab v4.60 - ??? (INT 1A, AX=E11Bh) THERMAL SENSOR (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. 30h, Pentium II/III) THERMAL SENSOR (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. 34h, Pentium II/III) THERMAL SENSOR (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. 50h, Pentium II/III) THERMAL SENSOR (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. 54h, Pentium II/III) THERMAL SENSOR (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. 90h, Pentium II/III) THERMAL SENSOR (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. 94h, Pentium II/III) Threshold (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/5Dh, ITT VDP 3108, Black Level Expander) TI SN746496 programmable tone/noise generator (PCjr) (PORTIBM PC Portable (uses same BIOS as XT) 00C0) TIGA Communications Driver v2.05 - ??? (INT 7F, AX=2525h) TIGA Communications Driver v2.05 - ??? (INT 7F, AX=5555h) TIL Xpert AIM (X.25) (INT 50) Tilt (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/59h, ITT VDP 3108, Black Level Expander) TIME AND DATE MACHINE LAST USED (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 0Eh-13h, AMSTRAD) TIME STAMP COUNTER (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 8000h:0010h, Pentium) TIME STAMP COUNTER REGISTER (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 0000h:0010h, Pentium, Pentium Pro) Timer (INT 42, Z100, Master 8259) TIMER CONTROL {partially documented} (INT 94, Media Vision PCM.COM, AL=10h/SI=8017h) TIMER DIVIDE CONFIGURATION REGISTER (MEM FEE0h:03E0h, Pentium +, LOCAL APIC) TIMER FUNCTIONS (INT F7, FSBBS 2.0, AH=05h) TIMER OVERFLOW (MEM 0040h:0070h) TIMER TICKS SINCE MIDNIGHT (MEM 0040h:006Ch) TIMER1 25ms INTERVAL INTERRUPT (INT 43, TI Professional PCIBM PC, IRQ3) Tinytalk Personal v1.10 - ??? (INT 10, AH=39h) Tinytalk Personal v1.10 - ??? (INT 10, AX=3801h) Tinytalk Personal v1.10 - ??? (INT 10, AX=3802h) Tinytalk Personal v1.10 - ??? (INT 10, AX=3806h) Tinytalk Personal v1.10 - GET ??? (INT 10, AX=3803h) Tinytalk Personal v1.10 - GET ??? (INT 10, AX=3804h) Tinytalk Personal v1.10 - GET ??? (INT 10, AX=3805h) TOGGLE IGNORE ACCELERATION CMDS (INT 33, Mouse Systems MOUSE DRIVER v7.01+, AX=0044h/CX=CDEFh) TOGGLE INTENSITY/BLINKING BIT (JrIBM PCjr, PSIBM PS/2, any model, TANDY 1000, 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.) (INT 10, VIDEO, AX=1003h/BH=00h) TOGGLE RESOLUTION DOUBLING (INT 33, Mouse Systems MOUSE DRIVER v7.01+, AX=0045h/CX=CDEFh) Token Ring (adapter 1) (PORTIBM PC Portable (uses same BIOS as XT) 0A20-0A23) TOPS INTERFACE (INT 5C) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "BEGINC" - BEGIN CRITICAL REGION (INT 15, AX=101Bh) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "DISPEROR" - POP-UP ERROR WINDOW (INT 15, AX=101Fh) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "ENDC" - END CRITICAL REGION (INT 15, AX=101Ch) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "FREEBIT" - UNDEFINE A 2ND-LEVEL INTERRUPT HANDLER (INT 15, AX=1014h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "GETBIT" - DEFINE A 2ND-LEVEL INTERRUPT HANDLER (INT 15, AX=1013h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "GETBUF" - GET VIRTUAL SCREEN INFO (INT 15, AX=1024h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "GETMEM" - ALLOCATE "SYSTEM" MEMORY (INT 15, AX=1001h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "GETVER" - GET VERSION (INT 15, AX=1022h/BX=0000h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "ISOBJ" - VERIFY OBJECT HANDLE (INT 15, AX=1016h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "LOCATE" - FIND WINDOW ATIBM PC AT A GIVEN SCREEN LOCATION (INT 15, AX=1018h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "OSTACK" - SWITCH TO TASK'S INTERNAL STACK (INT 15, AX=101Ah) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "PAUSE" - GIVE UP CPU(Central Processing Unit) The microprocessor which executes programs on your computer. TIME (INT 15, AX=1000h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "PGMINT" - INTERRUPT ANOTHER TASK (INT 15, AX=1021h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "POSWIN" - POSITION WINDOW (INT 15, AX=1023h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "PRINTC" - DISPLAY CHARACTER/ATTRIBUTE ON SCREEN (INT 15, AX=1003h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "PUTMEM" - DEALLOCATE "SYSTEM" MEMORY (INT 15, AX=1002h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "SETBIT" - SCHEDULE ONE OR MORE 2ND-LEVEL INTERRUPTS (INT 15, AX=1015h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "SOUND" - MAKE TONE (INT 15, AX=1019h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "START" - START TASK (INT 15, AX=101Eh) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "STOP" - STOP TASK (INT 15, AX=101Dh) TopViewTopView, DESQview, TaskView, OmniView, other compatibles - "USTACK" - SWITCH BACK TO USER'S STACK (INT 15, AX=1025h) TopViewTopView, DESQview, TaskView, OmniView, other compatibles commands (INT 15, AH=11h/AL=17h) Topware Network Operating System - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 7A) TopWare Network OS v5.10+ - GET "SHOW" TYPE (INT 2F, AX=FF27h) TopWare Network OS v5.10+ - SET CONTROL NUMBER OF "SHOW" SCREEN (INT 2F, AX=FF16h) Toshiba laptop - GET ??? DATA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 42, AX=7501h) Toshiba laptops - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 42, AX=7500h/BL=01h) Toshiba laptops - ??? {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 42, AX=7504h) Toshiba laptops - SET ??? DATA {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 42, AX=7502h) TOTAL DRIVES, FIRST CONTROLLER ONLY (MEM 0040h:0074h, WD1002-27X SuperBIOS) TOTAL FIXED DRIVES, BOTH CONTROLLERS (MEM 0040h:0075h, WD1002-27X SuperBIOS) TOTAL MEMORY (high byte) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 3Dh, Quadtel HT12 BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. 03.05.03) TOTAL MEMORY (low byte) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 3Ch, Quadtel HT12 BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly. 03.05.03) TP STARTED (INT 68, APPC/PCIBM PC, AH=03h) TRACE MENU (INT 50, PCIBM PC Thuis Organizer Shell, AX=0010h) TRANSACTION PROCESSING (INT 68, APPC/PCIBM PC, AH=04h) TRANSACTION STATUS (INT 21, Novell NetWare, TRANSACTION TRACKING SYSTEM, AX=C704h) TRANSFER MESSAGE DATA (INT 68, APPC/PCIBM PC, AH=05h) TRANSLATE 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. PARAMETER BLOCK TO DRIVE PARAM BLOCK (INT 21, DOS 2+ internal, AH=53h/CX=4558h/DX=4152h) TRANSLATE DATA (INT 7A, IBMInternational Busiuness MachinesInternational Busiuness Machines) A hardware, software and other service technology company founded in 1911. 3270 Workstation Program API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AH=09h/BX=8020h/CX=00FFh) TRANSLATE ERROR CODE TO ERROR STRING (INT 14, ARTICOM, AX=8003h) TRANSLATE ERROR INTO ASCII STRING (SELECTED PORTIBM PC Portable (uses same BIOS as XT)) (INT 61, Banyan VINES, AX=0007h/BX=0009h) TRANSLATE ERROR INTO ASCII STRING (INT 61, Banyan VINES, AX=0007h/BX=0006h) TRANSLATE PATH (INT 21, LANtastic v3+, AX=5FB3h) 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.} (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, AX=1C0Eh) TRANSMIT BLOCK, NO HANDSHAKE (INT 17, Shamrock Software NET.24 v3.11+, AX=2402h) TRANSMIT BUFFER CONTROL (INT 6B, NPC NCSI EXTENDED SERIAL I/O, AH=1Dh) TRANSMIT CHARACTER (INT 14, MultiDOS Plus, AH=21h) TRANSMIT COMMAND, WITH HANDSHAKE (INT 17, Shamrock Software NET.24 v3.11+, AX=2409h) TRANSMIT FRAME (INT 7C, SK-UPPS Data Link Interface API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AX=0006h) TRANSMIT FRAME RELEASE (INT 7C, SK-UPPS Data Link Interface API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AX=0013h) TRANSMIT NO WAIT (INT 14, FOSSIL(Fido/Opus/Seadog Standard Interface Layer) A standardized API for performing serial I/O, originally used by the Fido and Opus bulletin- board software and Seadog bulletin-board mailer, but now in wider use., AH=0Bh) TRANSMIT RAW (KISS) FRAME (INT 7F, G8BPQ v4.00+, HOST MODE, AH=0Ah) TRANSMIT SINGLE CHARACTER TO REMOTE (INT 17, Shamrock Software NET.24 v3.11+, AX=240Bh) TRANSMIT STATUS (INT 6B, NPC NCSI EXTENDED SERIAL I/O, AH=1Bh) TRANSMITTER ENTRY POINT (INT 7F, SBS WinRun 1.00) TRANSPOSE MUSIC (INT 80, SoundBlaster SBFM driver, BX=0005h) 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 (PORTIBM PC Portable (uses same BIOS as XT) 02B0-02BF) TRAP I/O PORTIBM PC Portable (uses same BIOS as XT) {protected mode} (INT 2C, Cloaking, AX=002Eh) TRIGGER EVENT (INT 15, MultiDOS Plus, AX=1E01h) TRIGGER MODE REGISTER (TMR) (MEM FEE0h:0180h, Pentium +, LOCAL APIC) TRIGGER SEMAPHORE (INT 62, Cswitch, AH=04h) Tsoft NFSDRVR - ??? (INT 2F, AX=CC01h) Tsoft NFSDRVR - ??? (INT 2F, AX=CC02h) Tsoft NFSDRVR - ??? (INT 2F, AX=CC03h) Tsoft NFSDRVR - ??? (INT 2F, AX=CC04h) Tsoft NFSDRVR - ??? (INT 2F, AX=CC05h) Tsoft NFSDRVR - ??? (INT 2F, AX=CC06h) TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. INSTALLATION CHECK (INT 21, DIET v1.43e, AX=37D0h/BX=899Dh) TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. INSTALLATION CHECK (INT 21, XPACK v1.52+, AX=37A0h/BX=6A6Dh) TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. INSTALLATION CHECK (INT 2F, CS_TSR specification, AX=8000h) TTS ABORT TRANSACTION (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTS BEGIN TRANSACTION (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTS END TRANSACTION (INT 21, Novell NetWare, AX=F222h) TTS GET APPLICATION THRESHOLDS (INT 21, Novell NetWare, AX=F222h) TTS GET CONTROL FLAGS (INT 21, Novell NetWare, AX=F222h) TTS GET WORKSTATION THRESHOLDS (INT 21, Novell NetWare, AX=F222h) TTS IS AVAILABLE (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTS SET APPLICATION THRESHOLDS (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTS SET CONTROL FLAGS (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTS SET WORKSTATION THRESHOLDS (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTS TRANSACTION STATUS (INT 21, Novell NetWare, AX=F222h/DX=0000h) TTY OUTPUT (INT 49, TI Professional PCIBM PC, CRT, AH=0Eh) Tube and Picture Measurement Control (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/25h, ITT VDP 3108) Tube Measurement Line (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/7Fh, ITT VDP 3108) TUNER STATUS (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. C2h/00h, Philips FI1236MK2 Tuner) TURBO BUS VIDEO (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. (PicoPower)) TURBO MODE CONTROL (INT 15, Juko UNIQUE UX BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly., AH=DFh) TURBO MODE CONTROL (PORTIBM PC Portable (uses same BIOS as XT) 0068, C&T CHIPSETS) TURBO/RESET CONTROL REGISTER (PORTIBM PC Portable (uses same BIOS as XT) 0CF9, Intel chipsets) TURN 386MAX OFF {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 21, Qualitas 386MAX v6.01+, AX=4403h) TURN 386MAX ON {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 21, Qualitas 386MAX v6.01+, AX=4403h) TURN ACTIVITY INDICATOR OFF (INT 2F, FreeDOS, FDAK-DDT, AX=12FFh/BL=06h) TURN ACTIVITY INDICATOR ON (INT 2F, FreeDOS, FDAK-DDT, AX=12FFh/BL=05h) TURN BACKLIGHT ON/OFF (INT 10, HUNTER 16, AH=78h) TURN DEBUGGING OFF (INT 2F, CD-ROM, AX=1507h) TURN DEBUGGING ON (INT 2F, CD-ROM, AX=1506h) TURN FLAT PANEL ON/OFF (INT 10, Chips & Technologies Extended BIOS(Basic Input/Output System) A set of standardized calls giving low-level access to the hardware. The BIOS is the lowest software layer above the actual hardware and serves to insulate programs (and operating systems) which use it from the details of accessing the hardware directly., AX=5F54h) TURN OFF ALL DRIVES (INT 4D, TI Professional PCIBM PC, DISK, AH=0Bh) TURN OFF AltZ TOGGLE (INT 15, MultiDOS Plus, AH=11h) TURN OFF DTR (INT 14, COMM-DRV v14.0, AH=88h) TURN OFF FILE SHARING CHECKS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, DOS 4 only SHARE internal, AX=1081h) TURN OFF GRAPHICS SCREEN (INT 2F, QRIP/TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination., AX=AC02h/DI=1092h) TURN OFF MAGNIFICATION (INT 49, MAGic v1.16+, AX=0002h) TURN OFF ONLINE MODE (INT 2F, WinDOS v2.11, AX=AF02h) TURN OFF REMOTE PRINTER {callout or callback, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, NETWORK REDIRECTOR, AX=1124h) TURN OFF REVERSE VIDEO (INT 10, VIDEO, Compaq Extensions, AX=BF0Ah) TURN OFF RTS (INT 14, COMM-DRV v14.0, AH=8Ah) TURN OFF SOUND {partially documented} (INT 60, HP 95LX System Manager, DI=0803h) TURN OFF SPEAKER (INT 48, TI Professional PCIBM PC, SPEAKER DEVICE, AH=04h) TURN OFF SYSTEM (INT 15, Advanced Power Management v1.2, AX=5307h/CX=0003h/BX=0001h) TURN OFF TAPE DRIVE'S MOTOR (PCIBM PC and PCjr only) (INT 15, CASSETTE, AH=01h) TURN OFF TASK SWITCHING (INT 21, DoubleDOS, AH=EAh) TURN OFF TASK SWITCHING (INT 21, DoubleDOS, AH=FAh) TURN OFF THE SCREEN IMMEDIATELY (INT 15, HP OmniShare, STANDBY.COM, AX=BA24h) TURN OFF TIMESHARING (INT FA, DoubleDOS) TURN OFF VERBOSE MODE (INT 2F, SWELL.EXE, AX=CD04h) TURN ON AltZ TOGGLE (INT 15, MultiDOS Plus, AH=12h) TURN ON DTR (INT 14, COMM-DRV v14.0, AH=87h) TURN ON FILE SHARING CHECKS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, DOS 4 only SHARE internal, AX=1080h) TURN ON GRAPHICS SCREEN (INT 2F, QRIP/TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination., AX=AC03h/DI=1092h) TURN ON MAGNIFICATION (INT 49, MAGic v1.16+, AX=0001h) TURN ON ONLINE MODE (INT 2F, WinDOS v2.11, AX=AF01h) TURN ON REVERSE VIDEO (INT 10, VIDEO, Compaq Extensions, AX=BF09h) TURN ON RTS (INT 14, COMM-DRV v14.0, AH=89h) TURN ON SPEAKER (INT 48, TI Professional PCIBM PC, SPEAKER DEVICE, AH=03h) TURN ON TAPE DRIVE'S MOTOR (PCIBM PC and PCjr only) (INT 15, CASSETTE, AH=00h) TURN ON TASK SWITCHING (INT 21, DoubleDOS, AH=EBh) TURN ON TASK SWITCHING (INT 21, DoubleDOS, AH=FBh) TURN ON THE SCREEN IMMEDIATELY (INT 15, HP OmniShare, STANDBY.COM, AX=BA23h) TURN ON TIMESHARING (INT FB, DoubleDOS) TURN ON VERBOSE MODE (INT 2F, SWELL.EXE, AX=CD05h) TURN ON/OFF (INT 21, PCMag PCMANAGE/DCOMPRES, AH=DCh) TURN PROFILING OFF (INT 60, SYS_PROF.EXE, AH=01h) TURN PROFILING ON (INT 60, SYS_PROF.EXE, AH=02h) TURN SYSTEM OFF (INT 61, Atari Portfolio, AH=2Dh) TURN 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. ON/OFF (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., Everex, AX=4FFFh) TURN VIDMEM OFF (INT 2F, WinDOS v2.11, AX=AF04h) TURN VIDMEM ON (INT 2F, WinDOS v2.11, AX=AF03h) TV Standard, Read (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 86h/28h/F3h, ITT VPX 32xx, FP) TV Standard, Write (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/28h/F2h, ITT VPX 32xx, FP) TYPE OF FIRST 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) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 67h, 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) (CMOS(Complementary Metal-Oxide-Semiconductor) A type of integrated circuit design known for its low power consumption. 70h, AWARD) UltraVision - GET POINTER TO ??? (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.) (INT 10, VIDEO, AX=CD0Fh) UNBLANK MONITOR (INT 2F, AD-DOS, AX=C009h) UNBLANK THE SCREEN (INT 11, Blank-It Screen Blanker, AX=0225h/BX=6907h) UNCONDITIONALLY STOP SOUND (INT 1A, SND, AX=FF05h) Undefined Instruction (OPCODE UD) Undefined Instruction (OPCODE UD2) UNDELETE PENDING DELETE FILE (INT 21, Novell DOS 7, AX=4380h) Undershoot/Overshoot (I2C(also IIC; the "2" is superscripted) Inter-Integrated Circuit Bus -- A moderate-speed serial communications bus originally invented by Philips in the early 1980s for consumer-electronics applications, such as inter-chip communication in a television set or high-end stereo. The I2C bus has recently appeared on PCs in video capture boards and similar devices, as well as (surprisingly) SDRAM DIMMs (for the on-board serial EEPROM). The ACCESS.bus is a derivative of the I2C bus which forms the physical layer of the Universal Serial Bus. Similary, the SMBus (System Management Bus) also uses I2C as its physical layer. 8Ah/69h, ITT VDP 3108, Luma Peaking Filter) UNDIM SCREEN 'MANUALLY' (INT 14, DimVGA v2.0+, AX=AA09h) UNDO PREVIOUS MEMORY ALLOCATION or DMAsee Direct Memory Access BUFFER (INT 31, DOS32 v3.0+, AX=EE40h) UNHOOK (INT 16, PCIBM PC Tools v5.1+ BACKTALK, AX=6969h/BX=6968h) UNHOOK 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. INTERRUPT (INT 83, JM Pro Tracker v5.0, AH=17h) UNHOOK INTERRUPT (UNINSTALL) {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 6D, Matrox Multiple Monitor Support v1.0, AX=BDFFh) UNHOOK INTERRUPTS (INT 13, FAST! v4.02+, AX=8007h/CX=6572h/DX=1970h) UNHOOK INTERRUPTS AND TURN OFF DMAsee Direct Memory Access {partially documented} (INT 94, PCM driver, SI=000Ah) UNHOOK INTERRUPTS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 16, PCIBM PC Tools v7+ CPSCHED, AX=FEDCh) UNHOOK INTERRUPTS {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 17, Emulaser ELTSR, AX=0501h) UNHOOK MOUSE IRQ(Interrupt ReQuest) A hardware line connected to the interrupt controller chip which signals that a CPU interrupt should be generated. {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 33, InfoTrack IMOUSE.COM, AX=8800h) UNHOOK TIMER INTERRUPT (INT 62, BW-TCP, HW DRIVER (ETHDEV.SYS), AH=0Ah) UNHOOK {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 16, PCIBM PC Tools v5.1-8.0 DESKTOP, AX=FFDCh) UNIDENTIFIED DRIVE SPECIFIC FUNCTION (INT 61, Banyan VINES, AX=0004h) UNIDENTIFIED FUNCTION (INT 61, Banyan VINES, AX=0004h) Unimplemented (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/FAh, ITT VPX 32xx) UNIMPLEMENTED (INT 15, DESQview, AX=DE09h) UNIMPLEMENTED (INT 17, PCIBM PC Paint Plus 2.0, PRINTER DRIVER, AX=2007h) unimplemented (MSR(Model-Specific Register) Additional, indirectly-accessible, registers containing control or status information about various aspects of the processor such as caches, performance counters, and the like. These registers, accessible via the RDMSR and WRMSR instructions, were added with the Pentium and later-model 486 processors. 8000h:0003h, Pentium) UNIMPLEMENTED IN DV 2.x (INT 15, TopViewTopView, DESQview, TaskView, OmniView, other compatibles, AH=10h/AL=04h) UNIMPLEMENTED IN DV 2.x (INT 15, TopViewTopView, DESQview, TaskView, OmniView, other compatibles, AX=1017h) UNIMPLEMENTED IN DV v2.00+ (INT 15, TopViewTopView, DESQview, TaskView, OmniView, other compatibles, AX=1020h) Unimplemented {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.} (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/23h, ITT VPX 32xx) Unimplemented {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.} (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/24h, ITT VPX 32xx) Unimplemented {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.} (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/25h, ITT VPX 32xx) Unimplemented {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.} (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/32h, ITT VPX 32xx) Unimplemented {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.} (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/35h, ITT VPX 32xx) Unimplemented {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.} (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/36h, ITT VPX 32xx) Unimplemented {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.} (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/37h, ITT VPX 32xx) Unimplemented {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.} (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/38h, ITT VPX 32xx) Unimplemented {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.} (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/3Bh, ITT VPX 32xx) Unimplemented {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.} (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/3Ch, ITT VPX 32xx) Unimplemented {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.} (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/3Dh, ITT VPX 32xx) Unimplemented {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.} (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/D9h, ITT VPX 32xx) Unimplemented {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.} (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/DDh, ITT VPX 32xx) Unimplemented {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.} (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/DEh, ITT VPX 32xx) Unimplemented {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.} (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/DFh, ITT VPX 32xx) UNINSTALL (INT 10, ATI M64VBE.COM, AX=4FFFh/BX=364Dh/CX=5634h) UNINSTALL (INT 10, Show Partner F/X v3.6, AH=55h) UNINSTALL (INT 14, Microsoft Systems Journal TSRCOMM INT14, AX=0408h) UNINSTALL (INT 14, MX5 Extended 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., AX=E005h) UNINSTALL (INT 14, VIDEO 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., AX=8103h) UNINSTALL (INT 16, TEXTCAP 2.0, AX=4253h) UNINSTALL (INT 17, Brother P-Touch, AX=4B01h) UNINSTALL (INT 21, XPACK v1.52+, AX=37A1h/BX=6A6Dh) UNINSTALL (INT 2D, AMIS v3.0+, AL=02h) UNINSTALL (INT 2E, 4DOS v2.x-3.03 SHELL2E.COM, BX=E22Eh) UNINSTALL (INT 2F, Explosiv v2.00+, AX=C052h) UNINSTALL (INT 2F, FreeDOS, FDAK-DDT, AX=12FFh/BL=07h) UNINSTALL (INT 2F, Jim Harper's CD-ROM redirector SCSI(Small Computer Systems Interface) A system-independent expansion bus typically used to connect hard disks, tape drives, and CD-ROMs to a computer. A host adapter connects the SCSI bus to the computer's own bus. See also ESDI, IDE. driver, AX=7F03h) UNINSTALL (INT 2F, MODRES, AX=8222h) UNINSTALL (INT 2F, PCL-838.EXE, AX=D201h) UNINSTALL (INT 2F, Phantom2 v1.1+, AX=E102h) UNINSTALL (INT 2F, Player's Tool 3.996b+, AH=AAh) UNINSTALL (INT 2F, QRIP/TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination., AX=ACFFh/DI=1092h) UNINSTALL (INT 2F, RESPLAY, AX=8202h) UNINSTALL (INT 2F, SWELL.EXE, AX=CD06h) UNINSTALL (INT 2F, WHOA!.COM, AX=8901h) UNINSTALL (INT 2F, ZyXEL ZFAX v1.x, AX=DA01h) UNINSTALL (INT 2F, ZyXEL ZFAX v2+, AX=DB01h) UNINSTALL (INT 60, RIFS, CLIENT, AX=0001h) UNINSTALL (INT 60, RIFS, SERVER, AX=0009h) UNINSTALL (INT 66, MicroHelp Stay-Res/Stay-Res Plus, AX=FFFEh/BX=FFFEh) UNINSTALL (INT 66, MIDPAK, AX=0700h) UNINSTALL (INT 6F, Clara Empricost, TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. Version, AX=636Fh/BX=6D70h/CX=6F73h) UNINSTALL (INT 7E, SBOS v3.82, AX=00FEh) UNINSTALL (INT 7F, HDILOAD Mach32 Adapter Interface, AX=0106h) UNINSTALL (INT 7F, TIGA Communications Driver v2.05, AX=1234h) UNINSTALL DRIVER (INT 10, VESA(Video Electronics Standards Association) An industry group which sets both hardware and software standards and recommendations. The term VESA is also used to denote compliance with the VESA SuperVGA BIOS Extensions, a standard set of video BIOS functions for accessing video modes of higher resolution than those defined by IBMInternational Busiuness Machines. VBE(VESA BIOS Extensions) The common software interface for video cards providing support for high resolution and bit depth./AI (Audio Interface), AX=4F13h/BX=0005h) UNINSTALL IRQ3 HANDLER (INT 2F, AVATAR(Advanced Video Attribute Terminal Assembler and Recreator) A set of control codes which may be used to affect the output of characters to the screen on systems equipped with an appropriate driver. Similar in intent to ANSI sequences, AVATAR has shorter command sequences and provides additional PC-specific functionality. AVATAR is primarily used by the Opus and Maximus bulletin board systems (it was designed by one of the developers of the Opus system). Serial Dispatcher, AX=1A62h/BX=4156h) UNINSTALL IRQ4 HANDLER (INT 2F, AVATAR(Advanced Video Attribute Terminal Assembler and Recreator) A set of control codes which may be used to affect the output of characters to the screen on systems equipped with an appropriate driver. Similar in intent to ANSI sequences, AVATAR has shorter command sequences and provides additional PC-specific functionality. AVATAR is primarily used by the Opus and Maximus bulletin board systems (it was designed by one of the developers of the Opus system). Serial Dispatcher, AX=1A63h/BX=4156h) UNINSTALL PCW.COM AND FREE MEMORY (INT 21, PCW Weather Card interface, AX=8080h) UNINSTALL RESIDENT DEVICE DRIVER {real mode} (INT 2F, InterWave Game API(Application Program[ming] Interface) The defined set of calls which a program may make to interact with or request services of the operating system or environment under which it is running. Because the inputs and outputs of the calls are well-defined, a program using the API can continue using the identical calls even if the internal organization of the program providing the API changes., AX=CD05h) UNINSTALL TSR(Terminate and Stay Resident) A program which remains in memory after terminating in order to provide services to other programs or the user. The name comes from the name of the DOS function call used to remain in memory after termination. (INT 21, DIET v1.43e, AX=37DFh/BX=899Dh) UNINSTALL {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.} (INT 10, Player's Tool 3.0, AH=AAh) UNINSTALL {real mode, undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 2F, Borland C++ 3.0 DPMILOAD.EXE, AX=FB42h/BX=0015h/CX=0001h) UNINSTALL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 05, PSPS v2.01, AX=554Eh) UNINSTALL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 13, QUICKCACHE II v4.20, AH=26h) UNINSTALL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 16, PCIBM PC Tools v8+ CPTASK, AX=FF80h/BX=4350h/CX=5354h) UNINSTALL {undocumentedInformation about a product which is not publicly available from the manufacturer, and must be determined by reverse-engineering (disassembly, trial-and-error, etc.). Undocumented information tends to change -- often dramatically -- between successive revisions of a product, since the manufacturer has no obligation to maintain compatibility in behavior which is not explicitly stated.} (INT 16, PCIBM PC Tools v8+ VSAFE, VWATCH, AX=FA01h/DX=5945h)