IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)
IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF) IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)
GLOSSARY 1. Address Buss: A set of wires or signals carrying the binarycoded address from the Intel-8088 microprocessor throughout the rest of the IBM Personal Computer System Unit. 2. AEN: Address Enable. (Refer to System Board I/O Channel Descriptions). 3. ALE: Address Latch Enable. (Refer to System Board I/O Channel Descriptions). 4. Analog: (1) Pertaining to representation by means of continuously variable physical quantities. (2) Contrast with digital. 5. A!N: Alphanumeric: Pertaining to a character set that contains letters, digits, and usually other characters, such as punctuation marks. Syonymous with alphameric. 6. AO-AI9: Address bits 0-19. (Refer to System Board I/O Channel Descriptions). 7. APA: All points addressable graphics. 8. ASCII: American Standard Code of Information Interchange. The standard code, using a coded character set consisting of7 bit coded characters (8 bits including parity check), used for information interchange among data processing systems, data communication systems and associated equipment. The ASCII set consists of control characters and graphic characters. 9. Assembler: A computer program used to assemble. Synonymous with assembly program. 10. BASIC: (Beginner's all-purpose symbolic instruction code). A programming language with a small repetoire ofcommands and a simple syntax, primarily designed for numerical application. 11. BAUD: (1) A unit of signaling speed equal to the number of discrete conditions or signal events per second in Morse code, one bit per second in a train of binary signals, and one 3-bit value per second in a train of signals each ofwhich can assume one of eight different states. (2) In asynchronous transmission, the unit ofmodulation rate corresponding to one unit ofinterval per second, i.e. if the duration of the unit interval is 20 milliseconds, the modulation rate is 50 baud. G-l
12. Binary: (1) Pertaining to a selection, choice, or condition that that has two possible values or states. (2) Pertaining to a fixed radix numeration system having a radix of two. 13. BIOS: Basic Input/Output System. 14. Bootstrap: A technique or device designed to bring itself into a desired state by means ofit's own action, e.g. a machine routine whose first few instructions are sufficient to bring the rest of itself into the computer from an input device. 15. Buffer: An area of storage that is temporarily reserved for use in performing an input/output operation, into which data is read or from which data is written. Synonymous with I/O area. A portion of storage for temporarily holding input or output data. 16. Bus: One or more conductors used for transmitting signals or power. 17. Byte: (1) A binary character operated upon as a unit and usually shorter than a computer word. (2) The representation of a character. 18. CLK: Clock. (Refer to System Board I/O Channel Descriptions). 19. Code: (1) A set ofunambiguous rules specifying the manner in which data may be represented in a discrete form. Synonymous with coding scheme. (2) A set of items such as abbreviations representing the members of another set. (3) Loosely, one or more computer programs, or part of a computer program. (4) To represent data or a computer program in a symbolic form that can be accepted by a data processor. 20. Computer: A data processor that can perform substantial computation, including numerous arithmetic operations, or logic operations, without intervention by a human operator during the run. 21. CPS: Characters per second. 22. CRC: The cyclic redundancy check character. 23. CRT: (1) A Cathode ray tube display. (2) A display device, such as the IBM Monochrome Display, that uses a cathode ray tube. 24. CTS: Conversational Terminal System. (2) Clear to Send. Associated with modem control. 25. DACKO-DACK3: DMA Acknowledge 0 to 3. (Refer to System Board I/O Channel Description). G-2
- Page 309 and 310: SYSTEM BOARD (PROCESSOR AND SUPPORT
- Page 311 and 312: SYSTEM BOARD (DEVICE DECODES) I~ i
- Page 313 and 314: SYSTEM BOARD (ROS AND BUS DRIVER) ~
- Page 315 and 316: Ṉ-0 SYSTEM BOARD (DYNAMIC MEMORY
- Page 317 and 318: SYSTEM BOARD (KEYBOARD/SENSE/CONTRO
- Page 319 and 320: \:j I " m < -tv CI:I Q » :11:1 Q P
- Page 321 and 322: I- z ..... 0 t:::I 0 ... ;:; ~ r
- Page 323 and 324: tl I-0'1 ," r-" "~ (S"T" 'RESET I E
- Page 325 and 326: ~ ~ ~ ~ ~~ IBM MONOCHROME DISPLAY A
- Page 327 and 328: tj III ~ N 14L.517') ~ 0 __________
- Page 329 and 330: ~ N s: N CI CO J ~ CI 2 A Y 18 n DA
- Page 331 and 332: IBM MONOCHROME OISPLAY DANGER HAZAR
- Page 333 and 334: COLOR/GRAPHICS MONITOR ADAPTER ~
- Page 335 and 336: 1'. -- COLOR/GRAPHICS MONITOR ADAPT
- Page 337: 1 COLOR/GRAPHICS MONITOR ADAPTER :;
- Page 341 and 342: PARALLEL PRINTER ADAPTER D-34
- Page 343 and 344: t:l +AEN AND U'I GATE , ., + ENABL
- Page 345 and 346: t:! W CI CHARGE PUMP 00 AOI en U ~I
- Page 347 and 348: 5%" DISKETTE DRIVE .., CI -N ... ';
- Page 349 and 350: t:j ~ N o W z N ;:1'1: ~ aZKO: ." R
- Page 351 and 352: 32KB MEMORY EXPANSION d-w- I NNO) 3
- Page 353 and 354: 64 ~~ MEMORY EXPANSION ~~ D-46
- Page 355 and 356: BO~ t::l azq +';V[)( +'>vOC 'f c+o;
- Page 357 and 358: D-50 NOTES
- Page 359: IBM Monochrome Display Size: Length
- Page 363 and 364: 40. Hertz (Hz.): A unit offrequency
- Page 365 and 366: 70. OR: A logic operator having the
- Page 367 and 368: G-8 NOTES
- Page 369 and 370: Other Related Publications 7. NATIO
- Page 371 and 372: Asynchronous Communications Adapter
- Page 373 and 374: Character Codes 3-11 Generator 2-
- Page 375 and 376: DIN (Connectors) 2-5 DIP (Dual In-L
- Page 377 and 378: Game Control Adapter (continued) C
- Page 379 and 380: I/O (Input/Output) Address Map 2-33
- Page 381 and 382: Microsecond 2-3 Mnemonic B-18 Mod
- Page 383 and 384: Parameters, 6845 Initialization 2-4
- Page 385 and 386: Read/Write Memory (continued) Grap
- Page 387 and 388: s Scan Codes 2-17 Screen 2-43 Sche
- Page 389 and 390: u Unit Specifications Appendix E
- Page 391 and 392: 1-22 NOTES
- Page 393: III"I UNITED NO POSTAGE NECESSARY
12. Binary: (1) Pertaining to a selection, choice, or condition that<br />
that has two possible values or states. (2) Pertaining to a fixed<br />
radix numeration system having a radix of two.<br />
13. BIOS: Basic Input/Output System.<br />
14. Bootstrap: A technique or device designed to bring itself into a<br />
desired state by means ofit's own action, e.g. a machine routine<br />
whose first few instructions are sufficient to bring the rest of<br />
itself into the computer from an input device.<br />
15. Buffer: An area of storage that is temporarily reserved for use in<br />
performing an input/output operation, into which data is read or<br />
from which data is written. Synonymous with I/O area. A<br />
portion of storage for temporarily holding input or output data.<br />
16. Bus: One or more conductors used for transmitting signals or<br />
power.<br />
17. Byte: (1) A binary character operated upon as a unit and<br />
usually shorter than a computer word. (2) The representation of<br />
a character.<br />
18. CLK: Clock. (Refer to System Board I/O Channel<br />
Descriptions).<br />
19. Code: (1) A set ofunambiguous rules specifying the manner in<br />
which data may be represented in a discrete form. Synonymous<br />
with coding scheme. (2) A set of items such as abbreviations<br />
representing the members of another set. (3) Loosely, one<br />
or more computer programs, or part of a computer program.<br />
(4) To represent data or a computer program in a symbolic form<br />
that can be accepted by a data processor.<br />
20. Computer: A data processor that can perform substantial<br />
computation, including numerous arithmetic operations, or<br />
logic operations, without intervention by a human operator<br />
during the run.<br />
21. CPS: Characters per second.<br />
22. CRC: The cyclic redundancy check character.<br />
23. CRT: (1) A Cathode ray tube display. (2) A display device,<br />
such as the <strong>IBM</strong> Monochrome Display, that uses a cathode ray<br />
tube.<br />
24. CTS: Conversational Terminal System. (2) Clear to Send.<br />
Associated with modem control.<br />
25. DACKO-DACK3: DMA Acknowledge 0 to 3. (Refer to<br />
System Board I/O Channel Description).<br />
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