IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

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LOC OBJ LINE SOURCE ~ F936 7403 5194 JZ W17 JUtlP IF TOO MANY RETRIES F938 E962FF 5195 JMP W4 JUMP IF NOT TOO MANY RETRIES F938 5196 10117: NO VALID DATA FOUND 5197 j------ NO DATA FROM CASSETTE ERROR, I.E. TIMEOUT 5198 F938 5E 5199 POP 51 RESTORE REGS F93C 59 5200 POP CX lRESTORE REGS F93D 58 5201 POP BX F93E 2B02 5202 SUB OX,OX ,ZERO NUMBER OF BYTES READ F940 8404 5203 HOV AH,04H ; TIME OUT ERROR I NO LEADER) F942 50 5O 1 F950 F5 5212 CHC F951 C3 5213 RET iFItUSHED 5214 READ_BLOCK ENOP 5215 ; ---------------------------------------- F952 5216 PROC NEAR 5217 PURPOSE: 5218 TO READ A BYTE FROM CASSETTE 5219 5220 ON EXIT REG AL CONTAINS READ DATA BYTE 5221 F952 53 5222 PUSH BX ,SAVE REGS BX,CX F953 51 5223 PUSH CX F954 BI08 52
LOC OBJ LINE SOURCE F97E EBF9 5268 "20 5269 ENDP 5270 ; ------------------------------------------ f9BO 5271 NEAR 5272 PURPOSE: 5273 TO COMPUTE TIME TIll ~EXT DATA 5274 TRANSITION (EDGE) 5275 5276 ; ON ENTRY: 5Z77 ; EDGE_CNT CONTAINS LAST EDGE COUNT 5278 5279 ; ON EXIT: 52&0 ; AX CONTAINS OLD LAST EDGE COUNT 5281 I BX CONTAlNS PULSE WIDTH {HALF Bn I 5282 ; ------------- ---------.--------------. F'eo 696400 5283 MOV ex. 100 j SET TIME TO WAn FOR BIT F983 BA266BOO 5284 MOV AH.LAST_VAl JGET PRESENT INPUT VALUE F987 5285 Nee: ~ Fm-H-BIT F987 E462 5286 IN AL.POIH_C ; INPUT DATA BIT f989 2410 5237 AND AL,OlOH ;MASK OFF EXTRANEOUS BITS F988 3AC4 5288 CMP AL,AH ;SAME AS BEFORE? FgeD ElFS 5269 LOOPE "22 ; LOOP TILL IT CHANGES F9SF A26BOO 5290 MOV LAST_VAL,AL JUPDATE LAST_VAL WITH NEW VALUE F992 BOOD 5291 MOV Al;O jREAD TIMER'S COUNTER eONHA.ND F9'94 E643 5292 OUT TIM_CTL,AL ; LATCH COUNTER F996 E440 5293 HI AL, TIMERO ;GET LS eYTe F998 8AEO 52'4 I10Y AH,Al ,SAVE IN Aft fY.,,,, 1:'"0 SUS IN Al,TIMERO ,GET HS BYTE F99C 8bC" 5296 XCHG Al,AH ,XCHG Al,AH F99E 8Bl£6700 5n7 MOV BX,EDGE_CNT ; BX GETS LAST EDGE COUNT F942 2B08 5298 SUB BX,AX ; SET BX EQUAL TO HALF BIT PERIOD F9"4 1\36700 5299 MOV EDGE_CNT ,AX ; UPDATE EDGE CO""'T; F9A7 Cl 5300 RET 5301 !fEAD_HALF_BIT ENDP 5302 ;--------------------_ ..._--_.._------------ F9A8 5303 PROC NEAR 5304 5305 ; WRITE 1 OR MORE 256 BYTE BLOCKS TO CASSETTE. 5306 THE OATA IS PADDED TO FILL OUT THE LAST 256 BYTE BLOCK. 5307 530S ; ON ENTRY: 5309 BX POINTS TO MEMORY BUFFER ADDRESS 5310 ex CONTAINS HUMBER OF BYTES TO WRITE 5311 ;:512 ; ott EXIT: 5313 BX POINTS 1 BYTE PAST LAST BYTE WRITT-EN TO CASSETTE 5314 ex IS ZERO 5315 ;------------------------------------------- F9AS 53 5316 PUSH ax F9.9 51 5317 PUSIt cx F9,u, E461 5318 IN AL,PORT_B ;DISABLE SPEAKER f9AC 24FO 53n AND AL,NOT 02H F9AE DeOI 5320 OR AL. 01H ENABLE TInER F980 E661 5321 OUT PORT_B.AL F962 BOB6 5322 MOV AL,OB6H SET UP TIMER .. - MODE 3 SQUARE WAVE F964 E643 $3,3 OUT TIM_CTLtAl F9B6 E8A600 5324 CALL BEGIN.OP ; START MOTOR AND DELAY F9B9 BeA004 5325 NOV AX,llS4 ; SET NORMAL BIT SIZE F98C E88500 5326 CALL "" J SET_TIMER F9BF MOOOS 5327 MOV CX.0800H ;SH CX FOR lEADER BYTE COUNT F9C2 5328 W23: ; WRITE LEADER F9C2 F9 53,9 STC ; WR ITE ONE BITS F9Cl E86800 5330 CALL Wl?ITE_BIT F9C6 EZFA 5331 LOOP "e> ; LOOP • TIL LEADER IS WRITTEN F9C8 F8 5332 CLC ;tRITE SYNC BIT to J F9C9 £86200 5333 CALL WRITE...8IT F9CC S9 5334 pop ex ;RESTORE REGS CX,BX FqCD 58 5335 POP BX F9CE B016 5336 MoV AL. 16M I WRITE SYH CHARACTER F900 E84400 5337 CALL WRITE_BYTE A-72
Page 1:
April 2011 IMPORTANT 1. The motherb
Page 5 and 6:
FEDERAL COMMUNICATIONS COMMISSION R
Page 8 and 9:
CONTENTS SECTION 1. HARDWARE OVERV
Page 10 and 11:
Programming Considerations ........
Page 12 and 13:
INS 8250 Functional Pin Description
Page 14 and 15:
FIGURE LISTING 1. System Block Dia
Page 16 and 17:
SECTION I. HARDWARE OVERVIEW The
Page 18 and 19:
The 16KB Memory Expansion Kits allo
Page 20 and 21:
SECTION 2. HARDWARE ~ Contents: Sys
Page 22 and 23:
SYSTEM BOARD The System Board fits
Page 24 and 25:
The memory is dynamic 16K x 1 chips
Page 26 and 27:
System Board Data Flow Figure 2. S
Page 28 and 29:
1/0 Channel Diagram REAR PANEl SI
Page 30 and 31:
I/O CHRDY I I/O Channel Ready: This
Page 32 and 33:
System Board Component Diagram REA
Page 34 and 35:
Keyboard Interface B lock Diagram
Page 36 and 37:
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Page 38 and 39:
Cassette User Interface The cassett
Page 40 and 41:
Cassette Interface Connector Specif
Page 42 and 43:
I/O Address Map HEX RANGE 9 8 7 6
Page 44 and 45:
System Memory Map X'OOOOO' 16 TO 6
Page 46 and 47:
System Memory Map Cont. START ADDR
Page 48 and 49:
5-1/4" Diskette Drives Switch Setti
Page 50 and 51:
32/64KB Memory Expansion Option Sw
Page 52 and 53:
Power Supply The system DC power su
Page 54 and 55:
N I ~ VI ) § I • \. ~ o el so.
Page 56 and 57:
IBM Monochrome Display and Parallel
Page 58 and 59:
System Channel Interface Lines Used
Page 60 and 61:
Programming Considerations Programm
Page 62 and 63:
• CRT Status Port (I/O Address '3
Page 64 and 65:
Color/Graphics Monitor Adapter The
Page 66 and 67:
CPU .. r-- ) ) ) DISPLAY ADDRESS BU
Page 68 and 69:
Modes of Operation There are two ba
Page 70 and 71:
IBM Monochrome Display Adapter V s.
Page 72 and 73:
Color selection is determined by th
Page 74 and 75:
1"'"""""\ Table 5. I R G B Summary
Page 76 and 77:
Programming the Mode Control and St
Page 78 and 79:
Bit 5 When on, this bit will change
Page 80 and 81:
I/O Address and Bit Map Read/Write
Page 82 and 83:
Color/Graphics Monitor Adapter Auxi
Page 84 and 85:
Parallel Printer Adapter The Printe
Page 86 and 87:
Programming Considerations The Prin
Page 88 and 89:
Parallel Printer Adapter Interface
Page 90 and 91:
Table 7. Printer Specifications (1
Page 92 and 93:
Table 9. Functions and Conditions o
Page 94 and 95:
Table 10. Connector Pin Assignment
Page 96 and 97:
(4) Data transfer sequence Fig. 17
Page 98 and 99:
ASCII Control Codes Control Codes V
Page 100 and 101:
(8) DC 2 (Device Control 2) The DC
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(b) 3) ESC 2 (Escape 2) Receipt of
Page 104 and 105:
ehaves like the LF code. Therefore,
Page 106 and 107:
[DATA] IESCGI ABCDEFGHI [PRINT] ABC
Page 108 and 109:
5 1/4-Inch Diskette Drive Adapter T
Page 110 and 111:
~ Functional Description From a pro
Page 112 and 113:
The FOe is capable of performing 15
Page 114 and 115:
Table 13. Symbol Descriptions (cont
Page 116 and 117:
Command Summary (continued) DATA B
Page 118 and 119:
Command Summary (continued) DATA B
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Table 15. Status Register I BIT NO.
Page 122 and 123:
Table 17. Status Register 3 BIT NO.
Page 124 and 125:
~ ~ +AO-9 +AEN -lOW -lOR -DACK2 +T
Page 126 and 127:
Adapter Inputs -Index -Write Protec
Page 128 and 129:
5-1/4" Diskette Drive Adapter Exter
Page 130 and 131:
(3) The write-protect sensor disabl
Page 132 and 133:
Memory Expansion Options Two Memory
Page 134 and 135:
Switch - Configurable Start Address
Page 136 and 137:
Game Control Adapter The Game Co
Page 138 and 139:
I/O Channel Description A9-AO: D7-D
Page 140 and 141:
) ) ) 15 PIN MALE '0' SHELL c....t
Page 142 and 143:
Asynchronous Communications Adapter
Page 144 and 145:
Modes of Operation The different mo
Page 146 and 147:
I TRANSMIT 'IACUIT I +5V ~ 4S-"l Tx
Page 148 and 149:
INS8250 Functional Pin Description
Page 150 and 151:
Data Set Ready (DSR), Pin 37: When
Page 152 and 153:
Input/Output Signals Data (D7-DO) B
Page 154 and 155:
Bit 3: This bit is the Parity Enabl
Page 156 and 157:
Table 23. BAUD RATE AT 1.843 Mhz De
Page 158 and 159:
Interrupt Identification Register T
Page 160 and 161:
Interrupt Enable Register This 8-bi
Page 162 and 163:
In the diagnostic mode, the receive
Page 164 and 165:
Transmitter Holding Register The T
Page 166 and 167:
Page 168 and 169:
SECTION 3. ROM and SYSTEM r", USAGE
Page 170 and 171:
MOV AH,l ;function is to set time o
Page 172 and 173:
Vectors With Special Meanings Inter
Page 174 and 175:
BIOS Memory Map STARTING ADDRESS H
Page 176 and 177:
The timer is set mode 3 which means
Page 178 and 179:
Keyboard Encoding and Usage Encodin
Page 180 and 181:
Keys 71-83 have meaning only in bas
Page 182 and 183:
ALT - Temporarily shifts keys 2-13,
Page 184 and 185:
Keyboard Usage This section is inte
Page 186 and 187:
Table 28. BASIC Screen Editor Speci
Page 188 and 189:
Low Memory Maps (O-'0600'x) Table 3
Page 190 and 191:
BASIC Workspace Variables If you do
Page 192:
APPENDICES Contents: Appendix A: RO
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lOC OBJ LINE SOURCE STITlE( ROM BIO
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LOC OBJ LINE SOURCE 0068 ?! 155 De
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LOC OBJ LINE SOURCE E09E BBf5 EOAO
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lOC OBJ LINE SOURCE £179 E2FD 462
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LOC OBJ LINE SOURCE E278 7408 612 J
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lOC OBJ LINE SOURCE 755 ; ---------
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LOC OSJ LINE SOU RCE E42B 7440 900
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lOC OBJ LINE SOURCE ESIE 884000 E52
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LaC OBJ LINE SOURCE E613 803E120001
Page 213 and 214: LaC OSJ LINE SOURCE E6EC eSOAOE E6E
Page 215 and 216: LaC OBJ LINE SOURCE E7SF 1505 .402:
Page 217 and 218: LaC OBJ LINE SOURCE 1659 ASSUME CS:
Page 219 and 220: LOC OBJ LINE SOURCE E994 8E08 1798
Page 221 and 222: LOC 08J LINE SOURCE £"91 474849 EA
Page 223 and 224: LaC OBJ LINE SOURCE E890 E99700 E89
Page 225 and 226: LOC 08J LINE SOURCE 2255 ;-- INT 13
Page 227 and 228: LOC OS! LINE SOURCE 2407 ;------ DI
Page 229 and 230: lOC OBJ LINE SOURCE (Eol 7438 fE03
Page 231 and 232: LOC OBJ LINE SOURCE Ef'tD £67200 2
Page 233 and 234: LOC OBJ LINE SOURCE 2870 I ~- -----
Page 235 and 236: LOC (lBJ LINE SOURCE 3007 j --- INT
Page 237 and 238: laC OBJ LINE SOURCE 3157 (AH}=6 SCR
Page 239 and 240: lOC OBJ LINE SOURt.:E FOA43828ZDOAI
Page 241 and 242: lOC OBJ LINE SOURCE FtC7 3458 VIDEO
Page 243 and 244: LOC OBJ LINE SOURCE F260 750E f2:62
Page 245 and 246: LOC OBJ LINE SOURCE F32B 06 3760 PU
Page 247 and 248: LOC OBJ LINE SOURCE F3Cl 3910 NEAR
Page 249 and 250: laC OBJ LINE SOURCE 1'460 80HfE F46
Page 251 and 252: LOC OBJ LINE SOURCE F4FF BSFB 4213
Page 253 and 254: LOC OBJ LINE SOURCE 4359 j------ IM
Page 255 and 256: LOC OBJ LINE SOURCE F689 57 4511 PU
Page 257 and 258: lOC OBJ LINE SOLIRCE 4662 THE 0 COL
Page 259 and 260: LOC OBJ LINE SOURCE F7Cl 8AC4 F7e]
Page 261 and 262: LaC OBJ LINE SOURCE F840 4967 EQUIP
Page 263: LOC OBJ LINE SOURCE F8DA E304 5116
Page 267 and 268: LOC OBJ LINE SOURCE H20 C3 5415 RET
Page 269 and 270: LOC OBJ LINE SOURCE fC46 0030300000
Page 271 and 272: LOC OBJ LINE SOURCE FEBS 833E6E0018
Page 273 and 274: lOC OBJ LINE SOURCE 5866 ;.*.-•
Page 275 and 276: A-82 NOTES
Page 277 and 278: 8088 REGISTER MODEL AX: AH Al ACCUM
Page 279 and 280: MEMORY SEGMENTATION MODEL LOGICAL
Page 281 and 282: XCHG =Exchange RegisterImemory with
Page 283 and 284: SBB = Subtract with borrow Reg./mem
Page 285 and 286: AND = And Reg./memory and register
Page 287 and 288: Indirect within segment 11111111 mo
Page 289 and 290: 8088 CONDITIONAL TRANSFER OPERATION
Page 291 and 292: BOBBINSTRUCTION SET MATRIX LO HI 0
Page 293 and 294: INSTRUCTION SET INDEX Mnemonic Pag
Page 295 and 296: VALUE AS CHARACTERS AS TEXT ATTRIBU
Page 305 and 306: Character Set (OO-7F) Quick Referen
Page 307 and 308: C-14 NOTES
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 and 360:
IBM Monochrome Display Size: Length
Page 361 and 362:
12. Binary: (1) Pertaining to a sel
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:
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
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IBM 5150 PC Technical Reference (6025005, August, 1981) (PDF)

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