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

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APPENDIX A ~ ROM BIOS LISTINGS CONTENTS ITEM Equates and Data Areas Power-on Self-test Boot Strap Loader r""\ I/O Support Asynchronous Communications (RS 232) I/O Keyboard I/O Diskette I/O Printer I/O Display (VIDEO) I/O Cassette I/O System Configuration Analysis Memory-Size- Determination Equipment- Determination (Options) ~ Graphics-Character Generator Time-of-day Print Screen Notes for the BIOS Listing LINE NUMBER 1 198 1355 1410 1640 2255 3007 3119 4977 4903 4933 5503 5642 5817 ADDRESS PAGE A-2 E016 A-4 E6F2 A-20 E729 A-20 E82E A-23 EC59 A-32 EFD2 A-42 F045 A-43 F859 A-68 F841 A-67 F84D A-67 FA6E A-75 FE6E A-77 FF53 A-79 . A-81 A-I
lOC OBJ LINE SOURCE STITlE( ROM BIOS FOR <strong>IBM</strong> PERSONAL COMPUTER) ; ----------------------- ; EQUATES ; ------------------------ 0060 PORT_A EQU 60H i 8255 PORT A ADDR 0061 PORT_B EQU 61H j 8255 PORT B ADDR 0062 PORT.C EQU 62H ;8255 PORT C ADDR 0063 CMO]ORT EQU 63H 0020 9 INTAOO EQU 20H ;8259 PORT 0021 10 INTAOl EQU 21H ;8259 PORT 0020 11 EOI EQU 20H 0040 12 TIMER EQU 'OK 0043 13 TIM.tTl EQU '3H ;8253 TINER CONTROL PORT ADDR 0040 14 TINERO EQU 'OH ;8253 TIMER/CNTER a PORT ADDR 0001 15 THIHT EQU 01 ITIHER a INTR RECVD MASK 0008 16 OMAoa EQU 06 ;oNA STATUS REG PORT ADDR 0000 17 DHA EQU 00 JDMA CHANNEL a ADDRESS REG PORT ADoR 0540 18 MAX.PERIOD EQU 540H 0410 I. MIN.PERIOD EQU 410H 0060 20 KBD.IN EQU 60H IKEYBDARD DATA IN AOOR PORT 0002 21 KBDINT EQU 02 ;KEYBOARD INTR I1A.SK 0060 22 KB.DATA EQU 60H ; KEYBOARD SCAN CODE PORT 0061 23 24 KB.CTL EQU 61H ; CONTROL BITS FOR KEYBOARD SENSE DATA 1------------------------------------------- 25 j 8088 INTERRUPT LOCATIONS 26 ;----------------------------------------- 0000 27 ABSO SEGMENT AT 0 0000 2. LABEL BYTE 0008 2. ORG 2*' 0008 30 LABEL WORD 0014 31 ORG 5*' 0014 LABEL 0020 0020 33 3. O.G .*. LABEL WORD WORD 0020 35 LABEl DWORD 0040 36 O.G 10H*4 0040 37 LABEl WORD 0074 38 ORG IDH*4 0074 39 LABEL DWORD I POINTER TO VIDEO PARHS 0078 .0 ORG 01EH*4 I INTERRUPT IEH 0078 .1 OISK]OINTER LABEl DWORD D07C .2 DRG 01 FH*4 ; LOCATION OF POINTER DO?C 43 EXT_PTR LABEL DWORD I POINTER TO EXTENSION 7COO •• ORG 7COOH 7COO .s BOOT_LOCN LABEl FAR 46 ABSO ENDS 47 48 j-------------------- 49 ; STACK - USED DURING INITIALIZATION ONLY 50 ;--------------------- 51 STACK SEGHEUT AT 30H 0000 (128 ???? I 52 DW 128 DUPf?) 0100 53 TOS LABEl WORD 54 STACK ENOS 55 56 ;------------------------------------------ 57 ; RON BIOS DATA AREAS 58 j --------------------------------------- 0040 59 DATA SEGHENT AT 40H 0000 (4 ????) 60 RS232_BASE OW 4 DUPf?) ; ADDRESSES OF RS232 ADAPTERS 0008 (4 !???) 61 PRWTER_BASE DW 4 DUP(? I ; ADDRESSES OF PRINTERS 0010 ???? 62 EQUIPJLAG DW ; nlSTALLED HARDWARE 0012 ?? 63 MFG_TST DB ; INITIALIZATION FLAG 0013 ???? 64 MEMeRY.SIZE DW ; MEMORY SIZE IN K BYTES 0015 ???? 65 IO.RAM_SIZE DW ; MEMORY IN I/O CHANNEL 0017 ?? 69 KBJLAG DB 66 ; - ---------------------------------------- 67 ; KEYBOARD DATA AREAS 68 ; ---------- - -.---------------------------- 70 71 ;-----. SHIFT flAG EQUATES WITHIN KB_FlAG 72 0080 73 INS_STATE EQU 80K ; INSERT STATE IS ACTIVE 0040 7. CAPS_STATE EQU 40H j CAPS LOCK STATE HAS BEEN TOGGLED 0020 75 HUJ'CSTATE EQU 20K j HUM LOCK STATE HAS BEEN TOGGLED 0010 76 SCROLL_STATE EQU 10H ; SCROll LOCK STATE HAS BEEN TOGGLED 0008 77 All_SHIFT EQU 08H i ALTERNATE SHIfT KEY DEPRESSED A-2
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
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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
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System Board Data Flow Figure 2. S
Page 28 and 29:
1/0 Channel Diagram REAR PANEl SI
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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
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Cassette User Interface The cassett
Page 40 and 41:
Cassette Interface Connector Specif
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I/O Address Map HEX RANGE 9 8 7 6
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System Memory Map X'OOOOO' 16 TO 6
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System Memory Map Cont. START ADDR
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5-1/4" Diskette Drives Switch Setti
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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.
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Color selection is determined by th
Page 74 and 75:
1"'"""""\ Table 5. I R G B Summary
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Programming the Mode Control and St
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Bit 5 When on, this bit will change
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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
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Programming Considerations The Prin
Page 88 and 89:
Parallel Printer Adapter Interface
Page 90 and 91:
Table 7. Printer Specifications (1
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Table 9. Functions and Conditions o
Page 94 and 95:
Table 10. Connector Pin Assignment
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(4) Data transfer sequence Fig. 17
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ASCII Control Codes Control Codes V
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(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,
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[DATA] IESCGI ABCDEFGHI [PRINT] ABC
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5 1/4-Inch Diskette Drive Adapter T
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~ Functional Description From a pro
Page 112 and 113:
The FOe is capable of performing 15
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Table 13. Symbol Descriptions (cont
Page 116 and 117:
Command Summary (continued) DATA B
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Command Summary (continued) DATA B
Page 120 and 121:
Table 15. Status Register I BIT NO.
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Table 17. Status Register 3 BIT NO.
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~ ~ +AO-9 +AEN -lOW -lOR -DACK2 +T
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Adapter Inputs -Index -Write Protec
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5-1/4" Diskette Drive Adapter Exter
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(3) The write-protect sensor disabl
Page 132 and 133:
Memory Expansion Options Two Memory
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Switch - Configurable Start Address
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Game Control Adapter The Game Co
Page 138 and 139:
I/O Channel Description A9-AO: D7-D
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) ) ) 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: Asynchronous Communications Adapter
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
Page 197 and 198: LOC OBJ LINE SOURCE 0068 ?! 155 De
Page 199 and 200: LOC OBJ LINE SOURCE E09E BBf5 EOAO
Page 201 and 202: lOC OBJ LINE SOURCE £179 E2FD 462
Page 203 and 204: LOC OBJ LINE SOURCE E278 7408 612 J
Page 205 and 206: lOC OBJ LINE SOURCE 755 ; ---------
Page 207 and 208: LOC OSJ LINE SOU RCE E42B 7440 900
Page 209 and 210: lOC OBJ LINE SOURCE ESIE 884000 E52
Page 211 and 212: 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
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LOC OBJ LINE SOURCE F3Cl 3910 NEAR
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laC OBJ LINE SOURCE 1'460 80HfE F46
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LOC OBJ LINE SOURCE F4FF BSFB 4213
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LOC OBJ LINE SOURCE 4359 j------ IM
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LOC OBJ LINE SOURCE F689 57 4511 PU
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lOC OBJ LINE SOLIRCE 4662 THE 0 COL
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LOC OBJ LINE SOURCE F7Cl 8AC4 F7e]
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LaC OBJ LINE SOURCE F840 4967 EQUIP
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LOC OBJ LINE SOURCE F8DA E304 5116
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LOC OBJ LINE SOURCE F97E EBF9 5268
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LOC OBJ LINE SOURCE H20 C3 5415 RET
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LOC OBJ LINE SOURCE fC46 0030300000
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LOC OBJ LINE SOURCE FEBS 833E6E0018
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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 297 and 298:
Page 299 and 300:
Page 301 and 302:
Page 303 and 304:
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 ~
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1'. -- COLOR/GRAPHICS MONITOR ADAPT
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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:
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
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