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April 2011 IMPORTANT 1. The motherb
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FEDERAL COMMUNICATIONS COMMISSION R
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CONTENTS SECTION 1. HARDWARE OVERV
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Programming Considerations ........
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INS 8250 Functional Pin Description
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FIGURE LISTING 1. System Block Dia
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SECTION I. HARDWARE OVERVIEW The
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The 16KB Memory Expansion Kits allo
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SECTION 2. HARDWARE ~ Contents: Sys
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SYSTEM BOARD The System Board fits
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The memory is dynamic 16K x 1 chips
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System Board Data Flow Figure 2. S
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1/0 Channel Diagram REAR PANEl SI
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I/O CHRDY I I/O Channel Ready: This
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System Board Component Diagram REA
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Keyboard Interface B lock Diagram
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
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Cassette User Interface The cassett
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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
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Power Supply The system DC power su
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N I ~ VI ) § I • \. ~ o el so.
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IBM Monochrome Display and Parallel
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System Channel Interface Lines Used
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Programming Considerations Programm
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• CRT Status Port (I/O Address '3
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Color/Graphics Monitor Adapter The
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CPU .. r-- ) ) ) DISPLAY ADDRESS BU
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Modes of Operation There are two ba
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IBM Monochrome Display Adapter V s.
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Color selection is determined by th
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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
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Color/Graphics Monitor Adapter Auxi
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Parallel Printer Adapter The Printe
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Programming Considerations The Prin
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Parallel Printer Adapter Interface
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Table 7. Printer Specifications (1
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Table 9. Functions and Conditions o
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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
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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
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The FOe is capable of performing 15
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Table 13. Symbol Descriptions (cont
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Command Summary (continued) DATA B
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Command Summary (continued) DATA B
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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
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Memory Expansion Options Two Memory
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Switch - Configurable Start Address
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Game Control Adapter The Game Co
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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 194 and 195: APPENDIX A ~ ROM BIOS LISTINGS CONT
- Page 196 and 197: LaC OBJ LINE SOURCE 0004 0002: 0001
- Page 198 and 199: LOC OBJ LINE SOURCE E02.4. "9 C3: i
- Page 200 and 201: LaC OBJ LINE SOURCE E100 EBAO 38. J
- Page 202 and 203: LOC OBJ LINE SOURCE ~ EIFA 26C70608
- Page 204 and 205: LOC OBJ LINE SOURCE 685 ; -------
- Page 206 and 207: LOC OBJ LINE SOURCE ~:~~:: 82.4 ; -
- Page 208 and 209: LOC OBJ LINE SOURCE 97. ;----------
- Page 210 and 211: lOC OBJ lJNE SOURCE E585 6501 ES87
- Page 212 and 213: LOC OBJ LINE SOURCE E6BS E661 1275
- Page 214 and 215: lOC OBJ LINE SOURCE ~ E729 E72' 170
- Page 216 and 217: LOC OBJ LINE SOURCE ,,-..., ,,-...
- Page 218 and 219: LOC OBJ I.INf SOURCE ,..-..." ~ Eas
- Page 220 and 221: LOC OBJ LINE SOURCE EAID 680052 EA2
- Page 222 and 223: LOC OBJ LINE SOURCE ~EB.a £BI0 881
- Page 224 and 225: LOC OBJ LINE sou RCE ESFI 740F 2180
- Page 226 and 227: LOC OBJ LINE SOURCE EC87 BA.fO EC89
- Page 228 and 229: LOC OBJ LINE SOU-RCE ~ f082: 5A 246
- Page 230 and 231: LOC OBJ LINE SOURCE r""\ EE52: 800
- Page 232 and 233: LOt OBJ LINE SOURCE fFOZ E605 fF04
- Page 234 and 235: lDC OBJ LINE SOURCE EF9E E2FE 2946
- Page 236 and 237: LOC OBJ LINE SOURCE ~ ~ FOIA EE FOI
- Page 238 and 239: LOC OBJ LINE SOURCE F04S F045 FeFO
- Page 240 and 241: LOC OBJ LINE SOURCE F146 EE F147 42
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LaC OBJ LINE SOURCE FZ16 E8CIFF 353
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LOC OBJ LINE SOURCE F2Al n08 F2A3 8
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lOC 08J LINE SOURCE F376 fBED 3834
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LaC OBJ LINE SOURCE f41C 74F8 3986
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loe OBJ LINE SOURCE F4A7 2BOl F4A9
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lOC OBJ LINE SOURCE FS6B F3 4287 RE
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LOC OBJ LINE SOURCE F607 23C3 4435
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LOC OBJ LINE SOURCE F6E5 DIE 1 4586
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LOC OBJ LINE SOURCE F77D E947FA 473
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LaC OBJ LINE SOURCE F636 5.60 4891
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lOC OBJ LINE SOURCE ~ F8es 5043 tID
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LOC OBJ LINE SOURCE ~ F936 7403 519
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LOC OBJ LINE SOURCE ~ 5338 ;-------
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LOC OBJ LINE SOURCE FASF EeZ3FE 549
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lOC OBJ LINE SOURCE 5641 ;--- INT l
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LOC OBJ LINE SOURCE r"\ ,,-...., 58
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Notes For The BIOS Listing 1. The
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Appendix B. Assembly Instruction Se
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OPERAND SUMMARY "reg" field Bit Ass
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MOV = Move Register/memory to/ from
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ARITHMETIC ADD =Add Reg./memory wi
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AAM =ASC II adjust for mUltiply \1
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STRING MANIPULATION REP = Repeat 1
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JS =Jump on sign 10 1 1 1 1 0 0 0
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CLD = Clear direction S1D = Set dir
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HI LO 8088 INSTRUCTION SET MATRIX
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Appendix C. Of Characters Keystroke
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AS TEXT ATTRIBUTES VALUE AS CHARACT
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VALUE AS CHARACTERS AS TEXT ATTRIBU
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AS TEXT ATTRIBUTES VALUE AS CHARACT
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06 214 ALT 214 NOTE 6 MAGENTA BROWN
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NOTE 1 Asterisk (*) can easily be k
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Character Set (80-FF) Quick Referen
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APPENDIX D LOGIC DIAGRAMS ~ Conten
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~ SYSTEM BOARD (WAIT STATE GENERATO
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SYSTEM BOARD (DMA) ii ~~;;:;;; ~ :!
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SYSTEM BOARD (DYNAMIC MEMORY) Ṇ..
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SYSTEM BOARD (SPEAKER/CASSETTE/TIME
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SYSTEM BOARD (I/O CHANNEL) - Ṉ o
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KEYBOARD ~~"(c---i." ~ ::g .. ~ (_.
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) ) ) CII:I 74LSIS7 3: 2~ _ (SHT1)
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,- IBM t' -...l ) ) ) Q n --- 684o
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IBM MONOCHROME DISPLAY AND PARALLEL
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) ) ) '"" '''''" ~ "'lllp'lf ... ~
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IBM MONOCHROME DISPLAY AND PARALLEL
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COLOR/GRAPHICS MONITOR ADAPTER I ,
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COLOR/GRAPHICS MONITOR AOAPTER ~ i
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COLOR/GRAPHICS MONITOR ADAPTER I'~
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IBM 80 CPS DIAGRAM OF DRIVER CIRCUI
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~ 5%" DISKETTE DRIVE ADAPTER ~o~ ~~
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5%" DISKETTE DRIVE ADAPTER a i . ~~
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5%" DISKETTE DRIVE Ii, -M 0 .. 'a.
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) ) ) PART OF P21 U'I ~ ~ t::l -I
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32 KB MEMORY EXPANSION ~!~ I~ 1~lo
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64 KB MEMORY EXPANSION ~-.---------
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64 KB MEMORY EXPANSION ,,!-H ~ m
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GAME CONTROL ADAPTER I~," u" ~~LJ-j
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Appendix E Unit Specifications Sy
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GLOSSARY 1. Address Buss: A set of
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26. Data: (1) A representation offa
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--..., 56. Low order position: The
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85. Scan Line: The use of a cathode
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BIBLIOGRAPHY IBM Publications 1. IB
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INDEX A AO-AI9 (Address Bits 0-19)
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BIOS (continued) Programming Tip 3-
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Command Status Registers Register
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ESC C (Escape C) 2-85 ESC D (Escape
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IBM Monochrome Display and Parallel
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L LF (Line Feed) 2-79 Light Pen Int
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Options (continued) Parallel Print
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Programming Considerations Asynchro
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Response Requirements, Interrupt an
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System Board Cassette Interface Co
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w Workspace (BASIC Variables) 3-23
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The Personal Computer Hardware Libr