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IBM 5150 - Table of Contents

IBM 5150
309 pages
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Contents
SECTION 1. SYSTEM BOARD
..•.••••...........••
1-1
Description
..................................
1-3
Microprocessor
...............................
1-3
Data
Flow Diagrams
...........................
1-5
System Memory Map
..........................
1-8
System Timers
..............................
1-11
System Interrupts
............................
1-11
ROM
......................................
1-13
RAM
......................................
1-13
DMA
.....................................
1-13
I/O
Channel
................................
1-14
System Board Diagram
........................
1-16
I/O
Channel Diagram
.........................
1-18
I/O
Channel Description
......................
1-20
I/O
Address Map
............................
1-24
Other Circuits
...............................
1-25
Speaker Circuit
..........................
1-25
Cassette Interface
........................
1-27
Cassette Circuit Block Diagrams
............
1-28
8255A
I/O
Bit Map
......................
1-31
System-Board Switch Settings
..............
1-33
Specifications
...............................
1-34
Card Specifications
.......................
1-34
Logic Diagrams
..............................
1-36
SECTION 2.
COPROCESSOR
.....................
2-1
Description
..................................
2-3
Programming Interface
.........................
2-3
Hardware Interface
............................
2-4
SECTION 3.
POWER
SUPPLY
.....................
3-1
Description
..................................
3-3
~
Input Requirements
...........................
3-4
Outputs
.....................................
3-4
Vdc Output
..............................
3-4
Vac Output
..............................
3-5
Overvoltage/Overcurrent Protection
..............
3-5
ix

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