User Manuals: Xerox Alto I Computer System

Manuals and User Guides for Xerox Alto I Computer System. We have 1 Xerox Alto I Computer System manual available for free PDF download: Hardware Manual

Xerox Alto I Hardware Manual

Xerox Alto I Hardware Manual (82 pages)

A Personal Computer System Alto series

Brand: Xerox | Category: Desktop | Size: 6 MB

Table of Contents

Table of Contents
2
1 Introduction

3
2 Microprocessor

5
- Arithmetic Section
  5
- Constant Memory
  9
- Main Memory
  9
- Microprocessor Control
  13
3 Emulator

16
- Standard Instruction Set
  16
- Interrupts
  32
- Bootstrapping
  35
- Hardware
  36
4 Display Controller

38
- Programming Characteristics
  38
- Hardware
  38
- Display Controller Microcode
  39
- Cursor
  40
5 Miscellaneous Peripherals

42
- Keyboard
  42
- Mouse
  43
- Keyset
  43
- Parity Error Detection
  46
6 Disk and Controller

50
- Disk Controller Implementation
  54
7 Ethernet

57
- Programming Characteristics
  57
- Ethernet Hardware
  60
- Ethernet Microcode
  60
8 Control RAM, ROM, and S Registers

65
- RAM-Related Tasks
  65
- Processor Bus and ALU Interface
  65
- Microinstruction Bus Interface
  66
- Microinstruction Memory Banks
  66
- Standard Emulator Access
  68
- Interpretation of Emulator Traps
  69
- M and S Registers
  69
- Restrictions and Caveats
  70
9 Nuts and Bolts for the Microcoder

72
100 C Standard Reservedsio (STARTF) Bits

78
- Standard Tasks
  78
- S-Group Instruction Summary
  79

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