Acorn Computers Limited BBC A Manuals

Manuals and User Guides for Acorn Computers Limited BBC A. We have 1 Acorn Computers Limited BBC A manual available for free PDF download: Hardware Manual

Acorn Computers Limited BBC A Hardware Manual

Acorn Computers Limited BBC A Hardware Manual (47 pages)

Brand: Acorn Computers Limited | Category: Computer Hardware | Size: 0 MB

Table of Contents

Hardware Guide
1
Table of Contents
5
Chapter 1 : Introduction

7
Chapter 2 : Attitudes to Work and Disciplines Required

13
- Attitudes to Work and Working Environment
  13
- Anti-Static Precautions
  14
- Tools and Equipment Required
  16
- Soldering
  16
- Desoldering
  17
- Defluxing
  18
Chapter 3 : Complete Circuit Description

19
- The Power Supply Unit
  19
- The Microprocessor (MPU)
  19
- The Clock Circuitry
  19
- Memory Devices
  22
- Random Access Memory
  23
- The Video Generating Circuitry
  23
- The Video Driving Circuitry
  26
- Cycle Stretching
  27
- The "Econet" Circuitry
  28
- The Keyboard Circuitry
  30
- The Cassette and R5423 Serial Interfaces
  30
- The Floppy Disc Interface
  32
- The User and Printer Ports
  33
- The Reset Circuitry
  33
- The Analogue Port
  33
- The Voice Synthesiser
  34
- The Sound Generator and Audio Amplifier
  34
- The 1Mhz Bus Interface
  37
- Fred
  37
- Glitches
  38
- Double Accessing
  40
- Npgfd (Jim)
  40
- General Guidelines for Use of the 1Mhz Bus
  43
Chapter 4 : Link Settings and Functions

43
- Keyboard PCB Removal
  44
- Removing the Main PCB
  44
- Re-Assembling the Machine
  45
- Link Functions
  46

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