5
Contents
CHAPTER 1 : INTRODUCTION.
CHAPTER 2 : ATTITUDES TO WORK AND DISCIPLINES REQUIRED.
2.1
Attitudes to Work and Working Environment.
2.2
Anti-Static Precautions.
2.3
Tools and equipment Required.
2.4
Soldering.
2.5
Desoldering.
2.6
Defluxing.
CHAPTER 3 : COMPLETE CIRCUIT DESCRIPTION
3.1
The Power Supply Unit.
3.2
The Microprocessor (MPU)
3.3
The Clock Circuitry.
3.4
Memory Devices.
3.5
Random Access Memory.
3.6
The Video Generating Circuitry.
3.7
The Video Driving Circuitry.
3.8
Cycle Stretching.
3.9
The "Econet" Circuitry.
3.l0
The Keyboard Circuitry.
3.11
The Cassette and R5423 Serial Interfaces.
3.12
The Floppy Disc Interface.
3.13
The User and Printer Ports.
3.14
The Reset Circuitry.
3.15
The Analogue Port.
3.16
The Voice Synthesiser.
3.17
The Sound Generator and Audio Amplifier.
3.18
The 1MHz Bus Interface.
3.19
FRED.
3.20
Glitches.
3.21
Double Accessing.
3.22
NPGFD (JIM)
3.23
General Guidelines For Use of the 1MHz Bus.
CHAPTER 4 : LINK SETTINGS AND FUNCTIONS.
4.1
Keyboard PCB Removal.
4.2
Removing the Main PCB.
4.3
Re-Assembling the Machine.
4.4
Link Functions.
Summary of Contents for BBC A
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