Atari 800 Field Service Manual

TABLE
OF
CONTENTS
Section
Title
Page
INTRODUCTION
ix
1
THEORY
OF OPERATION
l-I
Overview
l-l
User Interface
1-2
*00/S00 Mechanical
Description
1-3
Motherboard 1-4
Central Processing
Unit
1-5
ROM Personality PCB 1-5
RAM PCB
1-5
Keyboard 1-6
Power
Supply 1-6
Program
Cartridge 1-6
*00/800 Electronic
Discussion 1-7
Central Processing
Unit
1-7
CPU 6502 Integrated
Circuit
1-7
Alphanumerical Television
1-S
Interface
Controller
Color Television
Interface 1-10
Adaptor
Grcphic Television
Interface
1-10
Adaptor
I/O
Decoder 1-10
Composite Video 1-10
Motherboard
Console
-
*00
l-l 1
Pot
Keyboard Integrated 1-11
Peripheral Interface
Adaptor
I
-1
1
Key-In Key-Out
Integrated 1-12
Circuit
Memory Map Decoder
1-12
I/O
Decoder
1-13
Motherboard Console
-
800
1-U
Bi-directional
Data Buffer
l-U
ROM
Personality Board
1-15
Power
Supply
1-16
ROM
Cartridge
1-17
Accessories
1-17
AC
Power Adaptor
1-17
TV
Switch Box
1-17
'BASIC
Program
Cartridge 1-17
2 SILKSCREEN
AND SCHEMATICS 2-1
3 TROUBLESHOOTING
AND TESTING 3-1
Overview
3-1
Tests
^
3-1
Equipment
Needed
3-1
Testing With
and
Without
3-2
the SALT II
Cartridge
ATARI
Home
Computer
iii

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS