Atari 800 Field Service Manual

400 COLOR
BAR
TROUBLESHOOTING
STAR
Swap-out
A301
and
A302.
on CPU
Board
Oo«9
screen look
like Figure 3-4
NO
Swap
CPU
Board
Does
screen look
Uke Figure
3-1
NO
Swap-out
Alll,
Q107
on
Motherboard
Does
screen
look
like
Figure 3-4
YES
Go to
TIA, Page
5-13
YES
Trace
color
circuitry
on CPU
Board.
Make
cetain
to
check
color
delay
circuit
and
R3Q9
YES
Go
to
TIA.
Page 5-13
NO
Go
Co next
page
ATARI
Home
Computer
5-10

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