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Atari 400 Field Service Manual

Atari 400
207 pages
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400 VERIFY
ROM
(cont)
PASS
YES
Go to
RAM
Test,
Page
5-31
YES
NO
l9 02 clock
prttsent
at
Pin 10
of Z403
NO
Trace
02
(Refer
CPU
Board
on Page 5-10
)
,
and retest
PASS
WO
YES
Go to
RAM
Test,
Page
5-31
Call
ATARI
Tech
Une
Specialist
Inside
California
C800)
672-1466
Outside
California
(800)
538-1535
(800) 538-1536
ATARI
Home
Computer
5-30

Table of Contents

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Atari 400 Specifications

General IconGeneral
ManufacturerAtari
Model400
TypeHome Computer
Release Year1979
CPUMOS Technology 6502
CPU Speed1.79 MHz
ROM10 KB
Operating SystemAtari OS
KeyboardMembrane keyboard
RAM8 KB (expandable to 48 KB)
GraphicsANTIC and GTIA chips
Sound4 channels
DisplayRF output for connection to TV
StorageOptional cassette tape drive or floppy disk drive
PortsCartridge
Display Resolution320x192 (16 colors)

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