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Atari 800 Service Manual

Atari 800
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5.3.5 Stand Alone Test (Diagnostic)
The Stand Alone Test uses ATARI supplied diagnostic software (Program
Cartridge) to check system operation and integrity. Complete all of
the previous individual System Check-Out tests before preceeding with
the Stand Alone Test. Complete the entire Stand Alone Test, logging
all failure conditionst before attempting to repair any failure.
Refer to paragraph 5.4, Troubleshooting, for the correct procedure to
repair any detected failure.
Special Tools Reguired (Refer to Fiqure 5-2)
Stand Alone Test Program Cartridge
Controller Port Jumper Assembly
Peripheral Port Jumper Assembly
Screwdriver flat-blade no. 1
Test Procedures:
1. Set System Power ON/OFF switch to OFF.
2. Open Program Cartridge door and insert Stand Alone Test Program
Cartridge in left cartridge slot (800 Console only, 400 Console
only has one cartridge slot). Close Program Cartridge door.
3. Plug the Peripheral Port Jumper Assembly into the side peripheral
port.
4. Plug the Controller Port Jumper Assembly into the front controller
ports.
5. Set the System Power switch to ON. The diagnostic program Con-
tained in the Program Cartridge will be executed and the diagnos-
tic screen display will appear. If the Console fails to execute
the diagnostic program and displays a System Error and a buzzer
sounds, turn the System Power switch to OFF and reinsert the Pro-
gram Cartridge. Repeat System Power-Up, if the Console fails to
execute the diagnostic program after three attempts refer to para-
graph 5.4, Troubleshooting, for further instructions.
6. Each diagnostic test contained on the Program Cartridge is
selected by a 'command letter'. The following is a list of the
'command letters'.
ATARI Personal Computers 5-7

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Atari 800 Specifications

General IconGeneral
ProcessorMOS Technology 6502
Processor Speed1.79 MHz
ROM10 KB
GraphicsANTIC and GTIA chips
Release Year1979
Display Resolutionup to 320 x 192
Colors128 colors
Sound4 channels
StorageCartridge, cassette, floppy disk
PortsCartridge, serial, monitor
Operating SystemAtari OS

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