Atari XE - Memory Test Procedures

4. Press [Select] to select a test (that test will blink), then
press
[Start] to begin. The test will begin and continue
runn i
ng until you press [Reset] .
Note: If you have a keyboard connected to your system ,
pressing
[Help] while a test is running will redisplay the Self
Test menu.
As
long as you experience trouble-free operation with your
XE , conducti ng the system diagnostics every few months
should
be a sufficient checkup for your system.
Memory Test
The memory test checks ROM (Read Only Memory) and RAM
(Random Access Memory). ROM is nonerasable memory
containing the computer's operating system , ATARI BASIC ,
and Missile Command. RAM is temporary memory holding
the programs you write with
ATARI BASIC or load from disk
or cassette.
The memory test works something
like a stoplight. When
ROM is tested, two bars appear on screen. If the bars turn
green,
ROM is working correctly. If the bars turn red , ROM
needs servicing.
HEHORV TEST
RAH
1111111111111111
1111111111111111
1111111111111111
When RAM is tested , 48 small squares appear, each represent-
i
ng 1 kilobyte of RAM . If a square turns green , that kilobyte is
good . If a square turns red , RAM needs servicing .
Note : If you entered the Self Test program from ATARI BASIC ,
you will see 40 squares instead of 48 during the memory test.
ATARI BASIC is using the other eight kilobytes of RAM .
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