~-
.~
.
This test checks Read-
Only Memory (ROM) and
Random-Access Memory
(RAM). ROM is nonerase-
able memory containing
the computer's operating
system. RAM is for the
programs you use or
write yourself.
The memory test works
a little like a stoplight.
Two bars appear on the
screen when the ROM is
tested. If the bars turn
green, the ROM is okay
and you may proceed.
Red means STOP: The
ROM is out of order, and
you must contact your
ATARI retailer or Factory
Authorized Service Center.
-t
During the RAM test,
48 squares-each repre-
senting a RAM section-
are tested. The remain-
ing 16KRAM is available
only with certain software
programs. If a square
turns white, then green,
the corresponding sec-
tion is good. If no square
turns red, the RAM is
okay.
The audio-visual test
checks the four program-
mable sound voices and
color and graphics capa-
bility. A musical staff and
treble clef appear on the
screen above the number
of the voice tested. Six
notes are played and dis-
played on your TV screen.
The six notes repeat once
for each of the four voices.
If a voice number ap-
pears but you don't hear
music, that voice is not
working properly. Make
sure the TV's sound is
turned up.
The colors displayed
should be consistent dur-
ing each test.
You work with two
keyboards when you
select this test, the one
under your fingertips and
a facsimile on the screen.
When you press a key,
a corresponding key on
the TV screen flashes in
reverse video (a blue
character on a white
background) and a note
sounds. The space bar
and special-function keys
are already in reverse
video, so pressing one of
them changes the match-
ing key on the screen to
normal video. If nothing
happens on the screen
when you press a key,
that key is not working.
The keys in the top row
of the screen keyboard
are located on the far
right side of your com-
puter keyboard. Disre-
gard keys numbered 1-4.
Reading from left to right,
the keys in the screen's
top row include:
RESET,
START, SELECT, OPTION,
four numbered keys,
HELP, REVERSE VIDEO
( ~ ), and BREAK. Other-
wise, the two keyboards
have the same arrange-
ment of keys.
SHIFT
and
CONTROL
flash only when pressed
simultaneously with
another key.
There are three keys
that do not flash or sound
and that terminate the
test when pressed.
HELP
returns you to the SELF-
TEST menu.
RESET
returns you to BASIC,'
and
BREAK
evokes no
response.
8
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