Memory Test - Atari 1200 XL Owner's Manual

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Whenever
you
turn
your
new
ATARI
1200XL
Computer
on,
it
automatically
tests
itself—
then
lets
you
dou-
ble
check
it
with a series
of
built-in self-tests that
help ensure proper
operation.
These
tests
check
to
see
if
the
computer's
memory,
sound and
col-
ors,
and keyboard
are
working
properly.
Before
you
run
any
software
you
purchased
for
your
ATARI
1200XL Computer,
you should
remove
any
cartridge,
and
put the
computer
through
the en-
tire self-test routine.
Thereafter,
you'll
need
to
run
the
self-tests
only
periodically,
because
each
time
your computer
is
"powered
up," the
computer
runs a
quick
self-test
on
its
memory
circuits.
This
test
ac-
counts
for
the
slight
delay
that
occurs
be-
tween
the
moment
you
turn the
computer
on
and
when
the
word ATARI
appears on
the
TV
screen.
If
the
memory
circuits
ever
fail
the
test,
the
first
thing
you'll
see on your
TV
screen are the
words
MEMORY
TEST
and
sev-
eral
red
and green
squares
and
rectangles.
(Any
external
software-
cartridge, diskette or
cassette—
that
you
try
to
plug
or load
into
the
computer
will
be
ignored.)
This
means
the
com-
puter
needs
service,
and
you should
contact
your
ATARI
Home
Computer
retailer
or
Factory
Authorized Service
Center.
The
HELP
key
lets
you
initiate
your computer's
self-tests.
Pressing
HELP
once
while
the
word
ATARI
is
on your
TV
screen
displays the
self-
test
options-
ALL
TESTS,
MEMORY,
AUDIO-
VISUAL,
or
KEYBOARD
—on
your screen.