Atari 800XL

AUDIO VISUAL TEST
Purpose:
To
test the
ANTIC
and
POKEY
chips.
Format
The
screen
displays
a music
staff
and
treble
clef.
A
sequence
of six
tones
sound and
the
corresponding
note
shows
on
the
staff.
The tune
plays
sequentially
from
channel
one
through
channel
four.
The
channel
number
changes
for
each
according
to the
sound
channel
in
use.
Voice
numbers
1
-4
under
the
staff
and
treble
clef
indicate
the
channel
in
use.
There
is
a
slight
pause
between
each
voice.
A
fault
is
indicated
by a
note
appearing
on the
screen
without
any
sound
and vice
versa.
The
AUDIO
VISUAL
TEST
continues
testing
until
either
the
HELP
or
RESET
key
is
pressed.
KEYBOARD TEST
Purpose:
To
test
the
POKEY,
ANTIC
and
ROM
chips.
Format:
A
full
keyboard
is
displayed
on the
screen.
Press
each
keyboard
key
and
the
corresponding
key
on the
screen
changes
to
inverse
video
and a
tone
sounds.
It
should
change
back to
the
original
color
when
the
key
is
released.
NOTE:
The
control
and
shift
keys
change
only
when
pressed
at the
same
time
as
another
key.
The
display
for
both
keys
will
change
to
inverse
video
and
then
back.
As
each
key
(except
RESET,
HELP
and
BREAK)
is
pressed,
a
tone
is
generated.
ALL TESTS
All
of the
Self
Tests
are
executed
one
after
another
until
either
the
HELP
or
RESET
key
is
pressed.
NOTE:
When
ALL TESTS
is
executing,
the
MEMORY
TEST
and
the
AUDIO
YISUAL
TEST
exit
after
one
complete
test
cycle.
KEYBOARD
TEST
(hiring
ALL
TESTS
is
software
controlled.
No
operator
Input
Is
required.
25