Atari 800XL Service Manual

MONITOR OUTPUT
The
5
pin
DIN
monitor
output
jack
(J2)
accepts
the
composite
video
and
the
composite
luminance
signals
from
the OTIA
video
summation
circuitry
and
the
amplified
mono-aural
audio
signals
from
POKEY.
J2
then
transfers
these
signals
directly
to the
input
of
the
video
monitor
via
a
5
pin
DIN
monitor
cable.
The
output
signals
have
the
following
characteristics:
Min. Voltage
Composite
Yideo
750
mV
P-P
Composite
Luminance
I.2Y
P-P
Audio
600 mV
P-P
Max. Voltage
1 VP-P
1.5V P-P
750
mY
P-P
POWER SUPPI Y
The
power
supply
connector
is
a
7-pin
DIN
connector.
The
Atari
800XL
has
an
external
power
supply
that
accepts
1
1 0 VAC
(
nominal
)
from
the
power
lines
and
provides +5
YDC
output
(
+/-
2
%). The
maximum
rating
for
the
supply
is
+5
volts
and
1
.2
amps.
Power
Supply
Connector
Pin
Assignments
(Looking
Toward
Computer)
17

Atari 800XL Specifications

General

Manufacturer	Atari
Type	Home computer
Release year	1983
CPU	MOS Technology 6502C
RAM	64 KB
ROM	24 KB
Operating System	Atari OS
CPU Speed	1.79 MHz (NTSC) / 1.77 MHz (PAL)
Graphics	ANTIC and GTIA chips
Display resolution	160×192 to 320×192 pixels
Sound	POKEY chip
Storage	Cassette tape, floppy disk
Ports	Serial, parallel, monitor, joystick ports