C
6MTROILER
JACK
FNTERFACES
The JOOXL provides two
con&oJIcr jacV
inTerf^c^s* Both
are functior.ally and
electrically
idcnticaL The
controlW
jacks
aic 9-pjn D-type male connectors-
Figure
I
'to s^iows Uic
pin a^^ignrfkenis
for
the
?-pjn conrtectors-
1,
Ooystick
Forward
Input 6. Trigger
Input
2,
(Joystick) BacJf Input 7. +5 volts
3,
(Joystick) Leit Input S. Ground
^- (3oysTic30 Right
Input
9-
A
Potentiometer
Input
3-
B
Potentiometer,
Input
Figire I-IO-
Controller lack Pin
Assignments
CARTRIDGE
INTERFACE
The cartridge inlerface
connects cartridges to the
computer
with
a
30-pin.
connector.
The
Atari 800XL has Revision B
of Atari
BASIC built-in.
This is
equivalent
to
having
a
BASIC cartridge
"permanently" plugged
into the
coasole-
When
any
cartridge
is
plugged into
the computer, it takes
precedence
over the
built-in
BASIC This
is a fiffictjon of hardware. When no cartridge
is
plugged
in, the
hardware enables
the
built-in
BASIC
Figure
l-ll
Illustrates the pin
assignments oi the
cartridge
connector.
SOOXL Computer
1-13
Field Service Manual
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