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Pinouts for "Gravitar" (Atari, 1982)
P20: 44-pin edge connector
component side solder side
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GND A 1 GND
+5V B 2 +5V
C 3 +22 VDC
D 4 -22 VDC
10.3 VDC E 5
COIN LOCKOUT F 6 COIN CTR R
COIN CTR L H 7 P1 LED
P2 LED J 8
K 9
L 10
P1 START M 11 P2 START
SW GND N 12 SW GND
P 13
CABINET R 14 SLAM
AUX COIN S 15
SELF TEST T 16 COIN L
COIN R U 17
V 18
W 19
X 20
+5V Y 21 +SENSE (+5V)
GND Z 22 -SENSE (-5V)
P19: 24-pin edge connector
component side solder side
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X OUT A 1 X GND
Y OUT B 2 Y GND
C 3 SHIELD
D 4 FIRE
ROT LEFT E 5 ROT RIGHT
F 6 THRUST
RED GND H 7 RED
GREEN GND J 8 GREEN
BLUE GND K 9 BLUE
L 10
AUDIO GND M 11 AUDIO 2
N 12 AUDIO 1
Notes:
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- For testing purposes, Black Widow boards can be plugged directly into a
Gravitar harness. If you want to actually play the game, you'll have to
add 4 extra wires at P20:[8/9/K/L] for the extra control panel inputs.
- The "CABINET" pin (P20:R) is potentially interesting. I haven't played
with it, but suspect that if you tied it to GND (or left it open), you
could play the game on a cocktail cabinet.
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