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Pinouts for "Quantum" (Atari, 1983)
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 V DIR 1
V CLOCK 1 F 6 H CLOCK 1
H DIR 1 H 7
COIN LEFT J 8
RED GND K 9 COIN RIGHT
COIN AUX L 10 SELF TEST
START 2 M 11 START 1
P1 LED N 12 AUDIO 2
GREEN GND P 13 AUDIO 1
BLUE GND R 14 P2 LED
COUNTER R S 15 COUNTER L
RED OUT T 16 X GND
Y GND U 17 BLUE OUT
GREEN OUT V 18
W 19 X OUT
X 20 Y OUT
+5V Y 21 +SENSE (+5V)
GND Z 22 -SENSE (GND)
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