"Quantum" (Atari, 1983) ----------------------- P20: 44-pin edge connector component side solder side -------------- ----------- 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) --------------------------------------------------------------------------- Quantum DIP Swith (4C/D) settings: 8 7 6 5 4 3 2 1 --- --- --- --- --- --- --- --- Off On Free Play On On 1 coin for 2 credits Off Off 1 coin for 1 credit (default) On Off 2 coins for 1 credit Off Off Right coin mech x1 (default) On Off Right coin mech x4 Off On Right coin mech x5 On On Right coin mech x6 Off Left coin mech x1 (default) On Left coin mech x2 Off Off Off No bonus coins (default) On Off Off ??? Off On Off 1 bonus coin for every 4 coins inserted On On Off 2 bonus coin for every 4 coins inserted Off Off On 1 bonus coin for every 5 coins inserted On Off On 1 bonus coin for every 3 coins inserted Off On On No bonus coins On On On No bonus coins