SPACE FEVER ----------- P1-CPU BD P1-I/O BD 6 PIN-SOUND BD 4 PIN SOUND --------- --------- -------------- ----------- 1 GND 1 GND 1 GND | --- 1 AUDIO 2 GND 2 GND 2 | FROM 2 GND 3 GND 3 GND 3 | I/O 3 4 +12V 4 +12V 4 +12V | BOARD 4 5 +12V 5 +12V 5 +5V | P2 6 +12V 6 +5V 6 -5V | --- 7 +12V 7 +5V 8 +5V 8 -5V 9 +5V 9 +24V 10 -5V P4-I/O BD P5-I/O BD P6-I/O BD P7 P8 -- -- -- -- -- 1 VID GN 1 PL2 FIRE 1 GND 1 CTR + 1 GND 2 VID RED 2 PL2 LEFT 2 GAME-C 2 CTR - 2 3 VID BL 3 PL2 RIGHT 3 -B 3 COIN 4 GND 4 4 -A 5 GND 5 GND 5 PL1 LEFT 6 SYNC 6 GND 6 PL1 RIGHT 7 GND 7 2 START 8 1 START 9 PL1 FIRE 10 GND 11 GND 12 GND