SPACE FIREBIRD VIDEO BD CPU BD MAIN (PL1) SUB (PL2) COIN CTR -------- ------ ---- --- ---- --- 1 GND 1 SVC 1 RIGHT 1 RIGHT 1 COIN 1 CTR 2 GND 2 SVC 2 LEFT 2 LEFT 2 2 CTR 3 GND 3 3 3 3 COIN 4 +12V 4 4 4 5 +12V 5 5 GND 5 GND 6 +12V 6 WARP 6 WARP 7 +12v 7 7 8 +5v 8 8 9 +5v 9 FIRE 9 FIRE 10 -5v 10 10 11 11 12 12 1 VID GN 13 1 START 2 VID RED 14 2 START 3 VID BL 15 GND 4 GND 16 5 GND 17 6 SYNC