Tank Cocktail Atari (1974) -------------------------- Tank! Cocktail consists of 2 boards, each with their own edge connectors. These appear to be single-sided edge connectors for AMP connectors (a la Midway Space Invaders UR). BOARD 1 [J-3]: ^^^^^^^^^^^^^^ 1 - GND 2 - LO-AC (looks like 6.3v is used here) 3 - LO-AC (and here) 4 - HI-AC (and here) 5 - HI-AC (and here) 6 - AUDIO GND 7 - GND (must go to J-6 pin 2) 8 - N/C 9 - ANTENNA 10 - +5v 11 - COIN 2 NC 12 - COIN 2 NO 13 - COIN 1 NC 14 - COIN 1 NO 15 - -12v 16 - AUDIO 2 (black tank) 17 - AUDIO 1 (white tank) 18 - N/C 19 - N/C 20 - COIN COUNTER 21 - GND 22 - GND BOARD 2 [J-6]: ^^^^^^^^^^^^^^ 1 - GND (goes to control panels) 2 - GND (must go to J-3 pin 7) 3 - N/C 4 - N/C 5 - N/C 6 - N/C 7 - N/C 8 - N/C 9 - N/C 10 - White Tank LEFT Joystick DOWN 11 - White Tank RIGHT Joystick DOWN 12 - White Tank LEFT Joystick UP 13 - White Tank RIGHT Joystick UP 14 - N/C 15 - Black Tank LEFT Joystick DOWN 16 - Black Tank RIGHT Joystick DOWN 17 - Black Tank LEFT Joystick UP 18 - Black Tank RIGHT Joystick UP 19 - White Tank Fire button 20 - Black Tank Fire Button 21 - VIDEO 22 - VIDEO GND