(June 21, 2001)

Tested the joystick and the buttons with a multimeter.
While I had the control panel open, I mapped the wireing to the control panel:

Female plug that connects the control panel to the main cabinet wire harness.

Pin 2 to Pin 1 [Fire]   Pin 2 to Pin 3 [Inviso]   Pin 2 to Pin 4 [Hyperspace]   Pin 2 to Pin 5 [Smart Bomb]   Pin 2 to Pin 6 [Thrust]   Pin 2 to Pin 7 [Reverse]     Pin 2 to Pin 8 [Player 1]   Pin 2 to Pin 9 [Player 2]     Pin 2 to Pin 10 --------   Pin 2 to Pin 11 [Joystick Up]   Pin 2 to Pin 12 [Joystick Down]

Started my keyboard hack interface by drilling the holes

Mapping:


If you close a circuit of R4 and B3 the keyboard returns 'e'
If you close a circuit of R3 and B1 the keyboard returns '1'
With MAME I am associating the keystroke of 'e' with Hyperspace
and '1' with start player 1.

R3 pin 2     B1 = 1 = [Player 1] pin 8     B2 = 2 = [Player 2] pin 9

R4 pin 2     B1 = a = [Fire] pin 1     B2 = w = [Inviso] pin 3     B3 = e = [Hyperspace] pin 4     B4 = r = [Smart Bomb] pin 5     B5 = u = [Thrust] pin 6     B6 = i = [Reverse] pin 7     B7 = o = [Joy Up] pin 11     B8 = p = [Joy Down] pin 12

If it not clear how the wiring will work, maybe this diag will help