Williams WPC (Dot Matrix)
Model number : 60001
Main CPU : Motorola M6809 (@ 2 Mhz)
Sound CPU : Motorola M6809 (@ 2 Mhz)
Sound Chips : Yamaha YM2151 (@ 3.579545 Mhz), DAC, HC55516
Pfutzenreuter programmed this game almost entirely on a blank switch and lamp matrix. He left for vacation during design, with the game done except for the sound effects. He left instructions for what sounds should he put on what hex codes, and Heitsch just filled them in and the game automatically used them.