SPACE INVADERS MIDWAY & MODEL RACING



     CPU                                 AUDIO

 18 PIN CONN            16pin (11pin Model Racing)  13pin (8pin Model Racing)


    1 +5V                  1  GND                      1  GND

    2 +5V                  2  COIN SW                  2  1 RIGHT

    3 +12V                 3  COIN SW                  3  1 LEFT

    4 +12V                 4  GND                      4  TILT

    5 -5V                  5  CTR                      5  KEY

    6                      6  RESET                    6  1 FIRE

    7                      7                           7  1 START

    8                      8  SP                       8  2 START

    9                      9  SP

   10                     10  AUDIO VOLTAGE RETURN

   11                     11  AUDIO VOLTAGE (+18V)

   12

   13

   14 GND (- SENSE)

   15 GND

   16

   17 MONITOR

   18 MONITOR




MIDWAY Connettore centrale Audio board