Exidy  Mouse Trap

 COMP SID      J1   CKT SIDE                      P5          P21

 ---------          --------                      --          ---

  1 Gnd              A Anti-stat                  1 GND       1 VID RED

  2                  B                            2 +12V      2 VID GN

  3 Player 1 ind     C                            3 +12V      3 VID BL

  4 Player 2 ind     D                            4 -12V      4 SYNC

  5  DOWN            E  COIN 1                    5           5 H SYNC

  6  FIRE            F  UP                        6 -12V      6 V SYNC

  7  RIGHT           H  LEFT                      7 SP-A      7 GND

  8  1 START         J  2 START                   8 +5V       8 GND

  9                  K                            9 SP-B      9

 10  GND             L                           10 +12V     10

 11   |              M  +12V                     11 -5V

 12   |              N  -5V                      12 -12V

 13   |              P                           13 -12V

 14   |              R  +5V                      14 +12V

 15   |              S  +5V                      15 GND

 16   |              T  +5V

 17   |              U  +5V

 18   |              V  +5V

 19   |              W

 20   |              X

 21  GND             Y

 22                  Z