KNIGHTS OF THE ROUND

PARTS SIDE                         CKT SIDE
------------                       ------------           CNIO 2

  1   GND                           A  GND                 1 GND
  2   GND                           B  GND                 2 GND
  3   +5V                           C  +5V                 3 RIGHT
  4   +5V                           D  +5V                 4 LEFT
  5                                 E                      5 DOWN
  6   +12V                          F  +12V                6 UP
  7   KEY                           H  KEY                 7 ATTACK
  8   CTR 1                         J                      8 JUMP
  9   COIN LOCKOUT                  K  COIN LOCKOUT        9 COIN
 10   SP +                          L  SP-                10 START
 11                                 M                      
 12   VID RED                       N  VID GN             CNIO 3
 13   VID BL                        P  SYNC                1 +12V
 14   VID GND                       R  SVC                 2 +12V
 15   TEST                          S                      3
 16   COIN 1                        T  COIN 2              4
 17   1 START                       U  2 START             5 COIN LOCKOUT 3
 18   PL 1 UP                       V  PL 2 UP             6
 19   PL 1 DOWN                     W  PL 2 DOWN
 20   PL 1 LEFT                     X  PL 2 LEFT          CNIO 4
 21   PL 1 RIGHT                    Y  PL 2 RIGHT          1 GND
 22   PL 1 ATTACK                   Z  PL 2 ATTACK         2 GND
 23   PL 1 JUMP                     a  PL 2 JUMP           3 +12V
 24                                 b                      4 +12V
 25                                 c 
 26                                 d 
 27 GND                             e  GND  
 28 GND                             f  GND