Sega System 16

SOLDER SIDE                          COMP SIDE
-----------------------------------------------------

 A  GND                              1   GND
 B  GND                              2   GND
 C  +5V                              3   +5V
 D  +5V                              4   +5V
 E  +12V                             5   +12V
 F  CTR 2                            6   CTR 1
 H  KEY                              7   KEY
 J  P2 Button 3                      8   P1 Button 3
 K  P2 Button 2                      9   P1 Button 2
 L  P2 Button 1                     10   P1 Button 1
 M                                  11
 N  PL 2 DOWN                       12   PL 1 DOWN
 P  PL 2 UP                         13   PL 1 UP
 R  PL 2 RIGHT                      14   PL 1 RIGHT
 S  PL 2 LEFT                       15   PL 1 LEFT
 T                                  16
 U                                  17
 V                                  18

 X  1 PL START                      20   COIN 1
 Y  2 PL START                      21   COIN 2
 Z                                  22   TEST
 a                                  23   SVC
 b  SP-                             24   SP+
 c  VID GN                          25   VID RED
 d  SYNC                            26   VID BL
 e  GND                             27   GND
 f  GND                             28   GND