"SEGA Interface"

This is for Sega's "E-SWAT" game, from 1989.  It is referred to in the book
as the "Sega Interface", so I would assume that it's their own standard. 

Why they don't just use JAMMA, I'm not sure.  This doesn't provide anything 
that JAMMA doesn't, and, in fact, is missing the tilt switch connection.

Anyway, here it is:

-----------------------------------------------------------
Component Side              |                   Solder Side
----------------------------+------------------------------
                    GND   1 | A   GND     
                    GND   2 | B   GND
                    +5V   3 | C   +5V
                    +5V   4 | D   +5V
                   +12V   5 | E   +12V
           Coin Meter 1   6 | F   Coin Meter 2
                    N/C   7 | H   N/C
       Special Weapon 1   8 | J   Special Weapon 2
                Shoot 1   9 | K   Shoot 1
                 Jump 1  10 | L   Jump 1
                    N/C  11 | M   N/C
                 Down 1  12 | N   Down 2
                   Up 1  13 | P   Up 2
                Right 1  14 | R   Right 2
                 Left 1  15 | S   Left 2
                    N/C  16 | T   N/C
                    N/C  17 | U   N/C
                    N/C  18 | V   N/C
                    N/C  19 | W   N/C
                 Coin 1  20 | X   Start 1
                 Coin 2  21 | Y   Start 2
                   Test  22 | Z   N/C
                Service  23 | a   N/C
              Speaker +  24 | b   Speaker -
                   Red   25 | c   Green
                  Blue   26 | d   Composite Sync
                   GND   27 | e   GND
                   GND   28 | f   GND
-----------------------------------------------------------