Mr. Viking  Pinouts
Midway<Sega, 1984

Game Logic Board, part. no. A084-91718-CA64

I cannot guarantee that the solder side is "A..Z" and the parts side is
"1..22".  But whichever side is which, each letter and number should be
labeled with the correct pinout.  This information was extracted from the
Up 'N Down manual.

Note:  All these other games should also match this pinout:  Flicky, SWAT,
Watermatch, Up'n'Down, and Bullfight.  The controls for all these games
should be exactly the same - one 8-way joystick plus 1 or 2 buttons.  This
series of six games was available as a six-pack of dedicated games, circuit
board conversion kits for Frogger or Zaxxon, and ROM pack conversion kits.
Thus, you may be able to convert from one game to another by swapping ROMs.
I believe all the games have vertically-oriented monitors.


                       SOLDER SIDE     PARTS SIDE
                       -----------      ---------
      (Common for 15,16,18) Gnd   A   1   Gnd
                            Gnd   B   2   Gnd
                            +5V   C   3   +5V
                                  D   4   +5V
                                  E   5   Coin Meter
                                  F   6   +12V
                                  H   7  
                                  J   8  
                                  K   9   P1 Jump
                                  L   10 
                                  M   11  P1 Down 
                                  N   12  P1 Up
                                  P   13  P1 Right
                                  R   14  P1 Left
                       1P Start   S   15  Coin #1
                       2P Start   T   16  Coin #2
                                  U   17  Test
                                  V   18  Credit
                           Spkr   W   19  Spkr
                          Green   X   20  Red
                 Neg. Comp Sync   Y   21  Blue
              (Video Color) Gnd   Z   22  Gnd (Video Sync)