Roller Jammer,  Nichibutsu
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             *** (Parts?)          |             (Solder?)
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                   1P       UP | 1 | A | Down     1P
                   1P     Left | 2 | B | Right    1P
                   1P  L.Punch | 3 | C | R.Punch  1P
                   2P       UP | 4 | D | Down     2P
                   2P     Left | 5 | E | Right    2P
                   2P  L.Punch | 6 | F | R.Punch  2P
                        Coin 2 | 7 | H | Coin 1
                   1P     Jump | 8 | J | GND
                           GND | 9 | K | GND
                            +5 |10 | L | +5
                           +12 |11 | M | -5
                            -5 |12 | N | +12
                            +5 |13 | P | +5
                           GND |14 | R | GND
                           GND |15 | S | GND
                   1P    Start |16 | T | Start    2P
                          Test |17 | U | Service
                Coin Counter 1 |18 | V | Coin Counter 2
                     Speaker + |19 | W | Speaker -
                   2p     Jump |20 | X | Video Red
                   Video Green |21 | Y | Video Blue
                     Video Gnd |22 | Z | Video Sync
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