DORODON UPL 1983 COMPONENT | SOLDER ---------------------+---------------------- GND | 1 | A | GND GND | 2 | B | GND +5V | 3 | C | +5V +5V | 4 | D | +5V | 5 | E | | 6 | F | +5V o----- | 7 | G | | +12V | 8 | H | +12V | | 9 | I | | |10 | J | Speaker ----------- |11 | K | Speaker | Counter | |12 | L | ----------- 1P.Up |13 | M | 2P.Up | |14 | N | | 1P.Right |15 | O | 2P.Right | |16 | P | Coin o------- 1P.Down |17 | Q | 2P.Down |18 | R | 1P.Left |19 | S | 2P.Left Please connect Coin Counter. Other- |20 | T | wise credit does not work when 1P.Start |21 | U | 2P.Start inserting Coin. If you dont have |22 | V | Red Counter, please use 1Kohm resistors |23 | W | Green Instead. Coin 1 |24 | X | Blue Coin 2 |25 | Y | Sync GND |26 | Z | GND GND |27 | a | GND GND |28 | b | GND