PlayChoice10 Parts Side | Solder Side GND | A | 1 | GND (debug) | B | 2 | 2P Right (debug) | C | 3 | 2P Left (debug) | D | 4 | 2P Up (debug) | E | 5 | 2P Down +5V | F | 6 | 2P ButtonA +5V | H | 7 | 2P ButtonB (debug) | J | 8 | Button1/Channel Select (debug) | K | 9 | Button3/Game Select (debug) | L | 10| Button2/Channel Enter (?) | M | 11| Button4/Game Start (?) | N | 12| 1P Right (?) | P | 13| 1P Left +5V | R | 14| 1P Up (?) | S | 15| 1P Down (?) | T | 16| 1P ButtonA (?) | U | 17| 1P ButtonB GND | V | 18| GND Parts Side | Solder Side -------------------------+------------------------------- GND | A | 1 | GND GND | B | 2 | GND +5V | C | 3 | +5V +5V | D | 4 | +5V +12V | E | 5 | +12V | F | 6 | | H | 7 | Coin Switch #1 | J | 8 | Coin Switch #2 | K | 9 | Video Red (inv) | L | 10| Video Green (inv) GND | M | 11| GND | N | 12| Video Blue (inv) | P | 13| Video Sync | R | 14| | S | 15| -5V | T | 16| -5V (?) | U | 17| (?) | V | 18| | W | 19| (?) | X | 20| Audio (no amp) GND | Y | 21| GND GND | Z | 22| GND ------------------------------------------------------ Note: Connect Video Ground and Audio Ground to GND Video color signals need to be inverted for regular Jamma Audio signal needs to be amplified for regular Jamma