Old Taito 3 board set ===================== These pinouts are not 100% complete, but there is enough info for an upright JAMMA conversion. There is an upright/cocktail pin somewhere and 2P left/right/fire buttons are still unidentified. The HALT pin was the one that had me going for a while. I couldn't get the game to run at all outside the cocktail harness until I wired this sucker low. Lunar Rescue ('80) Space Invaders (late '70s) Solder Sound Board Parts ============================================= GND | A | 1 | GND GND | B | 2 | GND GND | C | 3 | GND Speaker | D | 4 | Speaker +12V | E | 5 | +12V KEY | F | 6 | KEY (audio amp?) +18V | H | 7 | Not Used (tied to H?) (for audio amp) GND | J | 8 | GND (for audio amp) +5V | K | 9 | +5V Not Used | L | 10| Halt (tie low to run) Video Gnd? | M | 11| Reset 2P Start | N | 12| Slam 1P Start | P | 13| Coin 1P Right | R | 14| 1P Fire 1P Left | S | 15| Red Blue | T | 16| P2 Right (cocktail) Green | U | 17| P2 Left (cocktail) Csync | V | 18| P2 Fire Csync is "standard" JAMMA-like active low sync. Solder ROM Board Parts ============================================= +5V | A | 1 | +5V +5V | B | 2 | +5V +12V | C | 3 | +12V +12V | D | 4 | +12V -5V | E | 5 | -5V (not used?) +15V | F | 6 | +15V (not used?) KEY | H | 7 | KEY N/C | J | 8 | ? N/C | K | 9 | ? N/C | L | 10| ? N/C | M | 11| ? N/C | N | 12| ? N/C | P | 13| ? GND | R | 14| GND GND | S | 15| GND GND | T | 16| GND GND | U | 17| GND N/C | V | 18| ? The +15V pins don't appear to be used on either of my board sets (Lunar Rescue or Space Invaders) and the game does work without them wired to anything. Regards, John. * John Keay ! Texas Instruments Ltd. * * keay@tiuk.ti.com ! Bedford, U.K. * * Disclaimer: All opinions expressed herein are personal. etc etc *