Galaga pinouts. This also works on Midway's Mappy game GALAGA/MAPPY PARTS SIDE | SOLDER SIDE ------------------------------------|-------------------------------------- LOGIC GND | A | 1 | LOGIC GND --------------------------------|---|---|---------------------------------- SPKR | B | 2 | SPKR (Not sure of polarity) --------------------------------|---|---|---------------------------------- --- | C | 3 | COIN METER --------------------------------|---|---|---------------------------------- --- | D | 4 | --- --------------------------------|---|---|---------------------------------- | E | 5 | --------------------------------|---|---|---------------------------------- +5v | F | 6 | +5v --------------------------------|---|---|---------------------------------- LOGIC GND | H | 7 | LOGIC GND --------------------------------|---|---|---------------------------------- CREDIT SW | J | 8 | TEST SWITCH (Tilt connected to this) --------------------------------|---|---|---------------------------------- (2nd coin mech also) 1 COIN SW | K | 9 | --------------------------------|---|---|---------------------------------- 1P START | L | 10| 2P START --------------------------------|---|---|---------------------------------- (To rapid fire brd #7) FIRE | M | 11| --------------------------------|---|---|---------------------------------- MOVE LEFT | N | 12| --------------------------------|---|---|---------------------------------- | P | 13| --------------------------------|---|---|---------------------------------- MOVE RIGHT | R | 14| --------------------------------|---|---|---------------------------------- | S | 15| --------------------------------|---|---|---------------------------------- --- | T | 16| --- --------------------------------|---|---|---------------------------------- --- | U | 17| --- --------------------------------|---|---|---------------------------------- --- | V | 18| --- --------------------------------|---|---|---------------------------------- --- | W | 19| --- --------------------------------|---|---|---------------------------------- | X | 20| --------------------------------|---|---|---------------------------------- | Y | 21| --------------------------------|---|---|---------------------------------- LOGIC GND | Z | 22| LOGIC GND --------------------------------------------------------------------------- On the CPU board there is an additional 3-part connector. This is power. It's wired as follows: 1 - +12v 2 - GND 3 - +5v On the Video board, there is an additional 6-part connector. This is the video connector. It's wired as follows: 1 - RED 2 - GRN 3 - BLU 4 - SYNC 5 - VIDEO GND 6 - (Not used) Galaga also has the option of a Rapid Fire board. This is a small board that allows the fire button to be held down and your ship to continuously fire shots at the enemy. Holding this board with the circuits facing you and the connectors on the bottom, the pins are numbered 1-9 (with #3 missing). The top set of connectors (J-1) is used for rapid fire, the bottom set (J-2) is used for single fire. It's wired as follows: 1 - (Not used) 2 - (Not used) 3 - (Not present) 4 - (Not used) 5 - FIRE BUTTON (GND) 6 - LOGIC GND 7 - FIRE (From Galaga CPU board) 8 - FIRE BUTTON 9 - +5v z_morganrw@ccsvax.sfasu.edu Addendum ======== From: vecoven@montefiore.ulg.ac.be (Frederic Vecoven) Newsgroups: rec.games.video.arcade.collecting Subject: GALAGA error messagesFor information : Date: Thu, 23 Feb 1995 10:18:57 MET Here are the error messages displayed by Galaga. (original boards set, and pirated one !) 2 boards Galaga (midway) Display Description RAM OK All RAMs are good RAM 0L RAM located on Video PC board at position 1K is bad RAM 0H RAM located on Video PC board at position 1K is bad RAM 1L RAM located on Video PC board at position 1K is bad RAM 1H RAM located on Video PC board at position 1K is bad RAM 2L RAM located on Video PC board at position 3E is bad RAM 2H RAM located on Video PC board at position 3F is bad RAM 3L RAM located on Video PC board at position 3K is bad RAM 3H RAM located on Video PC board at position 3L is bad RAM 4L RAM located on Video PC board at position 3H is bad RAM 4H RAM located on Video PC board at position 3J is bad ROM OK All ROMs are good ROM 01 ROM located on CPU PC board at position 3N is bad ROM 02 ROM located on CPU PC board at position 3M is bad ROM 03 ROM located on CPU PC board at position 3L is bad ROM 04 ROM located on CPU PC board at position 3K is bad ROM 11 ROM located on CPU PC board at position 3J is bad ROM 21 ROM located on CPU PC board at position 3E is bad