118 lines
5.4 KiB
Plaintext
118 lines
5.4 KiB
Plaintext
G A L A G A
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=============
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by Brian Murray
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(brian@demon.csd.unsw.edu.au)
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There are apparently many different galaga implementations, this one
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happens to be mine. I don't know how I would identify my particular
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boards, but I'll give as much as I can. (They were from a tabletop
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if that matters). There are two boards, both with blue solder masks.
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The top one (slightly larger) is the CPU board, has the 4 processors
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and program EPROMS, and holds a small credit-card sized daughter
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board that plugs into a 28-pin DIP socket near the EPROMS. It also has
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'DG-09-2' silk-screened in one corner near the main connector. The bottom
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board is the video board. It has a small 5 pin connector in one corner
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for the video output signal, wired as follows :
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(closest to corner of board) 1 - Red
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2 - Blue
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3 - Green
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4 - Sync
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5 - Video GND
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Note in my game, this connector has had wires soldered straight to it
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and these brought around and soldered to the main connector in the
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positions shown below, and the monitor wired to this connector instead.
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Galaga DIP switch settings. The following information has been copied
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from wiretap.spies.com (original submission by z_morganrw@ccsvax.sfasu.edu)
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but slight changes have been made to reflect my game.
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There are two sets of DIP switches on the Galaga CPU board. I'll label them
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SWA and SWB following the schematic. SWA is closest to the corner of the
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board (located at 11C), SWB closest to the main connector (located at 11E).
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Switch bank SWA sets the number of credits, lives and lives given at certain
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scores. (This is identical to switch bank 6K as specified by
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z_morganrw@ccsvax.sfasu.edu) :
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SW1 SW2 SW3 (Coins per Credit)
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--------------------------------------------
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ON ON ON FREE PLAY (although this doesn't seem to work for me)
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ON ON OFF 4 Coins 1 Credit
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ON OFF ON 3 Coins 1 Credit
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ON OFF OFF 2 Coins 1 Credit
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OFF ON ON 2 Coins 3 Credits
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OFF ON OFF 1 Coin 3 Credits
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OFF OFF ON 1 Coin 2 Credits
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OFF OFF OFF 1 Coin 1 Credit
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SW4 SW5 SW6 (Bonus ships awarded.)
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Began with 2, 3, Began with 5
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or 4 fighters fighters.
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----------------------------------------------------------------
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1st SHIP 20000 1st SHIP 30000
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ON ON OFF 2nd SHIP 60000 2nd SHIP 100000
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AND EVERY 60000 AND EVERY 100000
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-----------------------------------------------
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1st SHIP 20000 1st SHIP 30000
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ON OFF ON 2nd SHIP 70000 2nd SHIP 120000
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AND EVERY 70000 AND EVERY 120000
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-----------------------------------------------
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1st SHIP 20000 1st SHIP 30000
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ON OFF OFF 2nd SHIP 80000 2nd SHIP 150000
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AND EVERY 80000 AND EVERY 150000
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-----------------------------------------------
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1st SHIP 30000 1st SHIP 30000
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OFF ON ON 2nd SHIP 100000 2nd SHIP 100000
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AND EVERY 100000
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-----------------------------------------------
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1st SHIP 30000 1st SHIP 30000
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OFF ON OFF 2nd SHIP 120000 2nd SHIP 120000
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AND EVERY 120000
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-----------------------------------------------
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1st SHIP 20000 1st SHIP 30000
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OFF OFF ON 2nd SHIP 60000 2nd SHIP 150000
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-----------------------------------------------
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1st SHIP 30000 ONE SHIP 30000
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OFF OFF OFF 2nd SHIP 80000 ONLY
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-----------------------------------------------
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ON ON ON NO BONUS SHIPS GIVEN WITH THIS SETTING
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----------------------------------------------------------------
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SW7 SW8 (Number of fighters to start with)
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----------------------------------------------------------------
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ON ON 2 Space Fighters
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ON OFF 3 Space Fighters
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OFF ON 4 Space Fighters
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OFF OFF 5 Space Fighters
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SWB is used for setting the difficulty of Galaga. Switches SW4, SW7,
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and SW8 don't appear to do anything. (This differs slightly
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from switch bank 6J as specified by z_morganrw@ccsvax.sfasu.edu) :
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SW1 SW2
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-------------------------------------------------
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OFF OFF Rank "A" - Easiest level of play.
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ON ON Rank "B"
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OFF ON Rank "C"
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ON OFF Rank "D" - Hardest level of play.
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SW3
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-------------------------------------------------
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ON Some sort of test/debug mode, do not use
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OFF Normal operation
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SW5 (The "damn the phone's ringing" switch :-)
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-------------------------------------------------
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ON Freeze game
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OFF Normal operation
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SW6
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-------------------------------------------------
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ON Automatic rack advance (cheat mode).
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OFF Normal operation
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