Catalogue of Arcade Emulation Software - the Absolute Reference

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Galaga (Namco rev. B)

0.21 [Nicola Salmoria, Martin Scragg]


- Set DIP SERVICE MODE = ON, press F3 and use movement & fire to change & hear sound effects.


- The star line and pixel locations of the Galaga starfield pulled directly from a clocked stepping of the 05 starfield. The chip was clocked on a test rig with hblank and vblank simulated, each X & Y location of a star being recorded along with it's color value. Because the starfield begins generating stars at the point in time it's enabled the exact horizontal location of the stars on Galaga depends on the length of time of the POST for the original board. Two control bits determine which of two sets are displayed set 0 or 1 and simultaneously 2 or 3. There are 63 stars in each set, 126 displayed at any one time.


- 0.112u2: Replaced 3x DAC with Discrete sound.

- 0.112u1: Replaced implementation of Namco 54xx sound chip with new MB8844 CPU core running the original embedded ROM code. Removed old sound core [Nicola Salmora, Ernesto Corvi, Guru]. Added MB88xx (256000 Hz) CPU4 with 1k rom and replaced Namco 54XX with 3x DAC sound.

- 0.107u4: Added new cpu2 rom to clone Galaga (Midway set 1 with fast shoot hack).

- 0.107u3: David Widel added clone Galaga (Midway set 1 with fast shoot hack).

- 0.100u3: Pierpaolo Prazzoli added missing vertical movement to clone Gatsbee.

- 0.94u5: James Rowan corrected Galaga and Bosconian starfields.

- 0.94u2: Derrick Renaud added proper watchdogs to Bosconian, Galaga, Pole Position and Xevious.

- 0.90u3: Derrick Renaud added proper filters to the Namco52 sample player of Bosconian, Galaga, Pole Position and Xevious. Adjusted relative effect volumes per schematics.

- 0.90u2: Derrick Renaud updated the Namco 54xx noise sound and added the R/C values to Bosconian, Galaga, Pole Position and Xevious.

- 0.89u5: Jarek Burczynski improved the Namco 54xx Noise Generator (Type A and B emulated, type C algo still unknown). Removed Samples sound and bang.wav sample.

- 0.79u1: Removed 'init.wav' sample. Added clones Galaga (Namco rev. B) and (Midway set 2). Galaga uses now better dumps of the PROMs, with the unused top 4 bits set to 0 [Nicola Salmoria]. Removed also these galaga clones: nebulbee (copyright/name change), galagab2 (mix 'n match of ROMs from other sets), galaga84 (copyright/gfx change) and galagads (1-byte hack to get fast shoot, reproducible with this line in cheat.dat: galaga:1:070D:0D:100:Fast Shoot). Changed clock speed of the 3x Z80 CPUs to 3072000 Hz and added Namco 54XX (1536000 Hz) sound.

- 0.70: Changed description from clone 'Catsbee' to 'Gatsbee'.

- 0.68: Added clone Catsbee (1984 Uchida).

- 25th April 2003: David Haywood added Catsbee to the Galaga driver.

- 14th April 2003: Guru - Catsbee (Uchida 1984) arrived from Taucher.

- 0.63: Added 'init.wav' to the samples.

- 25th November 2002: SUZ fixed the Galaga init sound.

- 30th June 2002: SUZ fixed a coin lockout bug in the Galaga driver, and added explosion sound to the startup.

- 6th October 2001: William Kucharski fixed the Galaga explosion sample code to play the sample during bootup as well.

- 0.53: Scott Brasington fixed Free Play mode in Galaga.

- 0.35RC1: Zsolt Vasvari added clone Nebulous Bee (hack 1984).

- 9th June 1999: Zsolt Vasvari added a Galaga hack called Nebulous Bee.

- 0.35b13: Valerio Verrando added clone Galaga '84 (hack 1984).

- 14th May 1999: Valerio Verrando added Galaga '84 to the Galaga driver.

- 5th March 1999: Aaron Giles has fixed more drivers to work with rotation handling (galaga, frogger, burger time and their clones).

- 12th February 1999: Juergen Buchmueller has made the ASM Z80 core even better. Speed improvements range from 25% (Galaga) to 45% (Tapper). It's still far from complete, and daisy-chaining doesn't work.

- 0.35b1: Added prom ($220 - unknown).

- 0.33b7: Removed Galaga (bootleg) and added clone Galaga (fast shoot). Renamed (galaga) to (galagamw) and (galaganm) to (galaga).

- 0.31: Marco Cassili added clone Galaga (bootleg). fixed double size sprites in Galaga when screen is flipped.

- 0.29: Martin Scragg fixed blinking in the Galaga starfield. Nicola supports rotation in Galaga and the attract mode of Galaga works correctly. And Valerio Verrando fixed also Galaga.

- 0.27: Added clones Galaga (Namco) and Gallag (bootleg Galaga). In Galaga, star scroll speed in levels > 32 should be correct now.

- 0.26a: Galaga has correct stars speed now.

- 0.25: Refixed the Galaga hiscore bug (it happened when syncing Mirko sources with Nicola's ones).

- 0.23: Mirko Buffoni fixed Galaga hiscore saving, which is now flawlessy supported!

- 0.21.5: Nicola fixed a bug in Memory addressing that caused Galaga to trash under DOS.

- 0.21: Nicola Salmoria added Galaga (Namco 1981) and Galaga (bootleg). The bootleg version use a Z80 that emulates custom I/O chips. Very special thanks to Martin Scragg that provided us crucial information on custom I/O chips. Issues: Explosions are implemented in a tricky way (reset game and you'll see!) and Hiscore support not ready yet.

LEVELS: 255 (endless)

Other Emulators:

* CottAGE

* HiVE

* JEmu2

* Retrocade

* Sparcade


Category: Galaxian

Recommended Games:

Galaga - Namco Classics Collection Vol.1

Galaga '88



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Romset: 39 kb / 15 files / 22.9 zip