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r40029 Sunday 26th July, 2015 at 07:43:55 UTC by kazblox
galaxia.c: more notes
[src/mame/drivers]galaxia.c

trunk/src/mame/drivers/galaxia.c
r248540r248541
33/*
44
55Galaxia by Zaccaria (1979)
6Also released in several regions as "Super Galaxians".
7Set regions are unknown, so all are currently Galaxia.
68
79Taken from an untested board.
810
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1113
1214This is not a direct pirate of Galaxian as you might think from the name.
1315The game uses a Signetics 2650A CPU with three 40-pin 2636 chips, which are
14responsible for sound and some video functions.
16responsible for basic sound and some video functions.
1517
1618Other than that, the video hardware looks like it's similar to Galaxian
1719(2 x 2114, 2 x 2101, 2 x EPROM) but there is no attack RAM and the graphics
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4850Astro Wars (port of Astro Fighter) is on a stripped down board of Galaxia,
4951using only one 2636 chip, less RAM, and no PROM.
5052
53Manual and Schematic for Galaxia can be found at:
54http://www.zzzaccaria.com/manuals/SuperGalaxiansTechnicalManual.zip
55http://www.zzzaccaria.com/manuals/GalaxiaSchematics.zip
56
5157---
5258
53HW has many similarities with quasar.c / cvs.c / zac2650.c
54
5559TODO:
56- fix colors, there's no color prom?!
57- stars background should be multi color
58- improve sound, maybe part discrete
60- correct color/star generation using info from Galaxia technical manual and schematics
61- add sound board emulation
5962- improve bullets
60- accurate astrowar sprite/bg sync
63- accurate sprite/bg sync in astrowar
6164
65NOTE: Are there unemulated waitstates? On real hardware, the speed of both
66Astrowars and Galaxia are a bit slower, as seen in these videos:
67https://www.youtube.com/watch?v=xHBrZJxIfzI
68https://www.youtube.com/watch?v=eSrQFBMeDlM
69
6270*/
6371
6472#include "emu.h"
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463471   ROM_LOAD( "astro.3d",  0x00400, 0x0400, CRC(822505aa) SHA1(f9d3465e14bb850a286f8b4f42aa0a4044413b67) )
464472ROM_END
465473
466
467474GAME( 1979, galaxia,  0,       galaxia,  galaxia, driver_device, 0, ROT90, "Zaccaria / Zelco", "Galaxia (set 1)", GAME_IMPERFECT_COLORS | GAME_IMPERFECT_SOUND | GAME_IMPERFECT_GRAPHICS )
468475GAME( 1979, galaxiaa, galaxia, galaxia,  galaxia, driver_device, 0, ROT90, "Zaccaria / Zelco", "Galaxia (set 2)", GAME_IMPERFECT_COLORS | GAME_IMPERFECT_SOUND | GAME_IMPERFECT_GRAPHICS )
469476GAME( 1979, galaxiab, galaxia, galaxia,  galaxia, driver_device, 0, ROT90, "Zaccaria / Zelco", "Galaxia (set 3)", GAME_IMPERFECT_COLORS | GAME_IMPERFECT_SOUND | GAME_IMPERFECT_GRAPHICS )


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