Document Title: [GalaxianMap.html (html file)]
Galaxians hardware info
-----------------------
Compiled from information provided by friends and Uncles on RGVAC.
AAAAAA
111111AAAAAAAAAA DDDDDDDD Schem function
HEX 5432109876543210 R/W 76543210 name
5000-57FF 01010AAAAAAAAAAA R/W DDDDDDDD !Vram Character ram
5800-583F 01011AAAAAAAAAAA R/W DDDDDDDD !OBJRAM Screen attributes
5840-585F 01011AAAAAAAAAAA R/W DDDDDDDD !OBJRAM Sprites
5860-5FFF 01011AAAAAAAAAAA R/W DDDDDDDD !OBJRAM Bullets
6000 0110000000000000 R -------D !SW0 coin1
6000 0110000000000000 R ------D- !SW0 coin2
6000 0110000000000000 R -----D-- !SW0 p1 left
6000 0110000000000000 R ----D--- !SW0 p1 right
6000 0110000000000000 R ---D---- !SW0 p1shoot
6000 0110000000000000 R --D----- !SW0 table ??
6000 0110000000000000 R -D------ !SW0 test
6000 0110000000000000 R D------- !SW0 service
6000 0110000000000001 W -------D !DRIVER lamp 1 ??
6001 0110000000000001 W -------D !DRIVER lamp 2 ??
6002 0110000000000010 W -------D !DRIVER lamp 3 ??
6003 0110000000000011 W -------D !DRIVER coin control
6004 0110000000000100 W -------D !DRIVER Background lfo freq bit0
6005 0110000000000101 W -------D !DRIVER Background lfo freq bit1
6006 0110000000000110 W -------D !DRIVER Background lfo freq bit2
6007 0110000000000111 W -------D !DRIVER Background lfo freq bit3
6800 0110100000000000 R -------D !SW1 1p start
6800 0110100000000000 R ------D- !SW1 2p start
6800 0110100000000000 R -----D-- !SW1 p2 left
6800 0110100000000000 R ----D--- !SW1 p2 right
6800 0110100000000000 R ---D---- !SW1 p2 shoot
6800 0110100000000000 R --D----- !SW1 no used
6800 0110100000000000 R -D------ !SW1 dip sw1
6800 0110100000000000 R D------- !SW1 dip sw2
6800 0110100000000000 W -------D !SOUND reset background F1
(1=reset ?)
6801 0110100000000001 W -------D !SOUND reset background F2
6802 0110100000000010 W -------D !SOUND reset background F3
6803 0110100000000011 W -------D !SOUND Noise on/off
6804 0110100000000100 W -------D !SOUND not used
6805 0110100000000101 W -------D !SOUND shoot on/off
6806 0110100000000110 W -------D !SOUND Vol of f1
6807 0110100000000111 W -------D !SOUND Vol of f2
7000 0111000000000000 R -------D !DIPSW dip sw 3
7000 0111000000000000 R ------D- !DIPSW dip sw 4
7000 0111000000000000 R -----D-- !DIPSW dip sw 5
7000 0111000000000000 R ----D--- !DIPSW dip s2 6
7001 0111000000000001 W -------D 9Nregen NMIon
7004 0111000000000100 W -------D 9Nregen stars on
7006 0111000000000110 W -------D 9Nregen hflip
7007 0111000000000111 W -------D 9Nregen vflip
Note: 9n reg,other bits used on moon cresta for extra graphics rom control.
7800 0111100000000000 R -------- !wdr watchdog reset
7800 0111100000000000 W DDDDDDDD !pitch Sound Fx base frequency