Galaga ROMs
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The Galaga ROMs are standard Intel 2732A's (mine are 300ns).
They are located on the motherboard as follows:

Galaga CPU board (with the edge connector):
3200A  -  3N
3300B  -  3M
3400C  -  3L
3500D  -  3K
3600E  -  3J
3700G  -  3E

Galaga Video board:
2600J  -  4L
2700K  -  4F
2800L  -  4D


The ROMS with the .GAL extension are the original version of Galaga.
All shots fire normally and the Galaga Cheat works.

The .G1 files are several different revisions.  If you replace 3600E.GAL with
3600E.G1 you will get a game that gives you shots that travel several times
faster than normal.  (Just you, not the enemies.)

If you replace the other 3 (only), you will get a game that does NOT allow
the infamous Galaga cheat.  When I replaced chip 3200A with the .G1, I could
not fire, when I replaced 3300B, none of my controls worked.  So I assume
that if you replace both of these, it will work (I didn't have time to try.)
If you replace 3500D only, nothing apparent happens- I'd bet that this removes
the Galaga Cheat (I didn't have time to test it.)

Rik          (z_morganrw@ccsvax.sfasu.edu)

