C64-accelerator

From: Ruud Baltissen (Ruud.Baltissen_at_abp.nl)
Date: 2001-03-16 12:06:53

Hallo allemaal,

I was playing with the thoughts to make a SCH of the RoBmoeller card to easy
the repair. But the repair has no priority. But seconds after sending the
previous email it occured to me that if you replace the 65816 with a fast
6502 (I have about 20 3 MHz-versions), anyone can bennefit from the design.

1st question: any one interested?

But I do need some help. There are 3 PALs on it (from memory): two 16L8 and
a 16R8. Determine what pins are in- or output should not be so difficult.
The problem is to find out what the contents are. If the PALs only contain
gates (16L8 ???), no problem. But if the contain flipflops (16R8: R =
register ???), then what to do?

2nd question: who can feed me some quick info or tricks on this subject?

Thanks.

Groetjes, Ruud

http://Ruud.C64.org



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