Re: C64-accelerator and cloning PAL/GAL chips

From: Nicolas Welte (
Date: 2001-03-16 13:06:25

Ruud Baltissen wrote:
> 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?

I have almost the same problem: I have a dead CMD RAMlink, and I know that at
least one GAL chip is dead, probably more. Someone gave me a 2nd dead RAMlink
to swap GALs, but it still isn't working. Since I don't know which chip is
dead, and I don't want to go through CMD service in the USA (too expensive),
it would be good to have the instructions for cloning GAL and PAL chips of
Commodore related equipment.

BTW, does anyone know of a cheap DIY GAL programmer, either for PC, Amiga, or

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