Mailist to discuss all issues regarding the Digitech GSP-2101 Guitar FX Processor

I don't know what the diference in the chips are, but have been told just not to mix the two.

wulffert wrote:

After replacing the EPROMS and the RAM, the unit is up and running.
It looks like the SDISC chips are fried also, there are no effects
and I can only use bypass. I did some signal tracing and verified
that the SDISC chips are both gone. My 2101 was loaned to a friend, I
think he fried it, some kind of power surge (so he says). Ironically
the Zilog chip is fine. Anyone know what the difference is between
SDISC I and II chips are? I have the SDISC II ones.

Incidentally, I am using a Dallas 1245Y ram module, and I did a mod
to the battery backup circuit (battery is no longer needed because
the 1245y has it built in)