RAM 4864 and 4164 and Z80

Date: 2006-06-21 21:02:07


I recently bought a P500, the seller said that i didn't know if was
working. That mostly means it doesn't work. So I opened up the P500 to
take a look inside. There was a very nice yellow sticker on the
motherboard with the following text: DEFEKT

The first thing I noticed was that all the RAM has been removed from the
motherboard (Desoldered)

I found on the schematics that this are dynamic RAM's 4864. My question is
now can I replace them with 4164's from a 64 (the pinout seems to be the

Also the Z80 socket is empty. Can I drop in a z80 or is this not neccesary
for the working of the P500.

Greetings Richard

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