Date: 2006-06-22 14:07:55
Op Do, 22 juni, 2006 7:02 am schreef William Levak: > On Wed, 21 Jun 2006 firstname.lastname@example.org wrote: > > >> Date: Wed, 21 Jun 2006 21:02:07 +0200 (CEST) >> From: email@example.com >> Reply-To: firstname.lastname@example.org >> To: email@example.com >> Subject: RAM 4864 and 4164 and Z80 >> >> >> Hello, >> >> >> 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 same.) > > The schematic lists the RAM as 4864-2, which is equivalent to 4164-15, > 2164-15, 4564-15, 6665-15, or 3764-15. > > >> Also the Z80 socket is empty. Can I drop in a z80 or is this not >> neccesary for the working of the P500. > > It should not need it to run BASIC. > > > Message was sent through the cbm-hackers mailing list > > Hi, I'm going to buy a lot of IC sockets this weekend and put in the memory. I found out that the missing chip is not the Z80 but a 6526 (Thanks Bill D). I will drop a message if the P500 is working. Greetings Richard Message was sent through the cbm-hackers mailing list
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