Path: utzoo!attcan!uunet!nems!ark1!uakari.primate.wisc.edu!sdd.hp.com!ucsd!rutgers!cbmvax!grr
From: grr@cbmvax.commodore.com (George Robbins)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: old A2000 MMU/CPU memory board
Keywords: Help!!!!
Message-ID: <12579@cbmvax.commodore.com>
Date: 12 Jun 90 10:29:56 GMT
References: <145@cutmcvax.OZ>
Reply-To: grr@cbmvax (George Robbins)
Organization: Commodore, West Chester, PA
Lines: 19

In article <145@cutmcvax.OZ> mestona@cutmcvax.oz (meston anthony) writes:
> I have an _OLD_ A2000 (you know, not the B2000) that has 512k chip on the main
> mother board. (sob..) The machine has a memory board in the CPU slot with 512k
> soldered, and sockets for another 512k AND.... FIVE JUMPERS... I found some
> memory and put it in.

These boards were made as a stopgap when it was decided that the A2000 should
have 1M total memory, even though the PCB only only had provision for 512K of
memory.  Adding memory to the additional sockets isn't supported and tends to
not work especially well.

You're better off just getting an Commodore A2058 or equivalent 3-rd party
memory expansion.  If your expansion card works reliably keep it, otherwise
yank it and stick more chips in the Zorro expansion card.

-- 
George Robbins - now working for,     uucp:   {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing:   domain: grr@cbmvax.commodore.com
Commodore, Engineering Department     phone:  215-431-9349 (only by moonlite)