Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!rochester!rit!ultb!clf3678
From: clf3678@ultb.UUCP (C.L. Freemesser)
Newsgroups: comp.sys.atari.st
Subject: Re: RAM upgrades
Message-ID: <992@ultb.UUCP>
Date: 1 Jul 89 02:50:02 GMT
References: <1280@hiatus.dec.com>
Reply-To: clf3678@ultb.isc.rit.edu.UUCP (C.L. Freemesser (709ITP))
Organization: Rochester Institute of Technology, Information Systems
Lines: 24

In article <1280@hiatus.dec.com> chad@norge.dec.com writes:
>
>Hi
>
>I would like to know if replacing one row of 256kb chips (16 chips)
>with one row of 1 megabit chips in a 1040 or 520STFM/upgraded will
>give the magic 2.5 meg RAM on the motherboard.  Is there a problem
>with this?
>
(Rest deleted)

Since the 4 meg upgrade boards sell quite well, it's a bit obvious that
what you want to do cannot be done.  Actually, the 256k chips have
a different pin signals than the 1 meg chips.  I think they might
actually have more pins (the 1 meg chips, that is), but am not sure.

I have an old 520 with the original EZ-Ram board in it.  I do NOT
suggest piggy-backing.  Too messy, hard to remove if you need your
computer serviced, etc.

Chris Freemesser, Rochester Institute of Technology | What I like :
BITNET: %clf3678@RITVAX                             | 1) My Atari ST
USENET: Just reply and hope it gets through         | 2) My '77 Mercury
"Another brilliant mind ruined by higher education" | 3) Coke Classic