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From: draper@buster.cps.msu.edu (Patrick J Draper)
Newsgroups: comp.sys.ibm.pc.misc
Subject: Re: 286/16 with DRAM woes.  Help, please.
Message-ID: <1990Oct27.202958.24615@msuinfo.cl.msu.edu>
Date: 27 Oct 90 20:29:58 GMT
References: <40688@shemp.CS.UCLA.EDU>
Sender: news@msuinfo.cl.msu.edu
Reply-To: draper@buster.cps.msu.edu (Patrick J Draper)
Organization: Dept. of Computer Science, Michigan State University
Lines: 27

In article <40688@shemp.CS.UCLA.EDU> loving@lanai.cs.ucla.edu (Mike Loving) writes:
>I have a 16mhz 286 machine which had 8 empty 256kx4 DRAM sockets (and
>some 256kx1's for parity).  The rather thin manual on the mother board
>said that to expand the RAM one just stuffs chips in there (that's the
>way nearly every machine I've worked with recently works).  No switches,
>no jumpers no nothing.
>
>Well after buying 8 new chips (faster than the old ones) and putting them
>in, the system boots but does not find the ram.  I exchanged the new chips

Well what a coincidence.

I happened to upgrade my 386SX to 4MB a couple of days ago and had the
same problem with the same BIOS.

Install your memory as the manual says. Hold down the insert key as you
flip the power switch and wait for the thing to boot before you release
it.

That should clear the CMOS memory - not the disk setup stuff, but the
internal tables that the bios uses to determine what hardware it's
running on. You might need to run your setup program to get rid of a
checksum error, but that's normal after clearing CMOS.

Good luck,

Patrick Draper  -----   Michigan State University