Re: RAM speed, External Cache & i486-DX266 CPU

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#680

From: David Longley
Date: Fri, 15 Mar 1996 00:00

32 lines
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In article <3148d4ab.3672227@news.demon.co.uk>
           mark@markbz.demon.co.uk "M. Rogers." writes:

> >In article <826745441snz@longley.demon.co.uk>, David Longley
> ><David@longley.demon.co.uk> writes
> >>I have a curious problem which I need a definitive technical solution to.
> >>
> >>Motherboard:  VL (one slot, est ISA)
> >>CPU        :  i486-66DX2
> >>Cache      :  256K
> >>RAM        :  4 x 80ns + 4 x 100ns parity
> >>BIOS       :  AMIBIOS 1991
> >>
> >>Problem..
> >>
> >>Unzipping files produces CRC errors on a number of the contents. The file
> >>checks out OK on other systems, and the problem disappears when I disable
> >>both EXTERNAL CACHE and TURBO CACHE in the BIOS.
> >>
> >>There are a few other odd problems which seem to have gone with the cache
> >>disabled.
> >>
> The ram speed is probably too slow for a 486.  Try some 70ns simms
> (borrow whatever) and see if that cures it.
> 
> 
My mistake - the first four are 70ns.

I tried changing for 4 x 4MB at 70ns, but the cache problem (bad CRCs on unzip)
remained....
-- 
David Longley

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From: David Longley <David@longley.demon.co.uk>
Subject: Re: RAM speed, External Cache & i486-DX266 CPU
Date: 1996/03/15
Message-ID: <826885960snz@longley.demon.co.uk>
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