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

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#694

From: Clive Kay
Date: Thu, 14 Mar 1996 00:00

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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.
>
>Anyone got an explantion for certain? (my own conjectures are easily read
>from the above!).
Had a similar prob with a 486 motherboard.Couldnt cure it so took it
back as faulty. Replacement was OK. Duff board?
-- 
Clive Kay

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From: Clive Kay <clive@clens.demon.co.uk>
Subject: Re: RAM speed, External Cache & i486-DX266 CPU
Date: 1996/03/14
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