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Date: Thu, 09 Jan 1997 10:55:25 +0200
From: Nadav Eiron <nadav@barcode.co.il>
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To: Shawn Ramsey <shawn@computerstopusa.com>
CC: "Michael A. Dorin" <mad@theoden.adc.com>, questions@freebsd.org
Subject: Re: mix EDO and Non EDO memory?
References: <Pine.BSF.3.95.970108153522.1268D-100000@luke.cpl.net>
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Shawn Ramsey wrote:
> 
> > Can I mix EDO and Non-EDO memory in seprate banks and
> > still get the benifit of the EDO memory?
> 
> Well, with 60 & 70NS in different banks, all RAM runs at the slowest
> memory you have. I would guess that its the same for EDO/NON-EDO as well.

It depends on your chipset. My DEC VenturisFX manuals claim that you can
mix EDO and FPDRAM, and even not have them in pairs (i.e. have a bank
that's only 32-bit wide) and will do the best possible on each access. I
never tried it (with current memory prices, I don't care much) and
neither have I seen such a claim on other motherboards.

Nadav