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Date:      Tue, 19 Nov 2002 23:21:07 +0100
From:      Wilko Bulte <wkb@freebie.xs4all.nl>
To:        Sten <sten@blinkenlights.nl>
Cc:        freebsd-alpha@FreeBSD.ORG
Subject:   Re: Alphastation 500
Message-ID:  <20021119232107.A350@freebie.xs4all.nl>
In-Reply-To: <Pine.GSO.4.44-Blink.0211192238200.4198-100000@thea.blinkenlights.nl>; from sten@blinkenlights.nl on Tue, Nov 19, 2002 at 10:44:47PM %2B0100
References:  <Pine.GSO.4.44-Blink.0211192238200.4198-100000@thea.blinkenlights.nl>

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On Tue, Nov 19, 2002 at 10:44:47PM +0100, Sten wrote:
> 
> Just wondering if someone could update the fbsd alpha
> hardware guide to reflect the fact that the alphastation
> 500 does NOT use regular ecc sdram dimms, ( this
> one just caught me big time ).

It does. It does not use SDRAM DIMMs if that is what you mean.
But EDO/FP based DIMMs are also an industry standard.

> My current guess is that it uses 5v edo/fp dimms.
> ( based on the difference in the notches, and the
> fact that 5v only exists for fp/edo ).

I just checked the User Information manual and that says
you need sets of 4 DIMMs.

> Though no-one really seems to know :(.
> 
> If someone knows the memory type then I'd like
> to know because it would save me loads of time
> chasing down the original stuff.

Well, they definitely use buffered DIMMs, I have some sitting
here on my desk (my AS500 was borrowed by a friend).

In case you want to research if they are EDO or FPM, the chips on the
DIMMs are SEC KM44C4000AS-6

Given that the AS600 uses FPM (to the best of my knowledge) I guess 
AS500 has FPM as well (but I could be wrong).

W/
-- 
|   / o / /_  _   				wilko@FreeBSD.org
|/|/ / / /(  (_)  Bulte				Arnhem, the Netherlands

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