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Date:      Fri, 12 Jan 2001 16:10:44 +0000
From:      David Malone <dwmalone@maths.tcd.ie>
To:        Michael Bretterklieber <mbretter@inode.at>
Cc:        stable@FreeBSD.org
Subject:   Re: Athlon Thunderbird 700 w. Asus K7M Motherboard vs. FreeBSD 4.2
Message-ID:  <20010112161044.A97484@walton.maths.tcd.ie>
In-Reply-To: <3A5F1F43.EE70CB3C@inode.at>; from mbretter@inode.at on Fri, Jan 12, 2001 at 04:14:11PM %2B0100
References:  <3A5F1F43.EE70CB3C@inode.at>

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On Fri, Jan 12, 2001 at 04:14:11PM +0100, Michael Bretterklieber wrote:

>  I have problems with my Athlon Thunderbird 700 on an Asus K7M
> Motherboard
>  (Bios 1009) and FreeBSD 4.2.
>  The system is very very slow, like on an old 386. I have this problems
>  since I updatet from an Athlon 500 to this Athlon Thunderbird 700. I
>  have on the same Harddisk Win98 and Win2K and they work without
>  problems, fast and stable.
>  This situation is disastrous for me, because I had to work under
>  FreeBSD, so I hope, that somebody can help.

I wonder if it could be a problem with the BIOS not setting up the
MTRR registers correctly. I have seen problems (on SMP machines)
where the BIOS was not setting up the MTRR registers on some of
the CPUs weren't caching any of memory. FreeBSD has a work around
for this in the SMP case, but maybe not in the single processor
case.

I'd try looking for a BIOS upgrade, as it may be a problem with
the old BIOS not initialising the new processor.

	David.


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