3.5GB memory limit? (fwd)
Ronald G Minnich
rminnich at lanl.gov
Tue Sep 24 12:57:00 CEST 2002
this is kind of interesting ...
---------- Forwarded message ----------
Date: Tue, 24 Sep 2002 10:02:49 -0700
From: Terry Lambert <tlambert2 at mindspring.com>
To: Danny Braniss <danny at cs.huji.ac.il>
Cc: freebsd-hackers at FreeBSD.ORG
Subject: Re: 3.5GB memory limit?
Danny Braniss wrote:
> the Addendum says:
> * AMD chipset architecture requieres memory above 3.5GB to be reserved
> for PCI devices.
We have a winner.
> Q1: is this AMD specific, or also true for P3/P4?
It's chipset, not CPU specific. Your question is like asking if,
because your Yugo (car) can't go faster than 100 KPH on one brand
of gasoline, if it's a gasoline problem.
> Q2: is there any way of accessing the 'lost' memory? ie some device
No, not unless the chipset that imposes the limitation permits
some form of bank selection.
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