From owner-freebsd-hackers Tue Sep 24 10: 4: 0 2002 Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.FreeBSD.org (mx1.FreeBSD.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 5F72537B401 for ; Tue, 24 Sep 2002 10:03:59 -0700 (PDT) Received: from avocet.mail.pas.earthlink.net (avocet.mail.pas.earthlink.net [207.217.120.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id 0C02143E42 for ; Tue, 24 Sep 2002 10:03:59 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from pool0304.cvx21-bradley.dialup.earthlink.net ([209.179.193.49] helo=mindspring.com) by avocet.mail.pas.earthlink.net with esmtp (Exim 3.33 #1) id 17tt6I-00036R-00; Tue, 24 Sep 2002 10:03:55 -0700 Message-ID: <3D909AB9.811F2DD8@mindspring.com> Date: Tue, 24 Sep 2002 10:02:49 -0700 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: Danny Braniss Cc: freebsd-hackers@freebsd.org Subject: Re: 3.5GB memory limit? References: Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG 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 > driver? No, not unless the chipset that imposes the limitation permits some form of bank selection. -- Terry To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message