From owner-freebsd-amd64@FreeBSD.ORG Thu Jan 29 14:21:00 2004 Return-Path: Delivered-To: freebsd-amd64@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id E99B416A4CE; Thu, 29 Jan 2004 14:21:00 -0800 (PST) Received: from tor-adm1.nbc.attcanada.ca (tor-adm1.business.allstream.net [207.181.89.5]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8EE1A43D58; Thu, 29 Jan 2004 14:20:59 -0800 (PST) (envelope-from taob@risc.org) Received: from tor-adm1.nbc.attcanada.ca (localhost [127.0.0.1]) i0TMKmwH014804; Thu, 29 Jan 2004 17:20:48 -0500 (EST) Received: from localhost (ncc0070@localhost)i0TMKlMP014801; Thu, 29 Jan 2004 17:20:47 -0500 (EST) X-Authentication-Warning: tor-adm1.nbc.attcanada.ca: ncc0070 owned process doing -bs Date: Thu, 29 Jan 2004 17:20:47 -0500 (EST) From: Brian Tao X-Sender: ncc0070@tor-adm1.nbc.attcanada.ca To: "David O'Brien" In-Reply-To: <20040129185426.GA93242@dragon.nuxi.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII cc: freebsd-amd64@freebsd.org Subject: Re: New AMD64 owner X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 29 Jan 2004 22:21:01 -0000 On Thu, 29 Jan 2004, David O'Brien wrote: > > It is a CPU mode issue. If you think back to your brand new i386 > and Windows 95, the CPU was switched back into real mode when you > ran a MS-Windows 3.1 program. Along with MS-Windows 95 doing > "Thunking" for system services. Ah, gotcha... I had not thought about the parallels between this and the 16-to-32 transition. Cool, things make a lot more sense when I think about it that way. > Yes -- assuming you are talking about dual-booting. My FreeBSD/i386 > build machine is actually an Athlon64 machine that is run purely and > only in 32-bit mode. Athlon64 is the fastest 32-bit x86 machine in > the world today. Damn right. :) -- Brian Tao (BT300, taob@risc.org) "Though this be madness, yet there is method in't"