From owner-freebsd-amd64@FreeBSD.ORG Sat Feb 5 22:18:11 2005 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 2F3F716A4CE for ; Sat, 5 Feb 2005 22:18:11 +0000 (GMT) Received: from dragon.nuxi.com (trang.nuxi.com [66.93.134.19]) by mx1.FreeBSD.org (Postfix) with ESMTP id B4FFF43D41 for ; Sat, 5 Feb 2005 22:18:10 +0000 (GMT) (envelope-from obrien@NUXI.com) Received: from dragon.nuxi.com (obrien@localhost [127.0.0.1]) by dragon.nuxi.com (8.13.1/8.13.1) with ESMTP id j15MI9mx010200; Sat, 5 Feb 2005 14:18:09 -0800 (PST) (envelope-from obrien@dragon.nuxi.com) Received: (from obrien@localhost) by dragon.nuxi.com (8.13.1/8.13.1/Submit) id j15MI9rM010199; Sat, 5 Feb 2005 14:18:09 -0800 (PST) (envelope-from obrien) Date: Sat, 5 Feb 2005 14:18:08 -0800 From: "David O'Brien" To: Astrodog , freebsd-amd64@freebsd.org Message-ID: <20050205221808.GA9350@dragon.nuxi.com> References: <000001c50a3c$50f2eba0$6800000a@r3140ca> <20050204103708.21608.qmail@web26801.mail.ukl.yahoo.com> <2fd864e05020419382a5e21b3@mail.gmail.com> <42044AAF.1010002@freebsd.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <42044AAF.1010002@freebsd.org> User-Agent: Mutt/1.4.1i X-Operating-System: FreeBSD 6.0-CURRENT Organization: The NUXI BSD Group X-Pgp-Rsa-Fingerprint: B7 4D 3E E9 11 39 5F A3 90 76 5D 69 58 D9 98 7A X-Pgp-Rsa-Keyid: 1024/34F9F9D5 Subject: Re: Intel EMT64 Xeon vs AMD Opteron X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: freebsd-amd64@freebsd.org List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 05 Feb 2005 22:18:11 -0000 [ Please don't cross post! ] On Fri, Feb 04, 2005 at 09:25:19PM -0700, Scott Long wrote: > Astrodog wrote: > >From what I understand, EM64T is essentally an extention to x86, so > >it will understand the AMD64 instructions, much the same way an > >Athlon64 does. Opteron, once again, from what I've read on the topic > >is "Actual" 64-bit, not an emulated version. .. > Both the AMD and Intel offering are just extensions to the ia32 design. > Opteron is no more 'true' 64-bit than Nacona is. Just as the i386 was just extensions to the 80286 design, which was just extensions to the original 8086 design. ;-) And just as the UltraSparc (Sparc v9) is just extensions to the 32-bit Sparc v8. Astrodog, I'm courous, what is the definition of a True 64-bit CPU? -- -- David (obrien@FreeBSD.org)