From owner-freebsd-amd64@FreeBSD.ORG Wed Jul 13 19:38:55 2005 Return-Path: X-Original-To: freebsd-amd64@freebsd.org 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 C85ED16A41C; Wed, 13 Jul 2005 19:38:55 +0000 (GMT) (envelope-from peter@wemm.org) Received: from canning.wemm.org (canning.wemm.org [192.203.228.65]) by mx1.FreeBSD.org (Postfix) with ESMTP id 53CB743D46; Wed, 13 Jul 2005 19:38:55 +0000 (GMT) (envelope-from peter@wemm.org) Received: from fw.wemm.org (canning.wemm.org [192.203.228.65]) by canning.wemm.org (Postfix) with ESMTP id 2C1A82A8F9; Wed, 13 Jul 2005 12:38:55 -0700 (PDT) (envelope-from peter@wemm.org) Received: from overcee.wemm.org (overcee.wemm.org [10.0.0.3]) by fw.wemm.org (Postfix) with ESMTP id CE24AE2B3; Wed, 13 Jul 2005 12:38:54 -0700 (PDT) (envelope-from peter@wemm.org) Received: from overcee.wemm.org (localhost [127.0.0.1]) by overcee.wemm.org (8.13.4/8.13.1) with ESMTP id j6DJcrQ6047477; Wed, 13 Jul 2005 12:38:53 -0700 (PDT) (envelope-from peter@wemm.org) Received: from localhost (localhost [[UNIX: localhost]]) by overcee.wemm.org (8.13.4/8.13.1/Submit) id j6DJcrHU047476; Wed, 13 Jul 2005 12:38:53 -0700 (PDT) (envelope-from peter@wemm.org) X-Authentication-Warning: overcee.wemm.org: peter set sender to peter@wemm.org using -f From: Peter Wemm To: freebsd-amd64@freebsd.org Date: Wed, 13 Jul 2005 12:38:52 -0700 User-Agent: KMail/1.8.1 References: <200506290818.j5T8IELL002348@peedub.jennejohn.org> <1d6d20bc050701065367a01e8b@mail.gmail.com> <42C56EE5.3010608@speakeasy.net> In-Reply-To: <42C56EE5.3010608@speakeasy.net> MIME-Version: 1.0 Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200507131238.52953.peter@wemm.org> Cc: Guy Dawson , freebsd-hardware@freebsd.org Subject: Re: AMD64 X2 X-BeenThere: freebsd-amd64@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Porting FreeBSD to the AMD64 platform List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 13 Jul 2005 19:38:55 -0000 On Friday 01 July 2005 09:27 am, JM wrote: > Jia-Shiun Li wrote: > >On 7/1/05, Guy Dawson wrote: > >>David O'Brien wrote: > >>>It really should be that simple. All the external interfaces and > >>> pins are the same for Athlon64-939 and Athlon64 X2. They have > >>> the same thermal specifications, etc... > >> > >>It's the only way AMD could reasonably do it. To require a > >> different motherboard for X1 (?) and X2 chips would have the mobo > >> makers rioting! > > > >That's what Intel did. Requiring a new i945/i955-based board for > > their rushed dual-core CPUs. Only use the same socket but varied > > pin definition. If you put the new CPU on an i915 board, it will > > shutdown automatically to 'protect'. In contrast Athlon64 claimed > > to be designed with dual-core capability in mind from the > > beginning. > > > >Jia-Shiun. > >_______________________________________________ > >freebsd-hardware@freebsd.org mailing list > >http://lists.freebsd.org/mailman/listinfo/freebsd-hardware > >To unsubscribe, send any mail to > > "freebsd-hardware-unsubscribe@freebsd.org" > > first of all, Intel claims to have had the original idea of dual core > which any educated hardware expert knows to be false. AMD touted > support for multiple cores months ahead of intel and it's apparent by > the hyper transport technology white paper that AMD was planning this > route when the Athlon XP was released long ago. Intel only recently > scrapped their processor roadmap. rather than attempt to hit the > 4GHz mark they re-wrote the roadmap, fabbed up a quick and dirty dual > core solution and released it before AMD claiming that the idea was > theirs... i hate that company... Also, if you look at the original silicon specs, including the bios/kernel writers guide from the late 2001/early 2002 era, you'll see bit and register definitions for 'core 0' and 'core 1' on the sledgehammer^H^H^H^H^H^H^H^Hopteron/athlon64 docs. -- Peter Wemm - peter@wemm.org; peter@FreeBSD.org; peter@yahoo-inc.com "All of this is for nothing if we don't go to the stars" - JMS/B5