From owner-freebsd-chat@FreeBSD.ORG Fri Apr 6 18:54:18 2007 Return-Path: X-Original-To: freebsd-chat@freebsd.org Delivered-To: freebsd-chat@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id D270E16A401 for ; Fri, 6 Apr 2007 18:54:18 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (tim.des.no [194.63.250.121]) by mx1.freebsd.org (Postfix) with ESMTP id 9428713C48A for ; Fri, 6 Apr 2007 18:54:18 +0000 (UTC) (envelope-from des@des.no) Received: from tim.des.no (localhost [127.0.0.1]) by spam.des.no (Postfix) with ESMTP id 8A62720A1; Fri, 6 Apr 2007 20:54:14 +0200 (CEST) X-Spam-Tests: AWL X-Spam-Learn: disabled X-Spam-Score: 0.0/3.0 X-Spam-Checker-Version: SpamAssassin 3.1.7 (2006-10-05) on tim.des.no Received: from dwp.des.no (des.no [80.203.243.180]) by smtp.des.no (Postfix) with ESMTP id 79CCE2094; Fri, 6 Apr 2007 20:54:14 +0200 (CEST) Received: by dwp.des.no (Postfix, from userid 1001) id 6ADD2A10A5; Fri, 6 Apr 2007 20:54:14 +0200 (CEST) From: des@des.no (Dag-Erling =?iso-8859-1?Q?Sm=F8rgrav?=) To: Darren Pilgrim References: <200704051719.l35HJ2ZW018555@lurza.secnetix.de> <461584D4.4010606@gmail.com> <46158675.8060205@evilphi.com> <86fy7doos1.fsf@dwp.des.no> <4616877D.7020205@evilphi.com> Date: Fri, 06 Apr 2007 20:54:14 +0200 In-Reply-To: <4616877D.7020205@evilphi.com> (Darren Pilgrim's message of "Fri, 06 Apr 2007 10:46:37 -0700") Message-ID: <8664899vvt.fsf@dwp.des.no> User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.3 (berkeley-unix) MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Cc: freebsd-chat@freebsd.org Subject: Re: what can i do with a 486? X-BeenThere: freebsd-chat@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Non technical items related to the community List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 06 Apr 2007 18:54:18 -0000 Darren Pilgrim writes: > Dag-Erling Sm=F8rgrav wrote: > > Darren Pilgrim writes: > > > Well for one you should probably not try to boot an i686 kernel > > > on a 486.... > > It's not an i686 kernel. It's an i486 kernel with code to > > recognize and support i586 and i686 CPUs. > Technically it's neither. It's an i386 kernel with support for > 486-, 586- and 686-class CPUs. No. It won't run on an i386. Atomic operations are ridiculously inefficient on the i386 (no cmpxchg), so we don't use i386-compatible code unless I386_CPU was specified. DES --=20 Dag-Erling Sm=F8rgrav - des@des.no