From owner-freebsd-current Tue Mar 12 16:20:13 1996 Return-Path: owner-current Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id QAA05683 for current-outgoing; Tue, 12 Mar 1996 16:20:13 -0800 (PST) Received: from burdell.cc.gatech.edu (root@burdell.cc.gatech.edu [130.207.3.207]) by freefall.freebsd.org (8.7.3/8.7.3) with ESMTP id QAA05631 for ; Tue, 12 Mar 1996 16:20:10 -0800 (PST) Received: from oscar.cc.gatech.edu (cau@oscar.cc.gatech.edu [130.207.107.12]) by burdell.cc.gatech.edu (8.7.1/8.6.9) with ESMTP id TAA14043; Tue, 12 Mar 1996 19:18:42 -0500 (EST) Received: (from cau@localhost) by oscar.cc.gatech.edu (8.7.1/8.6.9) id TAA01473; Tue, 12 Mar 1996 19:18:28 -0500 (EST) From: cau@cc.gatech.edu (Carlos Ugarte) Message-Id: <199603130018.TAA01473@oscar.cc.gatech.edu> Subject: Re: AMD doesn't like SNAP! (panic: unwire: page not in pmap) To: rgrimes@GndRsh.aac.dev.com (Rodney W. Grimes) Date: Tue, 12 Mar 1996 19:18:28 -0500 (EST) Cc: jgreco@brasil.moneng.mei.com, jehamby@lightside.com, current@freebsd.org, jkh@time.cdrom.com, toor@dyson.iquest.net In-Reply-To: <199603112125.NAA12878@GndRsh.aac.dev.com> from "Rodney W. Grimes" at Mar 11, 96 01:25:42 pm X-Mailer: ELM [version 2.4 PL24] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-current@freebsd.org X-Loop: FreeBSD.org Precedence: bulk > Such as what, the PVI-486AP4, out of production for 4 months, the only > 486 board that I know ASUS is still makeing is the PVI-486SP3, which > I do not classify as a good board due to only 2 Simm sockets and if I > recall correctly a cache coherency problem in the Sis 496/497 chipset. I can attest to this. I've got a PVI-486SP3, with the SiS 496/497 chipset and a Cyrix 5x86-120 chip. I'm running 2.1.0-RELEASE off of a SCSI drive on an Adaptec 1542CF. As most of you probably know, this is a bus mastering card, and I have run into quite a few problems when running at 120 MHz. However, at 100 MHz everything is ok. There's 16k of write-back L1 cache, and 256k of write-back L2 cache. I have heard from quite a few other folks that they have problems too, particularly with this motherboard, CPU's that use write-back L1 cache, and Adaptec SCSI cards (1542C, 284x, 294x). One person was using a BusLogic card, but he switched to a different BusLogic, and everything was ok. Wish I'd known before I got it (too late now). Carlos -- Carlos A. Ugarte cau@cc.gatech.edu Author of PageMage, a virtual desktop util for OS/2 http://www.cc.gatech.edu/people/home/cau/ Computer Science Senior at Georgia Tech