From owner-freebsd-hardware Mon Oct 13 18:05:13 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id SAA08112 for hardware-outgoing; Mon, 13 Oct 1997 18:05:13 -0700 (PDT) (envelope-from owner-freebsd-hardware) Received: from misery.sdf.com (misery.sdf.com [204.244.210.193]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id SAA08100 for ; Mon, 13 Oct 1997 18:05:06 -0700 (PDT) (envelope-from tom@sdf.com) Received: from tom by misery.sdf.com with smtp (Exim 1.71 #1) id 0xKvOw-00049A-00; Mon, 13 Oct 1997 18:03:58 -0700 Date: Mon, 13 Oct 1997 18:03:55 -0700 (PDT) From: Tom To: Bruce Albrecht cc: hardware@freebsd.org Subject: Re: Parity/ECC memory In-Reply-To: <9710132240.AA02103@g0024.seag.fingerhut.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-hardware@freebsd.org X-Loop: FreeBSD.org Precedence: bulk On Mon, 13 Oct 1997, Bruce Albrecht wrote: > I have a Pentium Pro system with the Intel 440FX chipset. If I have 2 > 32M x 36 SIMMs, can I set the chipset to ECC, or can it only be set to > check parity? What type of memory do I have to order if I want to set > it to ECC? I'm having problems with my system claiming there are > memory problems when I turn on ECC (and maybe when I turn on parity > checking as well), and my vendor is claiming that my memory is only > good for straight parity checking. I've looked at the Intel > datasheets, and the only requirements they mention for ECC is x72 > memory and a BIOS which supports it (which I have). ECC should work on such memory (I'm doing it on a PPro system with 8 x 32MB). Make sure it true parity memory. Also, the memory could be bad. Turning parity and/or ecc on could be working! The problem just isn't noticed with ecc/parity off. Also, make sure the SIMMs have 24 or less chips on them. Tom