From owner-freebsd-hackers Sat Feb 10 08:45:44 1996 Return-Path: owner-hackers Received: (from root@localhost) by freefall.freebsd.org (8.7.3/8.7.3) id IAA00262 for hackers-outgoing; Sat, 10 Feb 1996 08:45:44 -0800 (PST) Received: from covina.lightside.com (covina.lightside.com [198.81.209.1]) by freefall.freebsd.org (8.7.3/8.7.3) with SMTP id IAA00256 Sat, 10 Feb 1996 08:45:42 -0800 (PST) Received: from hamby1.lightside.net by covina.lightside.com with smtp (Smail3.1.28.1 #6) id m0tlIQB-0009XXC; Sat, 10 Feb 96 08:45 PST Received: by hamby1.lightside.net with Microsoft Mail id <01BAF794.47508630@hamby1.lightside.net>; Sat, 10 Feb 1996 08:46:32 -0800 Message-ID: <01BAF794.47508630@hamby1.lightside.net> From: Jake Hamby To: Luis Verissimo , "'David Kirchner'" Cc: "Freeman P. Pascal IV" , FreeBSD Hackers list , "questions@freebsd.org" Subject: RE: Unexplained segfaults in 2.1.0-RELEASE Date: Sat, 10 Feb 1996 08:37:08 -0800 MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Sender: owner-hackers@freebsd.org Precedence: bulk ---------- From: David Kirchner Sent: Friday, February 09, 1996 10:47 PM To: Luis Verissimo Cc: Freeman P. Pascal IV; FreeBSD Hackers list; questions@freebsd.org Subject: Re: Unexplained segfaults in 2.1.0-RELEASE On Fri, 9 Feb 1996, Luis Verissimo wrote: > I have a 486DX4-100 machine running FreeBSD-2.1R. I experienced the = same=20 > problems. I had to disable both the internal and external caches, of = my=20 > machine. It then worked find. >=20 > I have another 486DX2-66 older machine, that keeps getting those = signals,=20 > even with both caches disabled.=20 That problem happened to me as well, those wouldn't happen to be AMD=20 CPU's would they? Mine is a 486DX4-120 and I didn't only get segfaults, = I=20 got drive errors. AMD suggests in the FAQ it's due to people = overclocking=20 their CPUs, but I haven't done that personally. They also say if you put = the clock back to normal, it'll work again. I'm Cc:'ing this to questions and hackers, feel free to change the=20 Cc list if you want. =3D) -- David Kirchner -- dpk@eskimo.com I have an AMD DX4-100 and haven't had any trouble with it. Curiously, I = put together an AMD DX4-120 PCI system for my Internet provider, and we = couldn't get it to boot FreeBSD (or even DOS reliably!) it would = complain of CRC errors when un-gzipping the boot floppy kernel. We = figured it was cheap underspec RAM we had bought (do you need 60ns for a = DX4-120?) so we clocked it down to 100MHz and it has worked perfectly = ever since! YMMV of course... ---Jake