Date: Thu, 18 Sep 1997 12:42:20 +0200 From: Michael Beckmann <beckmann@nacamar.net> To: Tom <tom@sdf.com> Cc: hardware@freebsd.org Subject: Re: Parity trouble with Asus mainboard Message-ID: <3.0.3.32.19970918124220.00b51290@mail.nacamar.de> In-Reply-To: <Pine.BSF.3.95q.970915095851.16907A-100000@misery.sdf.com> References: <3.0.3.32.19970915160712.00b69930@mail.nacamar.de>
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Following up to myself. I got 8 x 32 MB with parity from a different vendor today, and they work fine in the Asus mainboard with ECC on. So something weird apparently is wrong with the other SIMMs, so that they are incompatible with the Asus board. I used these other 8 x 32 MB in a busy newsserver since 3 days now, with parity off, and there was no problem. The same mainboard doesn't like these SIMMs with parity on. Maybe a timing problem with the parity chips on the SIMMs. Thanks, Michael At 09:59 15.09.97 -0700, you wrote: > >On Mon, 15 Sep 1997, Michael Beckmann wrote: > >> Greetings, >> >> I had installed 8 x 32 MB parity SIMMs in an Asus P65UP5 Rev. 2.04 >> mainboard with Pentium Pro card P6ND in it. The system is equipped with one >> PPro 200 CPU. Unfortunately, when I install 4, 6 or 8 of these SIMMs, >> FreeBSD gives me a parity error and panics directly after the copyright >> notice during boot. With 2 x 32 MB, it seems to run OK. >> >> This, however, happens only when I enable ECC in the BIOS. When I disable >> ECC/parity, the system runs fine with 256 MB installed. I made world on the >> latest 2.2-stable in this configuration, no problem. >> >> I also tried the same SIMMs in a Gigabyte 586 HX board, and there I can >> boot and run just fine with ECC enabled in the BIOS (it's an NT system, >> though). >> >> Any ideas ? It doesn't look to me like the SIMMs were faulty. Maybe a >> problem with the parity chips ? I also exchanged the mainboard with another >> one of the same type, but found the same problem. >> >> Michael > > I've installed the the same motherboard in a server with 8 32MB SIMMs, >with ECC turned on. It works very well. > >Tom > > >
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