Date: Tue, 2 Apr 2002 19:24:25 +0200 From: Wilko Bulte <wkb@freebie.xs4all.nl> To: Bernd Walter <ticso@cicely8.cicely.de> Cc: Christian Weisgerber <naddy@mips.inka.de>, freebsd-alpha@FreeBSD.ORG Subject: Re: Source of "processor correctable error"? Message-ID: <20020402192425.B43540@freebie.xs4all.nl> In-Reply-To: <20020402163220.GO41357@cicely8.cicely.de>; from ticso@cicely8.cicely.de on Tue, Apr 02, 2002 at 06:32:20PM %2B0200 References: <a89rrl$2vek$1@kemoauc.mips.inka.de> <20020401152244.GE41357@cicely8.cicely.de> <a8chg1$11e$1@kemoauc.mips.inka.de> <20020402163220.GO41357@cicely8.cicely.de>
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On Tue, Apr 02, 2002 at 06:32:20PM +0200, Bernd Walter wrote: > On Tue, Apr 02, 2002 at 03:07:45PM +0000, Christian Weisgerber wrote: > > Bernd Walter <ticso@cicely8.cicely.de> wrote: > > > > > > Warning: received processor correctable error. > > > These are most likely main memory errors. > > > > Indeed one of the SIMMs is bad. Annoyingly this halves the amount > > of memory and the memory bus width in the box. > > > > What are my chances of replacing the faulty SIMM? Can I just > > substitute any other 72-pin FP-DRAM 8Mx36 (32MB ECC) 60ns SIMM, or > > are all modules required to be exactly alike? SIMMs of this general > > type are still available at somewhat unreasonable prices I guess, > > but finding one that shares exactly the same organization and God > > knows what parameters seems unlikely. > > > > (The SIMMs in place are physically double-sided, with a total of > > 24 Siemens HYB514100BJ-60 chips from 1997. There's some sort of > > warranty label, but I can't identify the vendor.) > > Generaly speaking they have to be the same because the are all > addressed in a single bank and so claims the documentation. > But practical speaking you could try a random vendor 24 chip simm > with a very good success chance. > I wouldn't try to mix with a 18 chip simm. > Theoreticaly even edo should work, but you don't get a speed gain > and they are rare. Are you absolutely sure? I don't think we ever used EDO *SIMMs* on Alpha machines. There are some boxes using EDO *DIMMs* (like the AS500 sitting next to me) -- | / o / /_ _ wilko@FreeBSD.org |/|/ / / /( (_) Bulte Arnhem, the Netherlands We are FreeBSD. Resistance is futile. Prepare to be committed. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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