Date: Tue, 2 Apr 2002 18:32:20 +0200 From: Bernd Walter <ticso@cicely8.cicely.de> To: Christian Weisgerber <naddy@mips.inka.de> Cc: freebsd-alpha@FreeBSD.ORG Subject: Re: Source of "processor correctable error"? Message-ID: <20020402163220.GO41357@cicely8.cicely.de> In-Reply-To: <a8chg1$11e$1@kemoauc.mips.inka.de> References: <a89rrl$2vek$1@kemoauc.mips.inka.de> <20020401152244.GE41357@cicely8.cicely.de> <a8chg1$11e$1@kemoauc.mips.inka.de>
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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. There are some possible differences with refresh organisation, but this doesn't seem to matter on a PC164. I'm running myself 3 different vendors mixed. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-alpha" in the body of the message
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