Date: Sun, 30 Mar 1997 22:12:28 -0700 (MST) From: Doug Russell <drussell@saturn-tech.com> To: Paul Southworth <pauls@locust.etext.org> Cc: freebsd-hardware@FreeBSD.ORG Subject: Re: Crashes with 6x86L-P200+ Message-ID: <Pine.BSF.3.95.970330215534.11697A-100000@586quick166.saturn-tech.com> In-Reply-To: <Pine.NEB.3.95.970330211027.17917A-100000@locust.etext.org>
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On Sun, 30 Mar 1997, Paul Southworth wrote: > Yes, another annoying Cyrix owner. I won't ask you why it's not > recognized as a Pentium because I don't care. I bought a 6x86L-P200+ and :) It doesn't really matter right now, although I believe someone just committed new CPU detection routines to -current the other day which will now detect the 6x86 as a 6x86. > a Mustang R534E motherboard with SIS 5571 chipset (yes, it really supports > the 6x86-P200). > > The machine runs fine for an hour or two and then crashes regularly. No > obviously replicable action appears to be crashing it, other than that it > generally crashes as soon as any significant load is incurred (eg, running > glimpseindex, running a dump to tape, compiling libc). The same machine is > currently running an Intel P5-133 with no problems (same everything, no > changes other than motherboard jumper settings for the P5-133). Sounds like the usual problem with those CPUs... Heat. You need to keep them cool, because they generate a *LOT* of heat. I have a *good* (ie. PC Power and Cooling) fan on my 6x86-166 plus another 4" fan pointed at the cpu and regulator heatsink on the M/B. When I say you have to keep them cool...... :) I've started using even beefier heatsink/fan combos now, which keeps them even cooler, although for a UNIX machine I'd recommend an extra fan. Try sticking your finger on the processor heatsink while compiling a kernel or something. (The regulator probably has a BARELY adequate heatsink for the -200 chip... It sucks a LOT of current, which might make the extra fan a really good idea.) Let me know if you are still having problems. The Cyrix chips seem to work just great as long as you can keep them cool. Later...... <Doug>
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