Date: Sat, 25 Oct 1997 19:32:24 +0000 From: =?iso-8859-1?Q?=DEor=F0ur?= Ivarsson <totii@est.is> To: "Jamil J. Weatherbee" <jamil@trojanhorse.ml.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: Parity Ram Message-ID: <34524948.41C67EA6@est.is> References: <Pine.BSF.3.96.971025115335.173A-100000@trojanhorse.ml.org>
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Jamil J. Weatherbee wrote: > > Can someone fill me in on when you would want to use parity ram as opposed > to non-parity ram these days? If there was some anomaly in memory how > would freebsd handle it (is there a trap for parity error?) As far as I know, the 'parity check fail' is connected to NMI of CPU. In most cases the BIOS rutines accept this and halt the computer with no information on where or why , only something like 'NMI detected, system halted' or 'Memory parity fail - NMI generated , system halted'. The only reason for this might be giving you some warning of failed memory rather than failed software. This has helped me several times when I was suspecting broken memory in the old days (90-93) :-) Thordur Ivarsson
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