Date: Mon, 8 Apr 1996 10:02:31 -0400 (EDT) From: Michael Newell <mnewell@kaizen.net> To: Michael Smith <msmith@atrad.adelaide.edu.au> Cc: cau@cc.gatech.edu, mc7953@mclink.it, questions@freebsd.org Subject: Re: Asus PVI486SP3 and Adaptec 2940 compatibility Message-ID: <Pine.SGI.3.92.960408095322.7203L-100000@dada.kaizen.net> In-Reply-To: <199604081417.XAA09869@genesis.atrad.adelaide.edu.au>
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On Mon, 8 Apr 1996, Michael Smith wrote: > The P55TP4N has _nothing_ whatsoever to do with the PVI486SP3. One is a > Triton-based Pentium motherboard, the other is a SiS496/497-based > '486 motherboard. Yes, I know that. My point was (a) they may have similar BIOSen (in which case they MAY have something, albeit not much, to do with each other), and (b) it's my [possibly flawed] understanding that some legacy boards DO interfere in situations where you have mixed PCI and ISA busses. ;-) The advice I was giving was "try telling the BIOS about all IRQs in use by ISA boards". Sorry about obfuscating it by mentioning my board type. > Bus termination doesn't help much when the chipset or board implementation > don't correctly handle busmaster DMS 8) But it DOES cause SCSI errors, unterminated file transfers, corrupted data, etc. which is what the originator was complaining about. I've personally experienced cases where a device at the end of a SCSI chain will act up, but the other devices work (most of the time). Or where I've had a terminator with a single bad resistor and REALLY odd things have happened. Whenever I have SCSI problems I always replace the terminators; that way (1) if one is missing I find out REALLY fast, and (2) if I've got a bad terminator it gets fixed. :-)!! Plus BOTH my 2940's work just fine; apparently they have the "good BIOS". Lucky me!! :-)!!
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