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Path: sserve!manuel!munnari.oz.au!spool.mu.edu!agate!ames!sgi!rigden.wpd.sgi.com!rpw3 From: rpw3@rigden.wpd.sgi.com (Rob Warnock) Newsgroups: comp.unix.bsd Subject: Re: 386BSD & AHA1542B & CDC94171-9 Disk problem Message-ID: <ninhuvo@sgi.sgi.com> Date: 21 Jul 92 11:33:17 GMT Article-I.D.: sgi.ninhuvo Sender: rpw3@rigden.wpd.sgi.com Organization: Silicon Graphics, Inc. Mountain View, CA Lines: 40 tha@ulrik.uio.no writes: +--------------- | wjolitz@soda.berkeley.edu (William F. Jolitz) writes: | >tha@ulrik.uio.no writes: | >> as0b: controller error 0x16 reading fsbn 0 | >> scsi sense: 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 | > | >This looks like the problem Rob Warnock had with the Adaptec. Try running | >the diagnostic program's that just exercise DMA without a disk. If it | >randomly fails, that's it. Rob found that when he "dumbed down" the config | >by adding wait states to memory, then the SCSI controller would fail. | | I ran the DMA tests for several hours, with no failing. +--------------- Then it's not the problem I was having. Sorry, then I don't know what it is. +--------------- | I don't know what you mean by '"dumbed down" the config by adding wait | states to memory'. There is no extra firmware in this 386. And no way to | adjust wait states etc. The machine is a plain 25Mhz 386 with no fancy | rom or setups except facilities for setting disk types, shadowing and | CPU speed. All shadowing is off, CPU speed set to normal. +--------------- Well, on my 486, the CMOS RAM setup allows to to set "memory timing" to "slow" or "fast", and a bunch of other stuff. WHen I was trying to get "0.0newer" to run, I set all the CMOS RAM setups to the slowest, "most conservative" values, and created a problem for myself with the Adaptec... ;-} But again, it sounds like your problem is different. -Rob ----- Rob Warnock, MS-9U/510 rpw3@sgi.com Silicon Graphics, Inc. (415)390-1673 2011 N. Shoreline Blvd. Mountain View, CA 94043