*BSD News Article 2166


Return to BSD News archive

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