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Newsgroups: comp.unix.bsd Path: sserve!manuel!munnari.oz.au!uunet!mcsun!sunic!ugle.unit.no!nuug!nntp.uio.no!bootes.sds.no!toreh From: toreh@bootes.sds.no (Tore Haraldsen) Subject: Re: 386BSD & AHA1542B & CDC94171-9 Disk problem Message-ID: <1992Jul20.011747.10954@ulrik.uio.no> Sender: news@ulrik.uio.no (Mr News) Nntp-Posting-Host: 192.68.77.217 Reply-To: tha@ulrik.uio.no Organization: Statens Datasentral A/S, SDS, Norway References: <1992Jul19.121003.27453@ulrik.uio.no> <14ca62INNhfr@agate.berkeley.edu> Date: Mon, 20 Jul 1992 01:17:47 GMT Lines: 40 In article <14ca62INNhfr@agate.berkeley.edu> wjolitz@soda.berkeley.edu (William F. Jolitz) writes: >In article <1992Jul19.121003.27453@ulrik.uio.no> tha@ulrik.uio.no writes: >> ... >> changing root device to fd0a >> 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 >> 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 randomly fail. > >According to my Adaptec manual,this is an invalid CCB operation Code, >which indicates that the DMA of the CCB failed. So it's got to be a config >problem of some kind... > >Bill I ran the DMA tests for several hours, with no failing. I then checked all jumpers on the card, but everything is set to default as of the spec I got. I also reinstalled the j9:4 jumper (disable autosense) with no results. My Adaptec bios is 3.07, scsicntrl reports Firmware rev. 06. Do I need a bios upgrade (don't answer 'yes' if you don't know)? 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. Is it possible to discuss these problems with your SCSI guru, or is he <<off limits>>? I badly wish to get the machine working, but indluging in wishful thinking never got anybody anywhere in this world... -- Tore Haraldsen