Return to BSD News archive
Newsgroups: comp.unix.bsd
Path: sserve!manuel!munnari.oz.au!spool.mu.edu!darwin.sura.net!Sirius.dfn.de!chx400!bernina!torda
From: torda@igc.ethz.ch (Andrew Torda)
Subject: Re: Fixed: Runs at 8MHz, Crashes at 33MHz, 386bsd
Message-ID: <1992Sep12.151654.7421@bernina.ethz.ch>
Sender: news@bernina.ethz.ch (USENET News System)
Organization: Computational Chemistry, ETH, Zuerich
References: <1992Sep8.070731.21159@bernina.ethz.ch> <1992Sep11.200736.20247@qualcomm.com> <1992Sep11.222258.2144@fcom.cc.utah.edu>
Date: Sat, 12 Sep 1992 15:16:54 GMT
Lines: 35
In article <1992Sep11.222258.2144@fcom.cc.utah.edu> terry@cs.weber.edu (A Wizard of Earth C) writes:
[...]
>>> At 8 MHz, my machine appears perfectly stable.
>>> At 33 MHz, I get repeated trap type 12 panics.
[... replacing 80 ns simms with 70 fixing the problem ..]
[... aha1542b gets blamed ...]
>Test: Anyone have a non-SCSI system that has the "works OK at 8MHz but
>not at 33MHz" problem? I realize this isn't a definitive test, as I
>might get responses from someone running 200ns RAM saying "Yeah; funny...
>no one else seems to have the problem", but it should give a weight of
>SCSI-with-problem vs. not-SCSI-with-problem.
Yes, have a look at the original post in this thread (from me).
Definitely no SCSI controller here. From my original posting
Machine details:
386 clone (Blackship), no maths chip, 8M memory
ATI motherboard (ATI-386/B2-33, 64K cache)
AMI BIOS (04/09/90)
video: ET4000 based, DFI VG-5000 with 1 Mb
pc0 <color> at 0x60 irq1 on isa
com1 at 0x3f8 irq4 on isa
com2 at 0x2f8 irq3 on isa
wd0 (MAXTOR LXT-213A> at 0x1f0 irq 14 on isa
fd0 drives 0:1.2M, 1: 1.44M at 0x3f0 irq 6 drq2 on isa
That maxtor number is a non-scsi model. It's an IDE.
The actual controller is some anonymous card called a 'CCAT200A'.
There is some western digital chip on the controller.
This was also the machine which ran SCO unix at full speed with no
problems.
I think the issue remains unresolved, although some of the mail and
speculation I got was amusing.
-Andrew
--
Andrew Torda, Computational Chemistry, ETH, Zurich, torda@igc.ethz.ch