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From: newton@cleese.apana.org.au (Mark Newton)
Newsgroups: comp.os.386bsd.questions
Subject: Microcode bug in AHA1542C?
Date: 2 Jul 1993 22:50:42 +0930
Organization: cleese.apana.org.au public access UNIX
Lines: 50
Distribution: world
Message-ID: <211cnr$gpp@cleese.apana.org.au>
NNTP-Posting-Host: cleese.apana.org.au
I've recently bought an Adaptec 1542C so that I'd have something to plug
my 170Mb SCSI disk into. Things are not going smoothly, however.
Writing to the SCSI disk causes hundreds of errors (including "partially
allocated inode", "incorrect block count", "unknown file type", and
many more) next time fsck runs over its filesystems.
Rodney Grimes mentioned a microcode bug in some 1542C's that causes data
corruption under UNIX and suggested that I call Adaptec tech support about
it. That's lead absolutely nowhere -- The closest thing that Australia
has to Adaptec tech support is Tech Pacific, and they haven't the faintest
idea about the problem is.
[ termination seems to be ok - the resistor block is installed in the
disk, and the internal termination is enabled on the controller. The
SCSI cable is about 1 foot long, which would tend to rule out the
cable length as a cause (referring to some bug reports from a few weeks
ago) ]
The bug has been seen with Julian's SCSI drivers from the 0.2.4 patchkit,
AND the original as0 SCSI driver that comes with 386BSD 0.1, so I can
also rule out the device driver.
The disk worked fine on the old Amiga too, so it isn't Quantum's fault.
Hardware configuration, in case it's significant (and I don't think it
is):
Intel 486DX/33 + VLbus, AMI BIOS
IDE hard disk controller + FDC
Adaptec 1542C (FDC disabled)
Connor 240Mb IDE hard disk
Quantum ELS170S hard disk
16Mb RAM
Any ideas? Trekking off to my dealer to get a 1542B is going to be
a real pain in the butt, so I'd prefer to avoid that. If anyone can
offer any suggestions (especially names of "the right people to call"
for Adaptec support in .au) I'd be most appreciative.
Thanks.
- mark
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I tried an internal modem, newton@cleese.apana.org.au
but it hurt when I walked. Mark Newton
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