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Date:      Sun, 21 May 1995 11:47:44 -0700
From:      Sean Eric Fagan <sef@kithrup.com>
To:        bde@zeta.org.au, davidg@Root.COM, freebsd-bugs@FreeBSD.org, tege@cygnus.com
Subject:   Re: MAJOR problem with FreeBSD-2.0-RELEASE
Message-ID:  <199505211847.LAA13914@kithrup.com>

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>There have been several reports that bounce buffering is broken.  The bt
>driver always enables bounce buffering, although this at best wastes time
>on non-ISA systems.

Some more information:

the system has a Quantum 4.1GByte drive on it (one of the Grand Prix,
supposedly, although it apparantly identifies itself as a slightly different
model).

I just tried running a kernel without bounce buffers, without an ed0 driver,
and with MAXMEM set to 16384.  I booted, and then tried to build bash by

	cd /usr/src/local/bash*
	make

It first gave a warning/error message from the buslogic driver, saying
something about there being more than 33 mbxs (I think it was); there was
then a message from the scsi code saying "oops" something wasn't queued.
The system then got a kernel page fault, and paniced.

Before that, with slightly different kernels, I'd noticed that

	cd /sys/i386/conf
	vi TEGE

would get the buslogic warnings/errors, and vi would come up with an empty
file, or core dump.  If, however, I did

	vi
	:e TEGE

it would work.

I think he is going to install Linux.  This is the second motherboard he's
been unsuccessful in running FreeBSD-2.0 on.

Sean.



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