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From: Michael Smith <msmith@atrad.adelaide.edu.au>
Message-Id: <199506280401.NAA19540@genesis.atrad.adelaide.edu.au>
Subject: Re: 486DX2 FreeBSD boot.flp problems (fwd)
To: svanrafe@explorer.csc.com (Stefan Vanrafelghem)
Date: Wed, 28 Jun 1995 13:31:24 +0930 (CST)
Cc: freebsd-questions@FreeBSD.ORG
In-Reply-To: <Pine.SUN.3.91.950627145736.20942A-100000@explorer.csc.com> from "Stefan Vanrafelghem" at Jun 27, 95 03:01:59 pm
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Stefan Vanrafelghem stands accused of saying:
> I checked, and indeed the Future Domain controller does not have "Bus master"
> capability...
>
> I would rather not fork out another couple hundred dollars on
> a new controller... Can anyone tell me for sure if FreeBSD requires
> Bus master... or if there is some other work around/patch.
FreeBSD does not _require_ a busmastering SCSI controller, however
the alternative (PIO controllers) perform extremely badly in
multiprocessing environments. The FD controller _may_ be supported
by the sea0 driver; others have reported success with some combinations.
Given that you have all of your disk on the SCSI bus, a decent SCSI controller
will pay for itself in no time flat. If you have VLB, the Adaptec 2842
is probably the best price/performance point, if you only have ISA,
the Adaptec 1542CF will fit your bill, as Ted pointed out.
> Stefan J. Van Rafelghem
--
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