Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!samsung!shadooby!oxtrap!oxtrap!time
From: time@oxtrap.oxtrap.UUCP (Tim Endres)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Sharing the SCSI bus?
Message-ID: <TIME.89Nov28151630@oxtrap.oxtrap.UUCP>
Date: 28 Nov 89 20:16:30 GMT
References: <1240@key.COM> <602@telesoft.com>
	<TIME.89Nov27140427@oxtrap.oxtrap.UUCP>
	<1989Nov28.041855.290@Neon.Stanford.EDU>
Sender: time@oxtrap.aa.ox.com (Tim Endres)
Reply-To: time@oxtrap.UUCP
Organization: Oxtrap - Ann Arbor, MI
Lines: 13
In-Reply-To: kaufman@Neon.Stanford.EDU's message of 28 Nov 89 04:18:55 GMT

In article <1989Nov28.041855.290@Neon.Stanford.EDU> kaufman@Neon.Stanford.EDU (Marc T. Kaufman) writes:

   The problem is not that SCSISelect will or will not fail, it is that SCSISelect
   does not go through the bus arbitration phase required for multi-master SCSI
   implementation.  It is possible for SCSISelect to succeed when, in fact, it
   has no right to the bus.  It may work, most of the time, but I would not want
   to count on it.

   Marc Kaufman (kaufman@Neon.stanford.edu)
Marc,
Thanks for clarifying the problem. I was unaware that SCSISelect() did
not arbitrate. Poor choice on Apple's part. Do you know if they ever
intend to repair this, or is it a "feature".