Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!uunet!zephyr.ens.tek.com!orca.wv.tek.com!pogo!daveb
From: daveb@pogo.WV.TEK.COM (Dave Butler)
Newsgroups: comp.sys.mac.hardware
Subject: Re: Sharing the SCSI bus?
Message-ID: <8252@pogo.WV.TEK.COM>
Date: 5 Dec 89 01:06:32 GMT
References: <1989Nov29.030959.27969@Neon.Stanford.EDU>
Reply-To: daveb@pogo.WV.TEK.COM (Dave Butler)
Distribution: na
Organization: Tektronix, Inc., Wilsonville,  OR.
Lines: 20

I'm finding this discussion of Apple SCSI quite interesting.  I've been trying
to determine the differences between Apple SCSI and ANSI SCSI.  So far, I've
been told that Apple SCSI doesn't use the ATN line.  Is this true, and if so,
how does the initiator send messages? Also the book "Inside Macintosh Vol IV"
states on page 286 that Mac implements both arbitration and disconnect /
reselection; I find it disturbing to find out that this is not so.  Could
anyone please tell me the specific differences between Apple and ANSI SCSI, as
well as any other "gotchas" (like not implementing arbitration, when the
documentation says otherwise)?  

I'd appreciate any input. Thanks in advance.

				Later,

				Dave Butler

    Remember: Silly is a state of Mind, Stupid is a way of Life.

    PS. If there is an actual document with this information, I'd love to
    know its name, and how to get it.