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From: das@Apple.COM (David Shayer)
Newsgroups: comp.sys.mac.programmer,comp.sys.mac.hardware,comp.sys.mac.system
Subject: Re: SCSI Reselection Problem
Keywords: SCSI
Message-ID: <45787@apple.Apple.COM>
Date: 18 Oct 90 20:37:13 GMT
References: <1990Oct17.143151.5125@bmers145.bnr.ca>
Distribution: na
Organization: Apple Computer Inc., Cupertino, CA
Lines: 23

In article <1990Oct17.143151.5125@bmers145.bnr.ca> sanjiv@bmers187.uucp (Sanjiv Khurana) writes:
>Mac SCSI Expert Advice Needed
>----------------------------
>Subject: how to reselect the Mac after disconnection.
>
>The problem is how to make the Mac respond to reselection.  I can poll the
>SCSI bus (using SCSIStat) but once I recognize that the device wants
>to reselect, how do I tell the Mac that I want to acknowledge the 
>reselection?  I need to assert the BSY line to acknowledge it, according
>to the SCSI standard. Once that's done, the device will take over again, and
>all's well.  

I tried to e-mail you, but our mailer claimed it couldn't
reach you, so I'm responding publicly.

Unfortunately, disconnect/reconnect is not supported by the
Mac SCSI manager.  In other words, you're stuck.  There is no
legal way to do what you want to do.

Some third party's have rewritten to SCSI manager to include this
feature.  But I would not recommend this.

David