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Article View: comp.sys.amiga.tech
Article #2244

Re: Apple SCSI not compatible with standard SCSI?

#2244
From: Ethan R Dicks
Date: Mon, 20 Nov 1989 06:46
33 lines
1941 bytes
In article <8608@cbmvax.UUCP> steveb@cbmvax.UUCP (Steve Beats) writes:
>In article <1410034@hpcvca.CV.HP.COM> charles@hpcvca.CV.HP.COM (Charles Brown) writes:
>>[stuff deleted]
>>
[ more stuff deleted ]
>                        However, SCSI drivers have to check 7 distinct
>SCSI bus addresses to see if drives are hooked up (there is a way under
>the new RDB scheme to shortcut this check, but that`s not important here).
[ still more stuff deleted ]
>
>	Steve

So could Steve or someone else tell us the order that C= controllers use
in querying the SCSI bus?  Theoretically, you could set the naughty device
toward the end of the chain so that several device numbers must time out
before getting to the valid device, giving it time to pay attention...

I.e.  If the order is 0 - 7, and there is a 4 second timeout per device and
a Seagate takes up to 12 seconds to pay attention to the bus after a reset,
then the drive should be set to at least 3, giving the drive time to wait
for the controller to timeout on 0, 1 and 2.

Is this a valid workaround?

-ethan



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Ethan R. Dicks       | ######  This signifies that the poster is a member in
Software Results Corp|   ##    good sitting of Inertia House: Bodies at rest.
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Columbus OH    43229 | ######  "You get it, you're closer."
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Message-ID: <74147@tut.cis.ohio-state.edu>
Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!giza.cis.ohio-state.edu!erd
References: <ANDREWT.89Nov13165620@watsnew.waterloo.edu> <1410034@hpcvca.CV.HP.COM> <8608@cbmvax.UUCP>

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Path: arc1-ca.pugleaf.net!utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!giza.cis.ohio-state.edu!erd
From: erd@giza.cis.ohio-state.edu (Ethan R Dicks)
Newsgroups: comp.sys.amiga.tech
Subject: Re: Apple SCSI not compatible with standard SCSI?
Message-ID: <74147@tut.cis.ohio-state.edu>
Date: 20 Nov 89 06:46:19 GMT
References: <ANDREWT.89Nov13165620@watsnew.waterloo.edu> <1410034@hpcvca.CV.HP.COM> <8608@cbmvax.UUCP>
Sender: news@tut.cis.ohio-state.edu
Reply-To: Ethan R Dicks <erd@cis.ohio-state.edu>
Organization: Ohio State University Computer and Information Science
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