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From: steve@altos86.Altos.COM (Steve Scherf)
Newsgroups: comp.unix.sysv386
Subject: Re: <21688@scuzzy.mbx.sub.org>
Summary: SCSI synchronous negotiation
Keywords: SCSI synchrnonous Adaptec
Message-ID: <4062@altos86.Altos.COM>
Date: 13 Sep 90 06:00:00 GMT
References: <21688@scuzzy.mbx.sub.org> <77900002@adaptex>
Reply-To: steve@Altos.COM (Steve Scherf)
Organization: Altos Computer Systems, San Jose, CA
Lines: 18

In article <77900002@adaptex> neese@adaptex.UUCP writes:
>
>... I would allow a device to do the
>negotiation as some devices will do the negotiation on each data transfer.
>If the 154x does the negotiation, it will only be done once.
>

Do you really mean this? It seems to me that you really only need to
negotiate once, since the parameters of the synchronous transfer are not
going to change. It also seems a waste of SCSI bus bandwidth, since going
through the extended message sequence before the command phase on each
data transfer would add to the overhead of the command.

-- 
Steve Scherf
steve@Altos.COM    ...!{sun|sco|pyramid|amdahl|uunet}!altos!steve

These opinions are solely mine, but others may share them if they like.