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From: sklower@ucbvax.UUCP
Newsgroups: fa.info-vax
Subject: Faster Nebula (11/730) Unibus
Message-ID: <753@ucbvax.UUCP>
Date: Sat, 10-Sep-83 20:39:46 EDT
Article-I.D.: ucbvax.753
Posted: Sat Sep 10 20:39:46 1983
Date-Received: Tue, 13-Sep-83 17:22:29 EDT
Sender: sklower@ucbvax.UUCP
Organization: U. C. Berkeley Computer Science
Lines: 10

>From GEOFF5@SRI-CSL  Sat Sep 10 17:39:33 1983
Re: G.Garland's query about faster 730 unibus

I don't believe the nebula unibus per-say is faster (though the 11/34 unibus
was known to be slower than the 11/70's). I believe the reason you are seeing
better unibus performance is that the Nebula can do burst-mode i/o
(it locks down the bus for several back to back transfers). This was not
available on the STAR (11/780).

						- Steven Gutfreund