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From: goldman@ittvax.ATC.ITT.UUCP (Ken Goldman)
Newsgroups: net.unix
Subject: TE16,RM05 Controller
Message-ID: <445@ittvax.ATC.ITT.UUCP>
Date: Tue, 23-Jul-85 12:49:25 EDT
Article-I.D.: ittvax.445
Posted: Tue Jul 23 12:49:25 1985
Date-Received: Fri, 26-Jul-85 03:32:47 EDT
Distribution: net
Organization: ITT-ATC, Shelton Ct.
Lines: 16

Someone asked for *any* information on running a TE16 and RM05 on the
same controller.  As I remember, these run off a massbus controller.

Back in my 11/70 days, RSX could not support different devices on one 
controller.  The problem was not hardware; the controller could
serve 8 devices in any mix.  The software could not handle the fact 
that the controller had only one interrupt vector.  I think that
later versions of RSX were supposed to fix that.

There is also the performance issue.  The massbus only handles a block
data transfer from one device at a time.  However, it also has a
separate control bus, so that (for example) you can issue a seek on a 
disk while a tape is doing a data transfer.

P.S. As I am new to the new, would someone please send me mail or post
a response so I can tell if I am getting out into the world.