Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.1 6/24/83; site decvax.UUCP
Path: utzoo!linus!decvax!minow
From: minow@decvax.UUCP (Martin Minow)
Newsgroups: net.micro
Subject: Re: Micro Vax I
Message-ID: <297@decvax.UUCP>
Date: Wed, 30-Nov-83 19:51:18 EST
Article-I.D.: decvax.297
Posted: Wed Nov 30 19:51:18 1983
Date-Received: Fri, 2-Dec-83 00:17:57 EST
References: <777@uw-june>
Organization: DEC UNIX Engineering Group
Lines: 16

Garret Swart's interesting article on the Micro Vax contained one
statement that might be confusing to readers unfamiliar with the
LSI-11 Q-bus -- that it is a "22-bit bus"

The 22 bits refers to the number of address bits that the bus
supports.  The bus may be a bottleneck because address and
data are carried on the same signal lines, rather than on
separate lines as on the Unibus.   (This is from memory --
so don't blame Dec if I'm wrong.)

The Q-bus and Q-bus periferals are much less expensive to manufacture
than the Unibus, a savings that is reflected in the price of the
product.

Martin Minow
decvax!minow