Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site ut-sally.UUCP Path: utzoo!linus!philabs!cmcl2!seismo!ut-sally!crandell From: crandell@ut-sally.UUCP (Jim Crandell) Newsgroups: net.arch Subject: Re: Arbitrary byte alignment Message-ID: <20@ut-sally.UUCP> Date: Tue, 16-Oct-84 00:16:39 EDT Article-I.D.: ut-sally.20 Posted: Tue Oct 16 00:16:39 1984 Date-Received: Wed, 17-Oct-84 19:30:48 EDT References: <393@ism780.UUCP> Organization: U. Texas CS Dept., Austin, Texas Lines: 12 > Actually, the 1620 addressed its digits in even/odd pairs and, although > an address had no restriction to be even or odd, there was a performance > gain by aligning on a pair boundary. I guess that makes it a decadent > machine (I know several people who would agree with that estimation). Almost. Instructions had to start at even addresses, and the performance advantage (which was all of 10 musec -- 1 cycle -- on, for example, TF and TR) applied only to the Model II. -- Jim Crandell, C. S. Dept., The University of Texas at Austin {ihnp4,seismo,ctvax}!ut-sally!crandell