Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site ganehd.UUCP Path: utzoo!watmath!clyde!akgua!ganehd!mp From: mp@ganehd.UUCP (Scott Barman) Newsgroups: net.unix-wizards Subject: One's-complement UNIX (tm)?? Message-ID: <129@ganehd.UUCP> Date: Sun, 18-Mar-84 20:11:38 EST Article-I.D.: ganehd.129 Posted: Sun Mar 18 20:11:38 1984 Date-Received: Mon, 19-Mar-84 08:10:50 EST Organization: NE Health District, Athens, Georgia Lines: 28 (-:#:-) Have you ever heard of Unix (tm) running on a one's-complement machine? We havn't, that's why we are trying it! Here at the University of Georgia, we thought that it would be an interesting project to port V7 Unix to a one's complement machine. Since the beginning of the project, we have run into many interesting problems caused by the one's complement arithmetic. So far we have either solved these or found a way to work around the problem, but we feel that there are going to be many more as we continue with this endevor. What I would like is for anyone who has experience on a one's complement machine, especially running Unix, who can give us any feedback in some of the real out-of-the-ordinary problems we might encounter and a way of avoiding them. As a guide, we are doing this on a Control Data Corp. Cyber 18/20: a 16-bit, word addressable, one's complement computer with 256Kb of memory. ANY feedback is appreciated! Scott A. Barman UUCP: ..!akgua!ganehd!mp USPS: Scott A. Barman Department of Computer Science University of Georgia 415 Boyd Graduate Studies Research Center Athens, Ga 30602 Ma Bell: 404-542-2911 (1:00p-6:00p Eastern Time, please)