Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83; site oddjob.UChicago.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!ihnp4!oddjob!matt From: matt@oddjob.UChicago.UUCP (Matt Crawford) Newsgroups: net.unix-wizards Subject: Resolution of the UBA zero vectors Message-ID: <551@oddjob.UChicago.UUCP> Date: Thu, 20-Dec-84 16:46:21 EST Article-I.D.: oddjob.551 Posted: Thu Dec 20 16:46:21 1984 Date-Received: Sat, 22-Dec-84 02:33:15 EST Reply-To: matt@oddjob.UUCP (Matt Crawford) Organization: U. Chicago: Astronomy & Astrophysics Lines: 12 Thanks go out to all who sent enlightening comments. DEC finally eliminated the unibus adapter zero vector problem. It was a conflict between the uda50 and our 3 dz11's. Their long term solution may be to not sell such a configuration to new customers, but in our case they cut the etch and soldered some new connections on the dz boards. The zero vectors have stopped and our terminals still work(!). There will be a "tech tip" on the problem eventually as this potentially afflicts any unix or ultrix site. (Also vms, but you'll never be aware of it.) _____________________________________________________ Matt University crawford@anl-mcs.arpa Crawford of Chicago ihnp4!oddjob!matt