Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.1 6/24/83 (MC830713); site hwcs.UUCP Path: utzoo!watmath!clyde!burl!mgnetp!ihnp4!houxm!houxz!vax135!ukc!edcaad!hwcs!andrew From: andrew@hwcs.UUCP (Andrew Stewart) Newsgroups: net.unix-wizards,net.bugs.4bsd Subject: Re: UDA50/RA81 problems.... Message-ID: <145@hwcs.UUCP> Date: Wed, 15-Aug-84 23:31:23 EDT Article-I.D.: hwcs.145 Posted: Wed Aug 15 23:31:23 1984 Date-Received: Sat, 11-Aug-84 03:00:08 EDT Organization: Computer Sci., Heriot-Watt U., Scotland Lines: 10 We are running a VAX-11/750 under 4.2BSD with an RA81 driven from a UDA50; like a number of other sites, we have experienced the ra81/uda50 going offline for no apparent reason. Does *anyone* know what causes this? Is there a cure? Is it a problem in the uda50? The ra81? The driver software? Is it (as I suspect) a UBA timing window problem? Any pointers or ideas would be welcomed. I will, as usual, summarise. Andrew Stewart, Dept. of Computer Science, Heriot-Watt University, Edinburgh.