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.