chris@umcp-cs.UUCP (08/12/84)
My understanding was that the ``random offline'' problem was due to
a timing bug in the UDA50 microcode. If you rave at DEC long enough
they will probably swap ROMs (or even boards) for you. Or, you could
kludge around with watchdog timers and UBA resets and the UDA init
code and try to force it back on every time it goes off line.
--
In-Real-Life: Chris Torek, Univ of MD Comp Sci (301) 454-7690
UUCP: {seismo,allegra,brl-bmd}!umcp-cs!chris
CSNet: chris@umcp-cs ARPA: chris@marylandandrew@hwcs.UUCP (Andrew Stewart) (08/16/84)
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.