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From: GWD21T@DGOGWD01.BITNET ("W.J.Moeller")
Newsgroups: comp.os.vms
Subject: UNIBUS mapping registers
Message-ID: <8708051135.AA17152@ucbvax.Berkeley.EDU>
Date: Wed, 5-Aug-87 07:35:59 EDT
Article-I.D.: ucbvax.8708051135.AA17152
Posted: Wed Aug  5 07:35:59 1987
Date-Received: Fri, 7-Aug-87 06:52:18 EDT
Sender: daemon@ucbvax.BERKELEY.EDU
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After running for 2-3 weeks without problems, out VAX 8600 (VMS 4.5)
tends to hang or crash. Subsequent SYSDUMP analysis shows that it is
out of UNIBUS MAPPING REGISTERS. Of course, we use a lot of self-written
device drivers, but could not find any culprit.
So for the question: did anyone else observe this phenomenon?
                is there a VMS driver which may eat up registers
                                (I remember XG was mentioned as faulty some
                                time ago on this list).
                any hints on spotting a faulty driver?

W.J.Moeller, GWDG, D-3400 Goettingen, F.R.Germany  <GWD21T@DGOGWD01>
                                                  Phone +49 551 201516