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From: muller@sdcc7.ucsd.EDU (Keith Muller)
Newsgroups: net.unix-wizards
Subject: Re: 4.3 hangs
Message-ID: <460@sdcc7.ucsd.EDU>
Date: Sat, 2-Aug-86 04:41:45 EDT
Article-I.D.: sdcc7.460
Posted: Sat Aug  2 04:41:45 1986
Date-Received: Sun, 3-Aug-86 03:27:14 EDT
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Organization: U.C. San Diego, Academic Computer Center
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i had that problem also. It is bogus microcode in the cs21/f2 version. The
board goes into a infinite loop while it has the unibus doing dma output.
The reason it never shows up on 4.2 is that driver did not do dma on output.
Next time it happens flip reset switch (position 1) on the cs21 from normal
to reset and back. When the offending dmf is found the system will come
back to life. Of course the dmfs are now in a weird state, but at least you
can shut down cleanly. Bug emulex for a prom upgrade.

	keith Muller
	university of california
	muller@sdcsvax.ucsd.edu