Path: utzoo!utgpu!jarvis.csri.toronto.edu!rutgers!sun-barr!ames!amdahl!nsc!pyramid!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.unix.ultrix
Subject: Re: Ultrix 3.0 - help
Message-ID: <7048@cbmvax.UUCP>
Date: 3 Jun 89 05:12:49 GMT
References: <1744@ucsd.EDU>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Distribution: usa
Organization: Commodore Technology, West Chester, PA
Lines: 26

In article <1744@ucsd.EDU> rmyers@net1.ucsd.edu (Robert Myers) writes:
> 
> I tried taking all of the stuff concerning the DT board's device driver
> from the previous Ultrix 2.0 system, then reinstalling it.  The kernel
> was rebuilt successfully, but when I tried to boot from it, the machine
> died in the middle of reboot with a "panic" message.  After a couple of
> shots at this, I gave up.
> 
> Is there anything different about device drivers for Ultrix 3.0
> compared to Ultrix 2.0?

Well, the most obvious thing is that they changed the memory allocation
routines around.  This is described in section 2.5.3 of the Ultrix 3.0
release notes.

There's no reason to believe that any piece of kernel level object
code will be compatible between releases.

It would really be nice if DEC included a cumulative "incompatibilities
with BSD 4.2/Ultrix 1.0/Ultrix..." section in the release notes.  Not
everybody has/keeps the whole set.

-- 
George Robbins - now working for,	uucp: {uunet|pyramid|rutgers}!cbmvax!grr
but no way officially representing	arpa: cbmvax!grr@uunet.uu.net
Commodore, Engineering Department	fone: 215-431-9255 (only by moonlite)