Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!rutgers!cbmvax!grr
From: grr@cbmvax.UUCP (George Robbins)
Newsgroups: comp.unix.ultrix
Subject: Re: How to write an Ultrix device driver
Message-ID: <6466@cbmvax.UUCP>
Date: 31 Mar 89 00:29:55 GMT
References: <88434@felix.UUCP> <6423@cbmvax.UUCP> <11371@s.ms.uky.edu>
Reply-To: grr@cbmvax.UUCP (George Robbins)
Organization: Commodore Technology, West Chester, PA
Lines: 19

In article <11371@s.ms.uky.edu> brian@ms.uky.edu (Brian Sturgill) writes:
> 
> * I am told that you will need to remove the "register br, cvec"
> * lines from configuration probe routines for these drivers and
> * the ones in contrib/ to work under Ultrix 2.0.
> 
> The purpose of removing "register br, cvec" is that they are now global
>   variables (probably improves efficiency).

Well, actually it's to remove a horrible kluge that depends on the
compiler leaving those register variable in a particular place.  You
may loose a teeny bit of efficiency, but big deal.

I think this is documented somewhere, perhaps in older release notes,
but I can't find it right off.
-- 
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)