Path: utzoo!utgpu!jarvis.csri.toronto.edu!mailrus!ames!lll-winken!uunet!mcvax!kth!draken!tut!santra!kampi.hut.fi!alo
From: alo@kampi.hut.fi (Antti Louko)
Newsgroups: comp.unix.wizards
Subject: br & cvec (in VAX-device-drivers)
Message-ID: <20718@santra.UUCP>
Date: 21 Mar 89 19:37:48 GMT
Sender: news@santra.UUCP
Reply-To: alo@kampi.hut.fi (Antti Louko)
Organization: Helsinki University of Technology, Finland
Lines: 5

What are the reasons for using registers r11 (br) and r10 (cvec) as
global variables in the probe routines of VAX-BSD device-drivers.
I think there must be some historical reasons for this practise.

For example, Ultrix uses global variables for the same purpose.