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From: frank@croton.DEC.COM (Frank Wortner)
Newsgroups: comp.unix.ultrix
Subject: Re: How do you identify VAX/PMAX cpu's from software?
Keywords: CPU identification
Message-ID: <1242@riscy.dec.com>
Date: 30 May 89 16:00:05 GMT
References: <40619@bbn.COM> <105@asihub.UUCP> <7005@cbmvax.UUCP>
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In article <40619@bbn.COM>, fkittred@bbn.com (Fletcher Kittredge) writes:

> In article <105@asihub.UUCP> dan@asihub.UUCP (Dan O'Neill) writes:
> > Is there a way to determine the class of a VAX or PMAX cpu under
> > Ultrix?  We would like to be able to tell the difference between a
> > VAXstation 3200, VAXstation 3600, VAXstation 3100 and a DECstation
> > 3100 (pmax) from within a program.  Any and all suggestions are
> > appreciated.
> 
> Well, I don't have access to all of these systems, so this is a guess.  Try
> the uname() system call and check the resulting structure.  If DEC
> did a smart implementation, then the resulting information should tell
> you what you need.  At minimum it should at least tell you if
> your CPU is a MIPS or a VAX chip and the name and version of the O/S.
> 

Fletcher, you are right.  Ultrix uname does exactly the minimum you describe.
Unfortunately, it does not descriminate amoung the various CPU implementations.
That is, uname will say that the machine is a VAX, but nothing more.  It could
be a 780, 3600, or whatever.  I'm afraid that bit-twiddling of magic words obtained
from the kernel is needed to get more information.

Regards,

						Frank

All opinions expressed are mine.  They can be yours for a small fee.