Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!uunet!kithrup!sef
From: sef@kithrup.COM (Sean Eric Fagan)
Newsgroups: comp.arch
Subject: Multiple Register sets (was Re: XDS940 computer (or Xerox Sigma 9))
Message-ID: <1991Jun12.192459.13531@kithrup.COM>
Date: 12 Jun 91 19:24:59 GMT
References: <22724@paperboy.OSF.ORG> <13016@uwm.edu>
Organization: Kithrup Enterprises, Ltd.
Lines: 16

In article <13016@uwm.edu> jgd@convex.csd.uwm.edu writes:
>[Of current general purpose machines, how many use multiple register sets?
> Unisys 1100/2200 (formerly Univac and Sperry) systems do -- two sets,
> one OS only, and one for everything else.  Any others?]

The ELXSI has multiple register sets.  32, I believe.  And it, too, could
context switch merely by chaning register sets.

The i960 has multiple "local" register sets, but it uses them on a per-call
basis, not per-task.

-- 
Sean Eric Fagan  | "I made the universe, but please don't blame me for it;
sef@kithrup.COM  |  I had a bellyache at the time."
-----------------+           -- The Turtle (Stephen King, _It_)
Any opinions expressed are my own, and generally unpopular with others.