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From: dylan@ibmpcug.co.uk (Matthew Farwell)
Newsgroups: comp.os.misc
Subject: Call Gates vs. traps
Message-ID: <1991Apr3.073617.1167@ibmpcug.co.uk>
Date: 3 Apr 91 07:36:17 GMT
Article-I.D.: ibmpcug.1991Apr3.073617.1167
Reply-To: dylan@ibmpcug.CO.UK (Matthew Farwell)
Organization: The IBM PC User Group, UK.
Lines: 15

This is a simple enough question. (The answer won't be though).

Multics and OS/2 use Call Gates to implement system calls, whereas the
rest of the universe uses traps, yes?  What are the advantages/
disadvantages of using Call Gates over traps?

(This isn't a homework question, in case you were wondering).

p.s. Can anyone tell me how to get any references on Multics?

Dylan.
-- 
Matthew J Farwell: dylan@ibmpcug.co.uk || ...!uunet!ukc!ibmpcug!dylan
If you've ever wondered how to get triangles from a cow, you need
	butter, milk and cheese and an equilateral chainsaw.