Subj : Interrupts
To : Jonathan De Boyne Pollar
From : Lee Aroner
Date : Tue May 29 2001 02:35 am
LA> I had assumed that OS/2 used the same method of
LA> forcing a processor exception
LA> to jump to ring zero as MonopolySoft uses, apparently I was wrong.
JdBP> Strictly speaking, the design of OS/2 in this area is partly Microsoft's.
I guess that would tell us something about what G. Letwin thought
of the jump to the bios IBM copyright notice as a means of
switching processor state then, eh?
Oddly enough, it was IBM that originally came up with that
method, although it was Bilge and crew that took a patent on the
use of the idea.
LRA
-- SPEED 2.01 #2720: The only good extremist is a dead extremist.
--- Maximus/2 3.01
* Origin: Top Hat 2 BBS (1:343/41)
