From:	aho450s AT nic DOT smsu DOT edu (Tony O'Bryan)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: Ring 0?
Date:	Wed, 05 Mar 1997 12:55:06 GMT
Organization:	Southwest Missouri State University
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To:	djgpp AT delorie DOT com
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On 5 Mar 1997 05:18:44 GMT, ao950 AT FreeNet DOT Carleton DOT CA (Paul Derbyshire) wrote:

>What exactly is "ring 0"? A page on optimizing code using CWSDPR0
>mentioned it. But it's not clear to me what it is. I assume it isn't a
>modem thing...:)

Ring 0 is an operating system term.  It represents the highest permission level
in a protected mode system.  This is where the OS kernal code operates.  It has
direct access to all the hardware and has no supervisor program watching its
every move (since it _IS_ the supervisor).

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