From:	"Pieter Hilkemeijer" <Pieter AT CyberComm DOT NL>
Newsgroups:	comp.os.msdos.djgpp
Subject:	Re: DPMI incorporation...
Date:	9 Jan 1997 20:49:23 GMT
Organization:	CyberComm Internet Services BV, Holland
Lines:	19
Message-ID:	<01bbfdad$ec830680$0100007f@monster>
References:	<199612310023 DOT BAA23998 AT math DOT amu DOT edu DOT pl> <852554000 DOT 109630 AT araga DOT funcom DOT com>
NNTP-Posting-Host:	port2.arnhem.cybercomm.nl
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi,!
> HOW DO YOU DO THAT?? Sorry for the screaming. It's just that I am
> working on a multitasking operating system, and are now doing the
> memory protection/virtual memory stuff, and found it quite anoing that
> I was unable to protect the kernal from itself.  I only got
> documentation on the i386, so I was not aware that it was possible, to
> write-protect memory for supervisor code on a i486. Is there any good
> documentation on the i486 around? Somting like the 386INTEL.TXT from

Check intels www site.. The are docs about pentium and pentium pro. they
are in .pdf format (can be read with free adobe acrobat reader). In the
document is noted wat is added/removed in the processors..

Grtx Pieter

ps. you could make a page or segment readonly. It works on a 386 too:-))

- Raw text -