From:	gminer AT Newbridge DOT COM (Glen Miner)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Memory Protection
Date:	14 Nov 1996 17:44:21 GMT
Organization:	Newbridge Networks Corporation
Lines:	20
Message-ID:	<56flpl$q6v@kannews.ca.newbridge.com>
NNTP-Posting-Host:	138.120.136.238
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

I am currently porting a 16 bit program to djgpp, and I am being
introduced to the wonderfull world or memory protection. It seems that
video memory is protected, and I'm not allowed to freely read/write in it.

I have discovered that I can use some macro to disable the memory
protection in my program, but I am wondering if this is wise.

If I disable memory protection, will my program run faster?

Is it less safe? (Ie: if I lead a pointer astray, will it crash harder?
ie: reboot not just segmentation fault). 

Would it be wiser to somehow take ownership of the video memory buffer so
that it doesn't have to be protected from me?

Peace
-- 
===[ Gabo / [ABC] : gaminer AT undergrad DOT math DOT uwaterloo DOT ca ]===================
Latest ABC Shogi: http://www.undergrad.math.uwaterloo.ca/~gaminer/shogi.html
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