Xref: news2.mv.net comp.os.msdos.djgpp:3889
From: jlouwere AT galaxy DOT csc DOT calpoly DOT edu (Jan Louwerens)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Q: How to handle 64k segments?
Date: 15 May 1996 18:56:43 GMT
Organization: Cal Poly Computer Science Dept.
Lines: 23
Distribution: world
Message-ID: <4nd9db$k66@waldorf.csc.calpoly.edu>
References: <19960515131942 DOT herzer AT assi2 DOT fbp DOT fh-weingarten DOT de>
NNTP-Posting-User: jlouwere AT galaxy DOT csc DOT calpoly DOT edu
To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Armin Herzer (herzer AT fbp DOT fh-weingarten DOT de) wrote:
: Hello all,
: I have the following question concerning DJGPP (v1.12mt5 and v2):
: What must I do to copy a 64k segment (starting at DC000) into
: an array with the size of [256][256].
: Can someone please post me an example?
: Thanks for your help!
: Armin
: Armin Herzer
: FH Ravensburg-Weingarten
: Postfach 1261
: 88241 Weingarten
: e-mail: herzer AT fbp DOT fh-weingarten.

I believe DJGPP runs in protected mode with 32 bit segments, not 16 bit.
Just try dereferencing pointers to copy the whole 64k.
for (Index = 0; Index < 65536; Index++) {
   *(Dest + Index) = *(Source + Index);
}
Make sure Index is larger than 16 bit otherwise this will loop forever.

JL