Xref: news2.mv.net comp.os.msdos.djgpp:4149
From: jlouwere AT galaxy DOT csc DOT calpoly DOT edu (Jan Louwerens)
Newsgroups: comp.os.msdos.djgpp
Subject: What's wrong with this?
Date: 22 May 1996 19:12:51 GMT
Organization: Cal Poly Computer Science Dept.
Lines: 25
Message-ID: <4nvovj$42q@waldorf.csc.calpoly.edu>
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

I have a class called VirtualScreen that uses a BYTE Screen[200][320] array
(typedef unsigned char BYTE) and another class Lens that has an array BYTE
Buffer[32][32]. When I use VirtualScreen *VScreen = new VirtualScreen(); and
Lens *L = new Lens(); it places the Buffer array right in the middle of the
Screen array. I know this because I've filled Buffer with certain values, and
watched it on the screen when I flip Screen to the VGA screen. I use _djgpp_nearpointer_enable(), but not until after both of the 'new's. If I use BYTE
Buffer[64][64] or BYTE Buffer[128][128] it gives me a runtime error.
(General protection fault, I believe, or maybe page fault.). If I use BYTE
Buffer[256][256] it seems to run ok, but it is a waste of memory since I'm
only using 32*32 of the 256*256 values. Does anybody know what is going on
here? Any help would be greatly appreciated. Thanks.

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 \  \    \ \    \                       |\          \ \          \
  \  \    \ \    \                      | \_____     \ \     _____\
 _____\    \ \    \_____                \ |     \     \ \    \    |
|\          \ \         \                \|______\     \ \    \___|
| \__________\ \_________\                 |\           \ \    \
\ |          | |         |                 | \___________\ \____\
 \|__________|\|_________|                 \ |           | |    |
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