From:	gautam AT interlog DOT com (Gautam N. Lad)
Newsgroups:	comp.os.msdos.djgpp
Subject:	DJGPP Problem : Clearing screen in Mode 13H
Date:	Tue, 03 Jun 97 02:10:13 GMT
Organization:	InterLog Internet Services
Message-ID:	<5n24tk$ptp@news.interlog.com>
NNTP-Posting-Host:	ip203-209.cc.interlog.com
Lines:	28
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi,
I've written a PCX viewer in Mode 13H, in TC++, and in that, I use memset() to
clear the screen (eg. memset((BYTE *)Screen,64000,0);), and I also use 
memcpy() in another program (a game), for double buffering.  

So, now I want to port the program to DJGPP, and following the tutorial from 
the DJGPP Book Project on Graphics Programming, I converted my PutPixel() 
and Mode() (set's Video mode), so it won't cause all GPFs!

However,  memset() kept causing the GPFs.  How do I clear the screen
very fast, in C/DJGPP (No ASSEMBLY)?  The tutorial says that something like 
dosmemput() is slow.

Please help!

Bye!

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* Gautam N. Lad                                    *
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