From: Larry Swanson <laswanson AT mwci DOT net>
Newsgroups: comp.os.msdos.djgpp
Subject: memcpy after djgpp nearptr enable//VESA 2.0 double buffer problem
Date: Mon, 30 Jun 1997 11:10:27 -0500
Organization: MidWest Communications, Inc.
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To: djgpp AT delorie DOT com
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I'm kind of embarassed to admit this, but I'm having trouble getting a
double buffer working.

//This is my
code------------------------------------------------------------------------->

void ShowBuffer(){
    __djgpp_nearptr_enable();
    memcpy(video,DoubleBuffer,640*480*2);
    __djgpp_nearptr_disable();
}//---------------------------------------------------------------------------------------->

/*----------------------------------------------------------------------------------------->

* In the above code "video" is  the address of the linear frame buffer
obtained from VESA 2.0 plus
*__djgpp_conventional_base.   DoubleBuffer is a short * obtained by
*            DoubleBuffer=(short*)malloc(640*480*2);
*------------------------------------------------------------------------------------------>*/

I don't know why this doesn't work and would I appreciate a good kick in

the butt if I have made some stupid assumption somewhere.  ALSO I am
willing to share my VESA 2 mode setting code with anyone who wants it.