//----------------------------------------------------------------
//	grabber1.cpp
//
//	This program uses our 'vram.c' device-driver; it appeared 
//	in Question IV on Midterm II. 
//
//	programmer: ALLAN CRUSE
//	written on: 09 MAR 2005
//----------------------------------------------------------------

#include <fcntl.h>	// for open()
#include <unistd.h>	// for read(), write(), close()

int main( void )
{
	int	src = open( "/dev/vram", O_RDONLY );
	int	dst = open( "image.dat", O_CREAT | O_WRONLY | O_TRUNC, 0666 );
	
	int	res = 1280 * 1024;
	for (int i = 0; i < res; i++)
		{
		unsigned long	pel;
		read( src, &pel, sizeof( pel ) );
		write( dst, &pel, sizeof( pel ) );
		}
	close( dst );
	close( src );
}