detect.h

FritzOS - 简单的C++开发OS的实例// 英文

/* detect.h : FritzOS Hardware Dectection Header File For The FritzOS C++ Kernel
   Copyright (C) 2002 Tom Fritz

 * This program is a part of the FritzOS kernel, and may be freely
 * copied under the terms of the GNU General Public License (GPL),
 * version 2, or at your option any later version.

   For more info, look at the COPYING file.
*/

// Defines:

// Define information to let the compiler know detect.h was included
#ifndef DETECT_H
#define DETECT_H		// Was included

// Defines for seeing if there's a color or mono video card
#define MONOCARD	0		// There's a mono card - 2 colors
#define COLORCARD	1		// There's a color card

// voids:
int DetectVidCard();

//////////////////////////////////////////////////////////////////////////////////////////////////////////////
//

// Example: int detectifvid = DetectVidCard();		// See if there's a video card...if detectifvid ==
//  COLORCARD, then there is a color card, else if it's MONOCARD, it's a mono card.
int DetectVidCard()
{
	int detect;		// Int used for returning if there's a mono or color card
	char colormono = ( * ( USHORT * ) 0x410 ) & 0x30;	// The memory location for detecting the card
								//  type
		// colormono will contain 0x00 or 0x20 for color, 0x30 for mono.
		// Check to see if colormono is returns a mono card
		if ( colormono == 0x30 )
			colormono = MONOCARD;		// Yes, using a mono card

		// Check to see if colormono returns a color card
		else if ( colormono == 0x00 || 0x20 )
			colormono = COLORCARD;	// Using a color card

	return colormono;
}

#endif				// End of included file

// End of detect.h