checkext.c

检测硬盘是否支持扩展13中断纯C语言程序,

/* 检测是否支持扩展13中断 */

#include <dos.h>
int checkExt(unsigned int driveNum)
{
	
	union REGS in,out;
	
	in.h.ah=0x41;
	in.h.dl=driveNum;
	in.x.bx=0x55AA;
	
	int86(0x13,&in,&out);
	
	if(out.x.bx==0xAA55) return 1;
	else return 0;
	
}