#include <stdio.h>
#include <dos.h>

#define CLOCK 0x1a  //BIOS clock tix

unsigned int gettix(void);

void main()
{
    unsigned int x;

    x = gettix();       //get tick count

    printf("The tick count is %u.\n",x);
}

unsigned int gettix(void)
{
    union REGS regs;
    struct SREGS sregs;

    regs.h.ah=0x00;   //Read the clock
    int86x(CLOCK,&regs,&regs,&sregs);
    return(regs.x.dx);
}