public link void OS_init(){} = driver.OS_init;
public link void SetAXAY(bit n1,bit n2){} = driver.SetAXAY;
public link void SetBXBY(bit n1,bit n2){} = driver.SetBXBY;
public link void get_x(){} = driver.get_x;
public link void get_y(){} = driver.get_y;
