Program To Implement Recalibrate Command in C Starts FDD motor , check its status & turn off Motor

#include
#include
#include

 void main()
 {
int show;
clrscr();
//Put on the motor
outp(0x3f2,28);

 // Check whether the FDC is ready
show=inp(0x3f4); //Read the status of MAIN STATUS REGISTER
show=(show&128);

if(show==128)//Check whether FDC is ready
{

  //Input the command parameters
 outp(0x3f5,7);//Enter command parameters
 delay(200);
 outp(0x3f5,0);//Enter Drive No.
 delay(300);
}
// Check the status of data register
show=inp(0x3f5);
if(show==0)
 printf("Succesfully executed Recalibrate command");
getch();
//Put off the motor
outp(0x3f2,0);

}