#include <stdio.h>
#include <unistd.h>
#include <sys/io.h>
#include <ncurses.h>
int main ()
{
  int n=0; 
  int i=0; 
  ioperm(0x300,4,0x300);
  outb(0x90,0x303); 
  initscr(); 
  cbreak(); 
  noecho(); 
  halfdelay(1); 
  do 
  {
    i=inb(0x300); 
    usleep(1e5); 
    outb(i,0x301); 
    outb(i,0x302); 
    n=getch(); 
    }while(n<=0); 
  endwin(); 
  return (0); 
  }