#include <iostream.h>
#include <dos.h>
#include <conio.h>
#include <stdio.h>
 
#define COM1 0x3F8
 
int main(void)
{
  clrscr();
 
//  outportb( COM1 + 1, 0 );
  outportb( COM1 + 3, 0x83);
  outportb( COM1, 0x0C);
  outportb( COM1 + 1, 0x00);
  outportb( COM1 + 3, 0x03);
 
  char ans;
  char readValue;
 
  do
  {
 
	readValue = inportb( COM1 + 5 );
 
	if ( readValue & 0x80 )
	{
	   printf("ERROR!");
	   continue;
	}
 
	if ( readValue & 1 )
	{
	   readValue = inportb( COM1 );
	   printf("%c", readValue);
	}
 
	if ( kbhit() )
	{
	   ans = getch();
	   outportb( COM1, ans );
	}
 
 
  } while ( ans != 27 );
 
 
  return 0;
 
}