Function  08h   Console Input Without Echo                (checks BREAK) 
      Get or Wait for char at STDIN, return char in AL 
entry   AH      08h 
return  AL      char from standard input device 
note 1) Char is checked for ctrl-C. If ctrl-C is detected, executes (Int\23.
     2) For function call 08h, extended ASCII characters require two function  
	calls. The first call returns 00h to signify an extended ASCII code.  
	The next call returns the actual code. 
     3) Input is redirectable. If redirected, there is no way to check EOF.