Function  05h   Printer Output 
      Write character to STDPRN 
entry   AL      05h 
	DL      character to send 
return  none 
note 1) If Ctrl-C is has been entered from STDIN, int 23h is executed. 
     2) Default is PRN or LPT1 unless redirected with the MODE command. 
     3) If the printer is busy, this function will wait until it is ready.