INT 2F - MDEBUG command driver - RESERVED FUNCTIONS                             
	AH = D1h
	AL = 05h-0Ah
Note:	these functions are reserved for future use
                                                                                

INT 2F - MDEBUG command driver - RESERVED FUNCTIONS                             
	AH = D1h
	AL = 13h-7Fh
Note:	these functions are reserved for future use
                                                                                

INT 2F - MDEBUG command driver - USER DEFINED FUNCTIONS                         
	AH = D1h
	AL = 80h-FFh
Note:	these functions are reserved for user defined features (e.g.
	  communication between the transient und resident parts of the driver)