INT 15 - Compaq Contura 486 and "Alladin" 1993/08/05 ROMs - ???
	AX = 4605h
Return: CF clear if successful
	CF set on error (not supported)
	    AH = 86h (unsupported function)
Note:	this function is a NOP (other than clearing CF) in the 1993/08/05
	  version of the Contura 486/486c/486cx and "Aladdin" ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs., and the
	  1993/7/26 LTE Lite 386 ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs.