INT 2F - Novell DOS 7+ - MEMORYMAX CREATE ACCESS KEY                            
	AX = 12FFh
	BX = 0406h
Return: CF clear if successful
	    AX = 0000h (successful)
	    CX = 0000h
	    SI:DI = access key
	CF set on error
	    AX = function status
		0000h function supported
		    CX error code
		       80h if access key already exists
	        0001h (AX > 0) function not supported
		    CX undefined
Note:	This function is supported by Novell DOS 7+ EMM386.EXE 3.0+ and
	  possibly by HIMEM.SYS 2.3+.
SeeAlso: AX=12FFh/BX=0506h