INT 10 - VIDEO - Compaq Extensions - SET HIGH ADRESS MAP REGISTER               
	AX = BF0Fh
	BX = high address map location in megabytes, or
	    0000h to disable high address map, or
	    FFFFh to let ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. configure high address map
Return: CF clear
	AX = previous value of high address map register
Notes:	supported by at least the QVision board and the SystemPro XL and LTE
	  Lite ROM(Read-Only Memory) A memory for program storage which may not be changed by the program as it runs. BIOSes
SeeAlso: AX=BF10h