INT 2D - DTown Utilities v1.40+ - MEMORY VIEW SET ADDRESS

	AL = 50h
	CX:DX = new address for start of memory view utility's display
Note:	this function is only available if the extended API has been installed
	  in the resident portion
Return: AL = FFh if supported
SeeAlso: INT 2D/AL=10h"DTown",INT 2D/AL=20h,INT 2D/AL=21h,INT 2D/AL=51h