INT 67 - RM386 - MAP PHYSICAL PAGE TO PHYSICAL SEGMENT                          
	AX = 5DE5h
	EBX = physical page number
	DX = page number in first megabyte to be remapped (linear-addr SHR 12)
Return: AH = status
	    00h successful
	    8Bh invalid destination page (not in first megabyte)
Note:	RM386 traps this function on the initial transition to protected
	  mode caused by the INT instruction, which means it can not be
	  overridden simply by hooking the interrupt
SeeAlso: AX=5DE6h