INT 2F PU - Borland C++ 3.0 DPMILOAD.EXE - CONVERT SELECTOR TO SEGMENT NUMBER   
	AX = FB42h
	BX = 0023h
	CX = selector
Return: DX = status (see also AX=FB42h/BX=0004h)
	    0000h successful
		CX = real-mode segment number
	    FFF2h descriptor has invalid base address for real-mode segment
SeeAlso: AX=FB42h/BX=0010h