INT 15 - DESQview/X 1.02+ - DVDOS4GX.DVR - ???                                  
	AX = BFDEh
	BX = 0004h
	CL = ???
Return: BX = 0000h (success)
	CX:DX -> XBRK structure (see #00508)
SeeAlso: AX=BFDEh/BX=0000h