INT 17 U - Emulaser ELTSR - ???                                                 
	AX = 0500h
	???
Return: AX = unload status (0001h safe to unload, 0002h not safe)
	BX = ???
	CX = PSPsee Program Segment Prefix segment of ELTSR
	DX = activity flag (0000h disabled, 0001h capturing, 0002h ???printing)
	SI = ???
	DI = ???
SeeAlso: AH=04h,INT 1A/AH=E5h