Format of EMS copy data:
Offset	Size	Description	)
 00h	DWORD	region length in bytes
 04h	BYTE	source memory type
		00h conventional
		01h expanded
 05h	WORD	source handle (0000h if conventional memory)
 07h	WORD	source initial offset (within page if EMS, segment if convent)
 09h	WORD	source initial segment (conv mem) or logical page (EMS)
 0Bh	BYTE	destination memory type
		00h conventional
		01h expanded
 0Ch	WORD	destination handle
 0Eh	WORD	destination initial offset
 10h	WORD	destination initial segment or page