Format of EMS hardware configuration array:
Offset	Size	Description	)
 00h	WORD	size of raw EMM pages in paragraphs
 02h	WORD	number of alternate register sets
 04h	WORD	size of mapping-context save area in bytes
 06h	WORD	number of register sets assignable to DMA
 08h	WORD	DMA operation type
		0000h DMA with alternate register sets
		0001h only one DMA register set