Format of EMM386.EXE data buffer:
Offset	Size	Description	)
 00h	BYTE	(call) function
		03h get ???
		04h get ???
---function 03h---
 00h	WORD	???
 02h	WORD	???
---function 04h---
 00h	WORD	segment of UMB containing EMM386 code/data
 02h	WORD	number of paragraphs of EMM386 code/data in UMB
 04h	WORD	???