INT 67,4D - Get Page Count for All Handles (LIM EMS)

	AH = 4Dh
	ES:DI = pointer to handle array

	on return:
	AH = 00  success
	   = error code (see EMS STATUS)
	BX = number of active EMM handles (0..255)
	ES:DI = pointer to an array of entries of the format:

	   Offset  Size     Description
	     00    word   EMS handle number
	     02    word   number of pages

	- buffer at ES:DI should be able to hold an array of at least 4*BX
	- an error will occur if ES:DI points to a buffer that will
	  cause a segment swap
	- registers not listed are preserved