Interrupt 67h	Expanded Memory Specification
Function  4Ch	Get Page Count for Handle
entry	AH	4Ch
	ES:DI	Pointer to empty array
return  AH      status (see Int\67f\40)
		00h	Function Successful
		BX	Number of pages
		ES:DI	Pointer to filled array
note 1) Array is a 1024-byte area which will be filled with two words for each
	handle being used (first word is handle number, second is number of
	pages associated with it)