INT 67h,  4Dh  GET PAGES FOR ALL HANDLES

On entry:
        AH = 4Dh
        ES:DI = pointer to array to receive information

Return:
        AH = status
            00h successful
                BX = number of active EMM handles
                array filled with 2-word entries, consisting of a handle
                  and the number of pages allocated to that handle
            80h internal error
            81h hardware malfunction
            84h undefined function requested