INT 67 - LIM EMS 4.0 - GET/SET HANDLE NAME
        AH = 53h
        AL = subfunction
            00h get handle name
               ES:DI -> 8-byte buffer for handle name
            01h set handle name
               DS:SI -> 8-byte handle name
        DX = handle
Return: AH = status
            00h successful
            80h internal error
            81h hardware malfunction
            83h invalid handle
            84h undefined function requested
            8Fh undefined subfunction
            A1h duplicate handle name