hrb              1550 dev/ic/isp.c   		NANOTIME_T hra, hrb;
hrb              1563 dev/ic/isp.c   		GET_NANOTIME(&hrb);
hrb              1569 dev/ic/isp.c   		enano = NANOTIME_SUB(&hrb, &hra);
hrb              1573 dev/ic/isp.c   		    count, (long) GET_NANOSEC(&hra), (long) GET_NANOSEC(&hrb),