IEE_SCB_CUC_EXE
(sc->sc_iee_cmd)(sc, IEE_SCB_CUC_EXE | IEE_SCB_RUC_ST);
(sc->sc_iee_cmd)(sc, IEE_SCB_CUC_EXE);
(*sc->sc_iee_cmd)(sc, IEE_SCB_CUC_EXE);