IE_CMD_NOP_STATUS
sc->ie_bus_write16(sc, IE_CMD_NOP_STATUS(sc->nop_cmds, cur), 0);
sc->ie_bus_write16(sc, IE_CMD_NOP_STATUS(sc->nop_cmds, prev), 0);
(sc->ie_bus_write16)(sc, IE_CMD_NOP_STATUS(sc->nop_cmds, n), 0);