APS_READ_1
if (aps_do_io(iores, iobuf, APS_WRITE_0, APS_READ_1)) {
if (aps_do_io(iores, iobuf, APS_WRITE_0, APS_READ_1))
if (aps_do_io(sc->sc_iores, iobuf, APS_WRITE_0, APS_READ_1)