CGEM_RX_STAT
RD4(sc, CGEM_RX_STAT));
WR4(sc, CGEM_RX_STAT, CGEM_RX_STAT_HRESP_NOT_OK);
WR4(sc, CGEM_RX_STAT, CGEM_RX_STAT_OVERRUN);
WR4(sc, CGEM_RX_STAT, CGEM_RX_STAT_ALL);