ACXREG_INTR_ACK  1109 dev/ic/acx.c   	CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_ALL);
ACXREG_INTR_ACK  1552 dev/ic/acx.c   			CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_FCS_THRESH);
ACXREG_INTR_ACK  2645 dev/ic/acx.c   			CSR_WRITE_2(sc, ACXREG_INTR_ACK, ACXRV_INTR_CMD_FINI);