SBP_FILTER_ON
mixval |= SBP_FILTER_ON | SBP_IFILTER_HIGH;
mixval |= SBP_FILTER_ON | SBP_IFILTER_LOW;
case SBP_FILTER_ON|SBP_IFILTER_HIGH:
case SBP_FILTER_ON|SBP_IFILTER_LOW: