EMU_CHAN_CVCF
emuxki_chan_write(&card->config, i, EMU_CHAN_CVCF, 0xffff);
emuxki_chan_write(&card->config, i, EMU_CHAN_CVCF, 0);
#define EMU_CHAN_CVCF_CURRVOL EMU_MKSUBREG(16, 16, EMU_CHAN_CVCF)
#define EMU_CHAN_CVCF_CURRFILTER EMU_MKSUBREG(16, 0, EMU_CHAN_CVCF)