EMU_CHAN_VTFT
emuxki_chan_write(&card->config, i, EMU_CHAN_VTFT, 0xffff);
emuxki_chan_write(&card->config, i, EMU_CHAN_VTFT, 0);
#define EMU_CHAN_VTFT_VOLUMETARGET EMU_MKSUBREG(16, 16, EMU_CHAN_VTFT)
#define EMU_CHAN_VTFT_FILTERTARGET EMU_MKSUBREG(16, 0, EMU_CHAN_VTFT)