EMU_A_SPDIF_SAMPLERATE
tmp = emuxki_read(sc, 0, EMU_A_SPDIF_SAMPLERATE) & 0xfffff1ff;
emuxki_write(sc, 0, EMU_A_SPDIF_SAMPLERATE, tmp | 0x400);
#define EMU_A2_SPDIF_SAMPLERATE EMU_MKSUBREG(3, 9, EMU_A_SPDIF_SAMPLERATE)