BA0_ACOSV
snd_cs4281_pokeBA0(chip, BA0_ACOSV, BA0_ACOSV_SLV(3) | BA0_ACOSV_SLV(4));
snd_cs46xx_pokeBA0(chip, BA0_ACOSV, ACOSV_SLV3 | ACOSV_SLV4);
valid_slots = snd_cs46xx_peekBA0(chip, BA0_ACOSV);
snd_cs46xx_pokeBA0(chip, BA0_ACOSV, valid_slots);
BA0_ACOSV,
valid_slots = snd_cs46xx_peekBA0(chip, BA0_ACOSV);
snd_cs46xx_pokeBA0(chip, BA0_ACOSV, valid_slots);