BA0_ACSDA
snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
result = snd_cs4281_peekBA0(chip, ac97_num ? BA0_ACSDA2 : BA0_ACSDA);
snd_cs46xx_peekBA0(chip, BA0_ACSDA + offset);
snd_cs46xx_peekBA0(chip, BA0_ACSDA),
result = snd_cs46xx_peekBA0(chip, BA0_ACSDA + offset);