SB_DSP20_PCM_DEV 467 sound/isa/sb/sb_mixer.c SB_SINGLE("PCM Playback Volume", SB_DSP20_PCM_DEV, 1, 3); SB_DSP20_PCM_DEV 859 sound/isa/sb/sb_mixer.c SB_DSP20_PCM_DEV,