SA3_MIC_MCV       283 dev/isa/ym.c   	atten = ((AUDIO_MAX_GAIN - vol) * (SA3_MIC_MCV + 1)) /
SA3_MIC_MCV       287 dev/isa/ym.c   	    (ym_read(sc, SA3_MIC_VOL) & ~SA3_MIC_MCV) | atten);