taglinefilesource code
mic242drivers/sound/pas2_mixer.c|| l.mic & ~0x7)
mic251drivers/sound/pas2_mixer.cpas_mixer_set (SOUND_MIXER_MIC, ((l.mic * 100 + 3) / 7) | (((l.mic * 100 + 3) / 7) << 8));
mic348drivers/sound/pas2_mixer.cl.mic = ((getmixer (SOUND_MIXER_MIC, P_M_MV508_LEFT) * 7) + 50) / 100;  /* Microphone */
mic583drivers/sound/soundcard.hS_BYTE mic;      /* Microphone level */