YM_POWER_CODEC_CTL
if (on_blocks & ~parts & YM_POWER_CODEC_CTL)
if (parts & YM_POWER_CODEC_CTL) {
if (parts & YM_POWER_CODEC_CTL)
ym_power_ctl(sc, YM_POWER_CODEC_CTL, 1);
ym_power_ctl(sc, YM_POWER_CODEC_CTL, 0);
ym_power_ctl(sc, YM_POWER_CODEC_CTL, 1);
ym_power_ctl(sc, YM_POWER_CODEC_CTL, 0);
#define YM_POWER_CODEC_PSEUDO (YM_POWER_CODEC_CTL | YM_POWER_EXT_SRC)
(YM_POWER_CODEC_P | YM_POWER_CODEC_R | YM_POWER_CODEC_CTL)