YM_POWER_CODEC_R
parts |= YM_POWER_CODEC_R | YM_POWER_CODEC_AD;
parts = YM_POWER_CODEC_P | YM_POWER_CODEC_R |
parts &= ~(YM_POWER_CODEC_P | YM_POWER_CODEC_R);
if ((on_blocks & YM_POWER_CODEC_R) == 0)
parts |= YM_POWER_CODEC_R;
parts |= YM_POWER_CODEC_P | YM_POWER_CODEC_R;
YM_POWER_CODEC_P | YM_POWER_CODEC_R |
(YM_POWER_CODEC_P | YM_POWER_CODEC_R | YM_POWER_CODEC_CTL)