ENVY_MT_AC97_CMD
st = envy_mt_read_1(sc, ENVY_MT_AC97_CMD);
envy_mt_write_1(sc, ENVY_MT_AC97_CMD,
envy_mt_write_1(sc, ENVY_MT_AC97_CMD,
envy_mt_write_1(sc, ENVY_MT_AC97_CMD, ENVY_MT_AC97_CMD_RST);
envy_mt_write_1(sc, ENVY_MT_AC97_CMD, 0);