void asteroid_sound_init();
void asteroid_sound_exit();
void asteroid_sound_reset();
void asteroid_sound_update(INT16 *buffer, INT32 length);
void asteroid_explode_w(UINT8 data);
void asteroid_thump_w(UINT8 data);
void asteroid_sounds_w(UINT16 offset, UINT8 data);
void astdelux_sound_update(INT16 *buffer, INT32 length);
void astdelux_sounds_w(UINT8 data);

