160 struct pulse {  struct
161 	bool len_counter_silenced;
162 	bool sweep_silenced;
163 	uint8_t value;
164 	uint8_t step;
165 	uint8_t volume;
166 	uint16_t counter;
167 	uint8_t len_counter;
168 	bool env_start;
169 	uint8_t env_counter;
170 	uint8_t env_period;
171 	bool sweep_reload;
172 	uint8_t sweep_counter;
427 	struct pulse *pulse;  in pulse_update()  local
712 	struct pulse *pulse;  in length_counter_tick()  local
751 	struct pulse *pulse;  in vol_env_tick()  local
839 	struct pulse *pulse;  in sweep_tick()  local