// license:BSD-3-Clause // copyright-holders:Wilbert Pol /********************************************************************** NEC uPD1771 **********************************************************************/ #ifndef MAME_SOUND_UPD1771_H #define MAME_SOUND_UPD1771_H #define MCFG_UPD1771_ACK_HANDLER(_devcb) \ downcast(*device).set_ack_handler(DEVCB_##_devcb); /*************************************************************************** MACROS / CONSTANTS ***************************************************************************/ class upd1771c_device : public device_t, public device_sound_interface { public: upd1771c_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); template devcb_base &set_ack_handler(Object &&cb) { return m_ack_handler.set_callback(std::forward(cb)); } DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); WRITE_LINE_MEMBER( pcm_write ); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; private: static constexpr unsigned MAX_PACKET_SIZE = 0x8000; TIMER_CALLBACK_MEMBER(ack_callback); // internal state sound_stream *m_channel; devcb_write_line m_ack_handler; emu_timer *m_timer; uint8_t m_packet[MAX_PACKET_SIZE]; uint32_t m_index; uint8_t m_expected_bytes; uint8_t m_state;//0:silence, 1 noise, 2 tone uint8_t m_pc3; //tone uint8_t m_t_timbre; //[0; 7] uint8_t m_t_offset; //[0; 32] uint16_t m_t_period; //[0;255] uint8_t m_t_volume; //[0; 31] uint8_t m_t_tpos;//timbre pos uint16_t m_t_ppos;//period pos //noise wavetable LFSR uint8_t m_nw_timbre; //[0; 7] uint8_t m_nw_volume; //[0; 31] uint32_t m_nw_period; uint32_t m_nw_tpos; //timbre pos uint32_t m_nw_ppos; //period pos //noise pulse components uint8_t m_n_value[3]; //[0;1] uint16_t m_n_volume[3]; //[0; 31] uint32_t m_n_period[3]; uint32_t m_n_ppos[3]; //period pos }; DECLARE_DEVICE_TYPE(UPD1771C, upd1771c_device) #endif // MAME_SOUND_UPD1771_H