// license:BSD-3-Clause // copyright-holders:Charles MacDonald #ifndef MAME_SOUND_C6280_H #define MAME_SOUND_C6280_H #pragma once class c6280_device : public device_t, public device_sound_interface { public: static constexpr feature_type imperfect_features() { return feature::SOUND; } // Incorrect / Not verified noise / LFO output c6280_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); // write only DECLARE_WRITE8_MEMBER( c6280_w ); protected: // device-level overrides virtual void device_start() override; virtual void device_clock_changed() 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: struct channel { uint16_t m_frequency; uint8_t m_control; uint8_t m_balance; uint8_t m_waveform[32]; uint8_t m_index; int16_t m_dda; uint8_t m_noise_control; int32_t m_noise_counter; uint32_t m_counter; int32_t m_tick; }; // internal state sound_stream *m_stream; uint8_t m_select; uint8_t m_balance; uint8_t m_lfo_frequency; uint8_t m_lfo_control; channel m_channel[8]; int16_t m_volume_table[32]; }; DECLARE_DEVICE_TYPE(C6280, c6280_device) #endif // MAME_SOUND_C6280_H