// 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, const XTAL &clock); // write only void c6280_w(offs_t offset, uint8_t data); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual void device_clock_changed() override; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, std::vector const &inputs, std::vector &outputs) override; private: struct channel { u16 frequency; u8 control; u8 balance; u8 waveform[32]; u8 index; s16 dda; u8 noise_control; s32 noise_counter; u32 noise_frequency; u32 noise_seed; s32 tick; }; // internal state sound_stream *m_stream; u8 m_select; u8 m_balance; u8 m_lfo_frequency; u8 m_lfo_control; channel m_channel[8]; s16 m_volume_table[32]; }; DECLARE_DEVICE_TYPE(C6280, c6280_device) #endif // MAME_SOUND_C6280_H