// license:BSD-3-Clause // copyright-holders:Jonathan Gevaryahu #ifndef MAME_AUDIO_SOCRATES_H #define MAME_AUDIO_SOCRATES_H #pragma once class socrates_snd_device : public device_t, public device_sound_interface { public: socrates_snd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); void reg0_w(int data); void reg1_w(int data); void reg2_w(int data); void reg3_w(int data); void reg4_w(int data); protected: // device-level overrides virtual void device_start() 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: void snd_clock(); static const uint8_t s_volumeLUT[]; // internal state sound_stream * m_stream; uint8_t m_freq[2]; // channel 1,2 frequencies uint8_t m_vol[2]; // channel 1,2 volume uint8_t m_enable[2]; // channel 1,2 enable uint8_t m_channel3; // channel 3 weird register uint8_t m_state[3]; // output states for channels 1,2,3 uint8_t m_accum[3]; // accumulators for channels 1,2,3 uint16_t m_DAC_output; // output }; DECLARE_DEVICE_TYPE(SOCRATES_SOUND, socrates_snd_device) #endif // MAME_AUDIO_SOCRATES_H