1 // license:BSD-3-Clause 2 // copyright-holders:Jonathan Gevaryahu 3 #ifndef MAME_AUDIO_SOCRATES_H 4 #define MAME_AUDIO_SOCRATES_H 5 6 #pragma once 7 8 class socrates_snd_device : public device_t, 9 public device_sound_interface 10 { 11 public: 12 socrates_snd_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 13 14 void reg0_w(int data); 15 void reg1_w(int data); 16 void reg2_w(int data); 17 void reg3_w(int data); 18 void reg4_w(int data); 19 20 protected: 21 // device-level overrides 22 virtual void device_start() override; 23 24 // sound stream update overrides 25 virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override; 26 private: 27 void snd_clock(); 28 static const uint8_t s_volumeLUT[]; 29 30 // internal state 31 sound_stream * m_stream; 32 uint8_t m_freq[2]; // channel 1,2 frequencies 33 uint8_t m_vol[2]; // channel 1,2 volume 34 uint8_t m_enable[2]; // channel 1,2 enable 35 uint8_t m_channel3; // channel 3 weird register 36 uint8_t m_state[3]; // output states for channels 1,2,3 37 uint8_t m_accum[3]; // accumulators for channels 1,2,3 38 uint16_t m_DAC_output; // output 39 }; 40 41 DECLARE_DEVICE_TYPE(SOCRATES_SOUND, socrates_snd_device) 42 43 44 #endif // MAME_AUDIO_SOCRATES_H 45