1 // license:GPL-2.0+ 2 // copyright-holders:Peter Trauner 3 /***************************************************************************** 4 * 5 * svis_snd.h 6 * 7 ****************************************************************************/ 8 9 #ifndef MAME_AUDIO_SVIS_SND_H 10 #define MAME_AUDIO_SVIS_SND_H 11 12 #pragma once 13 14 15 // ======================> svision_sound_device 16 17 class svision_sound_device : public device_t, public device_sound_interface 18 { 19 public: 20 template <typename T, typename U> svision_sound_device(const machine_config & mconfig,const char * tag,device_t * owner,uint32_t clock,T && cpu_tag,U && region_tag)21 svision_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock, T &&cpu_tag, U &®ion_tag) 22 : svision_sound_device(mconfig, tag, owner, clock) 23 { 24 m_maincpu.set_tag(std::forward<T>(cpu_tag)); 25 m_cartrom.set_tag(std::forward<U>(region_tag)); 26 } 27 28 svision_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); 29 30 // configuration irq_cb()31 auto irq_cb() { return m_irq_cb.bind(); } 32 33 void sounddma_w(offs_t offset, uint8_t data); 34 void noise_w(offs_t offset, uint8_t data); 35 36 void sound_decrement(); 37 void soundport_w(int which, int offset, int data); 38 39 protected: 40 // device-level overrides 41 virtual void device_start() override; 42 43 // sound stream update overrides 44 virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override; 45 46 private: 47 struct NOISE 48 { 49 enum class Type 50 { 51 Type7Bit = 0, 52 Type14Bit = 1 53 }; 54 NOISENOISE55 NOISE() : reg{ 0, 0, 0 } { } 56 57 uint8_t reg[3]; 58 int on = 0, right = 0, left = 0, play = 0; 59 Type type = Type::Type7Bit; 60 int state = 0; 61 int volume = 0; 62 int count = 0; 63 double step = 0, pos = 0; 64 int value = 0; // currently simple random function 65 }; 66 67 struct DMA 68 { DMADMA69 DMA() : reg{ 0, 0, 0, 0, 0 } { } 70 71 uint8_t reg[5]; 72 int on = 0, right = 0, left = 0; 73 int ca14to16 = 0; 74 int start = 0, size = 0; 75 double pos = 0, step = 0; 76 int finished = 0; 77 }; 78 79 struct CHANNEL 80 { CHANNELCHANNEL81 CHANNEL() : reg{ 0, 0, 0, 0 } { } 82 83 uint8_t reg[4]; 84 int on = 0; 85 int waveform = 0, volume = 0; 86 int pos = 0; 87 int size = 0; 88 int count = 0; 89 }; 90 91 devcb_write_line m_irq_cb; 92 93 required_device<cpu_device> m_maincpu; 94 required_memory_bank m_cartrom; 95 96 sound_stream *m_mixer_channel; 97 DMA m_dma; 98 NOISE m_noise; 99 CHANNEL m_channel[2]; 100 }; 101 102 DECLARE_DEVICE_TYPE(SVISION_SND, svision_sound_device) 103 104 #endif // MAME_AUDIO_SVIS_SND_H 105