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// license:GPL-2.0+
// copyright-holders:Peter Trauner
#ifndef MAME_SOUND_LYNX_H
#define MAME_SOUND_LYNX_H
#pragma once
class lynx_sound_device : public device_t, public device_sound_interface
{
public:
typedef device_delegate<void (void)> timer_delegate;
lynx_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
u8 read(offs_t offset);
void write(offs_t offset, u8 data);
void count_down(int nr);
template <typename... T> void set_timer_delegate(T &&... args) { m_timer_delegate.set(std::forward<T>(args)...); }
protected:
struct LYNX_AUDIO {
struct {
//bool reset_done() const { return BIT(control1, 6); } // Reset timer done flag (not implemented)
bool integrate_mode() const { return BIT(control1, 5); } // Integrate mode
bool reload_en() const { return BIT(control1, 4); } // Reload enable
bool count_en() const { return BIT(control1, 3); } // Count enable
u8 timer_clock() const { return BIT(control1, 0, 3); } // Timer clock
bool linked() const { return timer_clock() == 0b111; } // Linked timer?
//bool last_clock() const { return BIT(control2, 2); } // Last clock (not implemented)
//bool borrow_in() const { return BIT(control2, 1); } // Borrow in (not implemented)
//bool borrow_out() const { return BIT(control2, 0); } // Borrow out (not implemented)
s8 volume = 0;
u8 feedback = 0;
s8 output = 0;
u8 shifter = 0;
u8 bakup = 0;
u8 control1 = 0;
u8 counter = 0;
u8 control2 = 0;
} reg;
u8 attenuation = 0;
u16 mask = 0; // 12-bit
u16 shifter = 0; // 12-bit
s16 ticks = 0;
s16 count = 0;
};
lynx_sound_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);
// 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<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
void reset_channel(LYNX_AUDIO *channel);
void shift(int chan_nr);
void execute(int chan_nr);
void init();
void register_save();
sound_stream *m_mixer_channel;
timer_delegate m_timer_delegate; // this calls lynx_timer_count_down from the driver state
std::unique_ptr<int[]> m_shift_mask;
std::unique_ptr<int[]> m_shift_xor;
u8 m_attenuation_enable = 0;
u8 m_master_enable = 0;
LYNX_AUDIO m_audio[4];
};
class lynx2_sound_device : public lynx_sound_device
{
public:
lynx2_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, std::vector<read_stream_view> const &inputs, std::vector<write_stream_view> &outputs) override;
};
DECLARE_DEVICE_TYPE(LYNX_SND, lynx_sound_device)
DECLARE_DEVICE_TYPE(LYNX2_SND, lynx2_sound_device)
#endif // MAME_SOUND_LYNX_H
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