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// license: BSD-3-Clause
// copyright-holders: Devin Acker
#ifndef MAME_SOUND_CF61909_H
#define MAME_SOUND_CF61909_H
#pragma once
#include "machine/clock.h"
#include "dirom.h"
#include <array>
class cf61909_device : public device_t, public device_sound_interface, public device_rom_interface<18>
{
public:
cf61909_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock = 0);
u8 read(offs_t offset);
void write(offs_t offset, u8 data);
int sync_r() { return m_sample_clock->signal_r(); }
protected:
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_clock_changed() override;
virtual void sound_stream_update(sound_stream &stream) override;
virtual void rom_bank_pre_change() override;
private:
/*
* Jaminator patent specifies 11.127 kHz sample rate, but the real thing sounds like it has 4x
* oversampling. The sync clock output (m_sample_clock) seems to fluctuate quite a bit, but
* 11.127 kHz is pretty close to average.
*/
static constexpr unsigned CLOCKS_PER_SAMPLE = 247; // based on 11 MHz clock
struct voice_t
{
u8 m_regs[16] = {0};
u32 m_start = 0;
u16 m_loop = 0;
u16 m_pos = 0;
u16 m_pitch = 0;
u16 m_pitch_counter = 0;
u8 m_volume = 0;
};
std::array<voice_t, 8> m_voice;
u32 m_data_offset;
required_device<clock_device> m_sample_clock;
sound_stream *m_stream;
};
DECLARE_DEVICE_TYPE(CF61909, cf61909_device)
#endif // MAME_SOUND_CF61909_H
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