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// license:BSD-3-Clause
// copyright-holders:Bryan McPhail
#ifndef MAME_SOUND_K051649_H
#define MAME_SOUND_K051649_H
#pragma once
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> k051649_device
class k051649_device : public device_t,
public device_sound_interface
{
public:
k051649_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
void k051649_waveform_w(offs_t offset, u8 data);
u8 k051649_waveform_r(offs_t offset);
void k051649_volume_w(offs_t offset, u8 data);
void k051649_frequency_w(offs_t offset, u8 data);
void k051649_keyonoff_w(u8 data);
void k051649_test_w(u8 data);
u8 k051649_test_r(address_space &space);
void k052539_waveform_w(offs_t offset, u8 data);
u8 k052539_waveform_r(offs_t offset);
void scc_map(address_map &map) ATTR_COLD;
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
virtual void device_post_load() override;
virtual void device_clock_changed() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream) override;
private:
// parameters for a channel
struct sound_channel
{
sound_channel() :
counter(0),
clock(0),
frequency(0),
volume(0),
sample(0),
key(false)
{
std::fill(std::begin(waveram), std::end(waveram), 0);
}
u8 counter; // address counter for wavetable
u16 clock; // internal clock
u16 frequency; // frequency; result: (input clock / (32 * (frequency + 1)))
u8 volume; // volume
s16 sample; // latched sample data
bool key; // keyon/off
s8 waveram[32]; // 32 byte wavetable
};
sound_channel m_channel_list[5];
sound_stream *m_stream;
u8 m_test; // test register
};
DECLARE_DEVICE_TYPE(K051649, k051649_device)
#endif // MAME_SOUND_K051649_H
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