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#ifndef MAME_AUDIO_TX1_H
#define MAME_AUDIO_TX1_H
#pragma once
class tx1_sound_device : public device_t, public device_sound_interface
{
public:
tx1_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
~tx1_sound_device() {}
DECLARE_READ8_MEMBER( pit8253_r );
DECLARE_WRITE8_MEMBER( pit8253_w );
DECLARE_WRITE8_MEMBER( ay8910_a_w );
DECLARE_WRITE8_MEMBER( ay8910_b_w );
protected:
/*************************************
*
* 8253 Programmable Interval Timer
*
*************************************/
struct pit8253_state
{
union
{
#ifdef LSB_FIRST
struct { uint8_t LSB; uint8_t MSB; } as8bit;
#else
struct { uint8_t MSB; uint8_t LSB; } as8bit;
#endif
uint16_t val;
} counts[3];
int idx[3];
};
tx1_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;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
// internal state
sound_stream *m_stream;
uint32_t m_freq_to_step;
uint32_t m_step0;
uint32_t m_step1;
uint32_t m_step2;
pit8253_state m_pit8253;
uint8_t m_ay_outputa;
uint8_t m_ay_outputb;
stream_sample_t m_pit0;
stream_sample_t m_pit1;
stream_sample_t m_pit2;
double m_weights0[4];
double m_weights1[3];
double m_weights2[3];
int m_eng0[4];
int m_eng1[4];
int m_eng2[4];
int m_noise_lfsra;
int m_noise_lfsrb;
int m_noise_lfsrc;
int m_noise_lfsrd;
int m_noise_counter;
uint8_t m_ym1_outputa;
uint8_t m_ym2_outputa;
uint8_t m_ym2_outputb;
uint16_t m_eng_voltages[16];
};
class buggyboy_sound_device : public tx1_sound_device
{
public:
buggyboy_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
DECLARE_WRITE8_MEMBER( ym1_a_w );
DECLARE_WRITE8_MEMBER( ym2_a_w );
DECLARE_WRITE8_MEMBER( ym2_b_w );
protected:
// device-level overrides
virtual void device_start() override;
virtual void device_reset() override;
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;
};
DECLARE_DEVICE_TYPE(TX1_SOUND, tx1_sound_device)
DECLARE_DEVICE_TYPE(BUGGYBOY_SOUND, buggyboy_sound_device)
#endif // MAME_AUDIO_TX1_H
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