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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
#pragma once
#ifndef __HC55516_H__
#define __HC55516_H__
class hc55516_device : public device_t,
public device_sound_interface
{
public:
hc55516_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
hc55516_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
~hc55516_device() {}
/* sets the digit (0 or 1) */
void digit_w(int digit);
/* sets the clock state (0 or 1, clocked on the rising edge) */
void clock_w(int state);
/* returns whether the clock is currently LO or HI */
int clock_state_r();
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_reset();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
void start_common(UINT8 _shiftreg_mask, int _active_clock_hi);
// internal state
sound_stream *m_channel;
int m_active_clock_hi;
UINT8 m_shiftreg_mask;
UINT8 m_last_clock_state;
UINT8 m_digit;
UINT8 m_new_digit;
UINT8 m_shiftreg;
INT16 m_curr_sample;
INT16 m_next_sample;
UINT32 m_update_count;
double m_filter;
double m_integrator;
double m_charge;
double m_decay;
double m_leak;
inline int is_external_oscillator();
inline int is_active_clock_transition(int clock_state);
inline int current_clock_state();
void process_digit();
};
extern const device_type HC55516;
class mc3417_device : public hc55516_device
{
public:
mc3417_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
// device-level overrides
virtual void device_start();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
};
extern const device_type MC3417;
class mc3418_device : public hc55516_device
{
public:
mc3418_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
protected:
// device-level overrides
virtual void device_start();
// sound stream update overrides
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
};
extern const device_type MC3418;
#endif /* __HC55516_H__ */
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