// 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() override; 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; 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() override; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; }; 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() override; // sound stream update overrides virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override; }; extern const device_type MC3418; #endif /* __HC55516_H__ */