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#pragma once
#ifndef __SP0250_H__
#define __SP0250_H__
struct sp0250_interface {
void (*m_drq_callback)(device_t *device, int state);
};
class sp0250_device : public device_t,
public device_sound_interface,
public sp0250_interface
{
public:
sp0250_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~sp0250_device() {}
DECLARE_WRITE8_MEMBER( write );
UINT8 drq_r();
protected:
// device-level overrides
virtual void device_config_complete();
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);
private:
// internal state
INT16 m_amp;
UINT8 m_pitch;
UINT8 m_repeat;
int m_pcount, m_rcount;
int m_playing;
UINT32 m_RNG;
sound_stream * m_stream;
int m_voiced;
UINT8 m_fifo[15];
int m_fifo_pos;
void (*m_drq)(device_t *device, int state);
struct
{
INT16 F, B;
INT16 z1, z2;
} m_filter[6];
void load_values();
TIMER_CALLBACK_MEMBER( timer_tick );
};
extern const device_type SP0250;
#endif /* __SP0250_H__ */
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