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// license:BSD-3-Clause
// copyright-holders:Wilbert Pol
#pragma once
#ifndef __T6W28_H__
#define __T6W28_H__
class t6w28_device : public device_t,
public device_sound_interface
{
public:
t6w28_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_WRITE8_MEMBER( write );
void set_enable( bool enable );
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);
void set_gain(int gain);
private:
sound_stream *m_channel;
int m_sample_rate;
int m_vol_table[16]; /* volume table */
INT32 m_register[16]; /* registers */
INT32 m_last_register[2]; /* last register written */
INT32 m_volume[8]; /* volume of voice 0-2 and noise */
UINT32 m_rng[2]; /* noise generator */
INT32 m_noise_mode[2]; /* active noise mode */
INT32 m_feedback_mask; /* mask for feedback */
INT32 m_whitenoise_taps; /* mask for white noise taps */
INT32 m_whitenoise_invert; /* white noise invert flag */
INT32 m_period[8];
INT32 m_count[8];
INT32 m_output[8];
bool m_enabled;
};
extern const device_type T6W28;
#endif /* __T6W28_H__ */
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