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// license:GPL-2.0+
// copyright-holders:Peter Trauner
/*****************************************************************************
*
* includes/gamate.h
*
****************************************************************************/
#ifndef GAMATE_H_
#define GAMATE_H_
#include "cpu/m6502/m6502.h"
#include "bus/generic/slot.h"
#include "bus/generic/carts.h"
// ======================> gamate_sound_device
class gamate_sound_device : public device_t, public device_sound_interface
{
public:
gamate_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~gamate_sound_device() { }
DECLARE_WRITE8_MEMBER( device_w );
DECLARE_READ8_MEMBER( device_r );
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);
private:
static const int DAConverter[];
static int Value2Volume(int volume) { return DAConverter[volume]*1; }
sound_stream *m_mixer_channel;
struct Tone
{
Tone() :
envelope_on(false),
level(false),
tone(false), full_cycle(false),
volume(0),
pos(0),
size(0)
{}
bool envelope_on, level;
bool tone/*else noise*/, full_cycle/* else square signal/pulse */;
int volume;
int pos, size;
};
enum
{
Right,
Left,
Both
};
Tone m_channels[3];
struct Noise
{
Noise():
state(1),
level(false),
step(0.0),
pos(0.0)
{}
int state;
bool level;
double step, pos;
} noise;
struct Envelope
{
Envelope():
control(0),
index(0),
first(false)
{}
int control;
int index;
bool first;
double step, pos;
} envelope;
UINT8 reg[14];
};
extern const device_type GAMATE_SND;
#endif /* GAMATE_H_ */
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