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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/**********************************************************************************************
*
* Ensoniq ES5505/6 driver
* by Aaron Giles
*
**********************************************************************************************/
#pragma once
#ifndef __ES5506_H__
#define __ES5506_H__
#define MAKE_WAVS 0
struct es5505_interface
{
const char * m_es5505_region0; /* memory region where the sample ROM lives */
const char * m_es5505_region1; /* memory region where the sample ROM lives */
int m_es5505_channels; /* number of output channels: 1 .. 4 */
devcb_write_line m_es5505_irq_callback; /* irq callback */
devcb_read16 m_es5505_read_port; /* input port read */
};
struct es5506_interface
{
const char * m_region0; /* memory region where the sample ROM lives */
const char * m_region1; /* memory region where the sample ROM lives */
const char * m_region2; /* memory region where the sample ROM lives */
const char * m_region3; /* memory region where the sample ROM lives */
int m_channels; /* number of output channels: 1 .. 6 */
devcb_write_line m_irq_callback; /* irq callback */
devcb_read16 m_read_port; /* input port read */
};
/* struct describing a single playing voice */
struct es550x_voice
{
es550x_voice():
control(0),
freqcount(0),
start(0),
lvol(0),
end(0),
lvramp(0),
accum(0),
rvol(0),
rvramp(0),
ecount(0),
k2(0),
k2ramp(0),
k1(0),
k1ramp(0),
o4n1(0),
o3n1(0),
o3n2(0),
o2n1(0),
o2n2(0),
o1n1(0),
exbank(0),
index(0),
filtcount(0),
accum_mask(0) {}
/* external state */
UINT32 control; /* control register */
UINT32 freqcount; /* frequency count register */
UINT32 start; /* start register */
UINT32 lvol; /* left volume register */
UINT32 end; /* end register */
UINT32 lvramp; /* left volume ramp register */
UINT32 accum; /* accumulator register */
UINT32 rvol; /* right volume register */
UINT32 rvramp; /* right volume ramp register */
UINT32 ecount; /* envelope count register */
UINT32 k2; /* k2 register */
UINT32 k2ramp; /* k2 ramp register */
UINT32 k1; /* k1 register */
UINT32 k1ramp; /* k1 ramp register */
INT32 o4n1; /* filter storage O4(n-1) */
INT32 o3n1; /* filter storage O3(n-1) */
INT32 o3n2; /* filter storage O3(n-2) */
INT32 o2n1; /* filter storage O2(n-1) */
INT32 o2n2; /* filter storage O2(n-2) */
INT32 o1n1; /* filter storage O1(n-1) */
UINT32 exbank; /* external address bank */
/* internal state */
UINT8 index; /* index of this voice */
UINT8 filtcount; /* filter count */
UINT32 accum_mask;
};
class es550x_device : public device_t,
public device_sound_interface
{
public:
es550x_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);
~es550x_device() {}
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void device_stop();
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);
// internal state
sound_stream *m_stream; /* which stream are we using */
int m_sample_rate; /* current sample rate */
UINT16 * m_region_base[4]; /* pointer to the base of the region */
UINT32 m_write_latch; /* currently accumulated data for write */
UINT32 m_read_latch; /* currently accumulated data for read */
UINT32 m_master_clock; /* master clock frequency */
devcb_resolved_write_line m_irq_callback_func; /* IRQ callback */
devcb_resolved_read16 m_port_read_func; /* input port read */
UINT8 m_current_page; /* current register page */
UINT8 m_active_voices; /* number of active voices */
UINT8 m_mode; /* MODE register */
UINT8 m_wst; /* W_ST register */
UINT8 m_wend; /* W_END register */
UINT8 m_lrend; /* LR_END register */
UINT8 m_irqv; /* IRQV register */
es550x_voice m_voice[32]; /* the 32 voices */
INT32 * m_scratch;
INT16 * m_ulaw_lookup;
UINT16 * m_volume_lookup;
#if MAKE_WAVS
void * m_wavraw; /* raw waveform */
#endif
FILE *m_eslog;
void update_irq_state();
void update_internal_irq_state();
void compute_tables();
void generate_dummy(es550x_voice *voice, UINT16 *base, INT32 *lbuffer, INT32 *rbuffer, int samples);
void generate_ulaw(es550x_voice *voice, UINT16 *base, INT32 *lbuffer, INT32 *rbuffer, int samples);
void generate_pcm(es550x_voice *voice, UINT16 *base, INT32 *lbuffer, INT32 *rbuffer, int samples);
};
class es5506_device : public es550x_device,
public es5506_interface
{
public:
es5506_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~es5506_device() {}
DECLARE_READ8_MEMBER( read );
DECLARE_WRITE8_MEMBER( write );
void voice_bank_w(int voice, int bank);
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);
void generate_samples(INT32 **outputs, int offset, int samples);
private:
inline void reg_write_low(es550x_voice *voice, offs_t offset, UINT32 data);
inline void reg_write_high(es550x_voice *voice, offs_t offset, UINT32 data);
inline void reg_write_test(es550x_voice *voice, offs_t offset, UINT32 data);
inline UINT32 reg_read_low(es550x_voice *voice, offs_t offset);
inline UINT32 reg_read_high(es550x_voice *voice, offs_t offset);
inline UINT32 reg_read_test(es550x_voice *voice, offs_t offset);
};
extern const device_type ES5506;
class es5505_device : public es550x_device,
public es5505_interface
{
public:
es5505_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
DECLARE_READ16_MEMBER( read );
DECLARE_WRITE16_MEMBER( write );
void voice_bank_w(int voice, int bank);
protected:
// device-level overrides
virtual void device_config_complete();
virtual void device_start();
virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples);
void generate_samples(INT32 **outputs, int offset, int samples);
private:
// internal state
inline void reg_write_low(es550x_voice *voice, offs_t offset, UINT16 data, UINT16 mem_mask);
inline void reg_write_high(es550x_voice *voice, offs_t offset, UINT16 data, UINT16 mem_mask);
inline void reg_write_test(es550x_voice *voice, offs_t offset, UINT16 data, UINT16 mem_mask);
inline UINT16 reg_read_low(es550x_voice *voice, offs_t offset);
inline UINT16 reg_read_high(es550x_voice *voice, offs_t offset);
inline UINT16 reg_read_test(es550x_voice *voice, offs_t offset);
};
extern const device_type ES5505;
#endif /* __ES5506_H__ */
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