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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
/***************************************************************************

    williams.h

    Functions to emulate general the various Williams/Midway sound cards.

****************************************************************************/

#include "emu.h"
#include "machine/6821pia.h"
#include "cpu/m6809/m6809.h"
#include "sound/2151intf.h"
#include "sound/okim6295.h"
#include "sound/hc55516.h"
#include "sound/dac.h"



//**************************************************************************
//  GLOBAL VARIABLES
//**************************************************************************

extern const device_type WILLIAMS_NARC_SOUND;
extern const device_type WILLIAMS_CVSD_SOUND;
extern const device_type WILLIAMS_ADPCM_SOUND;



//**************************************************************************
//  DEVICE CONFIGURATION MACROS
//**************************************************************************

#define MCFG_WILLIAMS_NARC_SOUND_ADD(_tag) \
	MCFG_DEVICE_ADD(_tag, WILLIAMS_NARC_SOUND, 0)
#define MCFG_WILLIAMS_CVSD_SOUND_ADD(_tag) \
	MCFG_DEVICE_ADD(_tag, WILLIAMS_CVSD_SOUND, 0)
#define MCFG_WILLIAMS_ADPCM_SOUND_ADD(_tag) \
	MCFG_DEVICE_ADD(_tag, WILLIAMS_ADPCM_SOUND, 0)


//**************************************************************************
//  TYPE DEFINITIONS
//**************************************************************************

// ======================> williams_cvsd_sound_device

class williams_cvsd_sound_device :  public device_t,
									public device_mixer_interface
{
public:
	// construction/destruction
	williams_cvsd_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

	// read/write
	DECLARE_WRITE16_MEMBER(write);
	DECLARE_WRITE_LINE_MEMBER(reset_write);

	// internal communications
	DECLARE_WRITE8_MEMBER(bank_select_w);
	DECLARE_WRITE8_MEMBER(talkback_w);
	DECLARE_WRITE8_MEMBER(cvsd_digit_clock_clear_w);
	DECLARE_WRITE8_MEMBER(cvsd_clock_set_w);
	DECLARE_WRITE_LINE_MEMBER(ym2151_irq_w);
	DECLARE_WRITE_LINE_MEMBER(pia_irqa);
	DECLARE_WRITE_LINE_MEMBER(pia_irqb);

protected:
	// device-level overrides
	virtual machine_config_constructor device_mconfig_additions() const;
	virtual void device_start();
	virtual void device_reset();
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);

private:
	// devices
	required_device<m6809e_device> m_cpu;
	required_device<pia6821_device> m_pia;
	required_device<hc55516_device> m_hc55516;

	// internal state
	UINT8 m_talkback;
};


// ======================> williams_narc_sound_device

class williams_narc_sound_device :  public device_t,
									public device_mixer_interface
{
public:
	// construction/destruction
	williams_narc_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

	// read/write
	DECLARE_READ16_MEMBER(read);
	DECLARE_WRITE16_MEMBER(write);
	DECLARE_WRITE_LINE_MEMBER(reset_write);

	// internal communications
	DECLARE_WRITE8_MEMBER(master_bank_select_w);
	DECLARE_WRITE8_MEMBER(slave_bank_select_w);
	DECLARE_READ8_MEMBER(command_r);
	DECLARE_WRITE8_MEMBER(command2_w);
	DECLARE_READ8_MEMBER(command2_r);
	DECLARE_WRITE8_MEMBER(master_talkback_w);
	DECLARE_WRITE8_MEMBER(master_sync_w);
	DECLARE_WRITE8_MEMBER(slave_talkback_w);
	DECLARE_WRITE8_MEMBER(slave_sync_w);
	DECLARE_WRITE8_MEMBER(cvsd_digit_clock_clear_w);
	DECLARE_WRITE8_MEMBER(cvsd_clock_set_w);
	DECLARE_WRITE_LINE_MEMBER(ym2151_irq_w);

protected:
	// device-level overrides
	virtual machine_config_constructor device_mconfig_additions() const;
	virtual void device_start();
	virtual void device_reset();
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);

private:
	// timer IDs
	enum
	{
		TID_MASTER_COMMAND,
		TID_SLAVE_COMMAND,
		TID_SYNC_CLEAR
	};

	// devices
	required_device<m6809e_device> m_cpu0;
	required_device<m6809e_device> m_cpu1;
	required_device<hc55516_device> m_hc55516;

	// internal state
	UINT8 m_latch;
	UINT8 m_latch2;
	UINT8 m_talkback;
	UINT8 m_audio_sync;
	UINT8 m_sound_int_state;
};


// ======================> williams_adpcm_sound_device

class williams_adpcm_sound_device : public device_t,
									public device_mixer_interface
{
public:
	// construction/destruction
	williams_adpcm_sound_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

	// read/write
	DECLARE_WRITE16_MEMBER(write);
	DECLARE_WRITE_LINE_MEMBER(reset_write);
	DECLARE_READ_LINE_MEMBER(irq_read);

	// internal communications
	DECLARE_WRITE8_MEMBER(bank_select_w);
	DECLARE_WRITE8_MEMBER(oki6295_bank_select_w);
	DECLARE_READ8_MEMBER(command_r);
	DECLARE_WRITE8_MEMBER(talkback_w);
	DECLARE_WRITE_LINE_MEMBER(ym2151_irq_w);

protected:
	// timer IDs
	enum
	{
		TID_COMMAND,
		TID_IRQ_CLEAR
	};

	// device-level overrides
	virtual machine_config_constructor device_mconfig_additions() const;
	virtual void device_start();
	virtual void device_reset();
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);

private:
	// devices
	required_device<m6809e_device> m_cpu;

	// internal state
	UINT8 m_latch;
	UINT8 m_talkback;
	UINT8 m_sound_int_state;
};