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// license:LGPL-2.1+
// copyright-holders:Angelo Salese
/***************************************************************************

Nichibutsu 1412M2 device emulation

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

#ifndef MAME_MACHINE_NB1412M2_H
#define MAME_MACHINE_NB1412M2_H

#pragma once



//**************************************************************************
//  INTERFACE CONFIGURATION MACROS
//**************************************************************************

#define MCFG_NB1412M2_ADD(tag, freq) \
		MCFG_DEVICE_ADD((tag), NB1412M2, (freq))

#define MCFG_NB1412M2_DAC_CB(_devcb) \
	devcb = &downcast<nb1412m2_device &>(*device).set_dac_callback(DEVCB_##_devcb);


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

// ======================> nb1412m2_device

class nb1412m2_device : public device_t, public device_memory_interface
{
public:
	// construction/destruction
	nb1412m2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// I/O operations
	DECLARE_WRITE8_MEMBER( command_w );
	DECLARE_WRITE8_MEMBER( data_w );
	DECLARE_READ8_MEMBER( data_r );

	DECLARE_WRITE8_MEMBER( rom_address_w );
	DECLARE_READ8_MEMBER( rom_decrypt_r );
	DECLARE_WRITE8_MEMBER( rom_op_w );
	DECLARE_WRITE8_MEMBER( rom_adjust_w );
	DECLARE_READ8_MEMBER( timer_r );
	DECLARE_WRITE8_MEMBER( timer_w );
	DECLARE_WRITE8_MEMBER( timer_ack_w );
	DECLARE_READ8_MEMBER( const90_r );
	DECLARE_WRITE8_MEMBER( const90_w );
	DECLARE_WRITE8_MEMBER( dac_address_w );
	DECLARE_WRITE8_MEMBER( dac_timer_w );

	template <class Object> devcb_base &set_dac_callback(Object &&cb)
	{ return m_dac_cb.set_callback(std::forward<Object>(cb)); }


	void nb1412m2_map(address_map &map);
protected:
	// device-level overrides
//  virtual void device_validity_check(validity_checker &valid) const override;
//  virtual void device_add_mconfig(machine_config &config) override;
	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr) override;
	virtual space_config_vector memory_space_config() const override;

private:
	uint8_t m_command;
	uint16_t m_rom_address;
	uint16_t m_adj_address;
	uint16_t m_dac_start_address, m_dac_current_address;
	int m_dac_frequency;
	uint8_t m_rom_op;
	uint8_t m_const90;
	bool m_timer_reg;
	bool m_dac_playback;
	const address_space_config m_space_config;
	emu_timer *m_timer;
	emu_timer *m_dac_timer;

	required_region_ptr<uint8_t> m_data;
	devcb_write8 m_dac_cb;

	static const device_timer_id TIMER_MAIN = 1;
	static const device_timer_id TIMER_DAC = 2;
};


// device type definition
DECLARE_DEVICE_TYPE(NB1412M2, nb1412m2_device)



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


#endif // MAME_MACHINE_NB1412M2_H