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

    bsmt2000.h

    BSMT2000 device emulator.

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

#ifndef MAME_SOUND_BSMT2000_H
#define MAME_SOUND_BSMT2000_H

#pragma once

#include "cpu/tms32010/tms32010.h"


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


// ======================> bsmt2000_device

class bsmt2000_device : public device_t,
						public device_sound_interface,
						public device_rom_interface
{
public:
	typedef device_delegate<void ()> ready_callback;

	// construction/destruction
	bsmt2000_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

	// inline configuration helpers
	template <typename... T> void set_ready_callback(T &&... args) { m_ready_callback.set(std::forward<T>(args)...); }

	// public interface
	uint16_t read_status();
	void write_reg(uint16_t data);
	void write_data(uint16_t data);

	void tms_io_map(address_map &map);
	void tms_program_map(address_map &map);
protected:
	// device-level overrides
	virtual const tiny_rom_entry *device_rom_region() 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;

	// device_sound_interface overrides
	virtual void sound_stream_update(sound_stream &stream, stream_sample_t **inputs, stream_sample_t **outputs, int samples) override;

	// device_rom_interface overrides
	virtual void rom_bank_updated() override;

public:
	// internal TMS I/O callbacks
	DECLARE_READ16_MEMBER( tms_register_r );
	DECLARE_READ16_MEMBER( tms_data_r );
	DECLARE_READ16_MEMBER( tms_rom_r );
	DECLARE_WRITE16_MEMBER( tms_rom_addr_w );
	DECLARE_WRITE16_MEMBER( tms_rom_bank_w );
	DECLARE_WRITE16_MEMBER( tms_left_w );
	DECLARE_WRITE16_MEMBER( tms_right_w );

private:
	// timers
	enum
	{
		TIMER_ID_RESET,
		TIMER_ID_REG_WRITE,
		TIMER_ID_DATA_WRITE
	};

	// configuration state
	ready_callback              m_ready_callback;

	// internal state
	sound_stream *              m_stream;
	required_device<tms32015_device> m_cpu;
	uint16_t                      m_register_select;
	uint16_t                      m_write_data;
	uint16_t                      m_rom_address;
	uint16_t                      m_rom_bank;
	int16_t                       m_left_data;
	int16_t                       m_right_data;
	bool                        m_write_pending;

	DECLARE_READ_LINE_MEMBER( tms_write_pending_r );
};


// device type definition
DECLARE_DEVICE_TYPE(BSMT2000, bsmt2000_device)

#endif // MAME_SOUND_BSMT2000_H