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#pragma once

#ifndef __M5074X_H__
#define __M5074X_H__

#include "m740.h"

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

#define MCFG_M5074X_PORT0_CALLBACKS(_read, _write) \
	downcast<m5074x_device *>(device)->set_p0_callbacks(DEVCB2_##_read, DEVCB2_##_write);

#define MCFG_M5074X_PORT1_CALLBACKS(_read, _write) \
	downcast<m5074x_device *>(device)->set_p1_callbacks(DEVCB2_##_read, DEVCB2_##_write);

#define MCFG_M5074X_PORT2_CALLBACKS(_read, _write) \
	downcast<m5074x_device *>(device)->set_p2_callbacks(DEVCB2_##_read, DEVCB2_##_write);

#define MCFG_M5074X_PORT3_CALLBACKS(_read, _write) \
	downcast<m5074x_device *>(device)->set_p3_callbacks(DEVCB2_##_read, DEVCB2_##_write);

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

// ======================> m5074x_device

class m5074x_device :  public m740_device
{
	friend class m50740_device;
	friend class m50741_device;

	enum
	{
		M5074X_INT1_LINE = INPUT_LINE_IRQ0,

		M5074X_SET_OVERFLOW = M740_SET_OVERFLOW
	};

	enum
	{
		TIMER_1 = 0,
		TIMER_2,
		TIMER_X,

		NUM_TIMERS
	};

public:
	// construction/destruction
	m5074x_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, address_map_constructor internal_map, const char *shortname, const char *source);

	const address_space_config m_program_config;

	template<class _read, class _write> void set_p0_callbacks(_read rd, _write wr) 
	{
		read_p0.set_callback(rd);
		write_p0.set_callback(wr);
	}

	template<class _read, class _write> void set_p1_callbacks(_read rd, _write wr) 
	{
		read_p1.set_callback(rd);
		write_p1.set_callback(wr);
	}

	template<class _read, class _write> void set_p2_callbacks(_read rd, _write wr) 
	{
		read_p2.set_callback(rd);
		write_p2.set_callback(wr);
	}

	template<class _read, class _write> void set_p3_callbacks(_read rd, _write wr) 
	{
		read_p3.set_callback(rd);
		write_p3.set_callback(wr);
	}

	devcb2_read8  read_p0, read_p1, read_p2, read_p3;
	devcb2_write8 write_p0, write_p1, write_p2, write_p3;

    DECLARE_READ8_MEMBER(ports_r);
    DECLARE_WRITE8_MEMBER(ports_w);
    DECLARE_READ8_MEMBER(tmrirq_r);
    DECLARE_WRITE8_MEMBER(tmrirq_w);

	bool are_port_bits_output(UINT8 port, UINT8 mask) { return ((m_ddrs[port] & mask) == mask) ? true : false; }

protected:
	// device-level overrides
	virtual void device_start();
	virtual void device_reset();
	virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
	virtual void execute_set_input(int inputnum, int state);
	virtual const address_space_config *memory_space_config(address_spacenum spacenum) const { return (spacenum == AS_PROGRAM) ? &m_program_config : NULL; }

	void send_port(address_space &space, UINT8 offset, UINT8 data);
    UINT8 read_port(UINT8 offset);

	void recalc_irqs();
	void recalc_timer(int timer);

    UINT8 m_ports[6], m_ddrs[6];
	UINT8 m_intctrl, m_tmrctrl;
	UINT8 m_tmr12pre, m_tmr1, m_tmr2, m_tmrxpre, m_tmrx;
	UINT8 m_tmr1latch, m_tmr2latch, m_tmrxlatch;
	UINT8 m_last_all_ints;

private:
	emu_timer *m_timers[NUM_TIMERS];
};

class m50740_device : public m5074x_device 
{
public:
	m50740_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
	m50740_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);

protected:

private:
};

class m50741_device : public m5074x_device 
{
public:
	m50741_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
	m50741_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);

protected:

private:
};

extern const device_type M50740;
extern const device_type M50741;

#endif