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// license:BSD-3-Clause
// copyright-holders:Nathan Woods
/***************************************************************************

    dgnalpha.h

    Dragon Alpha

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

#ifndef MAME_INCLUDES_DGNALPHA_H
#define MAME_INCLUDES_DGNALPHA_H

#pragma once


#include "includes/dragon.h"
#include "imagedev/floppy.h"
#include "sound/ay8910.h"
#include "machine/wd_fdc.h"



//**************************************************************************
//  MACROS / CONSTANTS
//**************************************************************************

/* devices */
#define PIA2_TAG                    "pia2"
#define AY8912_TAG                  "ay8912"
#define WD2797_TAG                  "wd2797"



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

class dragon_alpha_state : public dragon64_state
{
public:
	dragon_alpha_state(const machine_config &mconfig, device_type type, const char *tag)
	: dragon64_state(mconfig, type, tag),
		m_pia_2(*this, PIA2_TAG),
		m_ay8912(*this, AY8912_TAG),
		m_fdc(*this, WD2797_TAG),
		m_floppy(*this, WD2797_TAG ":%u", 0U),
		m_nmis(*this, "nmis")
	{
	}

	void dgnalpha(machine_config &config);

private:
	static void dragon_formats(format_registration &fr);

	/* pia2 */
	void pia2_pa_w(uint8_t data);

	/* psg */
	uint8_t psg_porta_read();
	void psg_porta_write(uint8_t data);

	/* fdc */
	DECLARE_WRITE_LINE_MEMBER( fdc_intrq_w );
	DECLARE_WRITE_LINE_MEMBER( fdc_drq_w );

	/* driver overrides */
	virtual void device_start(void) override;
	virtual void device_reset(void) override;

	void dgnalpha_io1(address_map &map);

	required_device<pia6821_device> m_pia_2;
	required_device<ay8912_device> m_ay8912;
	required_device<wd2797_device> m_fdc;
	required_device_array<floppy_connector, 4> m_floppy;
	required_device<input_merger_device> m_nmis;

	/* modem */
	uint8_t modem_r(offs_t offset);
	void modem_w(offs_t offset, uint8_t data);
};

#endif // MAME_INCLUDES_DGNALPHA_H