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// license:BSD-3-Clause
// copyright-holders:R. Belmont
/*********************************************************************

    a2alfam2.h

    Implementation of the ALF Apple Music II card and compatibles

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

#ifndef MAME_BUS_A2BUS_A2ALFAM2_H
#define MAME_BUS_A2BUS_A2ALFAM2_H

#pragma once

#include "a2bus.h"
#include "sound/sn76496.h"

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

class a2bus_sn76489_device:
	public device_t,
	public device_a2bus_card_interface
{
protected:
	// construction/destruction
	a2bus_sn76489_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock);

	virtual void device_start() override;
	virtual void device_reset() override;
	virtual void device_add_mconfig(machine_config &config) override;

	// overrides of standard a2bus slot functions
	virtual uint8_t read_c0nx(uint8_t offset) override;
	virtual void write_c0nx(uint8_t offset, uint8_t data) override;
	virtual bool take_c800() override;

	required_device<sn76489_device> m_sn1;
	required_device<sn76489_device> m_sn2;
	required_device<sn76489_device> m_sn3;
	optional_device<sn76489_device> m_sn4;

private:
	uint8_t m_latch0, m_latch1, m_latch2, m_latch3;

protected:
	bool m_has4thsn;
};

class a2bus_alfam2_device : public a2bus_sn76489_device
{
public:
	a2bus_alfam2_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
};

class a2bus_aesms_device : public a2bus_sn76489_device
{
public:
	a2bus_aesms_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);

protected:
	virtual void device_add_mconfig(machine_config &config) override;
};

// device type definition
DECLARE_DEVICE_TYPE(A2BUS_ALFAM2, a2bus_alfam2_device)
DECLARE_DEVICE_TYPE(A2BUS_AESMS, a2bus_aesms_device)

#endif // MAME_BUS_A2BUS_A2ALFAM2_H