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// license:BSD-3-Clause
// copyright-holders:Fabio Priuli
/**********************************************************************
Sega Master System expansion slot emulation
**********************************************************************
**********************************************************************/
#pragma once
#ifndef __SMS_EXPANSION_SLOT__
#define __SMS_EXPANSION_SLOT__
#include "emu.h"
//**************************************************************************
// INTERFACE CONFIGURATION MACROS
//**************************************************************************
#define MCFG_SMS_EXPANSION_ADD(_tag, _slot_intf, _def_slot) \
MCFG_DEVICE_ADD(_tag, SMS_EXPANSION_SLOT, 0) \
MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> sms_expansion_slot_device
class device_sms_expansion_slot_interface;
class sms_expansion_slot_device : public device_t,
public device_slot_interface
{
public:
// construction/destruction
sms_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
virtual ~sms_expansion_slot_device();
// reading and writing
DECLARE_READ8_MEMBER(read);
DECLARE_WRITE8_MEMBER(write);
DECLARE_WRITE8_MEMBER(write_mapper);
DECLARE_READ8_MEMBER(read_ram);
DECLARE_WRITE8_MEMBER(write_ram);
int get_lphaser_xoffs();
device_sms_expansion_slot_interface *m_device;
protected:
// device-level overrides
virtual void device_start() override;
};
// ======================> device_sms_expansion_slot_interface
// class representing interface-specific live sms_expansion card
class device_sms_expansion_slot_interface : public device_slot_card_interface
{
public:
// construction/destruction
device_sms_expansion_slot_interface(const machine_config &mconfig, device_t &device);
virtual ~device_sms_expansion_slot_interface();
// reading and writing
virtual DECLARE_READ8_MEMBER(read) { return 0xff; };
virtual DECLARE_WRITE8_MEMBER(write) { };
virtual DECLARE_WRITE8_MEMBER(write_mapper) {};
virtual DECLARE_READ8_MEMBER(read_ram) { return 0xff; };
virtual DECLARE_WRITE8_MEMBER(write_ram) { };
virtual int get_lphaser_xoffs() { return 0; };
};
// device type definition
extern const device_type SMS_EXPANSION_SLOT;
// slot devices
#include "gender.h"
SLOT_INTERFACE_EXTERN( sms_expansion_devices );
#endif
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