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// license:BSD-3-Clause
// copyright-holders:Curt Coder
/**********************************************************************
Mega-Cart cartridge emulation
Copyright MESS Team.
Visit http://mamedev.org for licensing and usage restrictions.
**********************************************************************/
#pragma once
#ifndef __VIC20_MEGACART__
#define __VIC20_MEGACART__
#include "emu.h"
#include "exp.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
// ======================> vic20_megacart_device
class vic20_megacart_device : public device_t,
public device_vic20_expansion_card_interface,
public device_nvram_interface
{
public:
// construction/destruction
vic20_megacart_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
// optional information overrides
virtual machine_config_constructor device_mconfig_additions() const;
protected:
// device-level overrides
virtual void device_start();
virtual void device_reset();
// device_nvram_interface overrides
virtual void nvram_default() { }
virtual void nvram_read(emu_file &file) { if (m_nvram != NULL) { file.read(m_nvram, m_nvram_size); } }
virtual void nvram_write(emu_file &file) { if (m_nvram != NULL) { file.write(m_nvram, m_nvram_size); } }
// device_vic20_expansion_card_interface overrides
virtual UINT8 vic20_cd_r(address_space &space, offs_t offset, UINT8 data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3);
virtual void vic20_cd_w(address_space &space, offs_t offset, UINT8 data, int ram1, int ram2, int ram3, int blk1, int blk2, int blk3, int blk5, int io2, int io3);
private:
int m_nvram_en;
};
// device type definition
extern const device_type VIC20_MEGACART;
#endif
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