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// license:BSD-3-Clause
// copyright-holders:Nigel Barnes
/**********************************************************************
Electron 68000 Expansion
**********************************************************************/
#ifndef MAME_BUS_ELECTRON_MC68K_M
#define MAME_BUS_ELECTRON_MC68K_M
#pragma once
#include "exp.h"
#include "cpu/m68000/m68000.h"
#include "machine/6821pia.h"
#include "machine/ram.h"
//**************************************************************************
// TYPE DEFINITIONS
//**************************************************************************
class electron_mc68k_device:
public device_t,
public device_electron_expansion_interface
{
public:
// construction/destruction
electron_mc68k_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
protected:
// device-level overrides
virtual void device_start() override ATTR_COLD;
virtual void device_reset() override ATTR_COLD;
// optional information overrides
virtual void device_add_mconfig(machine_config &config) override ATTR_COLD;
virtual const tiny_rom_entry *device_rom_region() const override ATTR_COLD;
virtual u8 expbus_r(offs_t offset) override;
virtual void expbus_w(offs_t offset, u8 data) override;
private:
required_device<m68000_base_device> m_maincpu;
required_device<ram_device> m_ram;
required_device_array<pia6821_device, 2> m_pia;
required_memory_region m_boot_rom;
required_memory_region m_exp_rom;
memory_passthrough_handler m_rom_shadow_tap;
void mem_map(address_map &map) ATTR_COLD;
u8 m_romsel;
};
// device type definition
DECLARE_DEVICE_TYPE(ELECTRON_MC68K, electron_mc68k_device)
#endif // MAME_BUS_ELECTRON_MC68K_M
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