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// license:BSD-3-Clause
// copyright-holders:Olivier Galibert
/***************************************************************************

    m6507.h

    Mostek 6502, NMOS variant with reduced address bus

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

#ifndef __M6507_H__
#define __M6507_H__

#include "m6502.h"

class m6507_device : public m6502_device {
public:
	m6507_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);

protected:
	class mi_6507_normal : public memory_interface {
	public:
		virtual ~mi_6507_normal() {}
		virtual UINT8 read(UINT16 adr) override;
		virtual UINT8 read_sync(UINT16 adr) override;
		virtual UINT8 read_arg(UINT16 adr) override;
		virtual void write(UINT16 adr, UINT8 val) override;
	};

	class mi_6507_nd : public mi_6507_normal {
	public:
		virtual ~mi_6507_nd() {}
		virtual UINT8 read_sync(UINT16 adr) override;
		virtual UINT8 read_arg(UINT16 adr) override;
	};

	virtual void device_start() override;
};


enum {
	M6507_IRQ_LINE = m6502_device::IRQ_LINE,
	M6507_NMI_LINE = m6502_device::NMI_LINE,
	M6507_SET_OVERFLOW = m6502_device::V_LINE
};

extern const device_type M6507;

#endif