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diff --git a/src/devices/bus/ieee488/c2040.h b/src/devices/bus/ieee488/c2040.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Commodore 2040/3040/4040 Disk Drive emulation
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __C2040__
+#define __C2040__
+
+#include "emu.h"
+#include "ieee488.h"
+#include "c2040fdc.h"
+#include "cpu/m6502/m6502.h"
+#include "cpu/m6502/m6504.h"
+#include "machine/6522via.h"
+#include "machine/mos6530n.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> c2040_t
+
+class c2040_t : public device_t,
+ public device_ieee488_interface
+{
+public:
+ // construction/destruction
+ c2040_t(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
+ c2040_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual const rom_entry *device_rom_region() const;
+ virtual machine_config_constructor device_mconfig_additions() const;
+ virtual ioport_constructor device_input_ports() const;
+
+ DECLARE_READ8_MEMBER( dio_r );
+ DECLARE_WRITE8_MEMBER( dio_w );
+ DECLARE_READ8_MEMBER( riot1_pa_r );
+ DECLARE_WRITE8_MEMBER( riot1_pa_w );
+ DECLARE_READ8_MEMBER( riot1_pb_r );
+ DECLARE_WRITE8_MEMBER( riot1_pb_w );
+ DECLARE_WRITE8_MEMBER( via_pb_w );
+ DECLARE_WRITE_LINE_MEMBER( mode_sel_w );
+ DECLARE_WRITE_LINE_MEMBER( rw_sel_w );
+
+ DECLARE_FLOPPY_FORMATS( floppy_formats );
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // device_ieee488_interface overrides
+ virtual void ieee488_atn(int state);
+ virtual void ieee488_ifc(int state);
+
+ enum
+ {
+ LED_POWER = 0,
+ LED_ACT0,
+ LED_ACT1,
+ LED_ERR
+ };
+
+ inline void update_ieee_signals();
+
+ required_device<m6502_device> m_maincpu;
+ required_device<m6504_device> m_fdccpu;
+ required_device<mos6532_t> m_riot0;
+ required_device<mos6532_t> m_riot1;
+ required_device<mos6530_t> m_miot;
+ required_device<via6522_device> m_via;
+ required_device<floppy_image_device> m_floppy0;
+ optional_device<floppy_image_device> m_floppy1;
+ required_device<c2040_fdc_t> m_fdc;
+ required_memory_region m_gcr;
+ required_ioport m_address;
+
+ // IEEE-488 bus
+ int m_rfdo; // not ready for data output
+ int m_daco; // not data accepted output
+ int m_atna; // attention acknowledge
+ int m_ifc;
+};
+
+
+// ======================> c3040_t
+
+class c3040_t : public c2040_t
+{
+public:
+ // construction/destruction
+ c3040_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual const rom_entry *device_rom_region() const;
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ DECLARE_FLOPPY_FORMATS( floppy_formats );
+};
+
+
+// ======================> c4040_t
+
+class c4040_t : public c2040_t
+{
+public:
+ // construction/destruction
+ c4040_t(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual const rom_entry *device_rom_region() const;
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ DECLARE_FLOPPY_FORMATS( floppy_formats );
+};
+
+
+// device type definition
+extern const device_type C2040;
+extern const device_type C3040;
+extern const device_type C4040;
+
+
+
+#endif