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diff --git a/src/mess/machine/c64_bn1541.h b/src/mess/machine/c64_bn1541.h
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+/**********************************************************************
+
+ SpeedDOS / Burst Nibbler 1541/1571 Parallel Cable emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __C64_BN1541__
+#define __C64_BN1541__
+
+
+#include "emu.h"
+#include "machine/c64user.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> device_c64_floppy_parallel_interface
+
+class device_c64_floppy_parallel_interface
+{
+public:
+ // construction/destruction
+ device_c64_floppy_parallel_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_c64_floppy_parallel_interface();
+
+ virtual void parallel_data_w(UINT8 data) = 0;
+ virtual void parallel_strobe_w(int state) = 0;
+
+ device_c64_floppy_parallel_interface *m_other;
+
+protected:
+ UINT8 m_parallel_data;
+};
+
+
+// ======================> c64_bn1541_device
+
+class c64_bn1541_device : public device_t,
+ public device_c64_user_port_interface,
+ public device_c64_floppy_parallel_interface
+{
+public:
+ // construction/destruction
+ c64_bn1541_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ // device-level overrides
+ virtual void device_config_complete() { m_shortname = "c64_bn1541"; }
+ virtual void device_start();
+
+ // device_c64_user_port_interface overrides
+ virtual UINT8 c64_pb_r(address_space &space, offs_t offset);
+ virtual void c64_pb_w(address_space &space, offs_t offset, UINT8 data);
+ virtual void c64_pc2_w(int level);
+
+ // device_c64_floppy_parallel_interface overrides
+ virtual void parallel_data_w(UINT8 data);
+ virtual void parallel_strobe_w(int state);
+};
+
+
+// device type definition
+extern const device_type C64_BN1541;
+
+
+#endif