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diff --git a/src/devices/bus/electron/fbprint.h b/src/devices/bus/electron/fbprint.h
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+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ First Byte Printer Interface
+
+**********************************************************************/
+
+
+#ifndef MAME_BUS_ELECTRON_FBPRINT_H
+#define MAME_BUS_ELECTRON_FBPRINT_H
+
+#include "exp.h"
+#include "bus/centronics/ctronics.h"
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class electron_fbprint_device:
+ public device_t,
+ public device_electron_expansion_interface
+{
+public:
+ // construction/destruction
+ electron_fbprint_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock);
+
+protected:
+ // device-level overrides
+ virtual void device_start() override;
+
+ // optional information overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+
+ virtual uint8_t expbus_r(offs_t offset) override;
+ virtual void expbus_w(offs_t offset, uint8_t data) override;
+
+ required_device<centronics_device> m_centronics;
+ required_device<output_latch_device> m_cent_data_out;
+
+ int m_centronics_busy;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(ELECTRON_FBPRINT, electron_fbprint_device)
+
+
+#endif /* MAME_BUS_ELECTRON_FBPRINT_H */