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diff --git a/src/devices/bus/electron/plus2.h b/src/devices/bus/electron/plus2.h
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+// license:BSD-3-Clause
+// copyright-holders:Nigel Barnes
+/**********************************************************************
+
+ Slogger Plus 2
+
+**********************************************************************/
+
+
+#ifndef MAME_BUS_ELECTRON_PLUS2_H
+#define MAME_BUS_ELECTRON_PLUS2_H
+
+#include "exp.h"
+#include "machine/6522via.h"
+#include "bus/electron/cart/slot.h"
+#include "bus/bbc/userport/userport.h"
+#include "bus/generic/slot.h"
+#include "bus/generic/carts.h"
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+class electron_plus2_device:
+ public device_t,
+ public device_electron_expansion_interface
+{
+public:
+ // construction/destruction
+ electron_plus2_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(address_space &space, offs_t offset) override;
+ virtual void expbus_w(address_space &space, offs_t offset, uint8_t data) override;
+
+private:
+ image_init_result load_rom(device_image_interface &image, generic_slot_device *slot);
+ DECLARE_DEVICE_IMAGE_LOAD_MEMBER(rom1_load) { return load_rom(image, m_rom[0]); }
+ DECLARE_DEVICE_IMAGE_LOAD_MEMBER(rom2_load) { return load_rom(image, m_rom[1]); }
+ DECLARE_DEVICE_IMAGE_LOAD_MEMBER(rom3_load) { return load_rom(image, m_rom[2]); }
+
+ required_device<electron_expansion_slot_device> m_exp;
+ required_device<via6522_device> m_via;
+ required_device_array<generic_slot_device, 3> m_rom;
+ required_device_array<electron_cartslot_device, 2> m_cart;
+ required_device<bbc_userport_slot_device> m_userport;
+
+ uint8_t m_romsel;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(ELECTRON_PLUS2, electron_plus2_device)
+
+
+#endif /* MAME_BUS_ELECTRON_PLUS2_H */