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diff --git a/src/emu/bus/vic10/exp.h b/src/emu/bus/vic10/exp.h
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+// license:BSD-3-Clause
+// copyright-holders:Curt Coder
+/**********************************************************************
+
+ Commodore VIC-10 Expansion Port emulation
+
+ Copyright MESS Team.
+ Visit http://mamedev.org for licensing and usage restrictions.
+
+**********************************************************************
+
+ GND 1 A GND
+ +5V 2 B _UPROM
+ +5V 3 C _RESET
+ _IRQ 4 D _NMI
+ _CR/W 5 E Sphi2
+ SP 6 F CA15
+ _EXRAM 7 H CA14
+ CNT 8 J CA13
+ _CIA 9 K CA12
+ _CIA PLA 10 L CA11
+ _LOROM 11 M CA10
+ BA 12 N CA9
+ R/_W PLA 13 P CA8
+ CD7 14 R CA7
+ CD6 15 S CA6
+ CD5 16 T CA5
+ CD4 17 U CA4
+ CD3 18 V CA3
+ CD2 19 W CA2
+ CD1 20 X CA1
+ CD0 21 Y CA0
+ P2 22 Z GND
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __VIC10_EXPANSION_SLOT__
+#define __VIC10_EXPANSION_SLOT__
+
+#include "emu.h"
+#include "formats/cbm_crt.h"
+
+
+
+//**************************************************************************
+// CONSTANTS
+//**************************************************************************
+
+#define VIC10_EXPANSION_SLOT_TAG "exp"
+
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_VIC10_EXPANSION_SLOT_ADD(_tag, _clock, _slot_intf, _def_slot) \
+ MCFG_DEVICE_ADD(_tag, VIC10_EXPANSION_SLOT, _clock) \
+ MCFG_DEVICE_SLOT_INTERFACE(_slot_intf, _def_slot, false)
+
+
+#define MCFG_VIC10_EXPANSION_SLOT_IRQ_CALLBACKS(_irq, _res) \
+ downcast<vic10_expansion_slot_device *>(device)->set_irq_callbacks(DEVCB2_##_irq, DEVCB2_##_res);
+
+#define MCFG_VIC10_EXPANSION_SLOT_SERIAL_CALLBACKS(_cnt, _sp) \
+ downcast<vic10_expansion_slot_device *>(device)->set_serial_callbacks(DEVCB2_##_cnt, DEVCB2_##_sp);
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> vic10_expansion_slot_device
+
+class device_vic10_expansion_card_interface;
+
+class vic10_expansion_slot_device : public device_t,
+ public device_slot_interface,
+ public device_image_interface
+{
+public:
+ // construction/destruction
+ vic10_expansion_slot_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ template<class _irq, class _res> void set_irq_callbacks(_irq irq, _res res) {
+ m_write_irq.set_callback(irq);
+ m_write_res.set_callback(res);
+ }
+
+ template<class _cnt, class _sp> void set_serial_callbacks(_cnt cnt, _sp sp) {
+ m_write_cnt.set_callback(cnt);
+ m_write_sp.set_callback(sp);
+ }
+
+ // computer interface
+ UINT8 cd_r(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram);
+ void cd_w(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram);
+ DECLARE_READ_LINE_MEMBER( p0_r );
+ DECLARE_WRITE_LINE_MEMBER( p0_w );
+
+ // cartridge interface
+ DECLARE_WRITE_LINE_MEMBER( irq_w ) { m_write_irq(state); }
+ DECLARE_WRITE_LINE_MEMBER( res_w ) { m_write_res(state); }
+ DECLARE_WRITE_LINE_MEMBER( cnt_w ) { m_write_cnt(state); }
+ DECLARE_WRITE_LINE_MEMBER( sp_w ) { m_write_sp(state); }
+
+protected:
+ // device-level overrides
+ virtual void device_config_complete() { update_names(); }
+ virtual void device_start();
+ virtual void device_reset();
+
+ // image-level overrides
+ virtual bool call_load();
+ virtual bool call_softlist_load(char *swlist, char *swname, rom_entry *start_entry);
+
+ virtual iodevice_t image_type() const { return IO_CARTSLOT; }
+
+ virtual bool is_readable() const { return 1; }
+ virtual bool is_writeable() const { return 0; }
+ virtual bool is_creatable() const { return 0; }
+ virtual bool must_be_loaded() const { return 1; }
+ virtual bool is_reset_on_load() const { return 1; }
+ virtual const char *image_interface() const { return "vic10_cart"; }
+ virtual const char *file_extensions() const { return "80,e0"; }
+ virtual const option_guide *create_option_guide() const { return NULL; }
+
+ // slot interface overrides
+ virtual const char * get_default_card_software(const machine_config &config, emu_options &options);
+
+ devcb2_write_line m_write_irq;
+ devcb2_write_line m_write_res;
+ devcb2_write_line m_write_cnt;
+ devcb2_write_line m_write_sp;
+
+ device_vic10_expansion_card_interface *m_card;
+};
+
+
+// ======================> device_vic10_expansion_card_interface
+
+// class representing interface-specific live vic10_expansion card
+class device_vic10_expansion_card_interface : public device_slot_card_interface
+{
+ friend class vic10_expansion_slot_device;
+
+public:
+ // construction/destruction
+ device_vic10_expansion_card_interface(const machine_config &mconfig, device_t &device);
+ virtual ~device_vic10_expansion_card_interface();
+
+protected:
+ // initialization
+ virtual UINT8* vic10_exram_pointer(running_machine &machine, size_t size);
+ virtual UINT8* vic10_lorom_pointer(running_machine &machine, size_t size);
+ virtual UINT8* vic10_uprom_pointer(running_machine &machine, size_t size);
+
+ // runtime
+ virtual UINT8 vic10_cd_r(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram) { return data; };
+ virtual void vic10_cd_w(address_space &space, offs_t offset, UINT8 data, int lorom, int uprom, int exram) { };
+ virtual int vic10_p0_r() { return 0; };
+ virtual void vic10_p0_w(int state) { };
+ virtual void vic10_sp_w(int state) { };
+ virtual void vic10_cnt_w(int state) { };
+
+ vic10_expansion_slot_device *m_slot;
+
+ UINT8 *m_exram;
+ UINT8 *m_lorom;
+ UINT8 *m_uprom;
+};
+
+
+// device type definition
+extern const device_type VIC10_EXPANSION_SLOT;
+
+
+// slot devices
+#include "std.h"
+
+SLOT_INTERFACE_EXTERN( vic10_expansion_cards );
+
+
+
+#endif