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diff --git a/src/devices/bus/dmv/k230.h b/src/devices/bus/dmv/k230.h
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+// license:BSD-3-Clause
+// copyright-holders:Sandro Ronco
+#pragma once
+
+#ifndef __DMV_K230_H__
+#define __DMV_K230_H__
+
+#include "emu.h"
+#include "dmvbus.h"
+#include "cpu/i86/i86.h"
+
+// K234
+#include "cpu/m68000/m68000.h"
+
+// K235
+#include "cpu/nec/nec.h"
+#include "machine/pic8259.h"
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> dmv_k230_device
+
+class dmv_k230_device :
+ public device_t,
+ public device_dmvslot_interface
+{
+public:
+ // construction/destruction
+ dmv_k230_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source);
+ dmv_k230_device(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_READ8_MEMBER(io_r);
+ DECLARE_READ8_MEMBER(program_r);
+ DECLARE_WRITE8_MEMBER(io_w);
+ DECLARE_WRITE8_MEMBER(program_w);
+ DECLARE_READ8_MEMBER(rom_r);
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // dmvcart_interface overrides
+ virtual void hold_w(int state);
+ virtual void switch16_w(int state);
+ virtual bool av16bit();
+
+protected:
+ required_device<cpu_device> m_maincpu;
+ optional_memory_region m_rom;
+ dmvcart_slot_device * m_bus;
+ address_space * m_io;
+ int m_switch16;
+ int m_hold;
+};
+
+
+// ======================> dmv_k231_device
+
+class dmv_k231_device :
+ public dmv_k230_device
+{
+public:
+ // construction/destruction
+ dmv_k231_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual const rom_entry *device_rom_region() const;
+};
+
+
+// ======================> dmv_k234_device
+
+class dmv_k234_device :
+ public dmv_k230_device
+{
+public:
+ // construction/destruction
+ dmv_k234_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ DECLARE_READ8_MEMBER(snr_r);
+ DECLARE_WRITE8_MEMBER(snr_w);
+
+protected:
+ // optional information overrides
+ virtual const rom_entry *device_rom_region() const;
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ // device-level overrides
+ virtual void device_start();
+ virtual void device_reset();
+
+ // dmvcart_interface overrides
+ virtual void hold_w(int state);
+ virtual void switch16_w(int state);
+
+private:
+ int m_snr;
+};
+
+
+// ======================> dmv_k235_device
+
+class dmv_k235_device :
+ public dmv_k230_device
+{
+public:
+ // construction/destruction
+ dmv_k235_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+protected:
+ // 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;
+
+ void timint_w(int state) { m_pic->ir0_w(state); }
+ void keyint_w(int state) { m_pic->ir1_w(state); }
+ void busint_w(int state) { m_pic->ir2_w(state); }
+ void flexint_w(int state) { m_pic->ir6_w(state); }
+ void irq2a_w(int state) { if (!(m_dsw->read() & 0x02)) m_pic->ir5_w(state); }
+ void irq2_w(int state) { if ( (m_dsw->read() & 0x02)) m_pic->ir5_w(state); }
+ void irq3_w(int state) { m_pic->ir3_w(state); }
+ void irq4_w(int state) { m_pic->ir4_w(state); }
+ void irq5_w(int state) { if (!(m_dsw->read() & 0x01)) m_pic->ir7_w(state); }
+ void irq6_w(int state) { if ( (m_dsw->read() & 0x01)) m_pic->ir7_w(state); }
+
+private:
+ required_device<pic8259_device> m_pic;
+ required_ioport m_dsw;
+};
+
+// device type definition
+extern const device_type DMV_K230;
+extern const device_type DMV_K231;
+extern const device_type DMV_K234;
+extern const device_type DMV_K235;
+
+#endif /* __DMV_K230_H__ */