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diff --git a/src/emu/machine/omti5100.h b/src/emu/machine/omti5100.h
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+/***************************************************************************
+
+ SMS OMTI 5100
+
+ license: MAME, GPL-2.0+
+ copyright-holders: Dirk Best
+
+ SCSI/SASI Intelligent Data Controller
+
+***************************************************************************/
+
+#pragma once
+
+#ifndef __OMTI5100_H__
+#define __OMTI5100_H__
+
+#include "emu.h"
+#include "cpu/z8/z8.h"
+
+
+//**************************************************************************
+// INTERFACE CONFIGURATION MACROS
+//**************************************************************************
+
+#define MCFG_OMTI5100_ADD(_tag) \
+ MCFG_DEVICE_ADD(_tag, OMTI5100, 0)
+
+#define MCFG_OMTI5100_BSY_HANDLER(_devcb) \
+ devcb = &omti5100_device::set_bsy_handler(*device, DEVCB_##_devcb);
+
+#define MCFG_OMTI5100_CD_HANDLER(_devcb) \
+ devcb = &omti5100_device::set_cd_handler(*device, DEVCB_##_devcb);
+
+#define MCFG_OMTI5100_IO_HANDLER(_devcb) \
+ devcb = &omti5100_device::set_io_handler(*device, DEVCB_##_devcb);
+
+#define MCFG_OMTI5100_REQ_HANDLER(_devcb) \
+ devcb = &omti5100_device::set_req_handler(*device, DEVCB_##_devcb);
+
+#define MCFG_OMTI5100_MSG_HANDLER(_devcb) \
+ devcb = &omti5100_device::set_msg_handler(*device, DEVCB_##_devcb);
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> omti5100_device
+
+class omti5100_device : public device_t
+{
+public:
+ // construction/destruction
+ omti5100_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // callbacks
+ template<class _Object> static devcb_base &set_bsy_handler(device_t &device, _Object object)
+ { return downcast<omti5100_device &>(device).m_bsy_w.set_callback(object); }
+
+ template<class _Object> static devcb_base &set_cd_handler(device_t &device, _Object object)
+ { return downcast<omti5100_device &>(device).m_cd_w.set_callback(object); }
+
+ template<class _Object> static devcb_base &set_io_handler(device_t &device, _Object object)
+ { return downcast<omti5100_device &>(device).m_io_w.set_callback(object); }
+
+ template<class _Object> static devcb_base &set_req_handler(device_t &device, _Object object)
+ { return downcast<omti5100_device &>(device).m_req_w.set_callback(object); }
+
+ template<class _Object> static devcb_base &set_msg_handler(device_t &device, _Object object)
+ { return downcast<omti5100_device &>(device).m_msg_w.set_callback(object); }
+
+ // data
+ DECLARE_READ8_MEMBER( data_r );
+ DECLARE_WRITE8_MEMBER( data_w );
+ DECLARE_READ_LINE_MEMBER( parity_r );
+ DECLARE_WRITE_LINE_MEMBER( parity_w );
+
+ // control
+ DECLARE_WRITE_LINE_MEMBER( rst_w );
+ DECLARE_WRITE_LINE_MEMBER( sel_w );
+ DECLARE_WRITE_LINE_MEMBER( ack_w );
+
+protected:
+ // device_t overrides
+ virtual const rom_entry *device_rom_region() const;
+ virtual machine_config_constructor device_mconfig_additions() const;
+ virtual void device_start();
+ virtual void device_reset();
+
+private:
+// required_device<z8681_device> m_cpu;
+
+ devcb_write_line m_bsy_w;
+ devcb_write_line m_cd_w;
+ devcb_write_line m_io_w;
+ devcb_write_line m_req_w;
+ devcb_write_line m_msg_w;
+};
+
+// device type definition
+extern const device_type OMTI5100;
+
+#endif // __OMTI5100_H__