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-rw-r--r--src/devices/bus/sms_ctrl/rfu.h62
1 files changed, 62 insertions, 0 deletions
diff --git a/src/devices/bus/sms_ctrl/rfu.h b/src/devices/bus/sms_ctrl/rfu.h
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+// license:BSD-3-Clause
+// copyright-holders:Fabio Priuli
+/**********************************************************************
+
+ Sega Master System "Rapid Fire Unit" emulation
+
+**********************************************************************/
+
+#pragma once
+
+#ifndef __SMS_RAPID_FIRE__
+#define __SMS_RAPID_FIRE__
+
+
+#include "emu.h"
+#include "smsctrl.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> sms_rapid_fire_device
+
+class sms_rapid_fire_device : public device_t,
+ public device_sms_control_port_interface
+{
+public:
+ // construction/destruction
+ sms_rapid_fire_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
+
+ // optional information overrides
+ virtual ioport_constructor device_input_ports() const;
+
+ DECLARE_WRITE_LINE_MEMBER(th_pin_w);
+ DECLARE_READ32_MEMBER(pixel_r);
+
+protected:
+ // device-level overrides
+ virtual void device_start();
+ virtual machine_config_constructor device_mconfig_additions() const;
+
+ // device_sms_control_port_interface overrides
+ virtual UINT8 peripheral_r();
+ virtual void peripheral_w(UINT8 data);
+
+private:
+ required_ioport m_rfire_sw;
+ required_device<sms_control_port_device> m_subctrl_port;
+
+ UINT8 m_read_state;
+ attotime m_start_time;
+ const attotime m_interval;
+};
+
+
+// device type definition
+extern const device_type SMS_RAPID_FIRE;
+
+
+#endif