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-rw-r--r--src/devices/bus/pce_ctrl/joypad2.h91
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diff --git a/src/devices/bus/pce_ctrl/joypad2.h b/src/devices/bus/pce_ctrl/joypad2.h
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+// license:BSD-3-Clause
+// copyright-holders:cam900
+/**********************************************************************
+
+ NEC PC Engine/TurboGrafx-16 2 Button Joypad emulation
+
+**********************************************************************/
+
+#ifndef MAME_BUS_PCE_CTRL_JOYPAD2_H
+#define MAME_BUS_PCE_CTRL_JOYPAD2_H
+
+#pragma once
+
+
+#include "machine/74157.h"
+#include "pcectrl.h"
+
+
+
+//**************************************************************************
+// TYPE DEFINITIONS
+//**************************************************************************
+
+// ======================> pce_joypad2_device
+
+class pce_joypad2_device : public device_t,
+ public device_pce_control_port_interface
+{
+public:
+ // construction/destruction
+ pce_joypad2_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ // optional information overrides
+ virtual ioport_constructor device_input_ports() const override;
+
+protected:
+ // construction/destruction
+ pce_joypad2_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, u32 clock);
+
+ // device-level overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual void device_start() override;
+
+ // device_pce_control_port_interface overrides
+ virtual u8 peripheral_r() override;
+ virtual void sel_w(int state) override;
+ virtual void clr_w(int state) override;
+
+ // devices
+ required_device<ls157_device> m_muxer;
+};
+
+// ======================> pce_joypad2_turbo_device
+
+class pce_joypad2_turbo_device : public pce_joypad2_device
+{
+public:
+ // construction/destruction
+ pce_joypad2_turbo_device(const machine_config &mconfig, const char *tag, device_t *owner, u32 clock);
+
+ // optional information overrides
+ virtual ioport_constructor device_input_ports() const override;
+
+protected:
+ // device-level overrides
+ virtual void device_add_mconfig(machine_config &config) override;
+ virtual void device_start() override;
+ virtual void device_reset() override;
+
+ // device_pce_control_port_interface overrides
+ virtual void clr_w(int state) override;
+
+private:
+ u8 buttons_r();
+
+ // internal states
+ u8 m_counter = 0; // Turbo rate counter, connected on 74xx163 QB and QC.
+ bool m_prev_clr = false; // previous CLR pin state
+
+ // IO ports
+ required_ioport m_buttons_io;
+ required_ioport m_turbo_io;
+};
+
+
+// device type definition
+DECLARE_DEVICE_TYPE(PCE_JOYPAD2, pce_joypad2_device)
+DECLARE_DEVICE_TYPE(PCE_JOYPAD2_TURBO, pce_joypad2_turbo_device)
+
+
+#endif // MAME_BUS_PCE_CTRL_JOYPAD2_H