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Diffstat (limited to 'src/devices/bus/pce_ctrl/joypad2.h')
-rw-r--r-- | src/devices/bus/pce_ctrl/joypad2.h | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/src/devices/bus/pce_ctrl/joypad2.h b/src/devices/bus/pce_ctrl/joypad2.h new file mode 100644 index 00000000000..f73a8c01fa4 --- /dev/null +++ b/src/devices/bus/pce_ctrl/joypad2.h @@ -0,0 +1,91 @@ +// 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 |