// license:BSD-3-Clause // copyright-holders:kmg /********************************************************************** Nintendo Family Computer ASCII Turbofile SRAM external storage device **********************************************************************/ #ifndef MAME_BUS_NES_CTRL_TURBOFILE_H #define MAME_BUS_NES_CTRL_TURBOFILE_H #pragma once #include "ctrl.h" #include "machine/nvram.h" //************************************************************************** // TYPE DEFINITIONS //************************************************************************** // ======================> nes_turbofile_device class nes_turbofile_device : public device_t, public device_nes_control_port_interface { public: // construction/destruction nes_turbofile_device(const machine_config &mconfig, const char *tag, device_t *owner, const XTAL &clock); virtual u8 read_exp(offs_t offset) override; virtual void write(u8 data) override; DECLARE_INPUT_CHANGED_MEMBER(lock_changed); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; virtual ioport_constructor device_input_ports() const override; virtual void device_add_mconfig(machine_config &config) override; private: required_device m_nvram; required_ioport m_lock; std::unique_ptr m_ram; u16 m_addr; u8 m_bit; u8 m_latch; u8 m_locked; }; // device type definition DECLARE_DEVICE_TYPE(NES_TURBOFILE, nes_turbofile_device) #endif // MAME_BUS_NES_CTRL_TURBOFILE_H