// license:BSD-3-Clause // copyright-holders:Sergey Svishchev /*************************************************************************** Toshiba 1000 Backup RAM Simulation of interface provided by 80C50 keyboard controller. ***************************************************************************/ #ifndef MAME_MACHINE_TOSH1000_BRAM_H #define MAME_MACHINE_TOSH1000_BRAM_H #pragma once /*************************************************************************** DEVICE CONFIGURATION MACROS ***************************************************************************/ #define MCFG_TOSH1000_BRAM_ADD(_tag) \ MCFG_DEVICE_ADD(_tag, TOSH1000_BRAM, 0) // ======================> tosh1000_bram_device class tosh1000_bram_device : public device_t, public device_nvram_interface { public: // construction/destruction tosh1000_bram_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock); DECLARE_READ8_MEMBER( read ); DECLARE_WRITE8_MEMBER( write ); uint8_t read(int offset); void write(int offset, uint8_t data); protected: // device-level overrides virtual void device_start() override; virtual void device_reset() override; // device_nvram_interface overrides virtual void nvram_default() override; virtual void nvram_read(emu_file &file) override; virtual void nvram_write(emu_file &file) override; private: enum { BRAM_SIZE = 160 }; uint8_t m_bram[BRAM_SIZE]; }; // device type definition DECLARE_DEVICE_TYPE(TOSH1000_BRAM, tosh1000_bram_device) #endif // MAME_MACHINE_TOSH1000_BRAM_H