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// 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
// ======================> 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);
uint8_t read(offs_t offset);
void write(offs_t 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 bool nvram_read(util::read_stream &file) override;
virtual bool nvram_write(util::write_stream &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
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