MSXS1985.hh

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/*
 * This class implements the
 *   backup RAM
 *   bitmap function
 * of the S1985 MSX-engine
 *
 *  TODO explanation
 */
 
#ifndef S1985_HH
#define S1985_HH
 
#include "MSXDevice.hh"
#include "MSXSwitchedDevice.hh"
#include <memory>
 
namespace openmsx {
 
class SRAM;
 
class MSXS1985 final : public MSXDevice, public MSXSwitchedDevice
{
public:
        explicit MSXS1985(const DeviceConfig& config);
        ~MSXS1985() override;
 
        // MSXDevice
        void reset(EmuTime::param time) override;
 
        // MSXSwitchedDevice
        [[nodiscard]] byte readSwitchedIO(word port, EmuTime::param time) override;
        [[nodiscard]] byte peekSwitchedIO(word port, EmuTime::param time) const override;
        void writeSwitchedIO(word port, byte value, EmuTime::param time) override;
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        std::unique_ptr<SRAM> sram;
        nibble address;
        byte color1;
        byte color2;
        byte pattern;
};
SERIALIZE_CLASS_VERSION(MSXS1985, 2);
 
} // namespace openmsx
 
#endif