MSXS1990.hh

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#ifndef MSXS1990_HH
#define MSXS1990_HH
 
#include "MSXDevice.hh"
#include "FirmwareSwitch.hh"
#include "SimpleDebuggable.hh"
 
namespace openmsx {
 
class MSXS1990 final : public MSXDevice
{
public:
        explicit MSXS1990(const DeviceConfig& config);
 
        void reset(EmuTime::param time) override;
        [[nodiscard]] byte readIO(word port, EmuTime::param time) override;
        [[nodiscard]] byte peekIO(word port, EmuTime::param time) const override;
        void writeIO(word port, byte value, EmuTime::param time) override;
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        [[nodiscard]] byte readRegister(byte reg) const;
        void writeRegister(byte reg, byte value);
        void setCPUStatus(byte value);
 
private:
        struct Debuggable final : SimpleDebuggable {
                Debuggable(MSXMotherBoard& motherBoard, const std::string& name);
                [[nodiscard]] byte read(unsigned address) override;
                void write(unsigned address, byte value) override;
        } debuggable;
 
        FirmwareSwitch firmwareSwitch;
        byte registerSelect;
        byte cpuStatus;
};
 
} // namespace openmsx
 
#endif