MSXMatsushita.hh

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#ifndef MSXMATSUSHITA_HH
#define MSXMATSUSHITA_HH
 
#include "EmuTime.hh"
#include "MSXDevice.hh"
#include "MSXSwitchedDevice.hh"
#include "FirmwareSwitch.hh"
#include "Clock.hh"
#include "serialize_meta.hh"
 
namespace openmsx {
 
class MSXCPU;
class SRAM;
class VDP;
 
class MSXMatsushita final : public MSXDevice, public MSXSwitchedDevice
{
public:
        explicit MSXMatsushita(const DeviceConfig& config);
        void init() override;
        ~MSXMatsushita() override;
 
        // MSXDevice
        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;
 
        // 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:
        void unwrap();
        void delay(EmuTime::param time);
 
private:
        MSXCPU& cpu;
        VDP* vdp = nullptr;
        Clock<5369318> lastTime{EmuTime::zero()}; // 5.3MHz = 3.5MHz * 3/2
 
        FirmwareSwitch firmwareSwitch;
        const std::unique_ptr<SRAM> sram; // can be nullptr
        word address;
        nibble color1, color2;
        byte pattern;
        const bool turboAvailable;
        bool turboEnabled = false;
};
SERIALIZE_CLASS_VERSION(MSXMatsushita, 2);
 
} // namespace openmsx
 
#endif