MSXPSG.hh

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#ifndef MSXPSG_HH
#define MSXPSG_HH
 
#include "MSXDevice.hh"
#include "AY8910.hh"
#include "AY8910Periphery.hh"
#include "serialize_meta.hh"
#include <array>
 
namespace openmsx {
 
class CassettePortInterface;
class RenShaTurbo;
class JoystickPortIf;
 
class MSXPSG final : public MSXDevice, public AY8910Periphery
{
public:
        explicit MSXPSG(const DeviceConfig& config);
        ~MSXPSG() override;
 
        void reset(EmuTime::param time) override;
        void powerDown(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:
        // AY8910Periphery: port A input, port B output
        [[nodiscard]] byte readA(EmuTime::param time) override;
        void writeB(byte value, EmuTime::param time) override;
 
private:
        CassettePortInterface& cassette;
        RenShaTurbo& renShaTurbo;
 
        std::array<JoystickPortIf*, 2> ports;
        int selectedPort = 0;
        int registerLatch;
        byte prev = 255;
        const byte keyLayout; // 0x40 or 0x00
        const byte addressMask; // controls address mirroring
        AY8910 ay8910; // must come after initialisation of most stuff above
};
SERIALIZE_CLASS_VERSION(MSXPSG, 2);
 
} // namespace openmsx
 
#endif