SdCard.hh

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#ifndef SDCARD_HH
#define SDCARD_HH
 
#include "openmsx.hh"
#include "circular_buffer.hh"
#include "DiskImageUtils.hh"
#include <array>
#include <memory>
 
namespace openmsx {
 
class DeviceConfig;
class HD;
 
class SdCard
{
public:
        explicit SdCard(const DeviceConfig& config);
        ~SdCard();
 
        byte transfer(byte value, bool cs);
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
// private:
        enum class Mode {
                COMMAND,
                READ,
                MULTI_READ,
                WRITE,
                MULTI_WRITE
        };
 
private:
        void executeCommand();
        [[nodiscard]] byte readCurrentByteFromCurrentSector();
 
private:
        const std::unique_ptr<HD> hd; // can be nullptr
 
        std::array<byte, 6> cmdBuf;
        SectorBuffer sectorBuf;
        unsigned cmdIdx = 0;
 
        cb_queue<byte> responseQueue;
 
        byte transferDelayCounter = 0;
        Mode mode = Mode::COMMAND;
        unsigned currentSector = 0;
        int currentByteInSector = 0;
};
 
} // namespace openmsx
 
#endif