MegaSCSI.hh

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#ifndef MEGASCSI_HH
#define MEGASCSI_HH
 
#include "MSXDevice.hh"
#include "MB89352.hh"
#include "SRAM.hh"
#include "RomBlockDebuggable.hh"
#include <array>
 
namespace openmsx {
 
class MegaSCSI final : public MSXDevice
{
public:
        explicit MegaSCSI(const DeviceConfig& config);
 
        void reset(EmuTime::param time) override;
 
        [[nodiscard]] byte readMem(word address, EmuTime::param time) override;
        [[nodiscard]]byte peekMem(word address, EmuTime::param time) const override;
        void writeMem(word address, byte value, EmuTime::param time) override;
        [[nodiscard]]const byte* getReadCacheLine(word address) const override;
        [[nodiscard]]byte* getWriteCacheLine(word address) const override;
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        [[nodiscard]] size_t getSramSize() const;
        void setSRAM(unsigned region, byte block);
 
private:
        MB89352 mb89352;
        SRAM sram;
        RomBlockDebuggable romBlockDebug;
 
        std::array<bool, 4> isWriteable; // which region is readonly?
        std::array<byte, 4> mapped; // SPC block mapped in this region?
        const byte blockMask;
};
 
} // namespace openmsx
 
#endif