MSXSCCPlusCart.hh

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// Note: this device is actually called SCC-I. But this would take a lot of
// renaming, which isn't worth it right now. TODO rename this :)

#ifndef MSXSCCPLUSCART_HH
#define MSXSCCPLUSCART_HH

#include "MSXDevice.hh"
#include "SCC.hh"
#include "Ram.hh"
#include "RomBlockDebuggable.hh"

namespace openmsx {

class MSXSCCPlusCart final : public MSXDevice
{
public:
        explicit MSXSCCPlusCart(const DeviceConfig& config);

        void powerUp(EmuTime::param time) override;
        void reset(EmuTime::param time) override;
        byte readMem(word address, EmuTime::param time) override;
        byte peekMem(word address, EmuTime::param time) const override;
        void writeMem(word address, byte value, EmuTime::param time) override;
        const byte* getReadCacheLine(word start) const override;
        byte* getWriteCacheLine(word start) const override;

        template<typename Archive>
        void serialize(Archive& ar, unsigned version);

private:
        void setMapper(int regio, byte value);
        void setModeRegister(byte value);
        void checkEnable();

        Ram ram;
        SCC scc;
        RomBlockDebuggable romBlockDebug;
        byte* internalMemoryBank[4]; // 4 blocks of 8kB starting at #4000
        enum SCCEnable {EN_NONE, EN_SCC, EN_SCCPLUS} enable;
        byte modeRegister;
        bool isRamSegment[4];
        bool isMapped[4];
        byte mapper[4];
        /*const*/ byte mapperMask;
        /*const*/ bool lowRAM, highRAM;
};

} // namespace openmsx

#endif