MegaFlashRomSCCPlus.hh

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#ifndef MEGAFLASHROMSCCPLUS_HH
#define MEGAFLASHROMSCCPLUS_HH
 
#include "MSXRom.hh"
#include "SCC.hh"
#include "AY8910.hh"
#include "AmdFlash.hh"
#include <array>
 
namespace openmsx {
 
class MegaFlashRomSCCPlus final : public MSXRom
{
public:
        MegaFlashRomSCCPlus(const DeviceConfig& config, Rom&& rom);
        ~MegaFlashRomSCCPlus() override;
 
        void powerUp(EmuTime::param time) override;
        void reset(EmuTime::param time) override;
        [[nodiscard]] byte peekMem(word address, EmuTime::param time) const override;
        [[nodiscard]] byte readMem(word address, EmuTime::param time) override;
        [[nodiscard]] const byte* getReadCacheLine(word address) const override;
        void writeMem(word address, byte value, EmuTime::param time) override;
        [[nodiscard]] byte* getWriteCacheLine(word address) const override;
 
        void writeIO(word port, byte value, EmuTime::param time) override;
 
        template<typename Archive>
        void serialize(Archive& ar, unsigned version);
 
private:
        [[nodiscard]] byte readMem2(word addr, EmuTime::param time);
 
        enum SCCEnable { EN_NONE, EN_SCC, EN_SCCPLUS };
        [[nodiscard]] SCCEnable getSCCEnable() const;
 
        [[nodiscard]] unsigned getSubslot(unsigned address) const;
        [[nodiscard]] unsigned getFlashAddr(unsigned addr) const;
 
private:
        SCC scc;
        AY8910 psg;
        AmdFlash flash;
 
        byte configReg;
        byte offsetReg;
        byte subslotReg;
        std::array<std::array<byte, 4>, 4> bankRegs;
        byte psgLatch;
        byte sccMode;
        std::array<byte, 4> sccBanks;
};
 
} // namespace openmsx
 
#endif