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64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "IMemoryHandler.h"
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#include "Snapshotable.h"
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class BaseMapper;
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class MemoryManager: public Snapshotable
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{
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private:
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static const int RAMSize = 0x10000;
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static const int InternalRAMSize = 0x800;
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static const int VRAMSize = 0x4000;
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static const int NameTableScreenSize = 0x400;
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static uint8_t _lastReadValue;
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shared_ptr<BaseMapper> _mapper;
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uint8_t *_internalRAM;
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uint8_t *_nametableRAM[2];
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IMemoryHandler** _ramReadHandlers;
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IMemoryHandler** _ramWriteHandlers;
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uint8_t ReadRegister(uint16_t addr);
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void WriteRegister(uint16_t addr, uint8_t value);
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void InitializeMemoryHandlers(IMemoryHandler** memoryHandlers, IMemoryHandler* handler, vector<uint16_t> *addresses, bool allowOverride);
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protected:
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void StreamState(bool saving) override;
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public:
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MemoryManager(shared_ptr<BaseMapper> mapper);
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~MemoryManager();
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void Reset(bool softReset);
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void RegisterIODevice(IMemoryHandler *handler);
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void UnregisterIODevice(IMemoryHandler *handler);
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uint8_t DebugRead(uint16_t addr, bool disableRegisterReads = true);
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uint16_t DebugReadWord(uint16_t addr);
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uint8_t DebugReadVRAM(uint16_t addr);
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void DebugWrite(uint16_t addr, uint8_t value);
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uint8_t* GetInternalRAM();
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void ProcessCpuClock();
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uint8_t Read(uint16_t addr, MemoryOperationType operationType = MemoryOperationType::Read);
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void Write(uint16_t addr, uint8_t value);
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void ProcessVramAccess(uint16_t &addr);
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uint8_t ReadVRAM(uint16_t addr, MemoryOperationType operationType = MemoryOperationType::PpuRenderingRead);
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void WriteVRAM(uint16_t addr, uint8_t value);
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uint32_t ToAbsolutePrgAddress(uint16_t ramAddr);
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uint32_t ToAbsoluteChrAddress(uint16_t vramAddr);
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static uint8_t GetOpenBus(uint8_t mask = 0xFF);
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};
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