mirror of
https://github.com/SourMesen/Mesen2.git
synced 2025-04-02 10:21:44 -04:00
30d28c83a5
This makes performance equal or slightly better to what it was before all of the recent accuracy improvements
116 lines
2.6 KiB
C++
116 lines
2.6 KiB
C++
#pragma once
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#include "pch.h"
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#include "SNES/MemoryMappings.h"
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#include "Debugger/DebugTypes.h"
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#include "Utilities/ISerializable.h"
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#include "Shared/MemoryType.h"
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class IMemoryHandler;
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class RegisterHandlerA;
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class RegisterHandlerB;
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class InternalRegisters;
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class RamHandler;
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class BaseCartridge;
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class Emulator;
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class SnesConsole;
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class SnesPpu;
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class SnesCpu;
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class CheatManager;
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enum class MemoryOperationType;
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enum class SnesEventType : uint8_t
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{
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HdmaInit,
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DramRefresh,
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HdmaStart,
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EndOfScanline
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};
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class SnesMemoryManager : public ISerializable
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{
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public:
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constexpr static uint32_t WorkRamSize = 0x20000;
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private:
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SnesConsole* _console = nullptr;
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Emulator* _emu = nullptr;
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unique_ptr<RegisterHandlerA> _registerHandlerA;
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unique_ptr<RegisterHandlerB> _registerHandlerB;
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InternalRegisters *_regs = nullptr;
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SnesPpu* _ppu = nullptr;
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SnesCpu* _cpu = nullptr;
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BaseCartridge* _cart = nullptr;
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CheatManager* _cheatManager = nullptr;
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uint8_t *_workRam = nullptr;
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uint64_t _masterClock = 0;
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uint16_t _hClock = 0;
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uint16_t _nextEventClock = 0;
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uint16_t _dramRefreshPosition = 0;
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SnesEventType _nextEvent = SnesEventType::DramRefresh;
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MemoryType _memTypeBusA = MemoryType::SnesPrgRom;
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uint8_t _cpuSpeed = 8;
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uint8_t _openBus = 0;
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MemoryMappings _mappings = {};
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vector<unique_ptr<IMemoryHandler>> _workRamHandlers;
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uint8_t _masterClockTable[0x800] = {};
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typedef void(SnesMemoryManager::*Func)();
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Func _execRead = nullptr;
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Func _execWrite = nullptr;
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template<uint8_t clocks> void IncMasterClock();
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void UpdateExecCallbacks();
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__forceinline void Exec();
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void ProcessEvent();
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public:
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void Initialize(SnesConsole* console);
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virtual ~SnesMemoryManager();
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void Reset();
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void GenerateMasterClockTable();
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void IncMasterClock4();
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void IncMasterClock6();
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void IncMasterClock8();
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void IncMasterClock40();
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void IncMasterClockStartup();
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void IncrementMasterClockValue(uint16_t value);
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uint8_t Read(uint32_t addr, MemoryOperationType type);
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uint8_t ReadDma(uint32_t addr, bool forBusA);
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uint8_t Peek(uint32_t addr);
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uint16_t PeekWord(uint32_t addr);
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void PeekBlock(uint32_t addr, uint8_t * dest);
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void Write(uint32_t addr, uint8_t value, MemoryOperationType type);
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void WriteDma(uint32_t addr, uint8_t value, bool forBusA);
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uint8_t GetOpenBus();
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uint64_t GetMasterClock();
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uint16_t GetHClock();
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uint8_t* DebugGetWorkRam();
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MemoryMappings* GetMemoryMappings();
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uint8_t GetCpuSpeed(uint32_t addr);
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uint8_t GetCpuSpeed();
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void SetCpuSpeed(uint8_t speed);
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MemoryType GetMemoryTypeBusA();
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bool IsRegister(uint32_t cpuAddress);
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bool IsWorkRam(uint32_t cpuAddress);
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uint32_t GetWramPosition();
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void Serialize(Serializer &s) override;
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};
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