75 lines
1.2 KiB
C++
75 lines
1.2 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "IMemoryHandler.h"
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#include "GsuTypes.h"
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class GsuRomHandler : public IMemoryHandler
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{
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private:
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GsuState* _state;
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IMemoryHandler* _romHandler;
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public:
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GsuRomHandler(GsuState& state, IMemoryHandler* romHandler) : IMemoryHandler(SnesMemoryType::PrgRom)
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{
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_romHandler = romHandler;
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_state = &state;
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}
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uint8_t Read(uint32_t addr) override
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{
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if (!_state->SFR.Running || !_state->GsuRomAccess)
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{
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return _romHandler->Read(addr);
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}
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if (addr & 0x01)
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{
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return 0x01;
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}
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switch (addr & 0x0E)
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{
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default:
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case 2:
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case 6:
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case 8:
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case 0x0C:
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return 0;
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case 4: return 0x04;
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case 0x0A: return 0x08;
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case 0x0E: return 0x0C;
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}
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}
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uint8_t Peek(uint32_t addr) override
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{
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return Read(addr);
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}
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void PeekBlock(uint32_t addr, uint8_t* output) override
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{
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for (int i = 0; i < 0x1000; i++)
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{
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output[i] = Read(i);
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}
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}
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void Write(uint32_t addr, uint8_t value) override
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{
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//ROM
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}
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AddressInfo GetAbsoluteAddress(uint32_t address) override
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{
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if (!_state->SFR.Running || !_state->GsuRomAccess)
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{
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return _romHandler->GetAbsoluteAddress(address);
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}
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else
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{
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return {-1, SnesMemoryType::Register};
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}
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}
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};
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