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https://github.com/SourMesen/Mesen2.git
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49 lines
No EOL
1.1 KiB
C++
49 lines
No EOL
1.1 KiB
C++
#pragma once
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#include "pch.h"
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#include "NES/BaseMapper.h"
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class UnlD1038 : public BaseMapper
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{
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private:
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bool _returnDipSwitch = false;
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protected:
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uint32_t GetDipSwitchCount() override { return 2; }
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uint16_t GetPrgPageSize() override { return 0x4000; }
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uint16_t GetChrPageSize() override { return 0x2000; }
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bool AllowRegisterRead() override { return true; }
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void InitMapper() override
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{
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_returnDipSwitch = false;
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WriteRegister(0x8000, 0);
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}
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void Serialize(Serializer& s) override
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{
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BaseMapper::Serialize(s);
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SV(_returnDipSwitch);
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}
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uint8_t ReadRegister(uint16_t addr) override
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{
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if(_returnDipSwitch) {
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return GetDipSwitches();
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} else {
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return InternalReadRam(addr);
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}
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}
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void WriteRegister(uint16_t addr, uint8_t value) override
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{
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if(addr & 0x80) {
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SelectPrgPage(0, (addr & 0x70) >> 4);
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SelectPrgPage(1, (addr & 0x70) >> 4);
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} else {
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SelectPrgPage2x(0, (addr & 0x60) >> 4);
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}
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SelectChrPage(0, addr & 0x07);
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SetMirroringType(addr & 0x08 ? MirroringType::Horizontal : MirroringType::Vertical);
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_returnDipSwitch = (addr & 0x100) == 0x100;
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}
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}; |