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42 lines
No EOL
898 B
C++
42 lines
No EOL
898 B
C++
#pragma once
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#include "pch.h"
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#include "NES/BaseMapper.h"
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class Mapper202 : public BaseMapper
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{
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private:
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bool _prgMode1 = false;
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protected:
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uint16_t GetPrgPageSize() override { return 0x4000; }
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uint16_t GetChrPageSize() override { return 0x2000; }
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void InitMapper() override
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{
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SelectPrgPage(0, 0);
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SelectPrgPage(1, 0);
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SelectChrPage(0, 0);
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}
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virtual void Serialize(Serializer& s) override
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{
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BaseMapper::Serialize(s);
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SV(_prgMode1);
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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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_prgMode1 = (addr & 0x09) == 0x09;
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SelectChrPage(0, (addr >> 1) & 0x07);
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if(_prgMode1) {
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SelectPrgPage(0, (addr >> 1) & 0x07);
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SelectPrgPage(1, ((addr >> 1) & 0x07) + 1);
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} else {
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SelectPrgPage(0, (addr >> 1) & 0x07);
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SelectPrgPage(1, (addr >> 1) & 0x07);
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}
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SetMirroringType(addr & 0x01 ? MirroringType::Horizontal : MirroringType::Vertical);
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}
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}; |