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31 lines
691 B
C++
31 lines
691 B
C++
#pragma once
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#include "pch.h"
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#include "NES/BaseMapper.h"
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class Mapper231 : public BaseMapper
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{
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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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void Reset(bool softReset) override
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{
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SelectPrgPage(0, 0);
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SelectPrgPage(1, 0);
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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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uint8_t prgBank = ((addr >> 5) & 0x01) | (addr & 0x1E);
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SelectPrgPage(0, prgBank & 0x1E);
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SelectPrgPage(1, prgBank);
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SetMirroringType(addr & 0x80 ? MirroringType::Horizontal : MirroringType::Vertical);
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}
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};
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