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33 lines
705 B
C++
33 lines
705 B
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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class Mapper58 : public BaseMapper
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{
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protected:
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virtual uint16_t GetPRGPageSize() { return 0x4000; }
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virtual uint16_t GetCHRPageSize() { return 0x2000; }
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void InitMapper()
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{
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SelectPRGPage(0, 0);
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SelectPRGPage(1, 1);
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SelectCHRPage(0, 0);
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}
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void WriteRegister(uint16_t addr, uint8_t value)
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{
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uint8_t prgBank = addr & 0x07;
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if(addr & 0x40) {
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SelectPRGPage(0, prgBank);
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SelectPRGPage(1, prgBank);
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} else {
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SelectPRGPage(0, prgBank & 0xFE);
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SelectPRGPage(1, (prgBank & 0xFE) + 1);
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}
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SelectCHRPage(0, (addr >> 3) & 0x07);
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SetMirroringType(addr & 0x80 ? MirroringType::Horizontal : MirroringType::Vertical);
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}
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};
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