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32 lines
669 B
C
32 lines
669 B
C
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#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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class Mapper231 : 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, 0);
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SelectCHRPage(0, 0);
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}
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virtual void Reset(bool softReset)
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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)
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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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