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30 lines
739 B
C
30 lines
739 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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// INES Mapper 200 is similar but with the mirroring bit's meaning flipped, and the mirroring bit being also used as a fourth bank bit.
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class BmcSa005A : public BaseMapper
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{
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protected:
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virtual uint16_t GetPRGPageSize() override { return 0x4000; }
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virtual 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 WriteRegister(uint16_t addr, uint8_t value) override
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{
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uint8_t bank = addr & 0x0F;
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SelectPRGPage(0, bank);
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SelectPRGPage(1, bank);
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SelectCHRPage(0, bank);
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SetMirroringType(addr & 0x08 ? MirroringType::Vertical : MirroringType::Horizontal);
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}
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};
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