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35 lines
736 B
C++
35 lines
736 B
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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class Cc21 : public BaseMapper
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{
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protected:
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uint16_t GetPRGPageSize() override { return 0x8000; }
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uint16_t GetCHRPageSize() override { return 0x1000; }
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void InitMapper() override
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{
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SelectPRGPage(0, 0);
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SelectCHRPage(0, 0);
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SelectCHRPage(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 latch = (uint8_t)addr;
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if(addr == 0x8000) {
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latch = value;
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}
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if(_chrRomSize == 0x2000) {
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SelectCHRPage(0, latch & 0x01);
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SelectCHRPage(1, latch & 0x01);
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} else {
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//Overdumped roms
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SelectChrPage2x(0, (latch & 0x01) << 1);
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}
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SetMirroringType(latch & 0x01 ? MirroringType::ScreenBOnly : MirroringType::ScreenAOnly);
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}
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}; |