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43 lines
837 B
C++
43 lines
837 B
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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class NtdecTc112 : public BaseMapper
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{
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protected:
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virtual uint16_t RegisterStartAddress() override { return 0x6000; }
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virtual uint16_t RegisterEndAddress() override { return 0x7FFF; }
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virtual uint16_t GetPRGPageSize() override { return 0x2000; }
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virtual uint16_t GetCHRPageSize() override { return 0x0800; }
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void InitMapper() override
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{
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SelectPRGPage(1, -3);
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SelectPRGPage(2, -2);
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SelectPRGPage(3, -1);
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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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switch(addr & 0x03){
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case 0:
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SelectCHRPage(0, value >> 1);
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SelectCHRPage(1, (value >> 1) + 1);
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break;
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case 1:
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SelectCHRPage(2, value >> 1);
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break;
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case 2:
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SelectCHRPage(3, value >> 1);
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break;
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case 3:
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SelectPRGPage(0, value);
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break;
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}
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}
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};
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