43 lines
782 B
C
43 lines
782 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 Mapper120 : public BaseMapper
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{
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private:
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uint8_t _prgReg;
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protected:
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virtual uint16_t RegisterStartAddress() { return 0x41FF; }
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virtual uint16_t RegisterEndAddress() { return 0x41FF; }
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virtual uint16_t GetPRGPageSize() { return 0x2000; }
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virtual uint16_t GetCHRPageSize() { return 0x2000; }
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void InitMapper()
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{
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_prgReg = 0;
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UpdatePrg();
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SelectPrgPage4x(0, 8);
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SelectCHRPage(0, 0);
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}
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void StreamState(bool saving)
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{
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BaseMapper::StreamState(saving);
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Stream(_prgReg);
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if(!saving) {
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UpdatePrg();
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}
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}
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void UpdatePrg()
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{
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SetCpuMemoryMapping(0x6000, 0x7FFF, _prgReg, PrgMemoryType::PrgRom);
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}
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void WriteRegister(uint16_t addr, uint8_t value)
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{
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_prgReg = value;
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UpdatePrg();
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}
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};
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