47 lines
919 B
C
47 lines
919 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 Kaiser7031 : public BaseMapper
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{
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private:
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uint8_t _regs[4];
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protected:
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uint16_t GetPRGPageSize() override { return 0x800; }
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uint16_t GetCHRPageSize() override { return 0x2000; }
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void InitMapper() override
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{
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SetMirroringType(MirroringType::Vertical);
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memset(_regs, 0, sizeof(_regs));
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for(int i = 0; i < 16; i++) {
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SelectPRGPage(i, 15 - i);
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}
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SelectCHRPage(0, 0);
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UpdateState();
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}
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void StreamState(bool saving) override
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{
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BaseMapper::StreamState(saving);
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Stream(_regs[0], _regs[1], _regs[2], _regs[3]);
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if(!saving) {
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UpdateState();
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}
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}
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void UpdateState()
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{
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for(int i = 0; i < 4; i++) {
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SetCpuMemoryMapping(0x6000 + i * 0x800, 0x67FF + i * 0x800, _regs[i], PrgMemoryType::PrgRom);
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}
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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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_regs[(addr >> 11) & 0x03] = value;
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UpdateState();
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}
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};
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