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53 lines
1.1 KiB
C++
53 lines
1.1 KiB
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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class Lh10 : public BaseMapper
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{
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private:
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uint8_t _currentRegister;
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uint8_t _regs[8];
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protected:
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uint16_t GetPRGPageSize() override { return 0x2000; }
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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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memset(_regs, 0, sizeof(_regs));
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_currentRegister = 0;
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SelectCHRPage(0, 0);
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RemoveRegisterRange(0xC000, 0xDFFF);
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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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ArrayInfo<uint8_t> regs{ _regs, 8 };
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Stream(_currentRegister, regs);
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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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SetCpuMemoryMapping(0x6000, 0x7FFF, -2, PrgMemoryType::PrgRom);
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SelectPRGPage(0, _regs[6]);
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SelectPRGPage(1, _regs[7]);
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SelectPRGPage(2, 0, PrgMemoryType::WorkRam);
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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 & 0xE001) {
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case 0x8000: _currentRegister = value & 0x07; break;
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case 0x8001: _regs[_currentRegister] = value; UpdateState(); break;
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}
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}
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}; |