45 lines
912 B
C
45 lines
912 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 T262 : public BaseMapper
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{
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private:
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bool _locked;
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uint8_t _base;
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uint8_t _bank;
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bool _mode;
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protected:
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uint16_t GetPRGPageSize() { return 0x4000; }
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uint16_t GetCHRPageSize() { return 0x2000; }
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void InitMapper() override
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{
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SelectPRGPage(0, 0);
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SelectPRGPage(1, 7);
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SelectCHRPage(0, 0);
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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(_locked, _base, _bank, _mode);
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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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if(!_locked) {
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_base = ((addr & 0x60) >> 2) | ((addr & 0x100) >> 3);
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_mode = (addr & 0x80) == 0x80;
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_locked = (addr & 0x2000) == 0x2000;
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SetMirroringType(addr & 0x02 ? MirroringType::Horizontal : MirroringType::Vertical);
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}
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_bank = value & 0x07;
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SelectPRGPage(0, _base | _bank);
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SelectPRGPage(1, _base | (_mode ? _bank : 7));
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}
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};
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