31 lines
No EOL
870 B
C++
31 lines
No EOL
870 B
C++
#pragma once
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#include "stdafx.h"
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#include "BaseMapper.h"
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//Missing Flash rom support, and only tested via a test rom
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class Cheapocabra : public BaseMapper
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{
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protected:
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virtual uint16_t GetPRGPageSize() override { return 0x8000; }
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virtual uint16_t GetCHRPageSize() override { return 0x2000; }
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virtual uint16_t RegisterStartAddress() override { return 0x5000; }
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virtual uint16_t RegisterEndAddress() override { return 0x5FFF; }
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virtual uint32_t GetChrRamSize() override { return 0x8000; }
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void InitMapper() override
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{
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AddRegisterRange(0x7000, 0x7FFF, MemoryOperation::Write);
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WriteRegister(0x5000, GetPowerOnByte());
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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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SelectPRGPage(0, value & 0x0F);
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SelectCHRPage(0, (value >> 4) & 0x01);
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if(value & 0x20) {
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SetNametables(4, 5, 6, 7);
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} else {
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SetNametables(0, 1, 2, 3);
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}
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}
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}; |