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https://github.com/SourMesen/Mesen2.git
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61 lines
No EOL
1.4 KiB
C++
61 lines
No EOL
1.4 KiB
C++
#pragma once
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#include "pch.h"
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#include "Gameboy/Carts/GbCart.h"
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#include "Gameboy/GbMemoryManager.h"
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#include "Utilities/Serializer.h"
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class GbHuc1 : public GbCart
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{
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private:
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bool _irEnabled = false;
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bool _irOutputEnabled = false;
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uint8_t _prgBank = 1;
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uint8_t _ramBank = 0;
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public:
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void InitCart() override
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{
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_memoryManager->MapRegisters(0x0000, 0x7FFF, RegisterAccess::Write);
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}
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void RefreshMappings() override
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{
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Map(0x0000, 0x3FFF, GbMemoryType::PrgRom, 0, true);
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Map(0x4000, 0x7FFF, GbMemoryType::PrgRom, _prgBank * 0x4000, true);
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if(_irEnabled) {
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Unmap(0xA000, 0xBFFF);
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_memoryManager->MapRegisters(0xA000, 0xBFFF, RegisterAccess::ReadWrite);
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} else {
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Map(0xA000, 0xBFFF, GbMemoryType::CartRam, _ramBank * 0x2000, false);
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_memoryManager->MapRegisters(0xA000, 0xBFFF, RegisterAccess::None);
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}
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}
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uint8_t ReadRegister(uint16_t addr) override
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{
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//IR sensor (0xC0: no light, 0xC1: light detected)
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return 0xC0;
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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 & 0xE000) {
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case 0x0000: _irEnabled = ((value & 0x0F) == 0x0E); break;
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case 0x2000: _prgBank = value & 0x3F; break;
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case 0x4000: _ramBank = value & 0x03; break;
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case 0x6000: break;
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case 0xA000: _irOutputEnabled = (value & 0x01) != 0; break;
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}
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RefreshMappings();
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}
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void Serialize(Serializer& s) override
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{
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SV(_irEnabled);
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SV(_irOutputEnabled);
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SV(_prgBank);
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SV(_ramBank);
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}
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}; |