75 lines
2.5 KiB
C++
75 lines
2.5 KiB
C++
#include "stdafx.h"
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#include "iNesLoader.h"
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#include "../Utilities/CRC32.h"
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#include "MessageManager.h"
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std::unordered_map<uint32_t, uint8_t> iNesLoader::_submapperByCrc = {
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//MC-ACC Games (MMC3 variant) - Mapper 4, SubMapper 3
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{ 0xC527C297, 3 }, //Alien 3
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{ 0xAF05F37E, 3 }, //George Foreman's KO Boxing
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{ 0xA80A0F01, 3 }, //Incredible Crash Dummies
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{ 0x982DFB38, 3 }, //Mickey's Safari in Letterland
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{ 0x018A8699, 3 }, //Roger Clemens' MVP Baseball
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{ 0x2370C0A9, 3 }, //Rollerblade Racer
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{ 0x7416903F, 3 }, //Simpsons, The: Bart vs. The World
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{ 0x5991B9D0, 3 }, //Simpsons, The: Bartman Meets Radioactive Man
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{ 0xD679627A, 3 }, //Spider-Man: Return of the Sinister Six
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{ 0x7E57FBEC, 3 }, //T&C Surf Designs 2: Thrilla's Surfari
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{ 0xEA27B477, 3 }, //T2: Terminator 2: Judgment Day
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{ 0x7B4ED0BB, 3 }, //WWF King of the Ring
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{ 0xD4611B79, 3 }, //WWF WrestleMania: Steel Cage Challenge
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//IREM-G101 - Mapper 32, SubMapper 1
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{ 0x243A8735, 1 }, //Major League
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//IREM Holy Diver - Mapper 78, SubMapper 1
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{ 0xBA51AC6F, 3 }, //Holy Diver
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//CAMERICA-BF9097 - Mapper 71, SubMapper 1
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{ 0x1BC686A8, 1 }, //Fire Hawk
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};
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RomData iNesLoader::LoadRom(vector<uint8_t>& romFile)
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{
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RomData romData;
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uint8_t* buffer = romFile.data();
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NESHeader header;
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memcpy((char*)&header, buffer, sizeof(NESHeader));
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buffer += sizeof(NESHeader);
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header.SanitizeHeader(romFile.size());
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romData.MapperID = header.GetMapperID();
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romData.SubMapperID = header.GetSubMapper();
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romData.MirroringType = header.GetMirroringType();
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romData.HasBattery = header.HasBattery();
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romData.IsPalRom = header.IsPalRom();
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romData.IsVsSystem = header.IsVsSystem();
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romData.IsPlayChoice = header.IsPlaychoice();
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romData.HasTrainer = header.HasTrainer();
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if(romData.HasTrainer) {
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//512-byte trainer at $7000-$71FF (stored before PRG data)
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romData.TrainerData.insert(romData.TrainerData.end(), buffer, buffer + 512);
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buffer += 512;
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}
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if(header.GetRomHeaderVersion() != RomHeaderVersion::Nes2_0) {
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//Check rom CRC to set submapper as needed
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uint32_t romCrc = CRC32::GetCRC(buffer, header.GetPrgSize() + header.GetChrSize());
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auto crcCheckResult = _submapperByCrc.find(romCrc);
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if(crcCheckResult != _submapperByCrc.end()) {
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romData.SubMapperID = crcCheckResult->second;
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#ifdef _DEBUG
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MessageManager::DisplayMessage("GameInfo", "Header information corrected.");
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#endif
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}
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}
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romData.PrgRom.insert(romData.PrgRom.end(), buffer, buffer + header.GetPrgSize());
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buffer += header.GetPrgSize();
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romData.ChrRom.insert(romData.ChrRom.end(), buffer, buffer + header.GetChrSize());
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return romData;
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}
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