private void LoadRom(string fileName)
{
var romFileInfo = new FileInfo(fileName);
// Open only existing rom files
if (!romFileInfo.Exists)
{
throw new FileNotFoundException();
}
if (romFileInfo.Length < 512)
{
throw new InvalidOperationException("ROM files must be at least 512 bytes.");
}
if (romFileInfo.Length > 8 * 1024 * 1024)
{
throw new InvalidOperationException("ROM files cannot exceed 8MB.");
}
emulatedGameBoy.LoadRom(MemoryUtility.ReadFile(romFileInfo, true));
if (emulatedGameBoy.RomInformation.HasRam && emulatedGameBoy.RomInformation.HasBattery)
{
var ramFileInfo = new FileInfo(Path.Combine(romFileInfo.DirectoryName, Path.GetFileNameWithoutExtension(romFileInfo.Name)) + ".sav");
var ramSaveStream = ramFileInfo.Open(FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.None);
ramSaveStream.SetLength(emulatedGameBoy.Mapper.SavedRamSize + (emulatedGameBoy.RomInformation.HasTimer ? 48 : 0));
ramSaveStream.Read(emulatedGameBoy.ExternalRam, 0, emulatedGameBoy.Mapper.SavedRamSize);
ramSaveWriter = new BinaryWriter(ramSaveStream);
if (emulatedGameBoy.RomInformation.HasTimer)
{
var mbc3 = emulatedGameBoy.Mapper as CrystalBoy.Emulation.Mappers.MemoryBankController3;
if (mbc3 != null)
{
var rtcState = mbc3.RtcState;
ramSaveReader = new BinaryReader(ramSaveStream);
rtcState.Frozen = true;
rtcState.Seconds = (byte)ramSaveReader.ReadInt32();
rtcState.Minutes = (byte)ramSaveReader.ReadInt32();
rtcState.Hours = (byte)ramSaveReader.ReadInt32();
rtcState.Days = (short)((byte)ramSaveReader.ReadInt32() + ((byte)ramSaveReader.ReadInt32() << 8));
rtcState.LatchedSeconds = (byte)ramSaveReader.ReadInt32();
rtcState.LatchedMinutes = (byte)ramSaveReader.ReadInt32();
rtcState.LatchedHours = (byte)ramSaveReader.ReadInt32();
rtcState.LatchedDays = (short)((byte)ramSaveReader.ReadInt32() + ((byte)ramSaveReader.ReadInt32() << 8));
rtcState.DateTime = new DateTime(1970, 1, 1) + TimeSpan.FromSeconds(ramSaveReader.ReadInt64());
rtcState.Frozen = false;
}
}
emulatedGameBoy.Mapper.RamUpdated += Mapper_RamUpdated;
}
emulatedGameBoy.Run();
}
private void runButton_Click(object sender, EventArgs e)
{
EmulatedGameBoy.Run();
}