/// <summary>
/// Crée une nouvelle instance de SNES
/// </summary>
public SnesPlatform()
{
//Taille maximale addressable par la SNES
const int mappedMemorySize = 0x7FFFFF+1;
memory = new MemoryContainer(mappedMemorySize);
cpu = new CPU(this);
decoder = new InstructionsDecoder(cpu);
encoder = new InstructionsEncoder(cpu);
interpreter = new LiveInstructionsDecoder(this);
}
/// <summary>
/// Charge une ROM en mémoire.
/// </summary>
/// <param name="romStream"></param>
/// <param name="baseOffset">Début du stream à considérer</param>
/// <param name="headerOffset">A partir du début du stream, endroit où se trouve le header</param>
/// <param name="container"></param>
/// <param name="containerOffset"></param>
/// <returns></returns>
public static MemoryBin LoadInto(Stream romStream, int baseOffset, int headerOffset, MemoryContainer container, int containerOffset)
{
int romSize, ramSize;
GetROMParameters(romStream, baseOffset, headerOffset, out romSize, out ramSize);
if (romSize > container.Length - containerOffset)
throw new OutOfMemoryException(String.Format("Container est trop petit. \nDisponible : {0}.\nRequis : {1}",
container.Length - containerOffset,
romSize));
romStream.Position = baseOffset;
romStream.Read(container.Data, containerOffset, romSize);
return new MemoryBin(container, containerOffset, romSize);
}
public MemoryBin(MemoryContainer container, int start, int length)
{
if (container == null)
throw new ArgumentNullException("container");
this.container = container;
if (start < 0 || start >= container.Data.Length)
throw new ArgumentOutOfRangeException("start");
this.start = start;
if (length <= 0 || length + start > container.Data.Length)
throw new ArgumentOutOfRangeException("length");
this.length = length;
}