/// <summary>
/// Same as memcpy, but copies from cart rom
/// The code section( >= 0x4300) is protected and can not be read.
/// If filename specified, load data from a different cartridge.
/// </summary>
/// <param name="dest_addr">The destination address to write to.</param>
/// <param name="source_addr">The source address to read from.</param>
/// <param name="len">The length of data to read/write.</param>
/// <param name="filename">The path to a different cartridge.</param>
/// <returns>Returns null everytime.</returns>
public object Reload(int dest_addr, int source_addr, int len, string filename = "")
{
Trace.Assert(dest_addr < 0x4300);
Cartridge cart = filename.Length == 0 ? loadedGame.cartridge : new Cartridge(filename);
memory.Memcpy(dest_addr, source_addr, len, cart.rom);
return(null);
}
/// <summary>
/// Same as memcpy, but copies from base ram to cart rom
/// cstore() is equivalent to cstore(0, 0, 0x4300)
/// Can use for writing tools to construct carts or to visualize the state
/// of the map / spritesheet using the map editor / gfx editor.
/// The code section ( >= 0x4300) is protected and can not be written to.
/// </summary>
/// <param name="dest_addr">The destination address to write to.</param>
/// <param name="source_addr">The source address to read from.</param>
/// <param name="len">The length of data to read/write.</param>
/// <param name="filename">The path to a different cartridge.</param>
/// <returns>Returns null everytime.</returns>
public object Cstore(int dest_addr, int source_addr, int len, string filename = null)
{
Trace.Assert(dest_addr < 0x4300);
Cartridge cart = filename == null ? loadedGame.cartridge : new Cartridge(filename, true);
Buffer.BlockCopy(memory.ram, source_addr, cart.rom, dest_addr, len);
cart.SaveP8();
return(null);
}