Fix fake bootrom loading. We must load the rom completely (i.e. starting at addr 0), and only then overwrite with the "real" bootrom. This is so we can take a backup, so that, later, when the bootrom finishes, it can unload safely, restoring what the rom had in addrs 0..256
Fix fake bootrom loading. We must load the rom completely (i.e. starting at addr 0), and only then overwrite with the "real" bootrom. This is so we can take a backup, so that, later, when the bootrom finishes, it can unload safely, restoring what the rom had in addrs 0..256