SoftChip can choose any IOS to run disc games. But it doesn't support GC games at all, and there's no support for IOS222. It only works with cIOS that work the same way as IOS do.
NeoGamma can't use IOS222 either, and you need to hexedit its config file manually to use another IOS/cIOS.
If you really want to play discs with IOS222, try uloader. That should even work for external usb dvd drives.
What do you need this for anyways?