102a103,121
> @classmethod
> def memory_mode(cls):
> """Which memory mode does this CPU require?"""
> return 'invalid'
>
> @classmethod
> def require_caches(cls):
> """Does the CPU model require caches?
>
> Some CPU models might make assumptions that require them to
> have caches.
> """
> return False
>
> @classmethod
> def support_take_over(cls):
> """Does the CPU model support CPU takeOverFrom?"""
> return False
>