58a59,61
> parser.add_option("--access-backing-store", action="store_true", default=False,
> help="Should ruby maintain a second copy of memory")
>
231a235,239
>
> # Create a backing copy of physical memory in case required
> if options.access_backing_store:
> ruby.phys_mem = SimpleMemory(range=AddrRange(options.mem_size),
> in_addr_map=False)