244,245c244,245
< if not (options.cpu_type == "detailed" or options.cpu_type == "timing"):
< print >> sys.stderr, "Ruby requires TimingSimpleCPU or O3CPU!!"
---
> if options.cpu_type == "atomic" or options.cpu_type == "AtomicSimpleCPU":
> print >> sys.stderr, "Ruby does not work with atomic cpu!!"