I would like to be able to specify i.e. '486-33' and have the environment run literally at that speed. The reason for a request of this nature is because a lot of old DOS games and software were CPU cycle specific. What people have been doing is running moslo, but it's hard to get right given the vast # of cpu's out there, and it slows down the whole system anyways and probably wouldn't work right in a parallels VM anyways.
