Bob Armstrong wrote: Makes you wish you had a real PDP-11/74 around... :-) So can E11 actually use multiple processors on the host (aka Intel) side so that the emulated 11/74 CPUs can really run in parallel? Yes. It also forks of separate processes for controllers and the like, so they can run on different processors, if possible. So it will, as much as possibly allowed by the host, act like the real machine. Johnny