Are there any mechanisms to throttle simh's CPU usage? I'd use it a lot more, but frankly my 11/53 is *quieter* than my PC or my G5 are with simh running. Both machines have load-based fans (a _bunch_ of them). They're near-silent at normal loads, but simh jacks CPU usage to 100% even when it's idle. That heats things up and I have a turbine in my lap. Doc