Is there any way to get the uengine to wait for a memory write to complete without swapping context? I can swap context and wait for a signal but then other threads have a chance to run, which I don't want to happen. I just want the processor to spin and waste cycles while the write completes. Yes, I know this is inefficient, but it would be a big help right now for debugging. Thanks for the help. GKP ---------------------------------------------------------------------- Greg Prier Previously: A Mudder 3564 Boelter Hall Currently: A Bruin working UCLA CA 90095 toward a PhD (310) 825-8899 After that: No idea "Hell, there are no rules here. We're trying to accomplish something." Thomas Edison