Although this is possible, it usually occurs when you go from an older much slower processor to a newer much faster one. I should think going from 200 to 450MHZ on a Pentium or Celeron processor is not that great a leap, and the program should run. However the timing will no doubt be off. Where this is most often noticed, is when someone has some really old programs designed for a 286 machine, and then they try to run them on a Pentium 200. It just blows your mind how much faster the program runs. I have called the Battle of Britain which is a good example. It runs so fast on the Pentium, that it is unusable.

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Snarkie