Norm, I was unable to duplicate the "cam exceptions allowed" status problem in simulation, and what you described certainly shouldn't be happening. I found two extra, erroneous lines describing the exception status bits in "/im/faust/txt/ifc.txt"--does this explain the problem (I have deleted the two lines in question)? If not, is there an experiment I can run to duplicate the problem? It was good to hear of the birth of CAM! Doug