I thought I'd change the subject line. Eric is of course correct, it's the 40 and not 44. I've had the 44 on my mind lately. The details of the 40E were given in an internal CMU report. This was poorly scanned by CMU and is available here: http://repository.cmu.edu/cgi/viewcontent.cgi?article=3241&context=comp… (and a hat tip to Paul Birkel for pointing this out). I will rescan the figures when I get my copy back from "interlibrary loan"). Wonder what happened to all that microcode written for Hydra???