Ok, so it is frustrating that DEC had such a great idea starting out with 
VUPs but then in the later models they dropped VUPs in favor of TPS. It 
wouldn't be too bad if they had back annotated their data sheets, however...

I finally scored a 4000/100A which is way cool because it straddles the 
line between the desktop VAXen and the Q-bus ones. But I was trying to 
figure out how fast it is and its either slower than the 4000/60 or its 
faster than the 4000/500 :-)

Anyone know one way or the other?
--Chuck