"I was able to find the sole designer of the PDP-8/S who is now retired, Saul B. Dinman, Product Line Manager, Module Product Line -1966-69 " Interesting reading... The GRI-909 is ALSO an interesting 16 bit machine. There is mention of it in Korn's minicomputer book, and Allen Baum has a little information on it. It would be interesting to find out if Saul has any information on it in his archives.