On 2015-03-16 21:05, Clem Cole wrote: On Mon, Mar 16, 2015 at 3:55 PM, Johnny Billquist <bqt at softjar.se <mailto:bqt at softjar.se>> wrote: Nitpick: The 11/40 "class" machines did not have split I/D space. Split I/D space was the 11/45,11/50,11/55 and 11/70, before we move into "modern" PDP-11s.. That's what I said - "shared I/D" as opposed to "split I/D" Doh! Color me stupid then. :-) Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol