Hi Lawrence,
Thank you for the interesting pics and videos of the Selectric terminal. Not long ago I
tossed an IBM model 50 electronic typewriter, which I had had since 1988. Have felt bad
about that ever since. Now I feel worse! :) It wasn't working though, and I
didn't know how difficult it would be to convert it into a terminal. By the way, the
uneven spacing you were seeing is something that it would do, when the proportional
spacing (PS) selector was set wrong. (Unlike many Selectrics, the model 50 did support
PS.)
Also enjoyed your pages on the IBM 360 model 30. Having just finished reading the
excellent book, "IBM's 360 and Early 370 Systems," by Pugh, et al, the
additional coverage of the "baby" model really hit the spot. Your VHDL
implementation of that machine is truly stunning!
All the best,
Steve L.