> > > There are still some other -15 panels showing up in pictures, which I have > no > idea about. To start with, there's this image: > > http://homepages.inf.ed.ac.uk/gdmr/Historical/Photos/1980.08-PDP1540.jpg > > That's clearly an FP15 on the lower left, and I have identified the center > one > as a TC15, but what are the other two? > > And here's one with two _more_ different panels: > > http://www.simulogics.com/nostalgia/DEC/15_01.jpg > > The one on the right does _not_ seem to be a TC15... > > And then there are: > > http://www.chilton-computing.org.uk/gallery/ral/orig/r12600y.jpg > http://www.chilton-computing.org.uk/gallery/ral/orig/r12588.jpg > > but those seem to be the same as in the first one. >
Here are two more pictures with PDP-15 systems: This one at Chalmers in Gothenburg from 1975 (s/n 463?): http://www.hal1.se/Rolfs_web/Rolfs_images/1975_1/pages/7503%2003.htm The panel to the left is RF15 and the right is TC15. But what is the middle one? A similar system at SRT in Stockholm: (s/n 264) http://belisa.se/taag/19xx/1970-srt/1977/1977-sivert-pdp15.jpg I cannot deduce which option it is from the 18bitservicelist: https://dl.dropboxusercontent.com/u/96935524/Datormusuem/ 18bitServiceList1972.pdf /Mattis > > Noel >