So, the KT11-B Paging Option engineering drawings recently made their appearance online:
http://bitsavers.org/pdf/dec/pdp11/1120/KT11-B_EngrDrws_Feb72.pdf After a good bit of study of them, I have prepared a 'Technical Manual' for the KT11-B, somewhat in the flavour of the old DEC technical manuals: http://gunkies.org/wiki/KT11-B_Technical_Manual since the prints, by themselves, are fairly inscrutable: an incredibly large mass of gates (almost no MSI, other than a couple of Flip Chips included in the drawings as modules). The article basically attempts to describe how the thing works internally; it includes sections which describe the function (i.e. point) and operation of the circuitry on each page of the prints, and there's also a signal dictionary which describes what all the major signals mean/do. It's not quite absolutely complete, but it's 96% there at this point; I am still working on it. One thing I do intend to add (when I can work it out :-) is to annotate the table of states with info one what each states _means_. If anyone is particularly interested in this device, and reads the article, I would be very grateful for feedback on what's still missing that I could add, suggestions for better organization, etc, etc. Noel
