Chuck said > Is pin AA == pin 1 or pin 40 ? > > When using modern replacement connectors with keys and marked pin 1, > the translation seems to be pin AA == pin 40. > > Did DEC have an accepted mapping between the alphabet and numbers? > > -chuck
Not sure if this helps, as its the serial connector http://www.retrocmp.com/how-tos/interfacing-to-a-pdp-1105/144-interfacing-with-a-pdp-1105-sorting-the-wires Personally, it's a well-meaning page on a great site, but it confuses my newbie knowledge greatly when it says the upper table should be mounted on every PDP-11, then reckons the lower table is the / 05 one. The above /05 photo appears to correspond to the upper table but the lower table is the inverted SCL on the /05... is it not????? It could do with more annotation I think. Otherwise, it's WTF for me. I suppose when I get to powering up my /05 I should of course sanity check other references so I don't fry anything. Steve.
