Jake, > On Tue, Feb 9, 2016 at 11:27 AM, Noel Chiappa <[email protected]> .... > > Really, it's not that hard to upgrade an H9270-A (or the H9273-A in a > > BA11-N) > > to Q22 (I have done several of the latter); the transplant you speak of > > (were > > it possible) is on the same order of magnitude of work. > > > > Noel
On Tue, Feb 09, 2016 at 01:36:24PM -0500, Jacob Ritorto wrote: > So, since grafting in the Micro backplane would involve butcher work, I'm > now wholeheartedly convinced that I should be moving to your setup with the > BA11-N/S boxes, Noel. And I'm sold on the Q-22 backplane conversion > (despite failing the first time I tried it years ago). Going to study what > prints I have, review previous advice and go for it. > > Thank you for all the tips and hand-holding! I just did this conversion to an oddball dual-wide backplane, and it was extremely was easy. I used a bag of 50 pre-cut wire-wrap jumpers which were a few dollars from Jameco or Digikey. This page (which even mentions Noel!) has clear information and pictures identifying the four pins involved: http://web.frainresearch.org:8080/projects/pdp-11/conv22.php Mark -- Mark G. Thomas ([email protected]), KC3DRE
