I don't know if Glen Slick is on this list, but I owe him one! I am working on an elderly PDP-11/23 system running RSX-11M v3.2 -- too old to know about MSCP disk controllers like the RQDX1/2/3 and compatibles. It is only sysgened for RK05, RL01/2, and an incompatible 3rd-party disk, but neither the RK05 or RL01/2 controllers are present. To do my work, I thus need an RL02 and controller... OR something that emulates an RL02. I had planned to post a note here today, asking for recommendations for RL01/2 (RLV11) emulators, but got distracted. Instead, I set about making an inventory of several boxes of Q-Bus cards I had accumulated over the years. Most were DEC, but a bunch were weird 3rd-party controllers, one of which was a TD Systems TDL-12. What the hell is a TDL-12? My Google searching led me eventually to Glen's Vintage Computer Info https://sites.google.com/site/glensvintagecomputerinfo/home and his page on the TD Systems TDL-12: https://sites.google.com/site/glensvintagecomputerinfo/td-systems/tdl-12 The TDL-12 turns out to be a Q-Bus SCSI controller, emulating up to four RL01/2 drives -- exactly what I needed! Glen's web page even includes a PDF of the original TD Systems manual for the board. So, Glen, whoever and wherever you are, I thank you from the bottom of my heart for creating and maintaining a web page about this orphan controller. You have saved me a lot of time, effort, and probably a bit of money as well. As an added bonus, Glen also has a page for an obscure HP Q-Bus logic analyzer card, which I also have. But that's a project for another day. Thanks, Alan Frisbie