Thanks to all who helped! I checked out my backplane (NOW I see why the 44's always tilt up in the rack, so you can frequently get to the backplane wiring) and sure enough, missing NPR jumpers. I wire wrapped them back in (laughing at just how long ago it was since I had to use a wirewrap tool) and now - voila. The 44 comes up just fine, passing T, T/E, and T/A tests anyways. I can also deposit and examine a random memory location or two, probably a good sign. Now I just have to find out why it doesn't seem to think I have a TU58 attached...then get some RL02's up... Another question - I was perusing the net for what OS's I can run on the 44. I already have RT11 with TSX+ up on another machine, so on this one I was looking for something different. Being as my bent is multiuser basic machines (like HP2000 TSB), I was piqued by some references to EduSystem25 I think it's called. I got the impression it USED to be Poly BASIC, but that software was later acquired by DEC and turned into the EduSystem25. There was a link saying where EduSystem25 can be found, but alas, the link is dead. Does anyone know where manuals and media might be found for EduSystem25? Thanks! Jay West