Oh, how I've missed discussions like this!!!! I have been involved with RT-11 and PDP/LSI stuff since 1974, and belonged to the MIT local users group/special interest group until the mid 80's. I loved (and still do) this stuff. For a while I also ran the VAX 11/780 cluster at Northeastern University when it was first brought in, but I always liked RT-11. Currently in the lab at Northeastern I contract with, we have a couple of microvax II's, and a few LSI-11 systems (all 11/73). I have done some hacking of the operating system for real-time stuff we needed in the lab, and also built custom q-bus boards for the lab. So I have a bit of hardware and software expertise for RT-11/Qbus. I felt lost, in a vacuum of sorts, when DEC was bought out, the LSI-11 stuff discontinued, and no local user group to speak of. I was also one of the voices asking for RT-11 on the VAX architecture, as we saw the end of the PDP/LSI line coming, and no good replacement. Well, I never saw it, but at least I can run some of our stuff on a PC with emulators now. I have close to 100 boards as spares now, even I think a T-11 SBC, and as soon as I can start moving the stuff off the LSI-11 systems, I will be getting rid of them. I already owe two systems to people who have asked for them, Curt(atari) and jcwren. Now that I have my two radio towers up and the weather is forcing me to work indoors, I can get back to what I promised people on the list. I recall that I took the images from a PLUS board (with the MSCP code) and burned it into eproms and then stuck them on a MXV-11, so you could say I didn't always do things kosher, but then again it worked. With that setup, I could use just two dual boards to make a small system. The "disk" was the TU-58 on the serial port on the MXV-11. So you could say I was an addict for this stuff, and I have found a home among fellow addicts/fruitcakes/junkies!! My only request is if anyone knows of another list/group I should join that is more specific to RT-11/LSI-11 stuff, please let me know. Joe Heck, K1LBG