Jerome Fine replies: NO!!!!! RT-11 has not been abandoned! At least not with respect to legally running V05.07 of RT-11. A license and distribution are required which cost about $ US 3000. If you can provide documentation which shows that you are legally allowed to run V05.07 of RT-11 and actually have the V05.07 binary distribution, then you would also be legally allowed to have the CD with all the prior distributions as well. By the way, do you have an active link to Mentec's web site? I have tried to find one for over a year and none are currently active as far as I have found. If you have an active link to Mentec Inc., please let us know. Mentec in Ireland redirects any links to a different company name (and no longer cares about PDP-11 software or hardware), so that does not count. With respect to fixing any bugs or implementing any enhancements, payment is also required as well as far as Mentec is concerned, although it may not be possible to have Mentec actually do the work. Why are you interested in V05.07 of RT-11? V05.03 of RT-11 is legally allowed to be run under SIMH - as far as I know, Mentec will not object to hobby users doing so. The only noticeable advantages are Y2K dates and extended device drivers for DU(X).SYS and LD(X).SYS which allow up to 64 devices to be recognized rather than just 8 devices. If you want any bugs in RT-11 fixed, I can fix most of them. I can also provide almost all enhancements that you might want. Are you a commercial user or a hobby user? Sincerely yours, Jerome Fine