Jerome Fine replies: I have a few as well - and if I can ever find someone to actually use them, they will go for free. I can't ever remember actually using one although I might have attempted to test one just to see if it would work - in hindsight, I don't know why since I never had any intention of getting by with just RT11FB in RT-11. Actually, I have both versions - dual and quad. This is not a slight on those who like hardware far more than I do, just my own opinion - which I believe I stated at the beginning. The key point is that when testing software, the emulator is so much faster that it runs rings around the real hardware. PLUS - and this is a VERY BIG PLUS - I had occasion to attempt to debug (or at least understand) the boot code for a stand alone program. Try stepping through the boot block of an RX02 on a real PDP-11. With the emulator and even rudimentary [Thank goodness for the spell checker!!] debugging facilities (only one break point address - but at least single step was enabled), it was trivial - after all, there was only a single block of code to debug. In fact, I very much admire someone who can rescue an 11/44 from the scrap heap. But I do not know how and I am too busy in any case. And my back is no longer strong enough. Sincerely yours, Jerome Fine