On 05/20/2014 07:18 PM, Johnny Billquist wrote: ...and won't run on my 11/34, for example. ;) (I *think*...right?) Remember, while I do use simh quite a bit, I'm primarily based on real hardware here, and I can't do "set cpu .." on that. ;) Well, yes, M+ does not officially support the 11/34. However, there was a third-party (or several) that added a 22-bit MMU to the 11/34, looking like an 11/24. And you could of course try to generate an unsupported M+ system with 18-bit addressing. I have never tried it in practice, but there is code inside M+ for this thing... That'd be fun to try! I may have to do that at some point. Yeah. My IP will not run on such machines, and I have no plans on ever implementing it. It could be done, of course, but the work is no fun, and I have so many other more important things to waste my time on... :-) Well I'd be one user, if you ever decide to do it. I'd then bring up the world's first PDP-11/34-based web server! :-) It's just a lot of work. First and foremost, the TCP driver would need to be chopped up, since it is today somewhere around 15K, and that would need to be divided into two segments of less than 8K, and then I'd have to do the calling between the segments. Second, a few tools like IFCONFIG would have to become overlaid in order to fit into memory. That is not as much work, though. Yuck! :-( Start by getting some "modern" hardware instead, and run proper M+. :-) And then start writing some code to play with the network from RSX. It's really easy to write clients or servers under RSX. I've got a LOT of PDP-11 hardware here; many of my machines are M+ capable. As I explained, I just have a personal attachment to RSX11M in particular, and the 11/34 in particular...it'd just be neat to run IP on it, that's all, but I really have no problem with never being able to. I have plenty of other machines on which to run your IP stack, and I surely will at some point soon. I've done a C library and a BASIC+2 library so far, which are really easy to use. F77 and Pascal is on the list of things to do. That'll be great! I need to carve out some time to dedicate to that. -Dave -- Dave McGuire, AK4HZ New Kensington, PA