[HECnet] RSTS/E is really picky

[Dave McGuire]

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