Software for small-memory PDP-11s?

js at js at
Fri Nov 13 16:52:30 CST 2015

On 11/13/2015 5:45 PM, Josh Dersch wrote:
> Hey all --
> Now that I have my PDP-11/05 running nicely,

What did you end up doing to arrive at 
that functionality?  Did I miss some emails?

> I'm curious what others are
> running on small systems like this -- until this point I've only played
> with larger (i.e. at least 28KW memory) systems.  I have only 8KW of memory
> (with no viable options for expansion)
Can't MOS memory be put on the Unibus in 
an expansion chassis?

> and there's not much out there that
> I've found.  There's paper-tape BASIC (which is always fun) and FOCAL, and
> PTS-11 ( which is pretty cool
> if a bit cumbersome.  Any other suggestions?
> I'm also curious if any version of RT-11 that supports the TU58 could be
> made to run on this system -- I have two SLUs in the system so in theory I
> can boot from an emulated TU58. However RT-11 4.0's SYSGEN manuals suggest
> that 12KW is the minimum supported (and experimentation bears this out) and
> I can't find much in the way of manuals for RT-11 V3B -- which I believe is
> the earliest version with TU58 support.  (V3B seems to be different enough
> from later versions that I'm not quite sure how the SYSGEN process works.)
> Thanks as always,
> Josh

More information about the cctech mailing list