[Simh] PDP-15/76

[Pontus Pihlgren]

On Tue, Mar 15, 2016 at 06:31:35PM +0100, Mattis Lind wrote:
> 
> The documentation was the only thing that remained from the PDP-15
> installation at Standard Radio & Telefon (part of the ITT company) that was
> used for development of the ATC (Automatic Train Control) system.

An I have DECtapes from this system. I recall at least one being labled 
DOS. Could the content of these tapes be of help?

In that case I should make another effort to dump these tapes (I have 
dumped a few).

/P

> 
> /Mattis
> 
> 2016-03-15 17:46 GMT+01:00 Bob Supnik <bob at supnik.org>:
> 
> > I've pulled together the hardware pieces for the PDP-15/76 (PDP-15 with
> > UC15 PDP-11 IO processor), so now it's time to consider what software can
> > be run.
> >
> > The most likely candidate is XVM/DOS-15. While vanilla DOS-15 had UC15
> > support at some point, neither a complete source kit nor the appropriate
> > restore DECtape images seem to be available. The XVM/DOS-15 kit has all
> > required DECtapes, but it lacks the paper-tape elements. Fortunately, these
> > exist in source form in the XVM/DOS-15 source kit.
> >
> > ABSL11 - a PDP-15 read-in mode tape that allows PDP-11 absolute binary
> > tapes to be read into shared memory and moved to private memory. (This is
> > not strictly necessary, because the PDP-11 side has its "hardware" binary
> > loader via the LOAD command.) This is used to load PIREX. It must be
> > assembled on the PDP-15.
> >
> > PIREX - a PDP-11 absolute mode tape that runs the PDP-11 IO executive. It
> > has to be assembled on an -11, so the source must be loaded into an RT11
> > system, assembled, and punched out as a binary paper tape image. It's
> > possible that the macro11 cross assembler could be used instead.
> >
> > DOSSAV - a PDP-15 binary tape that restores a distribution kit (usually
> > two DECtapes) to RF, RP, or RK disk. It must be assembled on the PDP-15. It
> > uses PIREX.
> >
> > RKBOOT - a PDP-15 read-in mode tape that uses PIREX to boot a PDP-15
> > operating system off the RK15 (an 18b RK11). It must be assembled on the
> > PDP-15. It uses PIREX.
> >
> > /Bob
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