[Simh] Oddball platform as SIMH/pdp11 host

[Clem Cole]

In theory - I do not see why not.   IIRC its an YOCTO Linux port under the
covers >>with some hacking<< I'd have to ask some of my brethren in the
Intel OTC group exactly what was subsetted, although my worry is that some
of the folks that worked on that may have left Intel.  Also. I don't think
anyone ever tried to compile simh for it - so you are likely to run into a
something that is not quite kosher.
But simh's 'needs' are pretty simple, particularly if you start off sans
networking.

Another hint, having done this sort of thing in a past life, look carefully
at the target HW; as moving code from a PDP-11 to a PC, be careful trying
to map a real DEC DR-11 to certain PC parallel port implementations can end
up be a little trickier than you might think, as the semantics of each are
close but slightly different.  IIRC, You just need to be careful of order
of things, and leading and trailing edge latching semantics on the devices
that did not quite line up -- I just remember a project a few years back
were we had a nasty race condition with strange double counts and the
solution a TTL state machine between the emulated DR and the PC/Parallel
port.

FWIW:  I have a couple of Gallieo boards at home (Gen2 I think, but they
might be Gen1 - I have not messed with since the Edison's came out).   Drop
a line privately and I see if I can help you.

On Mon, Jun 5, 2017 at 10:20 PM, Gregg Levine <gregg.drwho8 at gmail.com>
wrote:

> Hello!
> Can the SIMH project materials, such as the PDP11 emulator be built
> and even managed on an Intel Galileo gen 2 ( or the gen 1) platform?
>
> This is an Intel QUARK SOC platform leveraged such that it's output
> and input is in the form of the Arduino families.
>
> However networking is already physically present, and there are two
> serial ports, the main one, and the classic one found as digital pins
> 0 and 1.
>
> Ideally what I'd like is to have the thing pose as an appropriate
> PDP11, and deliver its terminal via the second serial output.
>
> For digital I/O i'd eventually like to tease the thing to allow its
> eight regular pins to become the ones for an emulated DR-11 or DR-11C
> board.
>
> I do know that the latest release of the E11 product does make use of
> one company's digital I/O board to become either one of those. And I'm
> not even sure how to get that product to work in what I'm reasonably
> sure SIMH could do.
>
> But one problem at a time.....
> -----
> Gregg C Levine gregg.drwho8 at gmail.com
> "This signature fought the Time Wars, time and again."
> _______________________________________________
> Simh mailing list
> Simh at trailing-edge.com
> http://mailman.trailing-edge.com/mailman/listinfo/simh
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.trailing-edge.com/pipermail/simh/attachments/20170606/569a601b/attachment.html>