Question about SIMH Sigma-7/9 emulation

Bill Degnan billdegnan at
Fri Jan 14 10:06:08 CST 2022

Here is what I have:
But it's for the Sigma 940 specifically, which is almost 10 years too old.
I don't know if there are enough similarities between the two systems,
maybe a useful peripheral config.    The 940 was famous for time sharing in
1966...Hopefully you can use this as a starting point.

On Fri, Jan 14, 2022 at 10:53 AM Dave via cctalk <cctalk at>

> Hi all,
> I see that SIMH incorporates the 32-bit Xerox Sigma architectures.  The
> Sigma 8/9/5x0 architectures are commented out but compile fine  Does anyone
> know if those later architectures have known issues?
> Has anyone succeeded in running CP-V on those emulations?  It would be
> amazing to run CP-V and tha various languages on a Sigma 9 emulations, not
> to mention the 350-point and 550-point adventures.  However, I haven't
> found any type of software on line.  Does anyone know of a stash somewhere?
> I remember that the Living Computer Museum, when it was open, briefly had
> a Sigma 9 up and running with CP-V, but was restricting public accounts due
> to some issue with the account generation mechanism.  I wonder if someone
> associated with the Museum might potentially have access to some CP-V tapes
> or images, even if the museum is closed.
> Thanks in advance,
> Dave

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