[Simh] Sigma simulator

[Bob Supnik]

I went back to look at it last week for the first time in six years. It 
certainly works well enough to run a whole bunch of diagnostics, 
according to the notes I left back in 2008.

More documentation on the disk peripherals has surfaced in recent years, 
and some of them would need to be implemented to have a reasonable shot 
at running the OS. In addition, IIRC, the peripheral simulation is not 
as accurate as it needs to be, particularly on status codes and error 
conditions.

I hope to get back to the Sigma in the fall, but in the meantime, feel 
free to work on it and fix any bugs you find.

/Bob

> ------------------------------ Message:2 Date: Wed, 2 Jul 2014 
> 13:49:25 -0400 (EDT) From: Cory Smelosky <b4 at gewt.net> To: 
> simh at trailing-edge.com Subject: [Simh] sigma simulator Message-ID: 
> <alpine.BSF.2.11.1407021348090.32682 at meaghan> Content-Type: 
> TEXT/PLAIN; format=flowed; charset=US-ASCII Hello, The unfinished 
> sigma simulator dumps core on quit...which I find interesting. Will 
> look in to finding out /why/. Not that the simulator really works 
> otherwise, mind...;)