[Simh] CTSS

[Bob Supnik]

Here's as far as I've gotten:

1. All the 7094 hardware described in the listings for CTSS has been 
simulated and tested.
2. The simulator successfully runs IBSYS.
3. The simulator runs the disk format utility, standalone.
4. The simulator runs disk, drum, tape, and scanner diagnostics that are 
based on the "drivers" in CTSS.
5. Dave Pitts has written a cross-assembler and cross-linker that is 
very, very useful for dealing with code snippets from CTSS.  Although 
the actual assembly text has to be stripped back to the source line, 
after that, everything works smoothly.

I've attached two zip files - one contains the 7750 diag I wrote, as 
well as the "card" control file for the disk formatter/diagnostic. The 
other is Dave's extract of several interesting source tidbits from CTSS.

I'm copying Dave on this, to get him directly involved.

/Bob

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>    1.  Restoring CTSS? (Andrew Warkentin)
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> Message: 1
> Date: Sat, 24 May 2008 02:31:55 -0600
> From: Andrew Warkentin <andreww591 at gmail.com>
> Subject: [Simh] Restoring CTSS?
> To: General Discussion: On-Topic and Off-Topic Posts
> 	<cctalk at classiccmp.org>
> Cc: SIMH list <simh at trailing-edge.com>
> Message-ID: <4837D27B.1060906 at gmail.com>
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>
> I'm attempting to build a CTSS system from the tape images available at 
> http://www.piercefuller.com/library/ctss.html . How much progress have 
> other people made in building CTSS? It looks like there is almost enough 
> there to get a working system, and whatever is missing could be 
> reconstructed.
>
> So far, I've written a few scripts for extracting the individual lisings 
> from the tape and converting them into usable source files (although 
> manual editing is required for some files), and attempted to run the 
> disk formatting utility under IBSYS (unsuccessfully so far).
>
> If anyone is interested in helping, I can start a Sourceforge project. I 
>   don't care how complicated it is, I want to get CTSS running again, 
> due to its historical significance as the first timesharing OS (or at 
> the very least, one of the first).
>
>
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> End of Simh Digest, Vol 54, Issue 16
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