Re: Re: Run CMS non-virtualiized?

Yes, I was referring to the VM/370 version. This seems like an 
interesting project some day. With all of the enhancements going on that 
are really CMS enhancements (as near as I can tell from lurking here), 
running CMS without CP might be more attractive.

I was just wondering if anyone had done some sort of scan of the source 
code to find the diags used. Something that might be more organized than 
trial and error.

Harold

Roger Bowler wrote:

>On Sunday, August 29, 2010 Dave Wade wrote:
>  
>
>>They are just the normal DIAGs so I don't believe there isn't a list
>>any where. I think the main one is for disk i/o but you could do a
>>PER TRACE of the IPL to see what actually happens. I guess CMS will
>>IPL without some DIAGs but then other commands would fail.
>>    
>>
> 
>Which version of CMS are we talking about? The VM/370 version?
>
>Almost from the very start Hercules had support for some of the CP
>DIAG codes, because one of the scenarios envisaged for Hercules in the
>1999 timeframe was that CMS would run directly in a Hercules machine
>without CP. The idea was to offer some kind of mainframe-like personal
>computing environment (what I considered the PC "ought" to have been!)
>Being very light on resource consumption, CMS was ideally suited to
>the somewhat limited PC computing power of the time.
>
>At the time the idea did not gain much traction, as people seemed more
>interested in running MVS, so the project was never completed, but the
>DIAG support is still there (in vm.c).
>
>It would be relatively straightforward to add the missing DIAG codes.
>AFAICR they are well-documented in the VM manuals.
>
>To find out which DIAG codes are missing, you just have to IPL CMS,
>see where it fails, add the missing DIAG, and repeat until it no
>longer fails :-)
>
>--
>Regards,
>Roger Bowler
>http://perso.wanadoo.fr/rbowler
>Hercules "I can't believe it's not a mainframe!"
>
>
>
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