Re: Run CMS non-virtualiized?

--- In [email protected], "Dave Wade" <g4ugm@...> wrote:
>
> > -----Original Message-----
> > From: [email protected] 
> > [mailto:[email protected]] On Behalf Of Dick Thiebaud
> > Sent: 28 August 2010 21:39
> > To: [email protected]
> > Subject: Re: [H390-VM] Run CMS non-virtualiized?
> > 
> > 
> > In the version of CMS/CP in the sixpack, can CMS be run as 
> > the sole OS, 
> > non virtualized? Or by this date was it dependent on CP?
> > 
> > 
> 
> As it uses DIAG to perform disk i/o it won't run on "bare metal". However it
> may be interesting to note that the XT/370 and AT/3270 machines ran
> basically the same CMS as SP4 on a system with no CMS....
> 
> Dave Wade G4UGM
> Illegitimi Non Carborundum
>

Dave,

as a lucky owner of an AT/370 (or better ex-owner as it isn't working anymore;-), I can assure you that there was also a stripped down version of CP....(your definition AT/3270 is not completely wrong as in the package there was also an IBM 3270 card:-)  

CP was divided into two modules, one (CP370) running on the 370 card and one (CPIO) running on 80286; then of course there was a CMS module running on the 370 card and using CP functions.
 
All the I/O was performed by CPIO (in some way a precursor of Hercules); the minidisks where plain PC files,seen by VM/PC as FBA DASDs (BTW I can access them with Hercules and VM/SP).
The version of VM/PC I own is based on VM/SP3; not sure about following versions.

I discovered Hercules in September 2006 (looking for VMWARE appliances) and I had the insane idea to run VM/PC under Hercules.
The first step was to run only the CMS component of VM/PC but VM/370 didn't support FBA devices (and EDF CMS disks as well).      
In November 2008 I tried to run the CMS of VM/PC under the CP of VM/SP but it used some unfamiliar (and not documented) DIAGNOSE, so, after a pair of weeks of efforts, I decided to give up.


Regards.

Paul