> On Mar 11, 2020, at 5:24 PM, Fred Cisin via cctalk <[email protected]> 
> wrote:
> 
> On Wed, 11 Mar 2020, Al Kossow via cctalk wrote:
>> Bob Supnik got Unisys to release the sources to BTOS while he was
>> VP of engineering, but we've never been able to find a copy of them.
>> They outsourced support to India, and all traces to what happened to
>> the software have vanished.
> 
> So, in addition to many companies being reluctant to release rights to IP, a 
> lot of stuff is just lost without a trace.

Sometimes we get lucky.  Again, PLATO -- got permission to use it but the owner 
didn't have a copy.  Fortunately, someone else did (an actual still-running 
production system, on an actual CDC mainframe) and that person was willing to 
do the work to copy the system in a form we could use.

        paul


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