Re: SXMACLIB

Much is described here:
 

 https://en.wikipedia.org/wiki/Software_copyright https://en.wikipedia.org/wiki/Software_copyright
 

 I suspect that source code could always have been copyrighted, though
 it might be that not everyone knew that.  But until about 1980, the
 status of object code wasn't so obvious.  Source code is a creative
 work by a person (or company), but object code is created by a
 compiler, and was thought not to be a creative work for a long time.
 

 I got a copy of the OS/360 source tapes around 1997, and then sent
 it to Sam Golub to be added to his tape distribution.  The person I
 got it from asked IBM before sending it to me.  I had PL/I (F) and library
 assembled and running on an AT/370 under VM/PC around 1997.
 It does run very slow, though.  

 

 I suspect that the source code to MVS is copyrighted, but not 

 the object code.