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-----Original Message-----
From: [email protected] <[email protected]> On Behalf Of Mike
Alexander
Sent: Tuesday, March 26, 2024 11:57 PM
To: [email protected]
Subject: Re: [H390-MTS] Does d6.0 have any definitions for TCP/IP Services

You're right, D6 seems to contain some version of the HIM code. This is a
surprise to me, I had thought all this time that it didn't appear in MTS until later.
The ultimate reference for questions like this is the driver file which is
guaranteed to be correct since it was used to write the tapes and disk pack. It
contains entries for the HIM code. I don't know how well it works in that
version, but there is at least some chance that D6 will support TCP connections
in Hercules when the HIM code is finished.

The copyright question is complicated. It's also not the only question that is
relevant, either. There may be other legal restrictions that apply to these
programs. Do you have any reference for the idea that IBM let these go into the
public domain?

Not a chance. The only mainframe code IBM has "released to the public" was APL but its not public domain, it’s a very restrictive licence.
Modified versions are not allowed so people jump through hoops to provide code to patch it.

Mike

Dave
G4UGM