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Re:How to ensure that your program does not run under Window... by raverbashing on Wednesday June 03, 2020 @07:36AM (#23402259)
Is it actual binary compatibility? Or it is something higher-level?

(to be honest going from DOS to Windows is a different problem, though that doesn't justify the atrocities shown in the document :) )

Re:How to ensure that your program does not run under Window... by Nursie on Wednesday June 03, 2020 @07:41AM (#23402292)
They do have a binary backward compatibility date sometime in the 1960s, possibly 1964.

But from what little I remember from my intro-to-mainframes day at big blue many years ago, I think it's like some sort of multi-layered emulation now, to run code that's that old. But your "Hello World" program built on OS/360 released in 1964 will still run on modern Z/OS, or so I'm told.

Of course they're not desktop systems! (I'd hate to see the desk...)