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You'd be amazed at how little the underlying ecosystem has changed over the decades. Because it basically keeps compatibility forever, software that was written
by bigato 7y ago
You'd be amazed at how little the underlying ecosystem has changed over the decades. Because it basically keeps compatibility forever, software that was written in the 60's can still run on modern machines. Because of this, learning using 80's software in the mainframe world is not too bad. For example, I keep a book on MVS on my desk from the 80's for reference, and most of the time it suffices for what I need to consult.
- tyingq 7y agoAt a high level, I suppose, but for example...3.8j is 24 bit versus the current z/os 64 bit.
- bluecmd 7y agoIndeed, the 16 MiB virtual memory space is kind of limiting for anything remotely modern :-).
- bigato 7y agoIt teaches efficiency to learn the basics on such a system, something modern programmers are often lacking
- bigato 7y agoIndeed the last official MVS freely available is 24 bit, but then you have stuff like MVS380, which supports 31 bit and has 64 bit support in the works. http://mvs380.sourceforge.net/ http://mvs380.sourceforge.net/