I own a number of old(er) systems programming manuals, JCL books, and even a couple of COBOL handbooks from a few years ago when I was playing around with hercu

I own a number of old(er) systems programming manuals, JCL books, and even a couple of COBOL handbooks from a few years ago when I was playing around with hercules [1]. I had a ton of fun (from a hacker perspective). I recommend playing around with it, if only to get a look at how different things can be. [1] http://www.hercules-390.eu/ http://www.hercules-390.eu/ http://www.bsp-gmbh.com/turnkey/ http://www.bsp-gmbh.com/turnkey/