> On May 7, 2018, at 8:42 AM, Joel C. Ewing <jcew...@acm.org> wrote: >> ——————————SNIP------------------------------------------------------- > One of the big advantages of IBM mainframes (since S/360) has been > upward compatibility for application code. Unlike other platforms, you > don't have to redesign application assembly code or re-compile all > application programs just because of an operating system upgrade or an > architecture upgrade. Documented application code interfaces continue > to be compatible. Well…. you should change the wording a bit. Except for COBOL and COBO-le issue(s)… and… Sorry.. I think COBOL should be listed as a unique entity and deserves to have its own hall of shame. >
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