An image recently appeared on my computer, taking me back to 1979—my first year in IT as an operator on a National CSS (NCSS) 3200. Nicknamed the “mini-370,” it had more memory than IBM’s System/370 and ran VP/CSS, an advanced version of IBM’s CP/CMS developed by NCSS. IBM later incorporated VP/CSS’s innovative architecture into CP/CMS, … Continue reading From NCSS 3200 to Z16 – My Career Evolved with the Mainframe