this post was submitted on 19 Nov 2023
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    [–] banneryear1868@lemmy.world 3 points 11 months ago (1 children)

    I only run z/OS on an IBM mainframe.

    [–] Gork@lemm.ee 4 points 11 months ago* (last edited 11 months ago) (1 children)

    Mmm too modern for my tastes. Gotta go with the Lyons Electronic Office LEO I OS from 1951.

    It would need punch card malware lol.

    Ooh let's go back even further to ENIAC in 1945.

    [–] banneryear1868@lemmy.world 2 points 11 months ago

    It's nice you could just solder in new components.

    Tru64 and SunOS are furthest I go back I think, Commodore KERNAL/BASIC technically.

    Obscure OS you could actually run today could be Solaris...