Earlier quoted context omitted.
Do what I do - copy it forward every couple years onto new media. My oldest files are from 1977 - proof: https://github.com/DigitalMars/Empire-for-PDP-10 My files have gone from magtape to 8" floppy to various 5.25" floppy to 3.5 floppy to zip drives to cdroms to dvdroms, then to hard disks of ever-increasing size. (My old hard drives are completely unreadable now.) I'm sorry I never kept my punch card decks. I'm sur…
Fortran always seems like such an odd looking language to a modern developer like myself, who's learned a fair share of languages. I want to sit down and figure it out one day given how prominent it was (and still is for many critical systems).
There was an earlier Empire I wrote in BASIC, but alas it was lost. Some of its vestiges remain in the Fortran version, such as a variable named Z6. (Variables in that BASIC were one letter and one digit.)