On archive pages, look for the Download Options section on the right side of the page to find the specific .zip file.
The Internet Archive uses automated checkers to remove malware, but you should always scan old software before running it. Isis-1.02-pc.zip
ISiS is also a configuration format for certain music rendering software. Safety and Downloading On archive pages, look for the Download Options
While the "pc.zip" suffix strongly suggests the vintage video game, the term "ISIS" appears in other technical contexts: On archive pages
If you are looking to download or use this file from an archival site:
Integrated Software for Imagers and Spectrometers (ISIS) is used by USGS Astrogeology to process planetary image data.