Viewer for Orcad 4.10 schematic

[jrmymllr]

I have these schematic files that are apparently for Orcad 4.10, according to text in one of the SCH files. I actually know nothing about these files other than they were found on archive.org and might be for a ISA card I have.

I installed the Cadence PCB viewer but am not having luck getting it to work with the Capture viewer. How can I view these? I'd even be happy if someone could convert to PDF, if you are already set up to open these!

EDIT: found that OrCAD is available on archive org and got it installed and working....after lots of trial and error.