Nice article, thanks!

Minor nitpick: PUN is not a device in Windows 11 (I haven't tested on previous versions). > echo hello>pun: > type pun hello

In the section about paging, are there actual systems working in the megabyte range?

PUN wasn’t even in MS-DOS. However, later versions of CP/M used AUX instead of PUN, which DOS adopted and still exists in Windows.

It's been a lot of years, but as I recall, the raw I/O devices had one set of names, and the logical devices had another. So things like STAT PUN:=PTP: (if I remembered the syntax correctly) would set the logical "punch" device to be the physical paper tape punch, which was the default. I may also be confusing CP/M I/O redirection syntax (which only worked if your BIOS supported it), with DEC RT-11 syntax. It has been over 40 years since I have used either one.

I'm working on tools to backup problems and analyses, including images and sample inputs: https://github.com/ghuysmans/ccwg-archive. Their API is open.

Do you know any other projects working on something like this? I imagine most commenters here would be very grateful for a google competition archive. The reason I'm asking is that I'm very surprised to see your repo/project with so little attention (in this thread and on GitHub).