Map usage times for a week.
In the middle of a non usage time type the string of characters that are first typed at the start of usage time.
Then open a browser using keyboard shortcuts (does Win+R open a browser in Windows if you type a URL in?) , type a URL, type in all learned username password combos, close browser using keyboard shortcuts.
Lots of expensive industrial equipment runs these kinds of processors still. You can still buy motherboards with 8 bit ISA slots even, although you’ll pay quite a premium.
But all of that kind of gear typically runs its own distro with an in-house build system. For example, my work uses a flavour of Buildroot for their embedded Linux systems and you can just set whatever processor type you like all the way back to plain old i386 when you build it.