Wow, super impressive and cool. He makes it look so easy, but I know from personal experience it's not. He's got some real patience, persistence, and expertise to produce such a smooth and polished demonstration. The minimap navigation looks highly useful given the low resolution.

Story time: Back in highschool, I downloaded and printed TI-82 source code for a version of DOOM. The thing is, I had no money to acquire the requisite serial cable, nor know-how about how to connect it to a Mac to load anything. A Macintosh Performa 550 was the only computer I had access to, and possibly it wasn't even supported by TI at the time (almost nothing I really wanted was! The chronic limitations did encourage me to become really proficient with HyperCard, though).

I carefully entered the 45 pages of source code into the calculator, double checked it, and guess what happened next? -- it didn't work! I was pretty disappointed but not entirely surprised. Eventually, without a path forward, I abandoned the quest.

Afterthought: Is there a similar way to get an original PalmPilot onto Wi-Fi and the Internet?

Edit: Apparently the answer is "yes", and no ESP32 hacking required. https://www.oreilly.com/library/view/palm-and-treo/059610054....