Here is a zipfile with all the required elements (except for Tera Term itself) to perform supercharger autoloading.

When I ran the Supercharger programming contest I was hoping someone would run with this idea. The good thing about this is that it is forward-compatible. As long as your game only uses one controller port, you can leave these hooks in and it won't hurt anything for CC2 or Chimera (when the time comes). So if you were writing a large Supercharger game you could do it knowing that you'd have autoload goodness across all Supercharger compatible players. It sets the bar a little higher if you want your game to have maximum compatibility.

If someone could come up with a more universal cross-platform solution I'd appreciate it. The main concept is being enhanced for use with Chimera. Serial loads on Chimera may not be a very popular option with microSD available but it may still be more convenient to assemble your assets on the PC and be able to refresh via serial rather than having to copy to microSD and swap it back and forth between a card reader and the cartridge. It could also be useful for future standalone Chimera titles if the microSD sleeve is not installed on them for cost-cutting reasons. As long as they have access to the main serial port they would be able to play games via this serial-based fileserver.