I posted a new episode of my "Hello, World!" series to YouTube, with my final episode for a 6502 family platform, this time the SNES. Here we are getting to a platform with a lot of similar capability to the X16, with some stuff not as advanced, but many more features that are way beyond it, especially with the capability of using the 65816 16-bit instructions. Enjoy!
If you want to get started with the code, the GitHub link is in the video description.