MiSTer FPGA Forum

Here's a link to the official unveil video for the Taito Egret II mini. 16 seconds in to the video there are a few seconds of footage of this controller. It gives a better indication of its size.

I wonder if this rollerball and spinner controller will be or can be made compatible with the MiSTer and with games that use these types of controls.

https://www.amazon.co.jp/dp/B096FL5VXC/