New version using VDP 2.8.1 features

The new version of VDP firmware, version 2.8.1, allows the Agon to manipulate fonts in a more flexible way than the previous 2.7.0 VDP. The new method allows fonts to be created, then manipulated, and finally used in a much faster way than previously possible.

This has allowed 2 big updates that are included in this version:

1. The use of the special semi-graphics font (known as font 3) can be switched much faster than previously possible. Instead of reloading the font each time, it's now possible to keep the font loaded and switch without delay.
2. I have been able to create an underlined version of the font based on the regular system font.

And with accented characters:

implementation of SameGame using font mode 3 is now very enjoyable: