Easiest way to 'add' new characters/graphic symbols?

Harley

Is it possible to generate additional characters for display?

If so, what would be an easy way to do so?

I'd like to have several different graphic symbols.

▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
Harley Shanko
h.a.s. designn

Mike Green

This depends on what kind of display you're using. Some of the VGA drivers use their own font tables and you can easily modify them. The graphics driver (for TV or low-res VGA) has its own font table. The other drivers use the built-in ROM font, but they're all "tile-driven". In other words, the display buffer actually contains pointers into the ROM font table and you can override this and point to your own character "tile" 16 x 16 pixels or 16 x 32 pixels in size.