Foenix F256 SuperBASIC Part 8a - Custom chars (pre-reqs; dealing with memory and I/O banks)
Foenix F256 SuperBASIC Part 8b - Custom chars (extract, transform, load, sort of...)
Foenix F256 SuperBASIC Part 7 - Intro to Platform Graphic Features
Foenix F256 SuperBASIC Part 8c - Custom chars (closing the topic with a few register tweaks)