Character sets (Atari 800 and BBC Micro/Master/Electron)

It's still surprising how often NOT standard ASCII is ;)

In other words, I have the first tentative versions of Dungeon of Commodore for Atari and BBC/Master/Electron.

While Electron feels slow due to not having a memory address I can just pump full of character bytes, at least it will hopefully have a version. Optimizing around these constraints is much easier than starting from zero!