I forget all the gory details, but I was able to figure it out from the products site, download page and some of the example programs.
For example, to get the game of life to work I needed to have a alternate font set loaded and that's when I saw what's going on. A 168 memory size can hold up to four font sets. You do have to run a seperate program on your standard Arduino board, four seperate times, loading a different character set each run until all four are loaded into the telly board, if you want all four. Then you can cause font page switches via control codes sent to the telly board from your Arduino board's sketch.
As I said it's a bit fuzzy as it's been awhile, but it wasn't that hard once I read some of the comments in the various programs listed at the telly site.
Lefty