For anybody who already has a Wiz, here is something to try if you are bored. For everybody else, maybe it will be interesting to look at, who knows?

libcastor is a small library designed to give direct hardware access under Linux on the Wiz. Somewhat similar to Minimal Library on the GP2X, however it is a bit simpler to use and doesn’t require that you include the source into your tree (so if there were a hardware update and you had dynamically linked for example, a new library could simply be copied over to deal with any changes).

It is currently usable, though not complete (no alpha blending etc.). The README has a bit of information, though the documentation it refers to does not yet exist . Just look through for now, it has information on all the functions and constants included as comments.