And it's looking like the overscan bounds and offset calculation will need to be correct.
Otherwise, things will break.
Let's see what happens when I get command 0x02 working...
The thing that isn't implemented is the actual snapshot capture.
But the dimensions should be correct.
I am feeling a bit iffy about the overscan, though.
Reads and writes mostly do nothing but log, although the status returns a dummy value of 0x04 (no command in flight, not waiting for anything, and no errors).
