Sat Sep 22 19:42:35 CEST 2007

work to do

* documentation
* bootloader (+- DONE)
* independent of emacs?

preparing for waag & piksel, the most important problem to solve is to
make the bootloader robust. this is probably best solved as:

    serial cable  plugged -> start console
    unplugged (i.e. with jumper to gnd) -> start app (at 0x200 hex)
    all interrupt vectors moved to 0x200 block

then this block can be made write-protected, so there's absolutely no
way to mess it up -> can eliminate ICD2 connector on boards.