imposed by debugWire itself, so effectively, only flash ROM can be
read and written.
Currently, the required changes to avrdude.conf.in are only present
for the ATtiny44.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk@688 81a1dc3b-b13d-400b-aceb-764788c761c2