first pull /RESET low for a short period of time before enabling the
buffer chip. This sequence allows the AVR to be reset before the
buffer is enabled to avoid a short period of time where the AVR may be
driving the programming lines at the same time the programmer tries
to. Of course, if a buffer is being used, then the /RESET line from
the programmer needs to be directly connected to the AVR /RESET line
and not via the buffer chip.
git-svn-id: svn://svn.savannah.nongnu.org/avrdude/trunk/avrdude@156 81a1dc3b-b13d-400b-aceb-764788c761c2