Hi Antoine & Andy,
thanks for the suggestion !
Of course a rotary switch would have been more reliable ( and more professional-looking ;-), but the DIP switches was cheaper and during construction, I kept in mind the use of the components I already had, like EPROM and DIP switches ;-)))
But it's an excellent idea, and I'll dig in it ! Also the use of a separate board could be a huge ergonomic improvement.
OK, there's still some work to do and stuff to play with !
Chris
