> Might be an interesting read for some: Certainly an interesting looking set of papers. I am amused to see in the interrupt one a picture of a non-recommended way of setting interrupt hierarchies, that looks an awful lot like the PIC cascaded register system :)) -- http://www.piclist.com hint: The list server can filter out subtopics (like ads or off topics) for you. See http://www.piclist.com/#topics