I'm starting a new design and all my components are metric based, including a few 1mm pitch BGA components. I'd really like to do the layout in metric, but I'm worried about two factors. The first of which is that PCB does not yet have the option to store things internally in metric (at least from what I understand) so rounding may occur on that end. In addition, my board house rounds everything to 2.4 format (0.1 mil). I can envision several scenarios where my design meets DRC in PCB, but fails when I send it to the board house.
What is my best option? Just use imperial units and cope with weird grids? Use metric spacing, but recalculate DRC based on worst case rounding? Some other option? _______________________________________________ geda-user mailing list geda-user@moria.seul.org http://www.seul.org/cgi-bin/mailman/listinfo/geda-user