Hello, here my last patch for PPS support. I merged all notes received in these days, also I added a (possible?) fix for the problem pointed out by Roland. If you think it's ok, please let me know so I can release version 5.0.0 for inclusion. On the userland side some NTPD's reference clock has been tested and they are working without patches (but one)! :) Ciao, Rodolfo -- GNU/Linux Solutions e-mail: giometti@enneenne.com Linux Device Driver giometti@gnudd.com Embedded Systems giometti@linux.it UNIX programming phone: +39 349 2432127