Rodolfo Giometti wrote: Regarding the serial port, which version of LinuxPPS are you referring to? This is in a 2.6.31 kernel (from Fedora), with your series of 9 patches applied and all the PPS options enabled. I have used modules pps_core and pps_ldisc. "ldattach 18 /dev/ttyS0" and S2. Do you need any more information? -- Graeme Hilton