In message <[EMAIL PROTECTED]>, Bruce Griffiths writes: >Poul-Henning Kamp wrote:
>Since USB and Firewire ports may persist a little longer, is it possible >to use similar techniques with these interfaces? For talking to the timestamping device: certainly. For signalling the computers time-edge: no way, they're serial protocols. >Do you mean that the PCI66XX boards could be used to implement the >multichannel timestamp function? Yes, they have counter and latches that I belive a suitable for at least two signals, but I'm not sure there were any usable prescalers. It was a long time ago. I'm not sure what kind of flanks plastic fibers (as used for instance from CD-players) have, I might go that route to get complete electrical separation. I saw a HP eval kit with 3' of plastic fiber and transmitter and receiver that would work great. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 [EMAIL PROTECTED] | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
