SD card -image- for the beaglebone

[Tim Kientzle]

> 
> Well, besides running a little roll-your-own clock ensemble system, a
> more mundane use of multiple PPS inputs would be simple failover for
> ntpd.  At least, I think in theory it should work fine to configure ntpd
> with multiple refclocks and if one goes bad it can continue with others.

Hmmm… I think I would instead have multiple
BeagleBones, each with a single PPS input and
each acting as an independent NTP master.

If one goes bad, the NTP clients will fail over
to use another master.

Tim