On Mon, Dec 20, 2004 at 04:41:58AM -0500, Alicia da Conceicao wrote:
>
> Note that those consumer GPS receivers (serial/USB/CompactFlash) that
> are commonly available ***DO NOT HAVE A PPS FEED***, and hense cannot
> provide precise (>= 1 usec) timing.

That's not entirely true.  At least some of the common chipsets used
in the consumer devices (e.g. the Rockwell chipset) *do* supply a PPS
signal; it may or may not be wired up to the serial port in a given
implementation, and even if it is wired up it may not be _documented_
as being wired up.

Thor