[time-nuts] Low cost GPS module for < 100ns timestamping error

Bob Camp lists at rtty.us
Sun May 4 18:44:39 UTC 2014


Well I do have those Sparc machines sitting over in the shed ….. I suspect hauling over the CRT monitor to go with it would be a bit of a pain. I doubt I would win the “low power GPSDO of the year” award with it. 


Like it or not, once you get to 64 bit math, the “this versus that” hardware questions matter less and less on a GPSDO. The world is awash in CPU’s that will do what you need to do. The real issue is software / firmware. Since GPSDO’s were not a real big deal back in the 70’s and early 80’, there probably isn’t a lot of native GPSDO code for PDP-11’s or SPARC’s. 


On May 4, 2014, at 1:34 PM, Jim Lux <jimlux at earthlink.net> wrote:

> On 5/4/14, 10:07 AM, Bob Camp wrote:
>> Hi
>> Well some of us still have RSX-11M (and RSTS/E) code floating around …..
>> B
> As do I, but the stuff I'd actually reuse is pretty OS independent (signal processing code in FORTRAN, and in reality, I'd most likely rewrite it anyway.)
> I suspect you'll probably not be wanting to port something OS dependent to a SPARC to build a GPSDO...  Then again this is time-nuts, with the emphasis on "nuts".
> _______________________________________________
> time-nuts mailing list -- time-nuts at febo.com
> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
> and follow the instructions there.

More information about the Time-nuts_lists.febo.com mailing list