[ntp:questions] Re: Z3801 Leapsecond bug - Sep 30?
shoppa at trailing-edge.com
shoppa at trailing-edge.com
Thu Sep 1 12:48:00 UTC 2005
Martin -
I do not believe that this leap second bug is the same as the
256-week "bug" that has occured before.
I believe that this bug comes about because the firmware writers
"knew" that leap seconds come on March 31, June 30, September 30, or
December 31. So they assumed a leapsecond announcement in August must
mean that the leapsecond occures on September 30. I have not actually
disassembled the Oncore or Z3801A firmware so I don't know this for a
fact, but it's a better match to my observations that the 256-week bug
which also afflicts some of the involved firmware :-).
You are welcome to correct me if I'm misunderstanding how the 256-week
rollover contributes to this problem. It certainly could be a factor
but I don't see it as necessary.
What happened to Oncores/Z3801A's in 1998 with a similar
announcement-more-than-3-months-in-advance via GPS?
Tim.
More information about the questions
mailing list