Re: Leap Year Clock Problems?

[dempson@atlantis.actrix.gen.nz (David Empson)]

In article <arogers-0103961312330001@al.gsn.org>,
Al Rogers <arogers@gsn.org> wrote:
> Has anybody else seen this problem?
> 
> I have a FrEdMail system running on a IIe with an AE TimeMaster.
> ProDOS 2.0.1 reports the correct day/time but year 1991.
> Clock set program says clock is set correctly.
> 
> This problem showed up the day after Leap-day.
> 
> Is the timing of this problem coincidental, or is there a problem with
> Apple's algorithm in ProDOS when using thunderclock/timemaster???

There shouldn't be.  It uses a table which contains seven entries, one
per normal year or two for a leap year (five or six years in total).
January and February of the leap year use one entry, March and later
use the other entry.

It is possible that the table in this version of ProDOS ran out at the
end of February 1996, so you will need to run the CLOCK.PATCH program
to update ProDOS to work again for the next few years.  This program
is included on the latest ProDOS-8 system disk, and is able to patch
ProDOS-8 1.9 and later, if I remember right.

-- 
David Empson
dempson@actrix.gen.nz
Snail mail: P.O. Box 27-103, Wellington, New Zealand