Re: latest ProDOS 8/Basic System ?

["william strutts" <wrstrutts1@nospam.home.com>]

"Michael J. Mahon" <mjmahon@aol.com> wrote in message
20010725002446.25076.00002073@ng-fo1.aol.com">news:20010725002446.25076.00002073@ng-fo1.aol.com...
> william strutts wrote:
>
> <snip>
> >Prodos has a date table which needs to be updated every seven years.
>
> Actually, the table is seven entries long (indexed into by day of week),
> but it can map only 5 or 6 years, depending on whether the range contains
> one or two leap years.
>
> Each leap year occupies two slots in the table.  So if the first or second
> year is a leap year, then the fifth (probably!) also is, and they consume
four
> slots, leaving only three other slots for the intervening non-leap years.
> If the first is a leap year, then five full years will be mapped.  If the
> second
> is a leap year, then five full years will be mapped plus part of the sixth
> (the part before February 29).
>
> If the first or second year is not a leap year, then only one leap year
falls
> in the range of the table, and five non-leap years can be accomodated for
> a total of six years.
>
> -michael
>

Youch!  Sounds complicated.  I was told that it had to be done
once every seven years.  I guess they were wrong. I was just
passing on information that I was given.

--
--
William R. Strutts - wrstrutts1@nospam.home.com - Whatever!

C'est moi!  http://www.facelink.com/wrstrutts

Just hacking away...

Remove nospam to reply.