Thanks for the answare. Yes, I'm interested to the ASM code, I can ( I hope )
 modify
To improve what I wont ( a simple clock that print, on a LCD 2x16, HH:MM:SS
DD:MM:YY ). Please, If you want, send me the code. Thanks. Bye Ciao

-----Messaggio originale-----
Da:     Wynn Rostek [SMTP:war@PALMNET.NET]
Inviato:        domenica 14 dicembre 1997 21.26
A:      PICLIST@MITVMA.MIT.EDU
Oggetto:        Re: Clock/calendar using a 16F84 and LED display (6) HH:MM:SS +k
ey
         to show DATE ( DD:MM:YY)

At 12:27 AM 12/14/97 +0100, you wrote:
>Someone have a simple ASM file like described in the Subject?

I actually did a countdown clock, days, hours, minutes, seconds using a
16c84 driving an LCD display.  I wrote constant execution time code (both
paths of a branch take the same number of clock cycles) and played around
with the seconds and minutes padding until I had less than a millisecond a
day drift from WWV.
(Off by less than a second a year)

I have always wanted to do a regular clock that would keep that kind of
accuracy, (Battery backup so it didn't lose the setting even if power was
down for a week. The countdown timer was battery backed up so power hits
wouldn't affect it. Thats why we used the LCD display, low current draw on
the backup battery.)

I actually started on the code for the regular clock, but never finished it.
I think it still needs one or two routines written.  If you're really
interested I can dig around for the code, but it may take 2 or 3 days to
come up with it.

Wynn Rostek

(P.S.  It was built into a model of the X-33, a new prototype spacecraft
being developed.  It was given to the head of the X-33 effort to put on his
desk to act as a constant reminder of his approaching deadline.)