> I made a program that is essentially a clock and I use a Pic16F84a.

aaaaaaaargh

> At fixed intervals of time the program call one of tree 
> possible  messages from a table made with the  "DT" directive.
> Al goes well with the fist two messages but when  third message is 
> called the program is resetted and  count begins again from zero.
> If I in the third message I use two character less all run well.
> All messages have a maximum of  5 characters and total program memory 
> used is 253 words.
> 
> What could be wrong?

Are you aware of the role of PCLATH when you write (probably add) to
PCL?

An easy way out for now: forget this chip and go for an 18F. But you
might still want to know what is going on? If so read the datasheet
carefully, the section about PCLATH/PCL.

Wouter van Ooijen

-- -------------------------------------------
Van Ooijen Technische Informatica: www.voti.nl
consultancy, development, PICmicro products
docent Hogeschool van Utrecht: www.voti.nl/hvu
 

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