Hello!

>>                 - The 36 * 8 General Purpose RAM (GPR)
>>                 - And the 64 * 8 EEPROM DATA memory, what is it used for?

About the GPR... I think we use it for our vairables right? If so, how do I
define, lets say a variable named COUNT at the beginning of the mem? Do we
have to define the lenght of the variable or is it fixed?

>So the overflow is connected to an TMR0 overflow bit that gets set to a 1
>each time the timer overflows. And like all other interrupt driven bits in
>the PIC, it has a TMR0 interrupt enable, and the Global Interrupt Enable. So
>if both the TMR0 interrupt enable and the GIE are on, and an overflow occurs,
>then the PIC is interrupted.

Anhh... this explains it all! At last I understand the timer! Thank you
very much for the explanations and exemples...

>Be sure after detecting an overflow that you set the TMR0 overflow bit back
>to zero so you can detect the next overflow and get out of the interrupt (
>if you decided to use it) cleanly.

Oh ok... but when a timer overflow occurs, the TMR0 overflow bit gets set and
the GIE bit cleared right? And in order to get things back I have to clear
TMR0 overflow bit and set GIE?

Well.. thanks again!

Jean-Francois
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Jean-Francois & Alain Joly
jolyal@capitalnet.com