> > > ## Yes you have to reload the TMR0 register each time it reach 00,
> > against
> > > 8051 wich have AUTO-RELOAD timer, 16C84 doesn't have and simply count
> > > from the initial value.
> >
> > Which is a good reason to put the reload code into the ISR, and have it
> > happen automagically.
> >
>
>         Ok, but if I had like to have interruptions to occur each 10ms,
while
> using the prescaler, it's not easy, if I have to keep time, for inst.
>
If I want to do that, I just put a routine in that increments a 16 or 32
bit variable by  10mS every interrupt, then use that value for the RTC (or
inc by 1, and mult by 10 when reading it, preferably)

MikeS