Hello anbar,

first, turn off frames on your email. it makes everyone crazy.

second, what speed is your clock?  without that, you cant calculate
the loops.

third, write a loop that makes a known delay.  for a 4 mhz clock, a
250 msec delay is nice.  this needs an inner and outer loop,

stall
 movlw   .250
 movwf   acount
outer   movlw   .110
 movwf   bcount
inner   nop
 nop
 nop
 nop
 nop
 nop
 nop
 decfsz  bcount,f

 goto    inner
 decfsz  acount,f
 goto    outer
 return

now you need this 4 times a second, and (60*5) times for 5 minutes.
because timer0 only runs 0 to 255, you are stuck for how you will set
the countdown, because you cant set for all the seconds. if a
2-second resolution is ok, then timer0 will work once you have the
internal delay set up.

good luck
alice


> From:          Anbar <anbar@WN.COM.BR>
> Subject:       Again delay from 1sec to 5 min.
> To:            PICLIST@MITVMA.MIT.EDU

> Hi all,
> I am executing a project with the PIC16F84 and I need a routine in ASM that
> causes a delay from 1sec to 5min, using the TMR0. Could somebody help me?
> I will be thankful.
>
> Anbar
>
>