Markus Rohe wrote:

> > ahilleas schrieb:
> >
> > I have have the following program and one LED connected to every port
> > pin. All pins are outputs. The problem is that LEDs connected to
> > RA4/TOKI and RB4,5,6,7 don't blink. During the simulation everything
> > seems to work. I have MPLAB V3,40.
> >
> >
> >
> >      list p=16f84
> >      #include "p16f84.inc"
> >
> > porta equ 05
> > portb equ 06
> > status equ 03
> > trisa equ 85
> > trisb equ 86
> >
> > del equ 20
> > del1 equ 21
> >
> >      org 0
> > start
> >      clrf porta
> >      clrf portb
> >      bsf status,5
> >      clrf trisa
> >      clrf trisb
> >      bcf status,5
> >
> > start1
> >      incf porta
> >      incf portb
> >      movlw h'01'
> >      movwf del1
> > delay1
> >      movlw h'01'
> >      movwf del
> > delay
> >      decfsz del
> >      goto delay
> >      decfsz del1
> >      goto delay1
> >
> >      goto start1
> >
> >      end
> >
>
> Hello Ahilleas
>
> your values in your delay routine are much too small. I assume you run
> your PIC @ 4 Mhz, so the chip only needs 1µs to process one command.
>
> I'll send you a sample delay code for 0,5s. A table management is also
> included :-). I hope you'll understand it, the comments are in German
> :-(
>
> friendly regards
> Markus
>
>   ------------------------------------------------------------------------
>                   Name: delay05.asm
>    delay05.asm    Type: ASM File (application/x-unknown-content-type-asm_auto_file)
>               Encoding: base64

here is some more delay routines that you might find handy.