First, enable portb change interrupts in your 'init' routine:
        bsf     INTCON, RBIE    ; enable portb change interrupt
        bsf     INTCON,GIE      ; enable global interrupt

Now at the end of your code include this:
intH    CODE            0x08            ; high priority
        GOTO            button
  =20
intL    CODE            0x18            ; low priority
        GOTO            button
So now your 'button' routine will manage the interrupt.

In your 'button' routine read the contents of PORTB to ensure
the change on PORTB was because your button is pressed,
do whatever you want, and return with 'retfie' instead of 'return'.

Finally, in your 'loop' routine erase the call to 'button':
loop   call    show                 ; displayed time
       goto   loop

Hope this helps,
Carlos Ojea
    -----Original Message-----
    From: =C5ke Neehr <ake.neehr@TELIA.COM>
    To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
    Date: lunes 28 de enero de 2002 18:38
    Subject: [PIC]: Interruptroutine
   =20
   =20
    Hello PIClisters!
   =20
    Can anyone be kind to help me with
    to put in a interruptroutine in this code
    so the printout will works even if you
    push the button again before the print=20
    and decode routine is finished.=20
    Now I have to wait to this routine is
    finished before the pushbutton will works!
   =20
    Kind regards
   =20
    =C5keN

--
http://www.piclist.com hint: The PICList is archived three different
ways.  See http://www.piclist.com/#archives for details.