the easiest way is to  open a new watch window , pick gpio from the list
change the data (press read , modify it , press write)

Peter

-----Original Message-----
From: Glen <electme@TIG.COM.AU>
To: PICLIST@MITVMA.MIT.EDU <PICLIST@MITVMA.MIT.EDU>
Date: Sunday, May 23, 1999 2:22 AM
Subject: mplab-step prob?


>hi & thanks for your time,
>
>i'm using mplab to step through a program for a 12c508a.(using step)
>i get to the part of code to test for zero crossing.(code below)
>
>chcycs    btfsc    gpio,3    ;check for 0
>          goto     chcycs
>lw        btfss    gpio,3    ;check for 1
>          goto     lw
>
>when i get to chcycs it just locks into chcycs.
>even when i use step over it still does the same , gets locked !
>
>how do i get past these 2 loops to keep checking the rest of the
>program.
>i've tried stimulus pins but didn't work !
>
>i've been reading mike predkos book "programming  & customising the pic
>microcontroller" & shows how to use dos sim.
>
>i'm having trouble with the windows simulator.
>
>any good information on how to use windows mplab.
>a decent tutorial would be good.
>
>thankyou for your time
>glen