I think you have stumbled upon a bug in mplab here , Initially I did not try
this and gave you general info on how to change the bit

The function of the pin should be determined by the config word
either it is the mclr input or a general purpose input

The assembler does generate a different hex file though i did not try to
check the hex file out my guess is this works
HOWEVER no matter which hex file you simulate you cannot change the bit any
using asynchronous stimulus i can always reset the processor, not change the
status of the general purpose pin

I think you should report this as a bug to microchip

Peter

From: Glen <electme@TIG.COM.AU>

-----Original Message-----To: PICLIST@MITVMA.MIT.EDU
<PICLIST@MITVMA.MIT.EDU>
Date: Sunday, May 23, 1999 11:31 AM
Subject: Re: mplab-step prob?


>Peter van Hoof wrote:
>
>> the easiest way is to  open a new watch window , pick gpio from the list
>> #### double click the gpio in the watch window at this point
>
>
>
>> change the data (press read , modify it , press write)
>
>
>
>HI PETER,
>i tried double click the gpio in the watch window . didn't do a thing !!!
>
>ok , got to the stage of press write.after i double clicked the address
>
>when i press step or stepover it still just loops back again.
>
>**** how do i step over this code ? ***to test the rest of my program !!!!
>
>chcycs    btfsc    gpio,3    ;check for 0
>          goto     chcycs
>lw        btfss    gpio,3    ;check for 1
>          goto     lw
>
>thanks for yoru time
>glen