On 6/10/2011 2:48 PM, David Novak wrote:
> I'm using the ICD2 and MPLAB with a PIC18F4523. I was seeing odd
> behavior while single-stepping, so I created the following, very simple
> application.
>
> void main()
> {
>     TRISB =3D0b11111101;
>
>     while( 1 )
>     {      =20
>         RB1 =3DRC1;
>     }
> }
>
> The only other thing in the file are the Hitech macros to setup the
> configuration registers.
>
> If I let the program run, RB1 follows RC1 as expected. However, if I
> single step while watching the PORTC register, the debugger only updates
> the register value when I execute the RB1 =3DRC1 line.
>
> When I change the state of the RC1 pin, and choose Refresh from the
> Special Function Registers view, the value shown for the PORTC register
> doesn't change.
>
> Is this normal behavior?
>
> Thanks,
> David
>

Update...

We've verified the same behavior with ICD3.

We also see it with multiple versions of MPLAB.

It acts like a configuration file or mapping file somewhere in the
debugger isn't quite right.
--=20
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