Jan-Erik,
     There is no activity on either PORTA or D. The blip that I see is=20
probably just the pin burbbing on application of the power. I know that=20
the chip is running because the OSC is running.
     Well I have reduced this to the absolute minimal code. Here it is:
             #pragma config FOSC =3D HS, #pragma config WDTE =3D OFF,=20
#pragma config PWRTE =3D OFF
             #pragma config BOREN =3D OFF, #pragma config LVP =3D ON,=20
#pragma config CPD =3D OFF
             #pragma config WRT =3D OFF, #pragma config CP =3D OFF

             ADCON1 =3D 7;
             CMCON =3D 7;

             PORTA =3D 0;
             PORTD =3D 0;

             TRISA =3D 0;
             TRISD =3D 0;

             en =3D 0;
             Init:
                 PORTA =3D 0;
                 PORTD =3D 0;
                 wait(5);
                 PORTA =3D 1;
                 NOP();
                 NOP();
                 NOP();
                 PORTD =3D 1;
                 NOP();
                 NOP();
                 NOP();
                 wait(5);
             goto Init;
It doesn't get much simpler than that. There is a 8MHz crystal hooked up=20
to the OSC pins. It is running at 7.9997 MHz. The caps =3D 47pF. As per=20
the data sheet the FOSC =3D HS. Almost everything else is turned off. What=
=20
do you think? Any ideas from anybody?
Thanks,
rich!

On 10/20/2015 10:00 AM, Jan-Erik S=F6derholm wrote:
> Exactly *what* was unclear from page 349 in the XC8 manual !?
>
> Your question make be believe that you never bothered to
> check page 349 (or anything else in the manual, I guess).
>
> Good luck.
>
>
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
> Synopsis
>   #include <xc.h>
>   NOP();
> Description
>   Execute NOP instruction here. This is often useful to fine tune delays =
or
>   create a handle for breakpoints. The NOP instruction is sometimes requi=
red
>   during some sensitive sequences in hardware.
>
> Example
> #include <xc.h>
>   void crude_delay(unsigned char x) {
>   while(x--){
>    NOP(); /* Do nothing for 3 cycles */
>    NOP();
>    NOP();
>   }
> }
> =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D
>
>
> Jan-Erik.
>  =20
>
>
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.