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If I use this command wdtcon = 0x01; to start the watchdog timer , the project wont compile. I get the following error messages.

Employing 18F4550 errata work-arounds:
* Corrupted fast interrupt shadow registers
(908) exit status = 1
(908) exit status = 1

It works on flowcode 6


thanks

Hi Roy,
Have you seen this

Martin

thanks , I was just about to post that I did the following and it works.
WDTCON |= 0x01;

I did not realise it was the upper caps, I thought it was the | that did it.

ok I removed the | character and it now works,
its simply the upper case.
do you possibly know what the character | does.
I found that command on the microchip website.

Roy Johnston wrote: do you possibly know what the character | does.
I found that command on the microchip website.

The pipe '|' symbol is logic or, in the assignment you were using it takes the original value of WDTCON and performs a logic OR with 0x01. (Sets bit 0 of WDTCON if not set, leaves it set if already set.)
The assignment is shorthand for WDTCON = WDTCON | 0x01

Thank You