Hi Peter,

I don't believe a stack underflow is the cause of the problem I'm currently experiencing. Also since I can get the WDT reset to work under some circumstances, I now believe the hardware must be working properly.

I now have two test cases, one works and the other doesn't, and the only difference (in my source code) is the addition of a data structure (which isn't used) in the failing case. I have compared the code listings of both, and the only differences between the two are the expected differences in variable addresses due to the extra data structure.

Unfortunately, I can't see anything wrong with the cstartup code either, so I'm still looking for a solution.

Dennis