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decrementer exception(0x900).

Question asked by Vijay B on Sep 18, 2017
Latest reply on Sep 20, 2017 by Serguei Podiatchev

This is with regard to POWEPC MPC 8555


We are observing the decrementer exception(0x900), resulting in board reboot


About Decrementer exception from datasheets
The decrementer will cause an exception when it rolls over from all zeros to the LSB being set high again to begin the counting process.

My Question
Wanted to check with you experts, that DECR should be loaded before the count reaching to 0x0000?

We are seeing this exception only now(one time occurence) from the history of last 10-15 years.

If you have more detail, can you please share