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C167 WDTCON reset indicator flags are not working

On reset recovery of the c167 controller i am reading wdtcon reset reason indication flags before EINIT instruction execution (Startup file).

Flags are allways set to 0. due to this unable to identify the reset cause on recovery

Bidirection reset bit in SYSCON register is set to 0.

WATCHDOG_STATUS is location in Non intilized memory location in RAM where i am writing the signature after checking the WDTCON.

Controller version is B0

Please let me know do i need do something extra