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CHAPTER 4 RESET AND "EIT" PROCESSING
■ "PC" Values Saved for Non-maskable Interrupts
When an "NMI" is accepted by the processor, those instructions in the pipeline that cannot be interrupted in
time will be executed. The remainder of the instructions will be canceled, and will not be processed after
the interrupt. The "EIT" processing sequence saves "PC" values to the system stack representing the
addresses of canceled instructions.
■ How to Use Non-maskable Interrupts
The following programming steps must be set up to enable the use of "NMI".
(1) Enter values in the interrupt vector table (defined as data).
(2) Set up the "SSP" values.
(3) Set up "TBR" values.
(4) Set up the appropriate value in the "ILM" field in the "PS".