Example Of Processing Interrupt Requests Simultaneously Generated - NEC V850/SA1 mPD703015 Preliminary User's Manual

Figure 5-9. Example of Processing Interrupt Requests Simultaneously Generated
Interrupt request a (level 2)
Interrupt request b (level 1)
Interrupt request c (level 1)
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CHAPTER 5 INTERRUPT/EXCEPTION PROCESSING FUNCTION
Main routine
EI
Processing of interrupt request b
Processing of interrupt request c
Processing of interrupt request a
• Interrupt request b and c are accepted
first according to their priorities.
• Because the priorities of b and c
are the same, b is accepted first
because it has the higher default
priority.