CHAPTER 7 INTERRUPT/EXCEPTION PROCESSING FUNCTION
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Figure 7-8. Example of Processing Interrupt Requests Simultaneously Generated
Default priority
a > b > c
Main routine
EI
Interrupt request a (level 2)
Interrupt request b (level 1)
Interrupt request c (level 1)
Processing of interrupt request b
•
•
Processing of interrupt request c
Processing of interrupt request a
Interrupt requests b and c are
acknowledged first according to
their priorities.
Because the priorities of b and c
are the same, b is acknowledged
first because it has the higher
default priority.
Summary of Contents for V850E/MS1 UPD703100
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