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FUJITSU FR family 32-bit microcontroller instruction manuel CM71-00101-5E User Manual

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CHAPTER 4 RESET AND "EIT" PROCESSING

Priority of Multiple Processes

When the acceptance of an "EIT" source results in the masking of other sources, the priority of execution of

simultaneously occurring "EIT" handlers is as shown in Table 4.6-2.

*: When "INTE" instructions are run stepwise, only the step trace "EIT" is generated.

Sources related to the "INTE" instruction will be ignored.

Table 4.6-2 Priority of Execution of "EIT" Handlers

Priority

Source

Masking of other sources

1

Reset

Other sources discarded

2

Undefined instruction exception

Other sources disabled

3

Step trace trap

ILM = 4 *

4

INTE instruction

ILM = 4 *

5

NMI

ILM = 15

6

INT instruction

I flag = 0

7

User interrupt

ILM = level of source accepted

8

Coprocessor not found trap

Coprocessor error trap

None