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No
Level 7 interrupt?
Yes
No
Mask level 6
or below?
Yes
Figure 5-6 Flowchart of Procedure Up to Interrupt Acceptance in
Program execution status
Interrupt generated?
Yes
Yes
NMI
No
Level 6 interrupt?
Yes
Mask level 5
or below?
Yes
Save PC, CCR, and EXR
Clear T bit to 0
Update mask level
Read vector address
Branch to interrupt handling routine
Interrupt Control Mode 2
No
No
Level 1 interrupt?
No
Yes
Mask level 0?
Yes
Hold pending
No
No
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