111
Yes
Program execution status
Interrupt generated?
NMI
Level 6 interrupt?
Mask level 5
or below?
Level 7 interrupt?
Mask level 6
or below?
Save PC, CCR, and EXR
Clear T bit to 0
Update mask level
Read vector address
Branch to interrupt handling routine
Hold pending
Level 1 interrupt?
Mask level 0?
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
No
No
No
No
No
Figure 5-6 Flowchart of Procedure Up to Interrupt Acceptance in
Interrupt Control Mode 2