Figure 5.4 Flowchart Of Procedure Up To Interrupt Acceptance In Interrupt Control Mode 2 - Renesas H8S/2437 Hardware Manual

Level 7 interrupt?
Mask level 6
Figure 5.4 Flowchart of Procedure Up to Interrupt Acceptance
Rev. 1.00, 09/03, page 84 of 704
Program execution status
Interrupt generated?
Yes
No
Yes
Level 6 interrupt?
No
or below?
Yes
Save PC, CCR, and EXR
Update mask level
Read vector address
Branch to interrupt handling routine
in Interrupt Control Mode 2
No
Yes
NMI
No
No
Yes
No
Mask level 5
or below?
Yes
Clear T bit to 0
No
Level 1 interrupt?
Yes
No
Mask level 0?
Yes
Hold
pending