HD6433937 Datasheet, PDF (88/521 Pages) Hitachi Semiconductor – Hardware Manual

Program execution state
No
IRRI0 = 1
Yes
No
IEN0 = 1
Yes
No
IRRI1 = 1
Yes
No
IEN1 = 1
Yes
No
IRRI2 = 1
Yes
No
IEN2 = 1
Yes
No
IRRDT = 1
Yes
No
IENDT = 1
Yes
No
I=0
Yes
PC contents saved
CCR contents saved
I←1
Branch to interrupt
handling routine
Notation:
PC: Program counter
CCR: Condition code register
I: I bit of CCR
Figure 3-3 Flow up to Interrupt Acceptance
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