Program execution state
No
Interrupt generated?
Yes
Yes
NMI?
No
No
I = 0?
Hold pending
Yes
No
IRQ0?
Yes
No
IRQ1?
Yes
TEI2?
Yes
Save PC and CCR
I ← 1
Read vector address
Branch to interrupt handling routine
Figure 3-5 Flowchart of Procedure Up to Interrupt Acceptance in
Interrupt Control Mode 0
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