Datasheet

Section 5 Interrupt Controller
Rev. 4.00 Sep 27, 2006 page 142 of 1130
REJ09B0327-0400
Program execution state
Interrupt generated?
NMI?
Control level 1
interrupt?
IRQ0?
IRQ1?
PS2IC?
IRQ0?
IRQ1?
PS2IC?
UI = 0?
Save PC and CCR
I ← 1, UI ← 1
Read vector address
Branch to interrupt handling routine
Yes
No
Yes
Yes
Yes
No
No
Yes
No
Yes No
Yes
Yes
No
No
Yes
Yes
No
Hold pending
I = 0? I = 0
Yes
Yes
No
No
Figure 5.10 Flowchart of Procedure Up to Interrupt Acceptance in
Interrupt Control Mode 1