Figure 5.9 Flowchart Of Procedure Up To Interrupt Acceptance In Interrupt Control Mode 1 - Renesas H8S Series Hardware Manual

Section 5 Interrupt Controller
IRQ0

Figure 5.9 Flowchart of Procedure up to Interrupt Acceptance in Interrupt Control Mode 1

Rev. 3.00 Jul. 14, 2005 Page 116 of 986
REJ09B0098-0300
Program execution state
Interrupt generated?
Yes
An interrupt with interrupt
control level 1?
Yes
No
No
Yes
IRQ1
Yes
IBFI3
Yes
I = 0
Yes
Save PC and CCR
Read vector address
Branch to interrupt handling routine
No
Yes
NMI
No
No
No
IRQ0
Yes
IRQ1
Yes
No
I = 0
Yes
No
UI = 0
Yes
I 1, UI 1
Hold pending
No
IBFI3
Yes
No