Interrupt Control Mode 1 - Hitachi H8S/2199 Hardware Manual

I C
Figure 6.5 Flowchart of Procedure Up to Interrupt Acceptance in
Rev. 1.0, 02/00, page 114 of 1141
Program execution state
Yes
Yes
Control level 1
interrupt?
Yes
No
Yes
No
H S W 1
Yes
H S W 2
Save PC and CCR
Read vector address
Branch to interrupt handling routine
Interrupt Control Mode 0
No
Interrupt
generated?
Yes
NMI
No
Address trap
interrupt?
No
No
No
I C
Yes
H S W 1
Yes
No
I = 0
Yes
I ← 1
Hold pending
No
Yes
H S W 2
Yes