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