Rev. 3.0, 09/98, page 71 of 361
Program execution
No
No
No
Yes
No
Yes
Yes
Yes
No
Yes
NMI?
I = 0?
IRQ 0?
IRQ 1?
ADI?
Reset
I 1
Interrupt
requested?
Pending
Latch vector No.
Save PC
Save CCR
Read vector address
Branch to software
interrupt-handling
routine
Yes
Figure 4.4 Hardware Interrupt-Handling Sequence
