46
CHAPTER 5 CPU SOFTWARE ARCHITECTURE
PC PC
SP
(-
2
)
SP
DC
H
DC
H
FE
H
FE
H
79
H
56
H
5678
H
Before execution
After execution
[Example]
CALLV #3
1234
H
1232
H
FEDC
H
1233
H
1232
H
1233
H
1232
H
FFC7
H
FFC6
H
1234
H
1234
H
XX
H
XX
H
...
...
...
...