CHAPTER 3 CPU ARCHITECTURE
Preliminary User’s Manual U16846EJ1V0UD
45
Figure 3-10. Data to Be Saved to Stack Memory
(a) PUSH rp instruction (when SP = FEE0H)
Register pair lower
FEE0H
SP
SP
FEE0H
FEDFH
FEDEH
Register pair upper
FEDEH
(b) CALL, CALLF, CALLT instructions (when SP = FEE0H)
PC15-PC8
FEE0H
SP
SP
FEE0H
FEDFH
FEDEH
PC7-PC0
FEDEH
(c) Interrupt, BRK instructions (when SP = FEE0H)
PC15-PC8
PSW
FEDFH
FEE0H
SP
SP
FEE0H
FEDEH
FEDDH
PC7-PC0
FEDDH