Samsung S3C8245 User Manual
S3C8245/P8245/C8249/P8249
ADDRESS SPACES
2-19
+
PROGRAMMING TIP — Standard Stack Operations Using PUSH and POP
The following example shows you how to perform stack operations in the internal register file using PUSH and POP
instructions:
instructions:
LD
SPL,#0FFH
;
SPL
←
FFH
;
(Normally, the SPL is set to 0FFH by the initialization
;
routine)
•
•
•
PUSH
PP
;
Stack address 0FEH
←
PP
PUSH
RP0
;
Stack address 0FDH
←
RP0
PUSH
RP1
;
Stack address 0FCH
←
RP1
PUSH
R3
;
Stack address 0FBH
←
R3
•
•
•
POP
R3
;
R3
←
Stack address 0FBH
POP
RP1
;
RP1
←
Stack address 0FCH
POP
RP0
;
RP0
←
Stack address 0FDH
POP
PP
;
PP
←
Stack address 0FEH