Samsung S3C8275X User Manual
Page 56
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X
ADDRESS
SPACES
2-23
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:
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