75
PH A
PH A
P
US
H A
CCUMULATOR ON STACK
Op e r a t io n :
F u n c t io n :
St a t u s fla g :
(M(S))
←
(A)
(S)
←
(S) – 1
This instruction pushes the contents of A to the memory
location designated by S, and decrements the contents of S by
one.
No change
Machine codes
48
16
Statement
∆
PHA
Cycle number
3
Byte number
1
Addressing mode
Implied