54
C OM
C OM
COM
PLEMENT
(M)
←
(M)
This instruction takes the one’s complement of the contents of
M and stores the result in M.
N is 1 when bit 7 of the M is 1 after the operation;
otherwise N is 0.
No change
No change
No change
No change
No change
Z is 1 when the operation result is 0; otherwise Z is 0.
No change
Op e r a t io n :
F u n c t io n :
St a t u s fla g :
Addressing mode
Zero page
Statement
∆
COM
∆
$zz
Machine codes
44
16
, zz
16
Cycle number
5
Byte number
2
N :
V :
T :
B :
I :
D :
Z :
C :
