Mitsubishi M16C/60 Series Software Manual page 64

D EX
DE
(X) ← (X) – 1
Op e r a t io n :
F u n c t io n : This instruction subtracts one from the current contents of X.
St a t u s fla g : N :
V :
T :
B :
I :
D :
Z :
C :
Addressing mode
∆DEX
Implied
58
CREMENT INDEX REGISTER
N is 1 when bit 7 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
Statement
X
BY ONE
Machine codes Byte number
CA
16
D EX
Cycle number
1 2