Renesas R8C/Tiny Series Software Manual page 83

Chapter 3 Functions
DEC
[ Syntax ]
DEC.size dest
[ Operation ]
dest dest –
[ Function ]
• This instruction decrements 1 from
[ Selectable dest ]
[ Flag Change ]
Flag U I O B
Change
Conditions
S : The flag is set when the operation resulted in MSB = 1; otherwise cleared.
Z : The flag is set when the operation resulted in 0; otherwise cleared.
[ Description Example ]
DEC.W A0
DEC.B R0L
[ Related Instructions ]
DECrement
B , W
1
dest
and stores the result in
S Z D C
INC
Decrement
[ Instruction Code/Number of Cycles ]
dest
R0L *1 R0H
*1 *2
abs16 A0
*1 You can only specify (.B) for the size specifier (.size).
*2 You can only specify (.W) for the size specifier (.size).
66
3.2 Functions
.
dest
*1 dsp:8[SB] *1 dsp:8[FB]
*2
A1
DEC
Page=169
*1