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3.2 Functions
Chapter 3 Functions
ROtate to Left with Carry
Rotate left with carry
C
[ Description Example ]
[ Related Instructions ] RORC,ROT,SHA,SHL
[ Function ]
[ Selectable dest ]
dest
R0L/R0 R0H/R1 R1L/R2 R1H/R3
A0/A0 A1/A1 [A0] [A1]
dsp:8[A0] dsp:8[A1] dsp:8[SB] dsp:8[FB]
dsp:16[A0] dsp:16[A1] dsp:16[SB] abs16
dsp:20[A0] dsp:20[A1] abs20
R2R0 R3R1 A1A0
ROLC ROLC
[ Flag Change ]
ROLC.B R0L
ROLC.W R0
B , W
[ Syntax ]
ROLC.size dest
[ Operation ]
• This instruction rotates
dest
one bit to the left including the C flag.
UIOBSZDC
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
dest
= 0; otherwise cleared.
C : The flag is set when the shifted-out bit is 1; otherwise cleared.
[ Instruction Code/Number of Cycles ]
Page=
220
MSB dest LSB
Flag
Change
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