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6F3B0250
Basic Hardware and Function
193
7. Instructions
FUN 081 RTL n bit rotate left
Expression
Input
-
[
A
RTL
n
®
B
]
-
Output
Function
When the input is ON, the data of register
A
is rotated
n
bits to the left (MSB direction), and stored in
B
. After the operation, if the left most bit (MSB) is ON, the output is turned ON.
Execution condition
Input Operation Output CF
OFF No execution OFF
-
ON Execution When MSB = 1 ON Set or reset
When MSB = 0 OFF Set or reset
Operand
Name Device Re
g
ister Constant Index
X Y R S T. C. XW YW RW SW T C D I J K
A
Source
ÖÖÖÖÖÖÖÖÖÖ Ö Ö
n
Shift bits 1 - 16
B
Destination
ÖÖÖÖÖÖÖÖÖ Ö
Example
When X008 is changed from OFF to ON, the data of RW18 is rotated 3 bits to the left and the
result is stored in RW20.
The figure below shows an operation example.
(MSB) (LSB)
FEDCBA9876543210
1010011100111010
CF
1 0011100111010101
R002 is turned OFF
RW18
RW20 (Result)
*
*
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