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6F3B0250
Basic Hardware and Function
183
7. Instructions
FUN 069 SHL1 1 bit shift left
Expression
Input
-
[ SHL1
A
]
-
Output
Function
When the input is ON, the data of register
A
is shifted 1 bit to the left (MSB direction). 0 is stored in the
right most bit (LSB). The pushed out bit state is stored in the carry flag (CF = S050). 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
Operation data
ÖÖÖÖÖÖÖÖÖ Ö
Example
When X008 is changed from OFF to ON, the data of RW15 is shifted 1 bit to the left.
The figure below shows an operation example.
(MSB) (LSB)
FEDCBA9876543210
1110011100111010
CF
1 1100111001110100
R002 is turned ON 0
RW15
RW15 (Result)
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