6.13.5 ROR - W & ROL - W
Input/output Operand
Data type
IN
VW, T, C, IW, QW, MW, SW, SMW, LW, AC, AIW,constant, *VD, *LD, *AC
word
N
VB, IB, QB, MB, SB, SMB, LB, AC,constant, *VD, *LD, *AC
byte
OUT
VW, T, C, IW, QW, MW, SW, SMW, LW, AC, *VD, *LD, *AC
word
ROR - W & ROL - W :Instruction rotates the input word to
the right or to the left n bits and puts the result in the
output word (OUT).Rotation is cyclic.
If N is greater than or equal to 16,the remainder of N/16
is the number of rotation bits.If remainder is equal to 0 ，
Rotation operation is not performed and the value of
SM1.0 is 1.If the rotation operation is performed, the
final rotation bit is copied to overflow bit (SM1.1).
ROR - W& ROL - W operations are not signed.
error conditions:
0006
Indirect address
Special memory bit:
SM1.0
When the value of the loop is zero, SM1.0 is set to 1.
SM1.1
Overflow bit
Example:
When the value of M0.0 is 1,VW0 moves a bit towards the left and VW10 moves two
bits towards the right circularly.
180
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