One Digit Shift Left

This Instruction 
shifts data between St and E (inclusive) by one digit (four bits) to the left. "0" is written into the rightmost digit of the St and the contents of the leftmost digit of E is lost.

                              

              
Example for use SLD

This sample will shift data in memory DM10
-DM11 by shift from left
side bite 0.00 on one time is shift one bite





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