Difference between revisions of "Assembly Language Logical Shift"

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(Created page with "This example uses a Logical Shift to perform multiplication. INP R0,2 INP R1,2 MOV R2, R1 MOV R3, R0 LOOP: LSL R3,R3,#1 LSR R2,R2,#1...")
 
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       MOV R3, R0
 
       MOV R3, R0
 
  LOOP: LSL R3,R3,#1
 
  LOOP: LSL R3,R3,#1
       LSR R2,R2,#1
+
       SUB R2,R2,#2
 
       CMP R2,#1
 
       CMP R2,#1
 
       BGT LOOP
 
       BGT LOOP

Revision as of 09:29, 14 January 2019

This example uses a Logical Shift to perform multiplication.

      INP R0,2
      INP R1,2
      MOV R2, R1
      MOV R3, R0
LOOP: LSL R3,R3,#1
      SUB R2,R2,#2
      CMP R2,#1
      BGT LOOP
      BLT END
      ADD R3,R3,R0
END:  OUT R3,4
      HALT