Write a program that uses the register a to rearrange the fo

Write a program that uses the register a, to rearrange the four word values in the following array as 4. 3. 1. .data array W WORD 1, 2, 3, 4 To display the reversed array, please move the array elements into ax, bx, cx, dx.

Solution

DATA SEGMENT
     ARR DB 4,1,2,3
     LEN DW $-ARR
DATA ENDS
CODE SEGMENT
    ASSUME DS:DATA CS:CODE
START:
      MOV AX,DATA
      MOV DS,AX
            
      MOV CX,LEN-1  
OUTER:
      LEA SI,ARR
      MOV BX,0      
INNER:
      INC BX
      MOV AL,ARR[SI]
      INC SI
      CMP ARR[SI],AL
      JB SKIP
    
      XCHG AL,ARR[SI]
      MOV ARR[SI-1],AL
    
SKIP:
      CMP BX,CX
      JL INNER
               
      LOOP OUTER
           
      MOV AH,4CH
      INT 21H    
CODE ENDS
END START