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Program that declares and initialize a 2D array in row major order, and print the contents of the 3rd row and 4th column using Register Indirect mode

Posted By: Easy Tutor     Category: Assembly Language     Views: 4332

An AL Program that declares and initialize a 2D array of size 4x5 in row major order, and print the contents of the 3rd row and 4th column using Register Indirect Mode.

Code for Program that declares and initialize a 2D array in row major order, and print the contents of the 3rd row and 4th column using Register Indirect mode in Assembly Language

 .MODEL SMALL
 .STACK 100H

 .DATA
    PROMPT_1  DB  'The contents of the 2D array are : ',0DH,0AH,'$'
    PROMPT_2  DB  0DH,0AH,'The contents of the 3rd row are : $'
    PROMPT_3  DB  0DH,0AH,'The contents of the 4th column are : $'

    ARRAY   DW  1,2,3,4,5   
            DW  6,7,8,9,10 
            DW  11,12,13,14,15
            DW  16,17,18,19,20
 
 .CODE
   MAIN PROC
     MOV AX, @DATA                ; initialize DS
     MOV DS, AX

     LEA DX, PROMPT_1             ; load and display the string PROMPT_1
     MOV AH, 9
     INT 21H

     LEA SI, ARRAY                ; set SI=offset address of ARRAY
     MOV CX, 4                    ; set CX=4

     @LOOP_1:                     ; loop label
       MOV BX, 5                  ; set BX=5

       @LOOP_2:                   ; loop label
         MOV AH, 2                ; set output function
         MOV DL, 20H              ; set DL=20H
         INT 21H                  ; print a character

         MOV AX, [SI]             ; set AX=[SI]

         CALL OUTDEC              ; call the procedure OUTDEC

         ADD SI, 2                ; set SI=SI+2
         DEC BX                   ; set BX=BX-1
       JNZ @LOOP_2                ; jump to label @LOOP_2 if BX=0

       MOV AH, 2                  ; set output function
       MOV DL, 0DH                ; set DL=0DH
       INT 21H                    ; print a character

       MOV DL, 0AH                ; set DL=0AH
       INT 21H                    ; print a character
     LOOP @LOOP_1                 ; jump to label @LOOP_1 while CX!=0

     LEA DX, PROMPT_2             ; load and display the string PROMPT_2
     MOV AH, 9
     INT 21H

     LEA SI, ARRAY                ; set SI=offset address of ARRAY
     ADD SI, 20                   ; set SI=SI+20 : 3rd row=SI+2(5)(2)
     MOV CX, 5                    ; set CX=5

     @LOOP_3:                     ; loop label
       MOV AH, 2                  ; set output function
       MOV DL, 20H                ; set DL=20H
       INT 21H                    ; print a character

       MOV AX, [SI]               ; set AX=[SI]

       CALL OUTDEC                ; call the procedure OUTDEC

       ADD SI, 2                  ; set SI=SI+2
     LOOP @LOOP_3                 ; jump to label @LOOP_3 while CX!=0
  
     LEA DX, PROMPT_3             ; load and display the string PROMPT_3
     MOV AH, 9
     INT 21H

     LEA SI, ARRAY                ; set SI=offset address of ARRAY
     ADD SI, 6                    ; set SI=SI+6 : 4th column=SI+(4-1)(2)
     MOV CX, 4                    ; set CX=4

     @LOOP_4:                     ; loop label
       MOV AH, 2                  ; set output function
       MOV DL, 20H                ; set DL=20H
       INT 21H                    ; print a character

       MOV AX, [SI]               ; set AX=[SI]

       CALL OUTDEC                ; call the procedure OUTDEC

       ADD SI, 10                 ; set SI=SI+10     
     LOOP @LOOP_4                 ; jump to label @LOOP_4 while CX!=0

     MOV AH, 4CH                  ; return control to DOS
     INT 21H
   MAIN ENDP

 ;**************************************************************************;
 ;**************************************************************************;
 ;-------------------------  Procedure Definitions  ------------------------;
 ;**************************************************************************;
 ;**************************************************************************;

 ;**************************************************************************;
 ;--------------------------------  OUTDEC  --------------------------------;
 ;**************************************************************************;

 OUTDEC PROC
   ; this procedure will display a decimal number
   ; input : AX
   ; output : none

   PUSH BX                        ; push BX onto the STACK
   PUSH CX                        ; push CX onto the STACK
   PUSH DX                        ; push DX onto the STACK

   XOR CX, CX                     ; clear CX
   MOV BX, 10                     ; set BX=10

   @OUTPUT:                       ; loop label
     XOR DX, DX                   ; clear DX
     DIV BX                       ; divide AX by BX
     PUSH DX                      ; push DX onto the STACK
     INC CX                       ; increment CX
     OR AX, AX                    ; take OR of Ax with AX
   JNE @OUTPUT                    ; jump to label @OUTPUT if ZF=0

   MOV AH, 2                      ; set output function

   @DISPLAY:                      ; loop label
     POP DX                       ; pop a value from STACK to DX
     OR DL, 30H                   ; convert decimal to ascii code
     INT 21H                      ; print a character
   LOOP @DISPLAY                  ; jump to label @DISPLAY if CX!=0

   POP DX                         ; pop a value from STACK into DX
   POP CX                         ; pop a value from STACK into CX
   POP BX                         ; pop a value from STACK into BX

   RET                            ; return control to the calling procedure
 OUTDEC ENDP

 ;**************************************************************************;
 ;--------------------------------------------------------------------------;
 ;**************************************************************************;

 END MAIN

 ;**************************************************************************;
 ;**************************************************************************;
 ;------------------------------  THE END  ---------------------------------;
 ;**************************************************************************;
 ;**************************************************************************;

  
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Easy Tutor
Easy Tutor author of Program that declares and initialize a 2D array in row major order, and print the contents of the 3rd row and 4th column using Register Indirect mode is from United States. Easy Tutor says

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