.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 ---------------------------------;
;**************************************************************************;
;**************************************************************************;