MASTER OF COMPUTER APPLICATIONS
Course Code : MCSL-012
Course Title : Computer Organisation and Assembly Language Programming
Assignment Number : MCA(1)/012/Assign/2013 and BCA(II)/012/Assign/2013
Write a program in 8086 assembly Language (with proper comments) to find if the two given strings of length 5 are reverse of each other. You may assume that both the strings are available in the memory. Make suitable assumptions, if any
DATA SEGMENT
STR1 DB “NITIN”
STR2 DB “GITIN”
MSG1 DB 10,13,’STRING IS NOT A PALINDROME $’
MSG2 DB 10,13,’STRING IS A PALINDROME $’
DATA ENDS
DISPLAY MACRO MSG
MOV AH,9
LEA DX,MSG
INT 21H
ENDM
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOV DS,AX
LEA SI,STR1
LEA DI,STR2
ADD DI,4
MOV CX,5
CHECK:
MOV AL,[SI]
CMP [DI],AL
JNE NOTPALIN
DEC DI
INC SI
LOOP CHECK
DISPLAY MSG2
JMP EXIT
NOTPALIN:
DISPLAY MSG1
EXIT: MOV AH,4CH
INT 21H
CODE ENDS
END START
program code :
[codesyntax lang=”asm” lines=”normal”]
DATA SEGMENT
STR1 DB “NITIN”
STR2 DB “GITIN”
MSG1 DB 10,13,’STRING IS NOT A PALINDROME $’
MSG2 DB 10,13,’STRING IS A PALINDROME $’
DATA ENDS
DISPLAY MACRO MSG
MOV AH,9
LEA DX,MSG
INT 21H
ENDM
CODE SEGMENT
ASSUME CS:CODE,DS:DATA
START:
MOV AX,DATA
MOV DS,AX
LEA SI,STR1
LEA DI,STR2
ADD DI,4
MOV CX,5
CHECK:
MOV AL,[SI]
CMP [DI],AL
JNE NOTPALIN
DEC DI
INC SI
LOOP CHECK
DISPLAY MSG2
JMP EXIT
NOTPALIN:
DISPLAY MSG1
EXIT: MOV AH,4CH
INT 21H
CODE ENDS
END START
[/codesyntax]
Screen shots :-
Output when Both Strings are Same :-
Output when Both Strings are Not Same :-
