Q) Write an assembly language program to do the following: In a loop, ask the us

Question

Q) Write an assembly language program to do the following:

In a loop, ask the user if they want to test for a palindrome word (y/n)

If the answer is 'y', ask the user to input a string; echo the string back out

    As on the exam, call a function pal to determine

whether or not the string represents a single-word palindrome,

and print the answer. Now repeat the loop.

Test the program with these strings:

rotator

racecar

abboubba

kayak

rear

noon

anna

BOOK NAME: Assembly language and Computer Architecture using C++ and Java by Anthony J. Dos Reis

Program should be written in H1 assembly language.

source file should be with .mas extension. for eg: file.mas, spam.mas

Explanation / Answer

Assembly code DATA SEGMENT MSG1 DB 10,13,'ENTER ANY STRING :- $' MSG2 DB 10,13,'ENTERED STRING IS :- $' MSG3 DB 10,13,'LENGTH OF STRING IS :- $' MSG4 DB 10,13,'NO, GIVEN STRING IS NOT A PALINDROME $' MSG5 DB 10,13,'THE GIVEN STRING IS A PALINDROME $' MSG6 DB 10,13,'REVERSE OF ENTERED STRING IS :- $' P1 LABEL BYTE M1 DB 0FFH L1 DB ? P11 DB 0FFH DUP ('$') P22 DB 0FFH DUP ('$') 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 DISPLAY MSG1 LEA DX,P1 MOV AH,0AH INT 21H DISPLAY MSG2 DISPLAY P11 DISPLAY MSG3 MOV DL,L1 ADD DL,30H MOV AH,2 INT 21H DISPLAY MSG6 LEA SI,P11 LEA DI,P22 MOV DL,L1 DEC DL MOV DH,0 ADD SI,DX MOV CL,L1 MOV CH,0 REVERSE: MOV AL,[SI] MOV [DI],AL INC DI DEC SI LOOP REVERSE DISPLAY P22 LEA SI,P11 LEA DI,P22 MOV CL,L1 MOV CH,0 CHECK: MOV AL,[SI] CMP [DI],AL JNE NOTPALIN INC DI INC SI LOOP CHECK DISPLAY MSG5 JMP EXIT NOTPALIN: DISPLAY MSG4 EXIT: MOV AH,4CH INT 21H CODE ENDS END START

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