Assembly-Language/Lab#09__Task#1.asm at main · Farhanulhaq19/Assembly-Language · GitHub

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.model small
.stack 100h
.data
    original db 'My name is Farhan!', 0
    reversed db 50 dup('$')
    len equ $-original-1
.code
main proc
    mov ax, @data
    mov ds, ax
    mov es, ax

    lea si, original
    lea di, reversed
    mov cx, len

    call reverse_string

    lea dx, original
    mov ah, 9
    int 21h

    call newline

    lea dx, reversed
    mov ah, 9
    int 21h

    mov ah, 4Ch
    int 21h
main endp

reverse_string proc
    push cx
    push si
    push di

    mov si, 0
    mov di, len-1

reverse_loop:
    mov al, [original + si]
    mov [reversed + di], al
    inc si
    dec di
    loop reverse_loop

    pop di
    pop si
    pop cx
    ret
reverse_string endp

newline proc
    mov ah, 2
    mov dl, 10
    int 21h
    mov dl, 13
    int 21h
    ret
newline endp

end main