Y&y

.MODEL SMALL
.STACK 100H
.CODE

MAIN PROC

    F:
    MOV AH,1
    INT 21H
    MOV BH,AL

    MOV AH,2
    MOV DL,0AH
    INT 21H
    MOV DL,0DH
    INT 21H

    CMP BH,'Y'
    JE IF
    JNE ELSE

    IF:
    MOV AH,2
    MOV DL,BH
    INT 21H

    MOV AH,2
    MOV DL,0AH
    INT 21H
    MOV DL,0DH
    INT 21H

    JMP F

    ELSE:
    CMP BH,'y'
    JE IF
    JNE EXIT

    EXIT:
    MOV AH,4CH
    INT 21H
    MAIN ENDP
END MAIN