P4

.MODEL SMALL
.STACK 100H
.DATA

.CODE
MAIN PROC

    MOV AX,@DATA
    MOV DS,AX

    MOV AH,1
    INT 21H

    CMP AL,"1"
    JE L1
    CMP AL,"3"
    JE L1                    ;P5

    CMP AL,"2"
    JE L2
    CMP AL,"4"
    JE L2
    JMP EXIT

    L1:
    MOV DL,"O"
    MOV AH,2
    INT 21H
    JMP EXIT

    L2:
    MOV DL,"E"
    MOV AH,2
    INT 21H
    JMP EXIT

    EXIT:
    MOV AH,4CH
    INT 21H

    MAIN ENDP
END MAIN