.MODEL SMALL
.STACK 100

.DATA
TABLE   DW ONE
        DW TWO
        DW THREE

.CODE
MOV AX, @DATA
MOV DS, AX

DISP PROC
    PUSHA

    MOV AH, 2
    INT 21H

    POPA
    RET
DISP ENDP

ONE PROC
    PUSH DX

    MOV DL, 'A'
    CALL DISP

    POP DX
    RET
ONE ENDP

TWO PROC
    PUSH DX

    MOV DL, 'B'
    CALL DISP

    POP DX
    RET
TWO ENDP

THREE PROC
    PUSH DX

    MOV DL, 'C'
    CALL DISP

    POP DX
    RET
THREE ENDP

.STARTUP

TOP:
    MOV AH, 1
    INT 21H
    SUB AL, 31H
    JB TOP
    CMP AL, 2
    JA TOP
    MOV AH, 0
    MOV BX, AX
    ADD BX, BX      ; BECAUSE THE ADDRESS IS DW NOT DB

    CALL TABLE[BX]


    MOV AH, 4CH
    INT 21H

END