take two letters show their ascii in BH 1st and BL 2nd

.MODEL SMALL

.STACK 100H

.DATA


.CODE

MAIN PROC

    ;FIRST INITIAL
    MOV AH,1
    INT 21H
    MOV BH,AL

    ;SECOND INITIAL
    MOV AH,1
    INT 21H
    MOV BL,AL

    ;DOS EXIT
    MOV AH,4CH
    INT 21H



MAIN ENDP

END MAIN