.model small

.stack 100

.data

dong1: db 10,13,"Nhap so thu nhat:  $"

dong2: db 10,13," Nhap so thu 2: $"

dong3: db 10,13,"Ket qua:     $"

.code

main proc

    mov ax,@data

    mov ds,ax

 batdau:

    lea dx,dong1

    mov ah,9

    int 21h

    call nhapso

    mov bl,al

    lea dx,dong2

    mov ah,9

    int 21h

    call nhapso

    mov bh,al

    lea dx,dong3

    mov ah,9

    int 21h

    add bl,bh

    mov al,bl

    mov bl,10

    mov ah,0

    div bl

    mov bl,ah

    add al,30h

    add bl,30h

    mov dl,al

    call hienthi

    mov dl,bl

    call hienthi

    jmp batdau

 nhapso:

    mov ah,0

    int 16h

    cmp al,"0"

    jl nhapso

    cmp al,"9"

    jg nhapso

    mov dl,al

    call hienthi

    sub al,30h

    ret

 hienthi:

    mov ah,2

    int 21h

    ret        

ends

end main