; multi-segment executable file template.

data segment
    ; add your data here!
    msg db "Benvenuti nella programmazione Assembler $"
    ; Walter Serlenga!
    othamsg db "Walter Serlenga$"

    ; il $ indica il fine stringa, come il \0 in C


    ; DICHIARAZIONE COSTANTI PER L'OPERAZIONE  Y=a-b+2c
    ;perche scrivi 'a' e non "a"?
    ; perche 'a' e un carattere
    ;"a" e una stringa
    ;quindi dovresti scrivere "a$"
    ;a=9,b=5,c=3

    a EQU '9'
    b EQU '5'
    c EQU '6'

ends

stack segment
    dw   128  dup(0)
ends

code segment
start:
; set segment registers:   Y=a-b+2c
    mov ax, data
    mov ds, ax
    mov es, ax
    mov bx, a
    mov cx, b
    mov dx, c
    sub bx, cx
    add bx, dx


; add your code here

    lea dx, msg     ; load effective address of msg into dx.
    mov ah, 9       ; print function.
    int 21h         ; do it!

    lea dx, othamsg     ; load effective address of msg into dx.
    mov ah, 9       ; print function.
    int 21h         ; do it!


    ; wait for any key....
    mov ah, 1       ; keyboard input
    int 21h         ; do it!

    mov ax, 4c00h ; exit to operating system.
    int 21h
ends

end start ; set entry point and stop the assembler.