format PE Console 4.0
entry start

include 'win32a.inc'

section '.text' code readable executable

start:
    call add_uint
    invoke  ExitProcess, 0

proc add_uint
    mov cl, [n]
    xor si, si
cycle:
    mov al, [b + si]
    adc [a + si], al
    inc si
    loop cycle
    jnc end_p
    adc [carry], 0
end_p:
    ret
endp

section '.data' data readable writeable
    a       db 0, 34, 56, 78
    b       db 0, 43, 65, 230
    n       db 4
    sum     db 0
    carry   db 0

section '.idata' import data readable writeable
    library kernel, 'kernel32.dll'
    import kernel, ExitProcess, 'ExitProcess'