_EXIT = 1
_PRINTF = 127

.SECT.TEXT
start:
    PUSH vec
    CALL sum
    PUSH AX
    PUSH output
    PUSH _PRINTF
    SYS
    PUSH 0
    PUSH _EXIT
    SYS

sum:
    PUSH BP
    MOV BP,SP
    MOV BX,4(BP)
    MOV CX,end-vec
    SHR CX,1
    MOV SI,0
    MOV AX,0
1:  ADD AX,(BX)(SI)
    ADD SI,2
    LOOP 1b
    MOV SP,BP
    POP BP
    RET

.SECT.DATA
    vec: .WORD 1,2,41,76
    vec2: .WORD 1,2,41,76
    vec3: .WORD 3,4,6,8
    end: .SPACE 1
    output: .ASCII "Somma: %d\n"
.SECT.BSS