# TestIstruzioni.s
        .text
        .globl main

main:
        li $t1,1

        li $t0,0x7fffffff #= max positivo
        addu $t2,$t0,$t1
#       add $t2,$t0,$t1 #overflow
        neg $t2,$t0

        li $t0,0xffffffff #= -1
        add $t2,$t0,$t1 #= 0
        addu $t2,$t0,$t1 #= 0

        li $t0,0x80000000 #= max negativo
#       sub $t2,$t0,$t1 #overflow
        subu $t2,$t0,$t1
        negu $t2,$t0
#       neg $t2,$t0 #overflow

        la $a0,array
        li $t0,4
        lw $t2,4($a0)
        sw $t2,result
        jr $ra

        .data
array:  .word 1,2,3,4,5
result: .word 0