Exercice 4 :

addi $s1, $t3, 5 = addi $17, $11, 5

001000,01011,10001,1111111111111001

0x21710005

addu $v0, $zero, $a3

= addu 2,0,7

000000,00000,00111,00010,00000,10 0001

0x00071021

or $t0, $t9, $s2 = or 8,25,18

000000,11001,10010,01000,00000,100101

hexa = 0x03324025

sw $4,80($fp)