Lab02

#Laboratory Exercise 2, Assignment 3 
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#li $s0,0x2110003d #pseudo instruction=2 basic instructions  
#li $s1,0x2 
#but if the immediate value is small, one ins 
#Laboratory Exercise 2, Assignment 4 
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#  Assign X, Y 
#addi  $t1, $zero, 5    # X = $t1 = ? 
#addi  $t2, $zero, -1   # Y = $t2 = ? 
#  Expression Z = 2X + Y 
#add   $s0, $t1, $t1    # $s0 = $t1 + $t1 = X + X = 2X  
#add   $s0, $s0, $t2    # $s0 = $s0 + $t2 = 2X + Y 
#Laboratory Exercise 2, Assignment 5 
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    #  Assign X, Y 
    addi  $t1, $zero, 4    # X = $t1 = ? 
    addi  $t2, $zero, 5    # Y = $t2 = ? 
    #  Expression Z = 3*XY 
    mul   $s0, $t1, $t2    # HI-LO = $t1 * $t2 = X * Y  ; $s0 = LO 
    mul   $s0, $s0, 3      # $s0 = $s0 * 3 = 3 * X * Y 
    #  Z' = Z 
    mflo  $s1