21
 22         .text
 23 main:
 24
 25         # Read in the integer
 26         li      $v0     5       # service 5 is read integer
 27         syscall                 # make call
 28
 29         # Prepare registers for loop
 30         move    $t3     $v0     # move inputed integer into $t3
 31         li      $t0     0       # set counter for loop
 32         li      $t1     4       # set condition for loop
 33
 34 loop:
 35         beq     $t0     $t1     done    # if $t0 == $t1, goto done
 36         addi    $t0     1               # add 1 to counter
 37         add     $t4     $t3     0x00FF  # mask last byte of $t3 into $t4
 38         or      $t5     $t5     $t4     # or $t4 and $t5 into $t5
 39         sll     $t5     $t5     8       # shift left $t5 by 8 bits
 40         srl     $t0     $t0     8       # shift right $t3 by 8 bits
 41         j       loop                    # jump to loop
 42
 43 done:
 44         li      $v0     1       # service 1 is print integer
 45         move    $a0     $t5     # move $t5 into $a0
 46         syscall                 # make call
 47         jr $ra                  # exit program
 48
 49
 50
 51
~
                                                                                                                    51,0-1        Bot