### A good answer might be:

No.

# Delay Slot Bug

The program can be made slightly shorter by removing the no-op instruction filling the first delay slot. The instruction following it (the `sltiu`) will always execute, sometimes uselessly, but never will do damage.

    # Set range indicator to 1
            ori     $3,$0,1         #  set to 1

    # Test  30 <= temp <= 55
            sltiu   $8,$2,56        #  $8=1 if temp <= 55
            beq     $8,$0,out       #  0? out of range
            sll     $0,$0,0         #  delay

            sltiu   $8,$2,30        #  $8=1 if  temp < 30
            beq     $8,$0,cont      #  0? in range
            sll     $0,$0,0         #  delay

    # Out of Range: set range indicator to 0
    out:
            ori     $3,$0,0         #  clear to 0

    cont:   sll     $0,$0,0         #  target for the jump
    ## End of file

The second no-op, however, is essential. If it is missing, the next instruction, the `ori` sets the flag to zero regardless of the branch instruction. This is a common bug, and can be very frustrating because sometimes the result is correct.

### QUESTION 9:

(Review:) What other type of instruction is followed by a delay slot?