go to previous page   go to home page   go to next page hear noise

Answer:

See below.


Is the Element Negative?

Next, set a flag (register $14) if the array entry is negative. Branch to the symbolic address neg if it is.


integer array flow chart
## Registers:
##  $8 -- count                     
##  $9 -- pointer to the array entry
## $10 -- current array entry       
## $11 -- sum of all integers       
## $12 -- sum of negative integers
## $13 -- sum of positive integers
## $14 -- pos. or neg. flag
## $15 -- SIZE of the array

# while  count < SIZE do
loop:    beq      $8,$15,done 
         sll      $0,$0,0        #  branch delay

# get entry, add to sum
         lw       $10,0($9)      #  get entry
         sll      $0,$0,0         #  load delay
         addu     $11,$11,$10    #  add to sum

#  test neg. or pos.

         slti     $14,$10,  #  set flag if entry is neg
         
         bne      $,$,neg  #  branch if negative
         
         sll      $0,$0,0        #  branch delay
         
         
         . . . .                 #  branch for positive goes here

neg:
         addiu    $8,$8,1        #  count++
         addiu    $9,$9,4        #  point at next entry
         j        loop
         sll      $0,$0,0        #  branch delay

done:    sll      $0,$0,0        #  target for branch

        .data
size:   .word  17
array:  .word  12, -1, 8, 0, 6, 85, -74, 23, 99, -30, 30, 95, 4, 7, 10, 28, 14

QUESTION 13:

Fill in the blanks.


go to previous page   go to home page   go to next page