Question

Write an assembly subroutine that check if a number is in the interval of [0, 10] and return 1 if the number is in this interval and 0 otherwise. Call this subroutine to check if each integer in an array in the memory is in this interval and write the results of all numbers into another array in the memory

Answer 1

Answer:

.data

array: .word 1,3,5,7,9,11,13,15,17,19

result: .word 0,0,0,0,0,0,0,0,0,0

.text

  la $s0, array

  la $s1, result

  addi $t0, $zero, 0

  INTERVAL:  bge $t0, 10, END

     sll $t1, $t0, 2

     add $t2, $s0, $t1

     lw $t2, 0($t2)

     jal LIMIT

     IF:    bne $a0, 1, ELSE

        add $t3, $s1, $t1

        sw $t2, 0($t3)

     ELSE:

     addi $t0, $t0, 1

     j INTERVAL

  END:    

  addi $v0, $zero, 10

  syscall

  LIMIT:  

     addi $a0, $zero, 0

     START: bge $t2, 0, NEXT

        b ENDLIMIT

     NEXT:  ble $t2, 10, SET

        b ENDLIMIT  

     SET:   addi $a0, $zero, 1

     ENDLIMIT:

     jr $ra

Explanation:

The assembly source code is used to create a subroutine called "INTERVAL" that checks if a number from an array is in a range of 1 to 10. The program returns 1 if the condition is met but 0 if otherwise.