code : .data

n: .word 13

.text

main: add $t0, $0, $zero

addi $t1, $zero, 1

la $t3, n

lw $t3, 0($t3)

fib: beq $t3, $0, finish

add $t2,$t1,$t0

move $t0, $t1

move $t1, $t2

subi $t3, $t3, 1

j fib

finish: addi $a0, $t0, 0

li $v0, 1 # you will be asked about what the purpose of this line for syscall

syscall

li $v0, 10

syscall

Load fib s into MARS and assemble the code. Note that Fibonacci number calculation is as follows: fib[1] 1 Q1. What do the data, word, .text directives mean (i.e., what do you put in each section)? Q2. How do you set a breakpoint in MARS? Set breakpoint on line 15, give the command in your answer. Q3. After your program stops because of a breakpoint, how do you continue to execute your code? How do you step through your code? Q4. How can you find out the contents of a register? How do you modify the value of a register? Q5. At what address is n stored in memory? Calculate the 13th fib number by modifying this memory location Q6. ine 18 and 20 use syscall instruction. What is it and how do you use it