Determine the number of clock cycles needed to properly execute the given code segment. Datapath includes Forwarding unit. Insert stalls where necessary.

I1: lw $s0, 0($t0)

I2: add $s2, $s0, $s1

I3: lw $s3, 4($t0)

What is the value of ForwardA when instruction I2 is in the EX stage of the pipeline? Datapath includes Forwarding unit. Insert stalls where necessary.

I1: add $s0, $s1, $s2

I2: add $t0, $t1, $t2

I3: add $t3, $t0, $t4

I4: add $t5, $t0, $t7

I5: add $s3, $s4, $s5

a) ForwardA = 00 b) ForwardA = 01 c) ForwardA = 10 d) Cannot be determined.

I4: addi $s4, $s3, -1

I5: add $t1, $t2, $t3

What is the value of ForwardA when instruction I4 is in the EX stage of the pipeline? Datapath includes Forwarding unit. Insert stalls where necessary.

I1: add $s0, $s1, $s2

I2: add $t0, $t1, $t2

I3: add $t3, $t0, $t4

I4: add $t5, $t0, $t7

I5: add $s3, $s4, $s5

a) ForwardB = 00 b) ForwardB = 01 c) ForwardB = 10 d) Cannot be determined.

What is the value of ForwardB when instruction I4 is in the EX stage of the pipeline?

Datapath includes Forwarding unit.

Insert stalls where necessary.

I1: add $s0, $s1, $s2

I2: add $s3, $s4, $s0

I3: add $s5, $s6, $s0

I4: add $s7, $a1, $s0

I5: add $s3, $s4, $s5

a) ForwardB = 00 b) ForwardB = 01 c) ForwardB = 10 d) Cannot be determined.