Draw the timing diagrams for the following cases.

1. add $2, $1, $3

add $3, $2, $3

add $4, $3, $2

sw $1, 50($4)

i) The pipeline has no forwarding capability. Note that registers are updated during the first half of the clock cycle, and their contents become available in the second half of the cycle.

ii) The pipeline has the forwarding capability. Indicate where you use the forwarding.