Data forwarding is a solution to data hazard in which a register $($buffer register$)$ RSLT is

used to store the intermediate result and value of RSLT is forwarded back to ALU directly.

Consider the two instructions and value of R$1,$ R$2,$ R$3$ and RSLT are $30,100,45$ and $198,$

respectively. Draw a timing diagram for $4-$stage pipeline and show the content of RSLT at

each clock cycle.

I$1$ : AddR$1,$ R$2,$ R$3$

I$2$ : Shi f t$-$le f t R$3$