$7.$ In this exercise we examine in detail how an instruction is executed in a single$-$

cycle datapath. Problems in this exercise refer to a clock cycle in which the

processor fetches the following instruction word:

$10101100100001010000000000010100$

Assume that the data memory is all zeros and that the processor$$s registers have

the following values at the beginning of the cycle in which the above instruction

word is fetched:

R$0$: $0,$ R$1$: $2,$ R$2$: $4,$ R$3$: $6,$ R$4$: $8,$ R$5$: $10,$ R$6$: $12,$ R$8$: $16,$ R$12$: $24$ R$31$: $31$

a$.$ What are the outputs of the sign$-$extend and the jump $$Shift$-$Left$-2($near the top of Figure $4\mathrm{.}24)$ for this instruction word? $(2$ points$)$

b$.$ What are the values of ALU control unit$$s inputs $($ALUOp and Instruction

operation$)$ for this instruction? $(2$ points$)$

c$.$ What is the new PC address after this instruction is executed? Highlight the path through which this value is determined. $(2$ points$)$

d$.$ For the ALU and the two add units, what are their data input values? $(2$ points$)$

e$.$ What are the values of all inputs for the $$Registers$$ unit? $(2$ points$)$