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:

1000 1100 1010 0110 0000 0000 0011 0000

Assume that the data memory is all zeros and that the processors registers have the following values at the beginning of the cycle in which the above instruction word is fetched:

R0	R1	R2	R3	R4	R5	R6	R8	R12	R31
0	-1	-2	4	-6	8	-10	-12	-14	31

A) What are the outputs of the sign-extend and the jump Shift-Left-2 (near the top of Figure 4.24) for this instruction word?

B) What are the values of ALU control units inputs (ALUOp and Instruction operation) for this instruction?

C) For the ALU and the two add units, what are their data input values?

ALU		Add (PC+4)		Add (Branch)
Input#1	Input#2	Input#1	Input#2	Input#1	Input#2

D) What are the values of all inputs for the Registers unit?

Read Reg#1	Read Reg#2	Write Register	Write Data	RegWrite