Answer the following questions:

a. (3 marks) In the single clock cycle datapath discussed in class, there are two adders, separate from the ALU. What is each adder used for, and why cant these functions be performed using the ALU?

b. (2 marks) Give two instruction types for which the write control signal for the register file in the single clock cycle datapath discussed in class would need to be 0, so that writes to registers are disabled.