Problem 4 (25 points) Figure 4.17 (p. 265) in the textbook shows the implementation of several types of instructions in the MIPS instruction set architecture we have used in MIPS assembly programming. One type of instructions missing is that of the jump register instruction, whose description is given below and can be also found on page A-64: jr rs 0 rs O 8 15 Unconditionally jump to the instruction whose address is in register rs (a) (15 points) Extend the datapath and control of Figure 4.17 to include the jump register instruction. Explain and justify why the changes/additions are necessary. You can base your work on the diagram given in Figure 4.17, a copy of which is given on the other page. (b) (10 points) Modify the control function given Figure 4.22 (p. 269) so that the jump register instruction will work properly along with the other four types of instructions that are supported already. Give a brief explanation Problem 4 (25 points) Figure 4.17 (p. 265) in the textbook shows the implementation of several types of instructions in the MIPS instruction set architecture we have used in MIPS assembly programming. One type of instructions missing is that of the jump register instruction, whose description is given below and can be also found on page A-64: jr rs 0 rs O 8 15 Unconditionally jump to the instruction whose address is in register rs (a) (15 points) Extend the datapath and control of Figure 4.17 to include the jump register instruction. Explain and justify why the changes/additions are necessary. You can base your work on the diagram given in Figure 4.17, a copy of which is given on the other page. (b) (10 points) Modify the control function given Figure 4.22 (p. 269) so that the jump register instruction will work properly along with the other four types of instructions that are supported already. Give a brief explanation