draw the datapath for jr and sll$.$

Your task is to enhance the given architecture to support the operation of specific MIPS instructions by integrating additional wires, multiplexers, or control signals. When adding wires from the instruction memory, please specify the bit numbers where applicable. When adding multiplexers, make sure to include selection signals as well as the inputs. Alongside the enhancements, you will also be required to provide explanations for the modifications and briefly answer a few questions regarding the given instructions.