6. Given the following datapath for the single-cycle implementation of a computer and the
definition of its instructions:

Assume that the instructions are fixed length and the operation time for the major functional units in

this implementation are as follows:

●Memory units: 2ns

●ALU and adders: 2ns

●Register file (read or write): 1ns

●Multiplexers, control unit, PC accesses, sign extension unit, and wires: no delay

Please compute the required time for each instruction and explain why.