The goal is to design and implement a high-speed logical shifter. The specification you have been given requires the design of a circuit that will shift a 16-bit word to the right or to the left by 1-,2-,3-, or 4-bit positions in a single clock time.
The input to your system is a 3-bit word that is to be interpreted as follows:
B2- 0 shift right
1 shift left
B1 B0 Meaning
0 0 Shift by 1
0 1 Shift by 2
1 0 Shift by 3
1 1 Shift by 4
(a) Draw a top-level block diagram for your system.
(b) Assume you decide to build the shifter using 16 D flip-flops. Write the logic equations for the D inputs.
(c) Explain how your design works.
(d) Confirm your design by writing and testing a structural Verilog model.