Draw a block diagram and an ASMD chart for a circuit with two eight-bit registers RA and...

Draw a block diagram and an ASMD chart for a circuit with two eight-bit registers RA and RB that receive two unsigned binary numbers. The circuit performs the subtraction operation

Use the method for subtraction described in Section 1.5, and set a borrow flip-flop to 1 if the answer is negative. Write and verify an HDL model of the circuit.