Level 2 - Design of an 8bit+8bit BCD Adder You task is to design an BCD adder, that adds two two-digit BCD numbers. The structure of a 4bit BCD adder is

as follows: carry out Sum > 9? carry out binary adder binary adder Sum carry in t • Design your BCD adder in VHDL; this must be structural for the top-level • Simulate your design and show correct behaviour; the input and output vectors must be shown in decimal Your submission must include the following: • ALL VHDL sources • All simulation screenshots