need help to do prelab only

please read the instruction and do prelab only
Pre-lab
• The PORT statement for the 4-bit Adder.
The signal assignment statement for the Adder.• The required packages for the Adder. • The truth table for the 4-to-16 Decoder.• The PORT statement for the Decoder.• The with-select-when statement for the Decoder.• The block diagram for the top-level design.