3.4. Writing the VHDL/Verilog Code for FPGA Implementation

Try these first

1. 1.

   What keyword is used to define an entity in VHDL?

   Hint

   Think about what we discussed regarding the structure of a VHDL program.

2. 2.

   What is the purpose of port declarations in HDL?

   Hint

   Remember the importance of clarifying data flow.

3. 3.

   What is a primary function of the PROCESS in VHDL?

   • To define inputs
   • To implement logic
   • To declare the module

   Hint

   Think about the role of the PROCESS in the code structure.

4. 4.

   True or False: Verilog uses module to define the structure of a design.

   • True
   • False

   Hint

   Recall our discussion on Verilog syntax.

5. 5.

   Design a 3-input multiplexer in both VHDL and Verilog. Explain the selection logic and implementation in detail.

   Hint

   Think about how your selection lines determine which input to pass through.

6. 6.

   Compare the performance trade-offs when using VHDL versus Verilog for large-scale implementation. Provide examples to illustrate your points.

   Hint

   Consider how project size and team experience affect your choice of HDL.