Download the .zip file below. Extract it see the folders. Inside you will have 4 folders ¡called misc, sim, src and tb. In the misc folder we have the quartus project and the synthesis. In the sim folder we have the ModelSim project for simulations. In the src folder we have all the source codes: the UART_rx, UART_tx, baudrate_generator and the top file. In the tb folder, we usually save the test bench files, but we don't have one now. "