RS232 on DE2 board sample code

I recommend reading up on the RS232 protocol spec first. I guess these days we all get a bit lazy relying on hardware and software UARTs to do all the tranmission for us, but it isn't hard to develop your own RS232 UART :)

Depending on how you want to send and receive data using your FPGA, you can implement a simple design which uses a memory buffer to store and manipulate incoming data. Outgoing data can be loaded into a buffer and transmitted using the correct digital signal transitions.

I guess first off:

- What are the requirements of your application?

- How are you going to get data into the VHDL-based UART ie. from external device, from soft-core processor etc

- What are your transmission requirements ie. baud-rate, parity etc