For that test, would I need to use an RS232 keyboard? I didn't run it since I'm pretty sure the port works since I'm also using it to program my PICs. The baudrate and handshake is set on the PC as well.

I'll probably have to try it with another computer to see if the one I'm using is not compatible and needs the MAX IC. That's going to be a problem since the board had been fabricated and adding the MAX would require me to do a bit of a workaround (which is why I'm trying to get it going without the MAX). Initially, I was planning on using a PS/2 connection to transmit the data to the computer, but I was unable to find enough information on it to the point that I could understand how it works, so I decided to switch to RS232.