FPGA - Rotary Encoder

Reap what you sow. Here's some public domain code for a Spartan 3E, to interface with multiple rotary encoders. It's currently tested up to 8. It uses Block RAM to keep track of a Rotary ID and Value for the rotary (between 0-127). It outputs the rotary values via UART on 57600 baud. Based off of the Papilio and also HamsterNZ's introductory PDF on FPGAs.

I have different versions of this. I've had some issues with UART timing on a Spartan 3E 500, whereas the Papilio's 250 did not have such issues. I'll start with the one that's compatible with the Papilio board (including the pinout / constraints.ucf file).