A module designed for fun.
  FPGA proven YES
  ASIC proven NO


This just a piece of code I came across. It was originally written in 2004 as bring-up test for a big FPGA board which had 15 LED's. Just blinking them on and off whas not my style so I wrote a module which ran the 'Nightrider' pattern. But not just LEDs back and forth but the complete behaviour with the fading effect. As often is the case this started leading it's own life. If a user doubted the board, the connections or programming setup, the phrase "have you tried Nightrider" could be heard.
The code can be found here. There is no document or test bench for this. Especially getting the right amount of fading has to be tuned on real hardware.