Jack Gassett put together a series of videos, at The Gadget Factory demonstrating how to debug the internal logic of an fpga using the open workbench logic sniffer.
“When I was debugging the UART communications last week I discovered a new way to debug internal FPGA logic. I put together a screencast for those who are interested in using their OLS to debug internal FPGA logic.”
Get your own open workbench logic sniffer at Seeed Studio for $50.
Via the forum , Thank you jack