A Microchip SAMD11 debug controller lets consumer configuration of your FPGA and gives a variety of diagnostic interfaces: A complete, consumer-programmable JTAG controller capable of configuring the FPGA and communicating by means of JTAG with user patterns I quickly commenced referring on the principle as "usbstar" in my non-public notes https://jaidenfbxtp.wikigdia.com/6877134/cynthion_an_overview