Program Snickerdoodle Via JTAG
One of the problems with copying the system.bit file to the SD card for a firmware change is that one has to take the SD card out of the Snickerdoodle and load it into a PC. This is fine once or twice but it can get very frustrating when you are making many firmware updates.. especially late at night. A better way is to purchase a Breaky Breaky and a JTAG programming cable from Digilent like the one shown below and program the FPGA via JTAG. JTAG not only allows for programming without taking the SD card out of the Snickerdoodle but one can also perform real-time debugging of the FPGA with logic viewers and advanced triggering.
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