Hi JColvin, We used zybo for our board prototype integrated with OV7670 Camera. every time I run it. I have a warning like this: INFO: [Labtools 27-1434] Device xc7z010 (JTAG device index = 1) is programmed with a design that has no supported debug core(s) in it. WARNING: [Labtools 27-3123] The debug hub core was not detected at User Scan Chain 1 or 3. Resolution: 1. Make sure the clock connected to the debug hub (dbg_hub) core is a free running clock and is active OR 2. Manually launch hw_server with -e "set xsdb-user-bscan <C_USER_SCAN_CHAIN scan_chain_number>" to detect the debug hub at User Scan Chain of 2 or 4. To determine the user scan chain setting, open the implemented design and use: get_property C_USER_SCAN_CHAIN [get_debug_cores dbg_hub]. Hopefully you help me to fix it! Thanks and have a nice day!