So if you’re having JTAG problems with the ZC706, try pressing the POR pushbutton just after powering up the board. I’ll look into a bit later - for now, I’m just glad that I got the BIST running and all is working fine. Maybe this is a problem with my board, or maybe it’s a problem with all the ZC706 boards. So the problem would seem to be that the Zynq isn’t being reset correctly by the reset circuitry on power-up. I checked all my jumpers and DIP switches, everything seemed fine (except jumper J53 which was not in the “default” position, according to the user guide, but in the photo you find in the getting started guide, it would seem that the user guide is wrong).Įventually I started trying everything I could, I tried all the SW11 configurations, I tried my Platform USB II programmer, and then I tried using the reset buttons - and that’s when I got it to work! So I had to press the POR (Power on Reset) pushbutton after I powered up the board in order to get the JTAG boundary scan to work. Anyway, so I got out my oscilloscope and traced through the JTAG chain and it seemed completely fine, everything looking like it was supposed to. When you google this type of error message, you find a lot of unresolved forum posts, I guess because it must happen for many kinds of reasons like a broken JTAG chain, wrong jumper/DIP switch configurations, bad cables, there was even a guy saying that he traced it down to noise on a power supply. Please check the hardware settings and retry!ĮRROR:iMPACT:589 - No devices on chain, can't assign file INFO:iMPACT - iMPACT quit the Identify Chain because it detects there areĪt least 30 'UNKNOWN' type devices on the chain. INFO:iMPACT:501 - '1': Added Device UNKNOWN successfully. INFO:iMPACT:501 - '1': Added Device xc7z045 successfully. Identifying chain contents.'0': : Manufacturer's ID = Xilinx xc7z045, Version : 2 INFO:iMPACT - Digilent Plugin: JTAG Clock Frequency: 10000000 Hz INFO:iMPACT - Digilent Plugin: JTAG Port Number: 0
INFO:iMPACT - Digilent Plugin: Firmware Version: 0105 INFO:iMPACT - Digilent Plugin: Product ID: 31000154
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INFO:iMPACT - Digilent Plugin: Serial Number: 210251841232 INFO:iMPACT - Digilent Plugin: Product Name: Digilent JTAG-SMT2
INFO:iMPACT - Digilent Plugin: User Name: JtagSmt2
INFO:iMPACT - Digilent Plugin: opening device: "JtagSmt2", SN:210251841232 INFO:iMPACT - Digilent Plugin: found 1 device(s). INFO:iMPACT - Digilent Plugin: Plugin Version: 2.4.4 "Downloading Bitstream onto the target board"Ĭopyright (c) 1995-2012 Xilinx, Inc.
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