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CMOD S6 PROM Verification



I have just received a CMOS S6 evaluation board (410-282P-KIT). Before I program it with my development code I wanted to verify my setup is working Ok.

I am using Xilinx 14.7 on a Windows 7 PC. I have loaded iMPACT and successfully initialised the scan chain. I assigned the demo bit file to the FPGA and the demo mcs file to the flash device. When I ask it to iMPACT to verify the contents of the flash memory it fails at address 0.

The iMPACT console output is displayed below.

INFO:iMPACT - Current time: 11/07/2016 13:18:16
PROGRESS_START - Starting Operation.
Maximum TCK operating frequency for this device chain: 25000000.
Validating chain...
Boundary-scan chain validated successfully.
'1': IDCODE is '012018' (in hex).
'1': ID Check passed.
 '1': IDCODE is '012018' (in hex).
'1': ID Check passed.
 '1': Reading device contents...
Failed at address, 0
'1': Verification Terminated
PROGRESS_END - End Operation.
Elapsed time =      1 sec.

Is it possible to verify the PROM contents and if so what am I doing wrong?



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I have subsequently programmed the board with my new firmware which was successfully verified.

This leads me to conclude that the demo firmware on the website is different to the firmware programmed on the evaluation board. Either I have a board with out-of-date firmware or the website has out-of-date firmware.


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Hi stewart,

The bit file shipped with the device is not identical but are functionally equivalent to the bit file on the website. Because of this difference you will not be able to verify the quadspi with the bit file from the website. Your hardware is working correctly.

thank you,


Edited by jpeyron
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