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Observer
Observer
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Registered: ‎12-11-2017

Synthesis failed [Synth 8-3538]

I'm working with Vivado 2017.4. I declare a register of size 32767 and get the following result in the log, after which synthesis fails.

 

[Synth 8-3538] Detected potentially large (wide) register rom_reg ["C:/Users/mnpsim/Desktop/Malhar/clocked_tutorial/clocked_tutorial.srcs/sources_1/new/dff.v":46]

 

Why do I get this issue?

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Mentor
Mentor
655 Views
Registered: ‎02-24-2014

That's an extremely wide register.  Are you absolutely sure your design needs a register that wide?   The bigger FPGA's can handle it, yes, but it looks like Vivado considers this to be an unintentional error in the code.   It might be possible to downgrade the error to a warning.   Can you post the actual log, and perhaps the code too?

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