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gdg
Explorer
Explorer
1,296 Views
Registered: ‎03-22-2017

WARNING: ... failed in bitwidth ...

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Should I be worried about these warnings? I was not able to trace them to the real cause in the source code. Do you have any suggestions?

 

WARNING: [SYN 201-303] Root Node tmp_8_2 mapped to expression  {mul a b}, but failed in bitwidth check.                                                                                                                     
WARNING: [SYN 201-303] Root Node tmp_8_1 mapped to expression  {mul a b}, but failed in bitwidth check.                                                                                                                     
WARNING: [SYN 201-303] Root Node tmp_8 mapped to expression  {mul a b}, but failed in bitwidth check.    

 

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chrisz
Xilinx Employee
Xilinx Employee
1,271 Views
Registered: ‎05-06-2008

Hello @gdg,

 

I would not worry about these messages. The system is trying to move the 'mul' function into a DSP component, but the bitwidths need to correlate correctly.  In this situation, the system was not able to utilize the DSP components for this function.

 

Good Luck,
Chris

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chrisz
Xilinx Employee
Xilinx Employee
1,272 Views
Registered: ‎05-06-2008

Hello @gdg,

 

I would not worry about these messages. The system is trying to move the 'mul' function into a DSP component, but the bitwidths need to correlate correctly.  In this situation, the system was not able to utilize the DSP components for this function.

 

Good Luck,
Chris

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