Article ID: 000086642 Content Type: Troubleshooting Last Reviewed: 10/20/2016

Info (276007): RAM logic <RAM name> is uninferred due to asynchronous read logic

Environment

  • Quartus® II Subscription Edition
  • Intel® Quartus® Prime Pro Edition
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    Description

    In the Quartus® Prime software, RAMs can only be inferred if the read logic is synchronous.

    You may also see uninferred RAMs with this message if

    • the read address is registered but has a preserve attribute attached to it.
    • the read address is registered but has a fast_input_register assignment and is implemented as an IO register.

     

    Resolution

    To infer your RAM make sure that the read logic is synchronous and the read address register can be implemented in the RAM.

    Related Products

    This article applies to 1 products

    Intel® Programmable Devices

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