Article ID: 000079959 Content Type: Error Messages Last Reviewed: 08/08/2023

Error (15629): Atom "comb~6" is dependent on unconnected input ports

Environment

  • Quartus® II Subscription Edition
  • PLL Reconfig Intel® FPGA IP
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    You may see the error when instantiating the Altera® PLL Reconfiguration IP and enabling physical synthesis in the Quartus® II software.

    Resolution

    Modify the altera_pll_reconfig_core.v file as shown below:

    1. Find the generic_lcell_comb module definition
    2. Add (* altera_attribute = "-name ADV_NETLIST_OPT_ALLOWED \"NEVER ALLOW\"" *) before the module keyword.

    This problem is fixed in Quartus® Software version 13.1.

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