Article ID: 000090729 Content Type: Error Messages Last Reviewed: 05/17/2022

Internal Error : Internal Error: Sub-system: LAB, File: /quartus/legality/lab/lab_fm_40_config_creator_module.cpp, Line: 1513

Environment

  • Intel® Quartus® Prime Pro Edition
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    Due to a problem in the Intel® Quartus® Prime Pro Edition Software v21.4, you might see the following internal error when the design uses clocks from multiple partition inputs that are actually connected to the same flat clock source.

    Internal Error: Sub-system: LAB, File: /quartus/legality/lab/lab_fm_40_config_creator_module.cpp, Line: 1513

    LCB SOLVER COULD NOT FIND A SOLUTION. CHECK DEBUG

    An illegal LCB was detected.

    A modification to the atom netlist that was not legalized was made in Stage: Retime.

    This problem affects designs targetting Intel® Agilex™ devices. 

    Resolution

    To work around this problem in the Intel® Quartus® Prime Pro Edition Software version 21.4, combine such duplicated input ports into one. 

    This problem is scheduled to be fixed in a future release of the Intel® Quartus® Prime Pro Edition Software.

    Related Products

    This article applies to 1 products

    Intel® Agilex™ 7 FPGAs and SoC FPGAs

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