Article ID: 000087734 Content Type: Troubleshooting Last Reviewed: 03/11/2023

Why do I incorrectly read "X" when simulating memories using altera_syncram in the Synopsys* VCS* simulator?

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 version 21.3 and earlier, you may observe an incorrect "X" value on the output data in the altera_syncram simulation model block. This problem occurs when you turn on X-prop mode in the Synopsys* VCS* simulator.

    Resolution

    To work around this problem, exclude the altera_syncram module from the Synopsys* VCS* simulator X-prop mode.

    Related Products

    This article applies to 1 products

    Intel® Programmable Devices

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