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What do you know about RAVEL versus SKILL ?

John T

Show what you know! Can you answer these quick fire questions:

  1. True or False:  RAVEL is “declarative” while SKILL is “procedural/functional”?

  1. True or False: RAVEL violations can be cross‑probed in the layout via the DRC Browser?

 

  1. Choose the best option, “when to use”:
    A. SKILL to create new database objects; RAVEL to check rules/flag violations
    B. RAVEL to create symbols; SKILL to list DRCs
    C. SKILL only for DFM checks; RAVEL only for routing
    D. They’re interchangeable
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  • John T

    The answer to this is A:

    The RAVEL language was specifically designed to check and create custom design rules and flag design violations; unlike SKILL for accessing and manipulating database objects. 


    RAVEL is far better suited to writing custom DRCs than SKILL. The development effort needed and the code body text is much shorter. This in turn requires less effort to edit, repurpose or debug. Ravel rule files can be imported by menu, batch or a dedicated ui in the PCB Editor or Advanced Package Designer. 

     

    More information can be found here:

     BoardSurfers: Training Insights: Advanced Design Verification with RAVEL 

     BoardSurfers: Training Insights: How to Run a RAVEL Rule from the GUI 

    https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1O0V000006AhKSUA0&pageName=ArticleContent

    Do share any thoughts or experience you have with this language and features. 

Reply
  • John T

    The answer to this is A:

    The RAVEL language was specifically designed to check and create custom design rules and flag design violations; unlike SKILL for accessing and manipulating database objects. 


    RAVEL is far better suited to writing custom DRCs than SKILL. The development effort needed and the code body text is much shorter. This in turn requires less effort to edit, repurpose or debug. Ravel rule files can be imported by menu, batch or a dedicated ui in the PCB Editor or Advanced Package Designer. 

     

    More information can be found here:

     BoardSurfers: Training Insights: Advanced Design Verification with RAVEL 

     BoardSurfers: Training Insights: How to Run a RAVEL Rule from the GUI 

    https://support.cadence.com/apex/ArticleAttachmentPortal?id=a1O0V000006AhKSUA0&pageName=ArticleContent

    Do share any thoughts or experience you have with this language and features. 

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