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create placement blockage for instance list

Emil M
Dear all
 
 Is there any way to specify placement blockage for specific instance list using single blockage layer.
For example if I have 1000 instances (with relative naming conventions) can I create placement blockage for that instances.
 
 
Thanks,
Emil 
Parents

  • You might have to  specifySelectiveBlkgGate -cell * -inst * first to override any defaults then repetitive unspecifySelectiveBlkgGate -inst <inst> if wildcards do not apply.
    Honestly I have never personally used this command , because I am currently stuck in edi v10 because of vendor 65 nm flow requirements.
    I still strongly suggest you tell placeDesign where to go, rather than where not to go.

    Shawn



    unspecifySelectiveBlkgGate
    [-help]
    [-cell cellName ]
    [-inst instName ]

    Specifies cells and instances that are forbidden to be placed inside the soft blockage during legalization.
    This command works when setPlaceMode -selectiveBlockage is set to true.

    Parameters
    -cell cellName
        Specifies the cell type name as illegal for soft blockage. You can use wildcards (* or ?) with this parameter.
    -inst instName
        Specifies the instance name as illegal for soft blockage. You can use wildcards (* or ?) with this parameter.

    The following command specifies that cell NR2RLX1 and all instance names that begin with MEMCTLU cannot be moved into soft blockage during legalization.
    unspecifySelectiveBlkgGate -cell NR2RLX1 -inst MEMCTLU*

Reply

  • You might have to  specifySelectiveBlkgGate -cell * -inst * first to override any defaults then repetitive unspecifySelectiveBlkgGate -inst <inst> if wildcards do not apply.
    Honestly I have never personally used this command , because I am currently stuck in edi v10 because of vendor 65 nm flow requirements.
    I still strongly suggest you tell placeDesign where to go, rather than where not to go.

    Shawn



    unspecifySelectiveBlkgGate
    [-help]
    [-cell cellName ]
    [-inst instName ]

    Specifies cells and instances that are forbidden to be placed inside the soft blockage during legalization.
    This command works when setPlaceMode -selectiveBlockage is set to true.

    Parameters
    -cell cellName
        Specifies the cell type name as illegal for soft blockage. You can use wildcards (* or ?) with this parameter.
    -inst instName
        Specifies the instance name as illegal for soft blockage. You can use wildcards (* or ?) with this parameter.

    The following command specifies that cell NR2RLX1 and all instance names that begin with MEMCTLU cannot be moved into soft blockage during legalization.
    unspecifySelectiveBlkgGate -cell NR2RLX1 -inst MEMCTLU*

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