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Changing the I/O Type of a Pin in Layout View Using SKILL

canbaltaci

Hello,

 

I am using version IC6.1.6-64b.500.11.

I am creating a layout with some SKILL instructions. I would like to add a pin by defining some parameters like terminal name, I/O type etc. From what I have found from different sources, I got close to my goal with the following part of my code:

 

labelID = dbCreateLabel(cv list("M1" "label") 0.5:0.5 "testNet" "centerCenter" "R0" "stick" 1) ;this line seems not so critical but creates a label on the layout that makes it easy to observe the terminal names on the pins

netID = dbCreateNet(cv "testNet")

figID = dbCreateRect(cv list("M1" "label") list(0.0:0.0 1.0:1.0))

pinID = dbCreatePin(netID figID);

 

However, I was not able to change the I/O type. I have tried the following; however, when I open the layout view and check the properties of the square pin, the I/O type appears to be unused:

 

pinID~>direction="inputOutput"

 

Could you please help me regarding this issue?

One additional question: How can I observe the list of the attributes and parameters of an object (like rectangle, path etc.) that I can modify in SKILL?

 

Many thanks in advance.

 

Best regards,

Can

  • Andrew Beckett

    Either explicitly create the terminal:

    dbCreateTerm(netID "testNet" "inputOutput")

    or use:

    pinID~>term~>direction="inputOutput"

    The direction belongs to the terminal, not the pin.

    To see all the attributes of an object, use obj~>? and to see the attributes and values, use obj~>??. Note that not all are editable - you can find that information out in the Virtuoso Design Environment SKILL Reference. It's structured slightly differently depending on the version, but you should find a section or chapter on the various attributes. Search for "Attributes of Cellviews" to find it (in the latest manuals it's in chapter 14).

    Regards,

    Andrew.

  • canbaltaci
    Thank you very much Andrew, it helped me a lot.

    Best regards,
    Can

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