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Create new PCell attributes or properties to hold a list of object identifiers

Dynamic Duo

Dear All,

I am trying to do the following with SKILL in IC6.1.5.500.12:
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Given: an object identifier of a schematic instance Inst0_sch = db: 0x15b7f112, where Inst0_sch is a MOSFET PCell

Obj: assign a list of object identifiers (from the same schematic) listA = list( db:0x15b7f345 db:0x15b7f456 db:0x15b7f678 ) to Inst0_sch as a new attribute or property: "impactNeighbors"
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I am thinking this would make query much easier, sort of to minic the reference/pointers in C/C++.
But haven't been able to get it work. Somehow I cannot make new attributes.. And in making a new property, I did not see supported valueType of l_objId?

Alternatively we can define a global list of lists: memlist_, to hold these "impactNeighbors", then assign the list index as a new property to Inst0_sch, e.g.,
dbSetq(Inst0_sch 32 "impactNeighbors"), where nth(32 memlist_) is listA..

But I'd strongly prefer the first way.. Could anyone give me some pointers?

Thanks a bunch!
Duo

Parents

  • Many thanks for the clarification, Andrew.
    I guess that means what I wanted cannot be done using properties.. But what about *attributes*?

    when I do inst0_sch~>??, there are couple of them storing lists of dbId's, and that's exactly what I want.
    E.g, inst0_sch~>instTerms, inst0_sch~>prop, inst0_sch~>conns

    Is there a way I create a new attribute inst0_sch~>impactNeighbors? Considering the existing attributes, I think such an idea should make sense..

    Mini conclusion: Will use groups to store object relations in the database.

    Regards,
    Duo

Reply

  • Many thanks for the clarification, Andrew.
    I guess that means what I wanted cannot be done using properties.. But what about *attributes*?

    when I do inst0_sch~>??, there are couple of them storing lists of dbId's, and that's exactly what I want.
    E.g, inst0_sch~>instTerms, inst0_sch~>prop, inst0_sch~>conns

    Is there a way I create a new attribute inst0_sch~>impactNeighbors? Considering the existing attributes, I think such an idea should make sense..

    Mini conclusion: Will use groups to store object relations in the database.

    Regards,
    Duo

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