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odd techLayerProperties "?" and "()"

goofycat

Hello,

techLayerProperties makes perfect sense. However, in a file called “analoglib” (which I dumped), I saw things like

----------------------

techLayerProperties(

;( PropName               Layer1 [ Layer2 ]          PropValue )

;( --------               ------ ----------           --------- )

( canDrawOnLayer?       ("90"             drawing )   t )

( layerSelectable?       ("90"             drawing )   t )

( streamDatatypeNumber   ("90"            drawing )   0 )

( streamLayerNumber     ("90"             drawing )   0 )

( streamTranslateLayer?   ("90"             drawing )   "FALSE" )

( canDrawOnLayer?       (hardFence         drawing )   t )

( layerSelectable?       (hardFence       drawing )   t )

( streamDatatypeNumber   (hardFence         drawing )   0 )

( streamLayerNumber     (hardFence         drawing )   0 )

( streamTranslateLayer?   (hardFence         drawing )   "FALSE" )

( canDrawOnLayer?       (softFence         drawing )   t )

( layerSelectable?       (softFence         drawing )   t )

( streamDatatypeNumber   (softFence         drawing )   0 )

( streamLayerNumber     (softFence         drawing )   0 )

( streamTranslateLayer?   (softFence         drawing )   "FALSE" )

( canDrawOnLayer?       (y0               drawing )   t )

( layerSelectable?       (y0               drawing )   t )

( streamDatatypeNumber   (y0               drawing )   0 )

( streamLayerNumber     (y0               drawing )   0 )

( streamTranslateLayer?   (y0               drawing )   "FALSE" )

( canDrawOnLayer?       (y1               drawing )   t )

( layerSelectable?       (y1               drawing )   t )

( streamDatatypeNumber   (y1               drawing )   0 )

( streamLayerNumber     (y1               drawing )   0 )

( streamTranslateLayer?   (y1               drawing )   "FALSE" )

( canDrawOnLayer?       (y2               drawing )   t )

( layerSelectable?       (y2               drawing )   t )

( streamDatatypeNumber   (y2               drawing )   0 )

( streamLayerNumber     (y2               drawing )   0 )

( streamTranslateLayer?   (y2               drawing )   "FALSE" )

( canDrawOnLayer?       (y3               drawing )   t )

( layerSelectable?       (y3               drawing )   t )

( streamDatatypeNumber   (y3               drawing )   0 )

( streamLayerNumber     (y3               drawing )   0 )

( streamTranslateLayer?   (y3               drawing )   "FALSE" )

( canDrawOnLayer?       (y4               drawing )   t )

( layerSelectable?       (y4               drawing )   t )

( streamDatatypeNumber   (y4               drawing )   0 )

( streamLayerNumber     (y4               drawing )   0 )

( streamTranslateLayer?   (y4               drawing )   "FALSE" )

( canDrawOnLayer?       (y5               drawing )   t )

( layerSelectable?       (y5               drawing )   t )

( streamDatatypeNumber   (y5               drawing )   0 )

( streamLayerNumber     (y5               drawing )   0 )

( streamTranslateLayer?   (y5               drawing )   "FALSE" )

( canDrawOnLayer?       (y6               drawing )   t )

( layerSelectable?       (y6               drawing )   t )

( streamDatatypeNumber   (y6               drawing )   0 )

( streamLayerNumber     (y6               drawing )   0 )

( streamTranslateLayer?   (y6               drawing )   "FALSE" )

( canDrawOnLayer?       (y7               drawing )   t )

( layerSelectable?       (y7               drawing )   t )

( streamDatatypeNumber   (y7               drawing )   0 )

( streamLayerNumber     (y7               drawing )   0 )

( streamTranslateLayer?   (y7               drawing )   "FALSE" )

( canDrawOnLayer?       (y8               drawing )   t )

( layerSelectable?       (y8               drawing )   t )

( streamDatatypeNumber   (y8               drawing )   0 )

( streamLayerNumber     (y8               drawing )   0 )

( streamTranslateLayer?   (y8               drawing )   "FALSE" )

---------------------

Each line have a “?” after t_propName, and there is no “t_layer1 [t_layers2]” but rather a parenthesis-contained pair.

Does this file make sense?

 

G

  • Andrew Beckett

    These are old legacy properties which used to be used in IC5141; I don't think they're used any more. It's legal to have a question mark in the name of a property, and the documentation for techLayerProperties does also show it being used with a layer-purpose pair (a list of layer name and purpose name in parentheses). 

    In IC5141 (CDB) the information about whether  layers were translated to stream (aka GDSII) format, together with the layer number and datatype number were stored in the tech file as properties; in OpenAccess this is no longer the case and instead a separate layerMap file is provided.

    So this is all sensible - you're just looking at some legacy data that remains in the analogLib technology database. You're unlikely to see that in any newly created library (particularly a technology library) unless it was converted from CDB to OA.

    Regards,

    Andrew.

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