DIRECTORY CD, Core, CoreCreate; PadFrame: CEDAR DEFINITIONS = BEGIN ROPE: TYPE = Core.ROPE; Wire: TYPE = Core.Wire; packagePinProp: ATOM; -- on instances; type REF NAT; interpretation depends on package AddPad: PUBLIC PROC [iL: CoreCreate.CellInstances, pad: CoreCreate.WR, type: ATOM, pos: NAT, pa1, pa2, pa3, pa4: CoreCreate.PA _ []] RETURNS [newInsts: CoreCreate.CellInstances]; AddPads: PUBLIC PROC [iL: CoreCreate.CellInstances, pad: Wire, type: ATOM, firstPos: NAT, reverse: BOOL _ FALSE, pa1, pa2, pa3, pa4: CoreCreate.PA _ []] RETURNS [newInsts: CoreCreate.CellInstances]; padDesign: CD.Design; padFrameParamsProp: ATOM; -- on cellType; type PadFrameParameters PadFrameParameters: TYPE = REF PadFrameParametersRec; PadFrameParametersRec: TYPE = RECORD [ horizLayer: ROPE, -- "poly", "metal" or "metal2", runs length of area vertLayer: ROPE, -- branch goes across the area nbPadsX, nbPadsY: NAT, -- one pad is the corner in every side centerDisplacement: CD.Position _ [0, 0] -- quantity to be added to Cabbage.Center ]; END. @PadFrame.mesa Copyright c 1986 by Xerox Corporation. All rights reversed. Louis Monier April 23, 1986 11:32:05 am PST Bertrand Serlet June 22, 1986 2:58:58 pm PDT Common types Generation of the Core Core level: the top level cellType describing a chip is a record cellType containing n+1 instances: n pads and the inner. Every pad instance (excluding the inner) carries the property packagePinProp which is used to derive its geometrical position in the pad frame. The only instance without this property is the inner. Every pad cellType must have a public wire named "Pad" (for Bonnie). type is the name of a pad of the library type is the name of a pad of the library size of pad induces number of pad instanciated Generation of the Layout Layout: the layout atom is $PadFrame. The layout proc creates the four sides, inserts automatically extra power pads, places the inner and calls Cabbage to do the routing. The resulting cell is flattened so that the extra power pads and the routing are expanded. This style produces fixed-size PadFrames. design containing the pads Κ·˜– "Cedar" stylešœ™Jšœ Οmœ1™