DIRECTORY CD, Rope, SymTab;CDSimpleRules: CEDAR DEFINITIONS =			BEGIN NotKnown: ERROR;MinWidth: PROC [layer: CD.Layer] RETURNS [CD.Number];MinDist: PROC [l1, l2: CD.Layer] RETURNS [CD.Number];MaxWidth: PROC [layer: CD.Layer] RETURNS [CD.Number];GetLayer: PROC [technology, layer: REF] RETURNS [CD.Layer];Rect: PROC [size: CD.Position, layer: CD.Layer] RETURNS [CD.Object];Contact: PROC [l1, l2: CD.Layer] RETURNS [CD.Object];ImplementTechnology: PROC [technology: CD.Technology, minWidth: PROC [layer: CD.Layer] RETURNS [CD.Number],minDist: PROC [l1, l2: CD.Layer] RETURNS [CD.Number],maxWidth: PROC [layer: CD.Layer] RETURNS [CD.Number]_NIL,contact: PROC [l1, l2: CD.Layer] RETURNS [CD.Object],layerTable: SymTab.Ref_NIL,technologyNames: LIST OF Rope.ROPE _ NIL];END.   ,  CDSimpleRules.mesa (part of ChipNDale)Copyright c 1985, 1986 by Xerox Corporation.  All rights reserved.by Christian Jacobi, July 5, 1985 4:58:37 pm PDTLast Edited by Christian Jacobi, March 14, 1986 2:37:23 pm PSTThis module is used to hide the actual technology used from otherwise quite technology independent routing software.  Not all technologies do support this module.  If used for a technology which does not support this module, procedures will raise NotKnown.--general procedures-- Minimum width of conductors.-- Might return 0 if nothing specified.-- (Width of interrest rect).-- Minimum distance between unrelated conductors.-- 0 if no interaction.-- Error if l1 and l2 from different technologies. -- Raises NotKnown if distance (or technology) is not known. -- (Distance of interrest rects).-- Maximum width of features.-- (width of interrest rects).-- Tries to figure out a layer, given names. -- Use only to get technology specific names. -- A little bit more forgiving than CD.FetchLayer...-- Raises NotKnown if not known.-- size: interest rect-- For conveniance only, duplicate of CDRects...-- nil if any complication or no contact possible...-- use CD.InterestRect to get size-- Error if l1 and l2 from different technologies. --technology implementors proceduresÊz  ˜ šœ&™&Jšœ
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