CATAL(5)						       ALLIANCE FILE FORMATS							  CATAL(5)

NAME

       catal - catalog file format

ORIGIN

       This  software  belongs	to  the  ALLIANCE CAD SYSTEM developed by the ASIM team at LIP6 laboratory of Universite Pierre et Marie CURIE, in
       Paris, France.

       Web : http://asim.lip6.fr/recherche/alliance/
       E-mail : alliance-users@asim.lip6.fr

DESCRIPTION

       Predefined libraries
	      The environment variable MBK_CATA_LIB(1) defines several paths corresponding  to	the  Alliance  predefined  cell  libraries.   Each
	      library is in one unix directory.

	      sxlib		  standard cell library

	      dp_sxlib		  data-path compiler library

	      rflib		  registers library

	      ramlib		  ram library

	      romlib		  rom library

	      padlib		  pads lib

	      For each library, a special file named CATAL describes the library
				  contents.   This  file  must	be  in the same directory as the library cells.  For the Alliance tools, the cells
				  described in the predefined libraries are read only.

       The working library
	      The environment variable MBK_WORK_LIB(1) defines the current working directory.  Its default value is . (dot).  This directory  will
	      contain  the  user cells, seen as read write by the Alliance tools.  It is not necessary to describe all the user cells in a catalog
	      file.  But the user can locally define a catalog file for the working library.  The local catalog file name is set by  the  environ-
	      ment  variable MBK_CATAL_NAME(1), CATAL by default.  Alliance will concatenate all catalog files of the predefined libraries and the
	      optional catalog file of the working library to access the attributs of each cell.

       Cells attributs
	      A cell may be characterized by four attributs:

	      C 		  this attribut means that the cell is a leaf cell in the context of a recursive flatten, for either the layout or
				  netlist view.  The cell will not be flattened.

	      G 		  this	attribut means that the cell has an existing equivalent GDS or CIF representation.  It is used by the sym-
				  bolic to real translation tool, s2r(1), to make direct replacements.

	      F 		  this attribut means that the cell is used as a feed through.

	      D 		  this attribut is used only in the user defined catalog.  As the user is not allowed to delete a cell in a prede-
				  fined library, it is possible to virtually remove a cell of a predefined library with the D attribut in the user
				  defined catalog.

EXAMPLE

       a2_y    C
       a2p_y   C
       a3_y    C
       a3p_y   C
       n1_y    C
       na2_y   C
       p1_y    C
       tie_y   C
	  .
	  .
	  .
       p1_y    G
	  .
	  .
	  .
       tie_y   F

SEE ALSO

       mbk(1), sxlib(1), incatalog(3), incatalogdelete(3), incatalogfeed(3), incataloggds(3), MBK_CATA_LIB(1), MBK_CATAL_NAME(1), MBK_WORK_LIB(1).

BUG REPORT

       This tool is under development at the ASIM department of the LIP6 laboratory.
       We need your feedback to improve documentation and tools.

ASIM
/LIP6							  October 1, 1997							  CATAL(5)