LOCON(3)						 MBK LOGICAL STRUCTURE DEFINITIONS						  LOCON(3)

NAME

       locon - mbk logical connector

DESCRIPTION

       The  locon  is  used to describe a connector of the logical view     of a figure. Connectors are describing the cell interface, and are the
       link between its physical and logical views, so the names must be the same.

       The declarations needed to work on locon are available in the header file "/labo/include/mlo404.h", where '404' is the actual mbk version.

       The following C structure supports the description of the logical connector :
	      typedef struct locon {
		 struct locon	  *NEXT;
		 char		  *NAME;
		 struct losig	  *SIG;
		 void		  *ROOT;
		 char		  DIRECTION;
		 char		  TYPE;
		 struct ptype	  *USER;
	      } locon_list;

       NEXT		   Pointer to the next locon of the list.

       NAME		   Name of the connector. It identifies the connector, so it should unique in a given logical figure. A logical  connector
			   with a given name correspond to the physical connector or connectors of this name.

       SIG		   Pointer to the signal linked to the connector. This signal is, of course, unique. See losig(3) for details.

       ROOT		   Pointer  to	the object it belongs to. This object may be either a lofig, or a loins, depending on the type of the con-
			   nector.  See lofig(3) and loins for details.

       DIRECTION	   This indicates the way of the information going through the connector.  Six directions are legal :

			   IN		       input

			   OUT		       output

			   INOUT	       input and output

			   UNKNOWN	       no information is available

			   TRISTATE	       tristate output

			   TRANSCV	       tristate output and input

       TYPE		   Character indicating if the connector belongs to a model or an instance. It can take two values :

			   EXTERNAL	       for figure connectors

			   INTERNAL	       for instance connectors

			   The TYPE is needed to appropriatly cast the ROOT field, and must be approriatly filled by the parsers. A misuse  of	it
			   may cause strange behaviours.

       USER		   Pointer  to	a  ptype  list, see ptype for details, that is a general purpose pointer used to share informations on the
			   connector.

SEE ALSO

       mbk(1), mbk(3), addlocon(3), getlocon(3), dellocon(3), losig(3), ptype(3), loins(3), lofig(3).

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							  LOCON(3)