phcon - mbk physical connector

       The phcon structure is used to describe a connector belonging to a
       symbolic layout model, see phfig(3) for details. A strong convention on
       the mbk data structure is that two connector internally wired have the
       same name, the 'logical' name.

       The declarations needed to work on phcon are available in the header
       file "/labo/include/mph402.h", where '402' is the actual mbk version.

       The following C structure supports the description of the connector :
              typedef struct phcon {
                 struct phcon     ∗NEXT;
                 char             ∗NAME;
                 long             INDEX;
                 long             XCON, YCON;
                 long             WIDTH;
                 char             ORIENT;
                 char             LAYER;
                 struct ptype     ∗USER;
              } phcon_list;

       NEXT                Pointer to the next connector of the model.

       NAME                Name of the connector. A model may posseses more
                           than one connector with a given name, if they are
                           internally wired.

       INDEX               Index of the connector. Since a model may have many
                           connectors with the same name, it is needed to be
                           able to point out one of them. The index allows to
                           distinguish every connector using a topological
                           order. This field is filled by the addphcon
                           function, and shall not be modified otherwise.

       XCON, YCON          Connector coordinates. the point (XCON, YCON) must
                           be placed on or inside of the abutment box of the

       ORIENT              Caracter indicating the face of the model on the
                           which the connector is placed.  It may take four
                           values :

                           NORTH               connector placed on top of cell

                           SOUTH               connector placed on bottom of

                           EAST                connector placed on right of

                           WEST                connector placed on left of

       LAYER               Symbolic layer used for the connector. The legal
                           values are :

                           NWELL               N bulk

                           PWELL               P bulk

                           NTIE                N implant in P bulk

                           PTIE                P implant in N bulk

                           NDIF                N diffusion

                           PDIF                P diffusion

                           NTRANS              N transistor

                           PTRANS              P transistor

                           POLY                polysilicium

                           ALU1                first metal

                           ALU2                second metal

                           ALU3                third metal

                           TPOLY               polysilicum through route

                           TALU1               first metal through route

                           TALU2               second metal through route

                           TALU3               third metal through route

       WIDTH               Width of the connector. The physical extension,
                           concerning the width, of a connector is paralell to
                           its face.

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

       mbk(1), addphcon(3), getphcon(3), delphcon(3), phfig(3), phref(3),
       locon(3), ptype(3).

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

ASIM/LIP6                       October 1, 1997                       PHCON(3)