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Man Pages

Manual Reference Pages  -  PHSEG (3)

[Include document man1/alc_contents.mac]

   phseg    phseg


phseg - mbk physical segment


See Also


The phseg structure is used to describe a segment belonging to a symbolic layout model, see phfig(3) for details. Transistors are segments of a particular layer.

The declarations needed to work on phseg 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 segment :

typedef struct phseg {
   struct phseg     *NEXT;
   char             *NAME;
   long             X1,Y1,X2,Y2;
   long             WIDTH;
   char             TYPE;
   char             LAYER;
   struct ptype     *USER;
} phseg_list;

NEXT Pointer to the next segment in the list.
NAME Name of the segment. The name is not an identifier, and a name is present only if the designer used one for debug purposes.
X1, Y1, X2, Y2 Coordinates of each end of the segment. Since it’s a symbolic segment, one alway has either X1 = X2 or Y1 = Y2. Furthermore, by construction, it is warranty, if one accesses the data structure through the legal functions, that X1 <= X2 and Y1 <= Y2.
TYPE This caracter can take four values :
LEFT or RIGHT if Y1 = Y2. The exact value is chosen by addphseg, depending upon X1 and X2 relations.
UP or DOWN if X1 = X2
LAYER Symbolic layer used for the segment. 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 segment. The physical extension of a segment is perpendicular to its direction.
USER Pointer to a ptype list, see ptype for details, that is a general purpose pointer used to share informations on the segment.


mbk(1), addphseg(3), getphseg(3), delphseg(3), phfig(3), ptype(3).

[Include document man1/alc_bug_report.1]

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ASIM/LIP6 PHSEG (3) October 1, 1997

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