Table of Contents
phfig - mbk physical figure
The phfig is used to describe a hierarchical level of a symbolic layout
and may contain any of the legal physical objects needed for a layout but
a phfig. All coordinates are symbolic and therefor put on a virtual grid
in booth x and y directions.
The declarations needed to work on phfig 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 layout view :
typedef struct phfig {
- struct phfig
- *NEXT;
- struct chain
- *MODELCHAIN;
- struct phseg
- *PHSEG;
- struct phvia
- *PHVIA;
- struct phref
- *PHREF;
- struct phins
- *PHINS;
- struct phcon
- *PHCON;
- char
- *NAME;
- char
- MODE;
- long
- XAB1, YAB1, XAB2, YAB2;
- struct ptype
- *USER;
} phfig_list;
- NEXT
- Pointer to the next phfig present in ram.
- NAME
- Name of the figure. It identifies a figure (or model),
so it should be unique in order to warranty consistency
of cells libraries. In order to ensure this consistency,
the NAME field must be filled with the disk
file name while parsing, and must be used as file name
for driving.
- PHINS
- Pointer to the head of the list of instances being
used for the model description. See phins(3)
for
details.
- PHCON
- Pointer to the head of the list of connectors (terminals)
of the model. See phcon(3)
for details.
- PHSEG
- Pointer to the head of the list of segments (wires) of
the model. See phseg(3)
for details.
- PHVIA
- Pointer to the head of the list of contacs and vias of
the model. See phvia(3)
for details.
- PHREF
- Pointer to the head of the list of references of the
model. See phref(3)
for details.
- XAB1, YAB1, XAB2, YAB2
-
Coordinates of the bottom left corner of the abutment
box of the figure. The abutment box of a model represents
the external visibility of a figure and is what
reference is made to when instanciating the model.
One should well distinguish the abutment box from the
bounding box, which is the smallest rectangle that
includes all cell descriptors. The size and position
of the abutment box is a designer concern, and cannot
be computed.
- MODE
- Caracter indicating the status of the figure in memory.
This field can take two values :
- `A'
- all the cell is loaded in ram.
- `P'
- only information concerning the model interface
is present, that means connectors and
the abutment box. All other lists are empty.
- MODELCHAIN
- Pointer to a chain list, see chain(3)
for details, of
names. These are the names of the models that are at
least instanciated once in the figure.
- USER
- Pointer to a ptype list, see ptype(3)
for details,
that is a general purpose pointer used to share informations
on the model.
- Remark :
- mbk's physical view of a cell is releted to it's logical
view by means of connector names, that must be
identical.
mbk(1)
, addphfig(3)
, getphfig(3)
, delphfig(3)
, loadphfig(3)
, savephfig(3)
,
phins(3)
, phvia(3)
, phcon(3)
, phseg(3)
, phref(3)
, ptype(3)
, lofig(3)
.
This tool is under development at the ASIM/LIP6/UPMC laboratory, cao-vlsi
research team.
We need your feedbak to improve documentation and tools.
If you find bugs, please fill-in the form at
http://asim.lip6.fr/alliance/support/bug-report/
Thanks for doing this.
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page maintained by Czo [Olivier Sirol]
, last updated on 26 May 2000.