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Name

SC_LEFT - place an instance in the current figure at the right of the reference instance"

Synopsys

#include <genlib.h>
void SC_LEFT(insname, symetry)
char *insname;
char symetry;

Origin

This software belongs to the ALLIANCE CAD system from the CAO-VLSI team at ASIM/LIP6/UPMC laboratory.
LIP6/ASIM
University P. et M. Curie 4, place Jussieu 75252 PARIS Cedex 05 FRANCE
Fax : {33/0} 1.44.27.62.86
E-mail support : alliance-support@asim.lip6.fr

Parameters

insname
Name to be given to the instance on the model
symetry
Geometrical operation to be performed on the instance before beeing placed

Description

SC_LEFT add an instance in the current cell. The bottom right corner of the abutment box of the instance is placed, after beeing symetrized and/or rotated, toward the bottom left corner of the abutment box of the reference instance". The newly placed instance becomes the reference instance". The placement takes place only if the netlist is up to day, because the model of the instance is seeked there, in order to ensure consistency.

The symetry argument can take eight legal values :

NOSYM
no geometrical operation is performed
SYM_Y
Y becomes -Y, that means toward X axe symetry
SYM_X
X becomes -X, that means toward Y axe symetry
SYMXY
X becomes -X, Y becomes -Y
ROT_P
a positive 90 degrees rotation take place
ROT_M
a negative 90 degrees rotation take place
SY_RP
Y becomes -Y, and then a positive 90 degrees rotation

take place

SY_RM
Y becomes -Y, and then a negative 90 degrees rotation take place

Errors

SC_LEFT impossible : missing DEF_PHFIG" No figure has been yet specified by a call to DEF_PHFIG. So it isn't possible to place an instance inside it. you must call DEF_PHFIG before any other layout action. SC_LEFT impossible : missing DEF_LOFIG" The current netlist figure is not define, so SC_LEFT doesn't know where to pick up the model. A DEF_LOFIG or a DEF_PHSC is to be performed to avoid this error.
SC_LEFT impossible : no logical instance insname" The instance insname does not exist in the netlist representation of the cell. It may lead us to believe that there is a consistency problem between the two representation of this cell. illegal addphins : transformation is x in insname" The symetry parameter is not one of the define given, but has the integer value x.

Example

#include <genlib.h>
main()
{
/* Create a figure to work on */ DEF_PHSC("cell");
/* Place two instances */
SC_PLACE("ins1", NOSYM, 0L, 0L);
/* negative placement values are allowed */ SC_LEFT("ins2", SYM_Y);
/* Save all that on disk */
SAVE_PHSC();
}

See Also

genlib(1) , DEF_PHSC(3) , SAVE_PHSC(3) , SC_PLACE(3) , SC_TOP(3) , SC_BOTTOM(3) , SC_RIGHT(3) , DEF_PHINS(3) , FLATTEN_PHFIG(3) , FLATTEN_ALL_PHINS(3) , LOINS(3) .

Bug Report

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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