NAME

       GENLIB_DEF_PHSC - load a netlist and open a layout model as current figure

SYNOPSYS

       #include <genlib.h>
       void GENLIB_DEF_PHSC(cellname)
       char ∗cellname;

PARAMETERS

       cellname            Name of the netlist figure to be looked for in memory or on disk, for futher physical
                           placement.

DESCRIPTION

       DEF_PHSC defines the current working figure by it's name, the cellname argument, for layout  and  netlist
       operations.   It  can  be use anywhere in the genlib program, but must appear at least once at the top of
       it, since it also initalize the user's preferences through environment variables.
       DEF_PHSC looks for the netlist figure cellname in memory, and if not found, on  disk.  If  it  fails,  an
       error occurs and the process terminates.
       The  main  issue  of  this function is to allow the netlist and physical descriptions of a circuit in two
       separate files, for standard cell approach. So there is no need to recreate the netlist  view  each  time
       the placement changes.
       If  the physical figure called cellname doesn't exists in memory, it is created.  If it already exists in
       memory, it makes it the current working figure.  DEF_PHSC doesn't look on disk for the  figure  cellname,
       so be careful not to overwrite an existing file while saving later on.

EXAMPLE

       #include <genlib.h>
       main()
       {
            /∗ Create a figure to work on  ∗/
            GENLIB_DEF_PHSC("mycell");
            /∗ Place an instance ∗/
            GENLIB_SC_PLACE("instance", NOSYM,0L,0L);
            /∗ Save all that on disk ∗/
            GENLIB_SAVE_PHSC();
       }

SEE ALSO

       genlib(1),     GENLIB_SAVE_PHSC(3),     GENLIB_SC_PLACE(3),     GENLIB_SC_TOP(3),    GENLIB_SC_BOTTOM(3),
       GENLIB_SC_LEFT(3), GENLIB_SC_RIGHT(3).