NAME

       addlotrs - create a logical transistor

SYNOPSYS

       #include "mlo.h"
       lotrs_list ∗addlotrs(ptfig, type, x, y, width, length,
                              ps, pd, xs, xd,
                              ptgrid, ptsource, ptdrain, ptbulk, name)
       lofig_list ∗ptfig;
       char type;
       long x, y;
       unsigned short width, length;
       unsigned short ps, pd;
       unsigned short xs, xd;
       losig_list ∗ptgrid, ∗ptsource, ∗ptdrain, ∗ptbulk;
       const char ∗name;

PARAMETERS

       ptfig               Pointer to the figure in which the transistor should be added

       type                transistor type

       x, y                Transistor coordinates

       width, length       Transistor grid width and length

       ps, pd              Perimeters of the source and drain

       xs, xd              Values  to  compute the areas of the source and drain, see lotrs(3) for the effective
                           area computation

       ptgrid              Pointer to the signal to be connected on the transistor grid

       ptsource            Pointer to the signal to be connected on the transistor source

       ptdrain             Pointer to the signal to be connected on the transistor drain

       ptbulk              Pointer to the signal to be connected on the transistor bulk

       name                Transistor instance name

DESCRIPTION

       addlotrs creates a new transistor, and adds it to the list of transistors pointed to by ptfig->LOTRS. The
       new transistor is added in front of the list, and becomes itself the list head.
       The type parameter can take six values :

              TRANSN              for a N channel transistor

              TRANSP              for a P channel transistor

              TRANSN_FAST         for a high speed N channel transistor

              TRANSP_FAST         for a high speed P channel transistor

              TRANSN_HVIO         for a low leakage N channel transistor

              TRANSP_HVIO         for a low leakage P channel transistor

       The x, y, width , length, ps, pd, xs and xd,  arguments fill respectivly the X, Y, WIDTH, LENGTH, PS, PD,
       XS and XD fields.
       Four connectors are created each time a transistor is added, and the ptgrid, ptsource, ptdrain and ptbulk
       losigs are attached to the SIG field of the locon of the appropriate connector. The connectors names  are
       grid, source, drain and bulk, their direction, DIR, are set to 'T', and their TYPE INTERNAL.  For details
       on the structures, see locon(3) and lotrs(3).

RETURN VALUE

       addlotrs returns a pointer to the newly created transistor.

ERRORS

       "∗∗∗ mbk error ∗∗∗ illegal transistor type : type"
              The type is not a legal transistor type.

EXAMPLE

       #include "mlo.h"
       void n1_y() /∗ transistor netlist of an inverter ∗/
       {
       lofig_list ∗pt;
       losig_list ∗in, ∗out, ∗vdd, ∗vss;
          pt = addlofig("n1_y");
          addlocon(pt, "in", in = givelosig(pt, 0), IN);
          addlocon(pt, "out", out = givelosig(pt, 1), OUT);
          addlocon(pt, "vdd", vdd = givelosig(pt, 2), IN);
          addlocon(pt, "vss", vdd = givelosig(pt, 3), IN);
          addlotrs(pt, TRANSN, 0, 0, 6, 1, in, vss, out, vss, trn_n1_y);
          addlotrs(pt, TRANSP, 0, 0, 12, 1, in, vdd, out, vdd, trp_n1_y);
       }

SEE ALSO

       mbk(1), lofig(3), lotrs(3), locon(3), dellotrs(3).

ASIM/LIP6                                        August 6, 2002                                      ADDLOTRS(3)