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Name

addlotrs - create a logical transistor

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

Synopsys

#include mlo404.3"
lotrs_list *addlotrs(ptfig, type, x, y, width, length, ps, pd, xs, xd,
ptgrid, ptsource, ptdrain) 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;

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

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 two values :

TRANSN
for a N channel transistor
TRANSP
for a 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. Three connectors are created each time a transistor is added, and the ptgrid, ptsource and ptdrain losigs are attached to the SIG field of the locon of the appropriate connector. The connectors names are grid, source and drain, 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 legal a legal transistor type.

Example

#include mlo404.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); addlotrs(pt, TRANSP, 0, 0, 12, 1, in, vdd, out); }

See Also

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