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ADDLOTRS(3)		     MBK LOGICAL FUNCTIONS		   ADDLOTRS(3)

NAME
       addlotrs	- create a logical transistor

SYNOPSIS
       #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 computa-
			   tion

       ptgrid		   Pointer  to the signal to be	connected on the tran-
			   sistor grid

       ptsource		   Pointer to the signal to be connected on the	 tran-
			   sistor source

       ptdrain		   Pointer  to the signal to be	connected on the tran-
			   sistor drain

       ptbulk		   Pointer to the signal to be connected on the	 tran-
			   sistor bulk

       name		   Transistor instance name

DESCRIPTION
       addlotrs	 creates a new transistor, and adds it to the list of transis-
       tors 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 respec-
       tivly 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)

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