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ADDLOCAP(3)		     MBK LOGICAL FUNCTIONS		   ADDLOCAP(3)

NAME
       addlocap	- create a logical capacitor

SYNOPSIS
       #include	"mlo.h"

       locap_list *addlocap(ptfig,type,capa,tcon,bcon,name)
       lofig_list *ptfig ;
       char type ;
       double capa ;
       losig_list *tcon, *bcon ;
       const char *name	;

PARAMETERS
       ptfig		   Pointer to the figure in which the capacitor	should
			   be added

       type		   Capacitor type

       capa		   Capacitance value in	Farads

       tcon		   Pointer to the signal to be connected on the	capac-
			   itor	top plate

       bcon		   Pointer to the signal to be connected on the	capac-
			   itor	bottom plate

       name		   Capacitor instance name

DESCRIPTION
       addlocap	creates	a new capacitor, and adds it to	the list of capacitors
       pointed	to  by	ptfig -> LOCAP.	The new	capacitor is added in front of
       the list, and becomes itself the	list head.
       The type	parameter can take two values :

	      CAPMIM		  for a	metal/metal capacitor (the  top	 plate
				  and  the  bottom  plate layers are different
				  metal	layers)

	      CAPPNWELL		  for a	POLY/NWELL capacitor (if available  in
				  the  technology).  The  top  plate  layer is
				  POLY,	bottom plate is	NWELL.

       The capa	argument is the	capacitance value in Farads.
       Two connectors are created each time a capacitor	is added, and the tcon
       and bcon	losigs are attached to the SIG field of	the locon of  the  ap-
       propriate  connector.  The  connectors  names are tcon  (top plate) and
       bcon (bottom plate); their direction, DIR, are set to  'P',  and	 their
       TYPE  INTERNAL.	 For  details  on the structures, see locon(3) and lo-
       cap(3).

RETURN VALUE
       addlocap	returns	a pointer to the newly created capacitor.

ERRORS
       "*** mbk	error *** illegal capacitor type : type"
	      The type is not a	legal capacitor	type.

EXAMPLE
       #include	"mlo.h"

       void parallel_capacitors(void) /* netlist of two	parallel capacitors */
       {
	 lofig_list *pt	 = NULL	;
	 losig_list *in	 = NULL	;
	 losig_list *out = NULL	;

	 pt = addlofig("parallel_capacitors") ;
	 addlocon(pt,"in",in = givelosig(pt,0),IN) ;
	 addlocon(pt,"out",out = givelosig(pt,1),OUT) ;

	 addlocap(pt,CAPMIM,0.5e-6,in,out,"cap1") ;
	 addlocap(pt,CAPMIM,0.5e-6,in,out,"cap2") ;
       }

SEE ALSO
       mbk(1), lofig(3), locap(3), locon(3), dellocap(3).

ASIM/LIP6			August 14, 2002			   ADDLOCAP(3)

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