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DPGEN_XNOR2MASK(3)	Alliance - genlib User's Manual	    DPGEN_XNOR2MASK(3)

NAME
       DPGEN_XNOR2MASK - Programmable Mask Macro-Generator

SYNOPSIS
       #include	 <genlib.h>

       void  GENLIB_MACRO  (DPGEN_XNOR2MASK, char *modelname, long flags, long
       N, char *constVal);

DESCRIPTION
       Generate	a N bits conditionnal XNOR mask	named modelname.

       How it works :

       o if the	cmd signal is set to '0', the mask  is	NOT  applied,  so  the
	 whole operator	behave like an inverter.

       o if  the  cmd signal is	set to '1', the	mask IS	applied, the output is
	 the complemented result of the	input value XORed with the  mask  (su-
	 plied by constVal).

       The  constant  constVal is given	to the macro-generator call, therefore
       the value cannot	be changed afterward : it's hard wired in  the	opera-
       tor.

       A  common error is to give a real C constant for	the constVal argument.
       Be aware	that it	is a character string.

   TERMINAL NAMES
       1. cmd :	mask control (1	bit).

       2. i0 : input (N	bits).

       3. q : output (N	bits).

       4. vdd :	power.

       5. vss :	ground.

   BEHAVIOR
       nq <= WITH cmd SELECT not(i0)		     WHEN '0',
			     not(i0 xor	X"0000FFFF") WHEN '1';

EXAMPLE
       GENLIB_MACRO(DPGEN_XNOR2MASK, "model_xnor2mask_0000FFFF_32"
				   , F_BEHAV|F_PLACE
				   , 32
				   , "0x0000FFFF" /* A string! */
				   );

       GENLIB_LOINS( "model_xnor2mask_0000FFFF_32"
		   , "instance1_xnor2mask_32"
		   , "cmd"
		   , "i0[31:0]"
		   ,  "q[31:0]"
		   , "vdd", "vss", NULL
		   );

SEE ALSO
       GENLIB_MACRO(3),	genlib(1)

ASIM/LIP6			 30 July 2004		    DPGEN_XNOR2MASK(3)
NAME | SYNOPSIS | DESCRIPTION | EXAMPLE | SEE ALSO

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