NAME

       DPGEN_NOR2MASK - Programmable Mask Macro-Generator

SYNOPSIS

       #include  <genlib.h>

       void GENLIB_MACRO (DPGEN_NOR2MASK, char *modelname, long flags, long N, char *constVal);

DESCRIPTION

       Generate a N bits conditionnal NOR mask named modelname.

       How it works :

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

       • if the cmd signal is set to '1', the mask IS applied, the output is  the  complemented  result  of  the
         input value ORed with the mask (suplied 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 operator.

       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 or X"0000FFFF") WHEN '1';

EXAMPLE

       GENLIB_MACRO(DPGEN_NOR2MASK, "model_nor2mask_0000FFFF_32"
                                  , F_BEHAV|F_PLACE
                                  , 32
                                  , "0x0000FFFF" /* A string! */
                                  );

       GENLIB_LOINS( "model_nor2mask_0000FFFF_32"
                   , "instance1_nor2mask_32"
                   , "cmd"
                   , "i0[31:0]"
                   ,  "q[31:0]"
                   , "vdd", "vss", NULL
                   );

SEE ALSO

       GENLIB_MACRO(3), genlib(1)