Zero detector macro-generator
#include <genlib.h>
void GENLIB_MACRO (DPGEN_NUL, char *modelname, long flags, long N);
Generate a N bits zero detector named modelname.
1.
i0 : value to check (input, N bits).
2.
q : null flag (output, 1 bit).
3.
vdd : power.
4.
vss : ground.
q <= <= '1' WHEN (i0 = X"00000000") ELSE '0';
GENLIB_MACRO(DPGEN_NUL, "model_nul_32" , F_BEHAV|F_PLACE , 32 ); GENLIB_LOINS( "model_nul_32" , "instance1_nul_32" , "i0[31:0]" , "q" /* Flag null. */ , "vdd", "vss", NULL );