NAME

       DPGEN_ADSB2F - Adder/Substractor Macro-Generator

SYNOPSIS

       #include  <genlib.h>

       void GENLIB_MACRO (DPGEN_ADSB2F, char *modelname, long flags, long N);

DESCRIPTION

       Generate a N bits adder/substractor named modelname.

       How it works :

       • if the add_sub signal is set to '0' an addition is performed, otherwise it's a substraction.

       • Operation  can be either signed or unsigned. In unsigned mode c31 is the overflow, in unsigned mode you
         have to compute overflow by XORing c31 and c30.

   TERMINAL NAMES
       1. add_sub : select addition or substraction (input, 1 bit).

       2. c31 : carry out. In unsigned mode, this is the overflow (output, 1 bits).

       3. c30 : used to compute overflow in signed mode : overflow := c31 xor c30 (output, 1 bits).

       4. i1 : first operand (input, N bits).

       5. i0 : second operand (input, N bits).

       6. q : output (N bits).

       7. vdd : power.

       8. vss : ground.

EXAMPLE

       GENLIB_MACRO(DPGEN_ADSB2F, "model_adsb2f_32"
                                   , F_BEHAV|F_PLACE
                                   , 32
                                   );

       GENLIB_LOINS( "model_adsb2f_32"
                   , "instance1_adsb2f_32"
                   , "add_sub"
                   , "c32"
                   , "c31"
                   , "i1[31:0]"
                   , "i0[31:0]"
                   ,  "q[31:0]"
                   , "vdd", "vss", NULL
                   );

SEE ALSO

       GENLIB_MACRO(3), genlib(1)

ASIM/LIP6                                         30 July 2004                                   DPGEN_ADSB2F(3)