techlibs/common/abc9_map.v

   1 `ifdef DFF
   2 (* techmap_celltype = "$_DFF_[PN]_" *)
   3 module $_DFF_x_(input C, D, output Q);
   4   parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
   5   parameter _TECHMAP_CELLTYPE_ = "";
   6   wire D_;
   7   generate if (_TECHMAP_CELLTYPE_ == "$_DFF_N_") begin
   8     if (_TECHMAP_WIREINIT_Q_ === 1'b0) begin
   9       $__DFF_N__$abc9_flop _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q), .n1(D_));
  10       $_DFF_N_ ff (.C(C), .D(D_), .Q(Q));
  11     end
  12     else
  13       (* abc9_keep *) $_DFF_N_ _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q));
  14   end
  15   else if (_TECHMAP_CELLTYPE_ == "$_DFF_P_") begin
  16     if (_TECHMAP_WIREINIT_Q_ === 1'b0) begin
  17       $__DFF_P__$abc9_flop _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q), .n1(D_));
  18       $_DFF_P_ ff (.C(C), .D(D_), .Q(Q));
  19     end
  20     else
  21       (* abc9_keep *) $_DFF_P_ _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q));
  22   end
  23   else if (_TECHMAP_CELLTYPE_ != "")
  24     $error("Unrecognised _TECHMAP_CELLTYPE_");
  25   endgenerate
  26 endmodule
  27 `endif