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