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abc9: add flop boxes to basic $_DFF_P_ and $_DFF_N_ too

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This commit is contained in:
Eddie Hung 2020-04-16 10:24:02 -07:00
parent 7812a2959b
commit 48052ad813
7 changed files with 88 additions and 24 deletions
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21
techlibs/common/abc9_map.v Normal file
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@ -0,0 +1,21 @@
(* techmap_celltype = "$_DFF_N_ $_DFF_P_" *)
module $_DFF_x_(input C, D, output Q);
parameter [0:0] _TECHMAP_WIREINIT_Q_ = 1'bx;
parameter _TECHMAP_CELLTYPE_ = "";
generate if (_TECHMAP_WIREINIT_Q_ === 1'b1)
wire _TECHMAP_FAIL_ = 1;
else if (_TECHMAP_CELLTYPE_ == "$_DFF_N_") begin
wire D_;
$__DFF_N__$abc9_flop #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q), .n1(D_));
$_DFF_N_ ff (.C(C), .D(D_), .Q(Q));
end
else if (_TECHMAP_CELLTYPE_ == "$_DFF_P_") begin
wire D_;
$__DFF_P__$abc9_flop #(.INIT(_TECHMAP_WIREINIT_Q_)) _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q), .n1(D_));
$_DFF_P_ ff (.C(C), .D(D_), .Q(Q));
end
else if (_TECHMAP_CELLTYPE_ != "")
$error("Unrecognised _TECHMAP_CELLTYPE_");
endgenerate
wire _TECHMAP_REMOVEINIT_Q_ = 1;
endmodule