diff options
| author | Eddie Hung <eddie@fpgeh.com> | 2020-04-16 10:24:02 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2020-05-14 10:33:56 -0700 |
| commit | 48052ad813db3561a959a1921466d571bafa354c (patch) | |
| tree | 9029ab8f94665a252449cfa4f0a0440ed0696815 /techlibs/common/abc9_map.v | |
| parent | 7812a2959b9b23b44e8144f9edb139f282d623e1 (diff) | |
| download | yosys-48052ad813db3561a959a1921466d571bafa354c.tar.gz yosys-48052ad813db3561a959a1921466d571bafa354c.tar.bz2 yosys-48052ad813db3561a959a1921466d571bafa354c.zip | |
abc9: add flop boxes to basic $_DFF_P_ and $_DFF_N_ too
Diffstat (limited to 'techlibs/common/abc9_map.v')
| -rw-r--r-- | techlibs/common/abc9_map.v | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/techlibs/common/abc9_map.v b/techlibs/common/abc9_map.v new file mode 100644 index 000000000..b04a5b64f --- /dev/null +++ b/techlibs/common/abc9_map.v @@ -0,0 +1,21 @@ +(* techmap_celltype = "$_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 |