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| author | Eddie Hung <eddie@fpgeh.com> | 2020-04-16 12:08:59 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2020-05-14 10:33:56 -0700 |
| commit | 722540dbf942d2b8acbaf7372001c7d982eb2845 (patch) | |
| tree | b852f01139a2a9f8b59ffeddfb8edd33a7272557 /techlibs | |
| parent | 5ad3a8528896a2e2539f2de98194eb0a6cce36c9 (diff) | |
| download | yosys-722540dbf942d2b8acbaf7372001c7d982eb2845.tar.gz yosys-722540dbf942d2b8acbaf7372001c7d982eb2845.tar.bz2 yosys-722540dbf942d2b8acbaf7372001c7d982eb2845.zip | |
abc9: not enough to techmap_fail on (* init=1 *), hide them using $__
Diffstat (limited to 'techlibs')
| -rw-r--r-- | techlibs/common/abc9_map.v | 24 | ||||
| -rw-r--r-- | techlibs/common/abc9_unmap.v | 12 |
2 files changed, 26 insertions, 10 deletions
diff --git a/techlibs/common/abc9_map.v b/techlibs/common/abc9_map.v index b04a5b64f..5f1822485 100644 --- a/techlibs/common/abc9_map.v +++ b/techlibs/common/abc9_map.v @@ -2,20 +2,24 @@ 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_)); - $_DFF_N_ ff (.C(C), .D(D_), .Q(Q)); + wire D_; + generate if (_TECHMAP_CELLTYPE_ == "$_DFF_N_") begin + if (_TECHMAP_WIREINIT_Q_ === 1'b0) begin + $__DFF_N__$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 + $__DFF_N_ _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q));// hide from abc9 using $__ prefix end else if (_TECHMAP_CELLTYPE_ == "$_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)); + if (_TECHMAP_WIREINIT_Q_ === 1'b0) begin + $__DFF_P__$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 + $__DFF_P_ _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q)); // hide from abc9 using $__ prefix end else if (_TECHMAP_CELLTYPE_ != "") $error("Unrecognised _TECHMAP_CELLTYPE_"); endgenerate - wire _TECHMAP_REMOVEINIT_Q_ = 1; endmodule diff --git a/techlibs/common/abc9_unmap.v b/techlibs/common/abc9_unmap.v index 0fd07207d..4dfac0cbb 100644 --- a/techlibs/common/abc9_unmap.v +++ b/techlibs/common/abc9_unmap.v @@ -10,3 +10,15 @@ module $__DFF_x__$abc9_flop (input C, D, Q, (* init = INIT *) output n1); $error("Unrecognised _TECHMAP_CELLTYPE_"); endgenerate endmodule + +(* techmap_celltype = "$__DFF_N_ $__DFF_P_" *) +module $__DFF_N__$abc9_flop(input C, D, output Q); + parameter _TECHMAP_CELLTYPE_ = ""; + generate if (_TECHMAP_CELLTYPE_ == "$__DFF_N_") + $_DFF_N_ _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q)); + else if (_TECHMAP_CELLTYPE_ == "$__DFF_P_") + $_DFF_P_ _TECHMAP_REPLACE_ (.C(C), .D(D), .Q(Q)); + else if (_TECHMAP_CELLTYPE_ != "") + $error("Unrecognised _TECHMAP_CELLTYPE_"); + endgenerate +endmodule |