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| author | Eddie Hung <eddie@fpgeh.com> | 2020-01-27 09:54:04 -0800 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2020-01-27 09:54:04 -0800 |
| commit | af8281d2f5e3945a8bb93dd7c7400aafb29af3b8 (patch) | |
| tree | 36afb76914bb8c2e4e03b1002aa696fd9d16768b /techlibs/ice40/abc9_model.v | |
| parent | 07a12ebd4ff12c8016809eacad4551246fa4b316 (diff) | |
| parent | b1787615514f84c83c27d08011427e90c9bd0f4a (diff) | |
| download | yosys-af8281d2f5e3945a8bb93dd7c7400aafb29af3b8.tar.gz yosys-af8281d2f5e3945a8bb93dd7c7400aafb29af3b8.tar.bz2 yosys-af8281d2f5e3945a8bb93dd7c7400aafb29af3b8.zip | |
Merge pull request #1656 from YosysHQ/eddie/ice40_abc9_warnings
ice40: reduce ABC9 internal fanout warnings with a param for CI->I3
Diffstat (limited to 'techlibs/ice40/abc9_model.v')
| -rw-r--r-- | techlibs/ice40/abc9_model.v | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/techlibs/ice40/abc9_model.v b/techlibs/ice40/abc9_model.v index 26cf6cc22..a5e5f4372 100644 --- a/techlibs/ice40/abc9_model.v +++ b/techlibs/ice40/abc9_model.v @@ -9,6 +9,8 @@ module \$__ICE40_CARRY_WRAPPER ( input I0, I3 ); parameter LUT = 0; + parameter I3_IS_CI = 0; + wire I3_OR_CI = I3_IS_CI ? CI : I3; SB_CARRY carry ( .I0(A), .I1(B), @@ -21,7 +23,7 @@ module \$__ICE40_CARRY_WRAPPER ( .I0(I0), .I1(A), .I2(B), - .I3(I3), + .I3(I3_OR_CI), .O(O) ); endmodule |