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ice40_wrapcarry to really preserve attributes via -unwrap option

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This commit is contained in:
Eddie Hung 2019-12-09 11:48:28 -08:00
parent 946d5854c0
commit e05372778a
4 changed files with 61 additions and 39 deletions
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19
techlibs/ice40/cells_map.v
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@ -61,22 +61,3 @@ module \$lut (A, Y);
endgenerate
endmodule
`endif
`ifndef NO_ADDER
module \$__ICE40_CARRY_WRAPPER (output CO, O, input A, B, CI, I0, I3);
parameter LUT = 0;
SB_CARRY _TECHMAP_REPLACE_ (
.I0(A),
.I1(B),
.CI(CI),
.CO(CO)
);
\$lut #(
.WIDTH(4),
.LUT(LUT)
) lut (
.A({I0,A,B,I3}),
.Y(O)
);
endmodule
`endif