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| author | Eddie Hung <eddie@fpgeh.com> | 2019-10-04 16:58:55 -0700 |
|---|---|---|
| committer | Eddie Hung <eddie@fpgeh.com> | 2019-10-04 16:58:55 -0700 |
| commit | 7a45cd58566310f623bd567a393beb8a734ebf60 (patch) | |
| tree | 3f97ec0e46c9f01db76e3f239140ce828b14b453 /techlibs/ice40/abc9_model.v | |
| parent | 549d6ea467bddba24cc0ee43597b5ab62eb476e7 (diff) | |
| parent | aae2b9fd9c8dc915fadacc24962436dd7aedff36 (diff) | |
| download | yosys-7a45cd58566310f623bd567a393beb8a734ebf60.tar.gz yosys-7a45cd58566310f623bd567a393beb8a734ebf60.tar.bz2 yosys-7a45cd58566310f623bd567a393beb8a734ebf60.zip | |
Merge remote-tracking branch 'origin/eddie/abc_to_abc9' into xaig_dff
Diffstat (limited to 'techlibs/ice40/abc9_model.v')
| -rw-r--r-- | techlibs/ice40/abc9_model.v | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/techlibs/ice40/abc9_model.v b/techlibs/ice40/abc9_model.v new file mode 100644 index 000000000..26cf6cc22 --- /dev/null +++ b/techlibs/ice40/abc9_model.v @@ -0,0 +1,27 @@ +(* abc9_box_id = 1, lib_whitebox *) +module \$__ICE40_CARRY_WRAPPER ( + (* abc9_carry *) + output CO, + output O, + input A, B, + (* abc9_carry *) + input CI, + input I0, I3 +); + parameter LUT = 0; + SB_CARRY carry ( + .I0(A), + .I1(B), + .CI(CI), + .CO(CO) + ); + SB_LUT4 #( + .LUT_INIT(LUT) + ) adder ( + .I0(I0), + .I1(A), + .I2(B), + .I3(I3), + .O(O) + ); +endmodule |