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-rw-r--r--techlibs/ice40/cells_sim.v1
1 files changed, 1 insertions, 0 deletions
diff --git a/techlibs/ice40/cells_sim.v b/techlibs/ice40/cells_sim.v
index 116188acb..f4cc342eb 100644
--- a/techlibs/ice40/cells_sim.v
+++ b/techlibs/ice40/cells_sim.v
@@ -1445,6 +1445,7 @@ module SB_MAC16 (
input ADDSUBTOP, ADDSUBBOT,
input OHOLDTOP, OHOLDBOT,
input CI, ACCUMCI, SIGNEXTIN,
+ `ABC_ARRIVAL_U(1984) // https://github.com/cliffordwolf/icestorm/blob/95949315364f8d9b0c693386aefadf44b28e2cf6/icefuzz/timings_up5k.txt#L587
output [31:0] O,
output CO, ACCUMCO, SIGNEXTOUT
);