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-rw-r--r--kernel/cellaigs.cc2
1 files changed, 2 insertions, 0 deletions
diff --git a/kernel/cellaigs.cc b/kernel/cellaigs.cc
index 26c625f89..fbc6d045e 100644
--- a/kernel/cellaigs.cc
+++ b/kernel/cellaigs.cc
@@ -325,6 +325,8 @@ Aig::Aig(Cell *cell)
int A = mk.inport("\\A", i);
int B = mk.inport("\\B", i);
int Y = mk.mux_gate(A, B, S);
+ if (cell->type == "$_NMUX_")
+ Y = mk.not_gate(Y);
mk.outport(Y, "\\Y", i);
}
goto optimize;