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-rw-r--r--frontends/aiger/aigerparse.cc1
1 files changed, 1 insertions, 0 deletions
diff --git a/frontends/aiger/aigerparse.cc b/frontends/aiger/aigerparse.cc
index b9c648afd..418fd722c 100644
--- a/frontends/aiger/aigerparse.cc
+++ b/frontends/aiger/aigerparse.cc
@@ -478,6 +478,7 @@ void AigerReader::parse_xaiger()
RTLIL::Cell* cell = module->addCell(stringf("$box%u", oldBoxNum), stringf("$__boxid%u", boxUniqueId));
cell->setPort("\\i", SigSpec(State::S0, boxInputs));
cell->setPort("\\o", SigSpec(State::S0, boxOutputs));
+ cell->attributes["\\abc9_box_seq"] = oldBoxNum;
boxes.emplace_back(cell);
}
}