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-rw-r--r--passes/sat/clk2fflogic.cc7
1 files changed, 7 insertions, 0 deletions
diff --git a/passes/sat/clk2fflogic.cc b/passes/sat/clk2fflogic.cc
index 49ec795d3..4bb4aa047 100644
--- a/passes/sat/clk2fflogic.cc
+++ b/passes/sat/clk2fflogic.cc
@@ -253,6 +253,13 @@ struct Clk2fflogicPass : public Pass {
SigSpec qval = module->Mux(NEW_ID, past_q, past_d, clock_edge);
Const rstval = cell->parameters["\\ARST_VALUE"];
+ Wire *past_arst = module->addWire(NEW_ID);
+ module->addFf(NEW_ID, arst, past_arst);
+ if (cell->parameters["\\ARST_POLARITY"].as_bool())
+ arst = module->LogicOr(NEW_ID, arst, past_arst);
+ else
+ arst = module->LogicAnd(NEW_ID, arst, past_arst);
+
if (cell->parameters["\\ARST_POLARITY"].as_bool())
module->addMux(NEW_ID, qval, rstval, arst, sig_q);
else