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-rw-r--r--techlibs/xilinx/synth_xilinx.cc2
1 files changed, 1 insertions, 1 deletions
diff --git a/techlibs/xilinx/synth_xilinx.cc b/techlibs/xilinx/synth_xilinx.cc
index afe4d483b..215a48f95 100644
--- a/techlibs/xilinx/synth_xilinx.cc
+++ b/techlibs/xilinx/synth_xilinx.cc
@@ -110,7 +110,7 @@ struct SynthXilinxPass : public ScriptPass
log(" flatten design before synthesis\n");
log("\n");
log(" -retime\n");
- log(" run 'abc' with -dff option\n");
+ log(" run 'abc' with '-dff -D 1' options\n");
log("\n");
log(" -abc9\n");
log(" use new ABC9 flow (EXPERIMENTAL)\n");