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-rw-r--r--techlibs/greenpak4/synth_greenpak4.cc5
1 files changed, 3 insertions, 2 deletions
diff --git a/techlibs/greenpak4/synth_greenpak4.cc b/techlibs/greenpak4/synth_greenpak4.cc
index 17b5d4782..a9f7db679 100644
--- a/techlibs/greenpak4/synth_greenpak4.cc
+++ b/techlibs/greenpak4/synth_greenpak4.cc
@@ -1,7 +1,7 @@
/*
* yosys -- Yosys Open SYnthesis Suite
*
- * Copyright (C) 2012 Clifford Wolf <clifford@clifford.at>
+ * Copyright (C) 2012 Claire Xenia Wolf <claire@yosyshq.com>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
@@ -162,7 +162,7 @@ struct SynthGreenPAK4Pass : public ScriptPass
run("opt -undriven -fine");
run("techmap -map +/techmap.v -map +/greenpak4/cells_latch.v");
run("dfflibmap -prepare -liberty +/greenpak4/gp_dff.lib");
- run("opt -fast");
+ run("opt -fast -noclkinv -noff");
if (retime || help_mode)
run("abc -dff -D 1", "(only if -retime)");
}
@@ -196,6 +196,7 @@ struct SynthGreenPAK4Pass : public ScriptPass
run("hierarchy -check");
run("stat");
run("check -noinit");
+ run("blackbox =A:whitebox");
}
if (check_label("json"))