diff --git a/Changes b/Changes
index 8fc0b4852..48cabf6b9 100644
--- a/Changes
+++ b/Changes
@@ -19,6 +19,8 @@ indicates the contributor was also the author of the fix; Thanks!
 
 ***   Add PINMISSING and PINNOCONNECT lint checks.
 
+***   Add --converge-limit option.  [Holger Waechtler]
+
 ***   Fix generate operators not short circuiting, bug413.  [by Jeremy Bennett]
 
 ***   Fix parameters not supported in constant functions, bug474. [Alex Solomatnikov]
diff --git a/bin/verilator b/bin/verilator
index a0e1e9ecd..7fa2cd6b4 100755
--- a/bin/verilator
+++ b/bin/verilator
@@ -250,6 +250,7 @@ descriptions in the next sections for more information.
     --cc                        Create C++ output
     --cdc                       Clock domain crossing analysis
     --compiler <compiler-name>  Tune for specified C++ compiler
+    --converge-limit <loops>    Tune convergence settle time
     --coverage                  Enable all coverage
     --coverage-line             Enable line coverage
     --coverage-toggle           Enable toggle coverage
@@ -427,6 +428,11 @@ functions to avoid error C1061.
 
 =back
 
+=item --converge-limit <loops>
+
+Rarely needed.  Specifies the maximum number of runtime iterations before
+creating a model failed to converge error.  Defaults to 100.
+
 =item --coverage
 
 Enables all forms of coverage, alias for "--coverage-line --coverage-toggle
diff --git a/src/V3EmitC.cpp b/src/V3EmitC.cpp
index 735abd8c1..b5797e24b 100644
--- a/src/V3EmitC.cpp
+++ b/src/V3EmitC.cpp
@@ -1556,7 +1556,8 @@ void EmitCImp::emitWrapEval(AstNodeModule* modp) {
     puts(    "_eval(vlSymsp);\n");
 #ifndef NEW_ORDERING
     puts(    "__Vchange = _change_request(vlSymsp);\n");
-    puts(    "if (++__VclockLoop > 100) vl_fatal(__FILE__,__LINE__,__FILE__,\"Verilated model didn't converge\");\n");
+    puts(    "if (++__VclockLoop > "+cvtToStr(v3Global.opt.convergeLimit())
+	     +") vl_fatal(__FILE__,__LINE__,__FILE__,\"Verilated model didn't converge\");\n");
     puts("}\n");
 #endif
     puts("}\n");
@@ -1575,7 +1576,8 @@ void EmitCImp::emitWrapEval(AstNodeModule* modp) {
     puts(        "_eval(vlSymsp);\n");
 #ifndef NEW_ORDERING
     puts(	 "__Vchange = _change_request(vlSymsp);\n");
-    puts(        "if (++__VclockLoop > 100) vl_fatal(__FILE__,__LINE__,__FILE__,\"Verilated model didn't DC converge\");\n");
+    puts(        "if (++__VclockLoop > "+cvtToStr(v3Global.opt.convergeLimit())
+		 +") vl_fatal(__FILE__,__LINE__,__FILE__,\"Verilated model didn't DC converge\");\n");
     puts(    "}\n");
 #endif
     puts("}\n");
diff --git a/src/V3Options.cpp b/src/V3Options.cpp
index 1a8e58138..073514618 100644
--- a/src/V3Options.cpp
+++ b/src/V3Options.cpp
@@ -782,6 +782,10 @@ void V3Options::parseOptsList(FileLine* fl, const string& optdir, int argc, char
 		shift;
 		addCFlags(argv[i]);
 	    }
+	    else if ( !strcmp (sw, "-converge-limit") && (i+1)<argc ) {
+		shift;
+		m_convergeLimit = atoi(argv[i]);
+	    }
 	    else if ( !strncmp (sw, "-D", 2)) {
 		addDefine (string (sw+strlen("-D")));
 	    }
@@ -1187,6 +1191,7 @@ V3Options::V3Options() {
     m_underlineZero = false;
     m_xmlOnly = false;
 
+    m_convergeLimit = 100;
     m_dumpTree = 0;
     m_errorLimit = 50;
     m_ifDepth = 0;
diff --git a/src/V3Options.h b/src/V3Options.h
index 0d28d4fdb..cc84467af 100644
--- a/src/V3Options.h
+++ b/src/V3Options.h
@@ -125,6 +125,7 @@ class V3Options {
     bool	m_underlineZero;// main switch: --underline-zero; undocumented old Verilator 2
     bool	m_xmlOnly;	// main switch: --xml-netlist
 
+    int		m_convergeLimit;// main switch: --converge-limit
     int		m_dumpTree;	// main switch: --dump-tree
     int		m_errorLimit;	// main switch: --error-limit
     int		m_ifDepth;	// main switch: --if-depth
@@ -252,6 +253,7 @@ class V3Options {
     bool inhibitSim() const { return m_inhibitSim; }
     bool xmlOnly() const { return m_xmlOnly; }
 
+    int	   convergeLimit() const { return m_convergeLimit; }
     int    dumpTree() const { return m_dumpTree; }
     int	   errorLimit() const { return m_errorLimit; }
     int	   ifDepth() const { return m_ifDepth; }