diff --git a/src/de/inetsoftware/jwebassembly/watparser/WatParser.java b/src/de/inetsoftware/jwebassembly/watparser/WatParser.java
index c483e532..3a508ac8 100644
--- a/src/de/inetsoftware/jwebassembly/watparser/WatParser.java
+++ b/src/de/inetsoftware/jwebassembly/watparser/WatParser.java
@@ -1,5 +1,5 @@
 /*
-   Copyright 2018 -2019 Volker Berlin (i-net software)
+   Copyright 2018 - 2019 Volker Berlin (i-net software)
 
    Licensed under the Apache License, Version 2.0 (the "License");
    you may not use this file except in compliance with the License.
@@ -37,14 +37,13 @@
  */
 public class WatParser extends WasmCodeBuilder {
 
-    public WatParser() {
-    }
-
     /**
      * Parse the given wasm text format and generate a list of WasmInstuctions
      * 
      * @param wat
      *            the text format content of a function
+     * @param lineNumber
+     *            the line number for an error message
      */
     public void parse( String wat, int lineNumber ) {
         try {
@@ -70,14 +69,44 @@ public void parse( String wat, int lineNumber ) {
                     case "i32.add":
                         addNumericInstruction( NumericOperator.add, ValueType.i32, javaCodePos );
                         break;
+                    case "i32.trunc_sat_f32_s":
+                        addConvertInstruction( ValueTypeConvertion.f2i, javaCodePos );
+                        break;
+                    case "i64.extend_i32_s":
+                        addConvertInstruction( ValueTypeConvertion.i2l, javaCodePos );
+                        break;
+                    case "i64.trunc_sat_f64_s":
+                        addConvertInstruction( ValueTypeConvertion.d2l, javaCodePos );
+                        break;
+                    case "f32.convert_i32_s":
+                        addConvertInstruction( ValueTypeConvertion.i2f, javaCodePos );
+                        break;
+                    case "f32.div":
+                        addNumericInstruction( NumericOperator.div, ValueType.f32, javaCodePos );
+                        break;
                     case "f32.max":
                         addNumericInstruction( NumericOperator.max, ValueType.f32, javaCodePos );
                         break;
+                    case "f32.mul":
+                        addNumericInstruction( NumericOperator.mul, ValueType.f32, javaCodePos );
+                        break;
+                    case "f32.sub":
+                        addNumericInstruction( NumericOperator.sub, ValueType.f32, javaCodePos );
+                        break;
+                    case "f64.convert_i64_s":
+                        addConvertInstruction( ValueTypeConvertion.l2d, javaCodePos );
+                        break;
+                    case "f64.div":
+                        addNumericInstruction( NumericOperator.div, ValueType.f64, javaCodePos );
+                        break;
                     case "f64.max":
                         addNumericInstruction( NumericOperator.max, ValueType.f64, javaCodePos );
                         break;
-                    case "i64.extend_i32_s":
-                        addConvertInstruction( ValueTypeConvertion.i2l, javaCodePos );
+                    case "f64.mul":
+                        addNumericInstruction( NumericOperator.mul, ValueType.f64, javaCodePos );
+                        break;
+                    case "f64.sub":
+                        addNumericInstruction( NumericOperator.sub, ValueType.f64, javaCodePos );
                         break;
 //                    case "call":
 //                        addCallInstruction( method, javaCodePos );
diff --git a/test/de/inetsoftware/jwebassembly/module/WatParserTest.java b/test/de/inetsoftware/jwebassembly/module/WatParserTest.java
index 70c9441d..d2c8ed27 100644
--- a/test/de/inetsoftware/jwebassembly/module/WatParserTest.java
+++ b/test/de/inetsoftware/jwebassembly/module/WatParserTest.java
@@ -102,24 +102,74 @@ public void i32_add() throws IOException {
         test( "i32.add" );
     }
 
+    @Test
+    public void i32_const() throws IOException {
+        test( " i32.const -7 " );
+    }
+
+    @Test
+    public void i32_trunc_sat_f32_s() throws IOException {
+        test( "i32.trunc_sat_f32_s" );
+    }
+
+    @Test
+    public void i64_extend_i32_s() throws IOException {
+        test( "i64.extend_i32_s" );
+    }
+
+    @Test
+    public void i64_trunc_sat_f64_s() throws IOException {
+        test( "i64.trunc_sat_f64_s" );
+    }
+
+    @Test
+    public void f32_convert_i32_s() throws IOException {
+        test( "f32.convert_i32_s" );
+    }
+
+    @Test
+    public void f32_div() throws IOException {
+        test( "f32.div" );
+    }
+
     @Test
     public void f32_max() throws IOException {
         test( "f32.max" );
     }
 
+    @Test
+    public void f32_mul() throws IOException {
+        test( "f32.mul" );
+    }
+
+    @Test
+    public void f32_sub() throws IOException {
+        test( "f32.sub" );
+    }
+
+    @Test
+    public void f64_convert_i64_s() throws IOException {
+        test( "f64.convert_i64_s" );
+    }
+
+    @Test
+    public void f64_div() throws IOException {
+        test( "f64.div" );
+    }
+
     @Test
     public void f64_max() throws IOException {
         test( "f64.max" );
     }
 
     @Test
-    public void i32_const() throws IOException {
-        test( " i32.const -7 " );
+    public void f64_mul() throws IOException {
+        test( "f64.mul" );
     }
 
     @Test
-    public void i64_extend_i32_s() throws IOException {
-        test( "i64.extend_i32_s" );
+    public void f64_sub() throws IOException {
+        test( "f64.sub" );
     }
 
     @Test
@@ -131,4 +181,9 @@ public void return_() throws IOException {
     public void errorMissingToken() throws IOException {
         testError( "i32.const", "Missing Token in wasm text format after token: i32.const" );
     }
+
+    @Test
+    public void errorUnknownToken() throws IOException {
+        testError( "foobar", "Unknown WASM token: foobar" );
+    }
 }