diff --git a/brouter-codec/src/main/java/btools/codec/MicroCache2.java b/brouter-codec/src/main/java/btools/codec/MicroCache2.java
index 85a9b67..fae63f3 100644
--- a/brouter-codec/src/main/java/btools/codec/MicroCache2.java
+++ b/brouter-codec/src/main/java/btools/codec/MicroCache2.java
@@ -60,7 +60,7 @@ public final class MicroCache2 extends MicroCache
     int[] alon =  size > dataBuffers.alon.length ? new int[size] : dataBuffers.alon;
     int[] alat =  size > dataBuffers.alat.length ? new int[size] : dataBuffers.alat;
 
-    if ( debug ) System.out.println( "*** decoding cache of size=" + size );
+    if ( debug ) System.out.println( "*** decoding cache of size=" + size + " for lonIdx=" + lonIdx + " latIdx=" + latIdx );
 
     bc.decodeSortedArray( faid, 0, size, 0x20000000, 0 );
     
@@ -124,7 +124,7 @@ public final class MicroCache2 extends MicroCache
       writeVarBytes( nodeTags == null ? null : nodeTags.data );
 
       int links = bc.decodeNoisyNumber( 1 );
-      if ( debug ) System.out.println( "*** decoding node with links=" + links );
+      if ( debug ) System.out.println( "***   decoding node " + ilon + "/" + ilat + " with links=" + links );
       for( int li=0; li<links; li++ )
       {
         int sizeoffset = 0;
@@ -145,6 +145,8 @@ public final class MicroCache2 extends MicroCache
           dlon_remaining = extLonDiff.decodeSignedValue();
           dlat_remaining = extLatDiff.decodeSignedValue();
         }
+        if ( debug ) System.out.println( "***     decoding link to " + (ilon+dlon_remaining) + "/" + (ilat+dlat_remaining) + " extern=" + (nodeIdx == n) );
+
         TagValueWrapper wayTags = wayTagCoder.decodeTagValueSet();
 
         if ( wayTags != null )
@@ -173,7 +175,7 @@ public final class MicroCache2 extends MicroCache
           int ilattarget = ilat + dlat_remaining;
           
           int transcount = bc.decodeVarBits();
-          if ( debug ) System.out.println( "*** decoding geometry with count=" + transcount );
+          if ( debug ) System.out.println( "***       decoding geometry with count=" + transcount );
           int count = transcount+1;
           for( int i=0; i<transcount; i++ )
           {
diff --git a/brouter-mapaccess/src/main/java/btools/mapaccess/PhysicalFile.java b/brouter-mapaccess/src/main/java/btools/mapaccess/PhysicalFile.java
index 6102449..8856f6c 100644
--- a/brouter-mapaccess/src/main/java/btools/mapaccess/PhysicalFile.java
+++ b/brouter-mapaccess/src/main/java/btools/mapaccess/PhysicalFile.java
@@ -10,6 +10,7 @@ import java.io.IOException;
 import java.io.RandomAccessFile;
 
 import btools.codec.DataBuffers;
+import btools.codec.MicroCache;
 import btools.util.ByteDataReader;
 import btools.util.Crc32;
 
@@ -26,6 +27,20 @@ final public class PhysicalFile
   
   public int divisor = 80;
 
+  public static void main( String[] args )
+  {
+    MicroCache.debug = true;
+
+    String message = checkFileIntegrity( new File( args[0] ) );
+
+    if ( message != null )
+    {
+      System.out.println( "************************************" );
+      System.out.println( message );
+      System.out.println( "************************************" );
+    }
+  }
+
   /**
    * Checks the integrity of the file using the build-in checksums
    *
@@ -47,7 +62,7 @@ final public class PhysicalFile
           if ( osmf.hasData() )
             for ( int lonIdx = 0; lonIdx < div; lonIdx++ )
               for ( int latIdx = 0; latIdx < div; latIdx++ )
-                osmf.createMicroCache( lonDegree * div + lonIdx, latDegree * div + latIdx, dataBuffers, null, null, false );
+                osmf.createMicroCache( lonDegree * div + lonIdx, latDegree * div + latIdx, dataBuffers, null, null, MicroCache.debug );
         }
       }
     }