diff --git a/dsu3plugin/dsu3plugin.cpp b/dsu3plugin/dsu3plugin.cpp
--- a/dsu3plugin/dsu3plugin.cpp
+++ b/dsu3plugin/dsu3plugin.cpp
@@ -170,6 +170,18 @@ bool dsu3plugin::cacheEnable()
     return setCacheEnable(true);
 }
 
+bool dsu3plugin::cacheIsEnable()
+{
+    if(parent==NULL)
+        return false;
+    unsigned int DSUBASEADDRESS = SocExplorerEngine::self()->getEnumDeviceBaseAddress(this,0x01 , 0x004,0);
+    if(DSUBASEADDRESS == (unsigned int)-1)
+        DSUBASEADDRESS = 0x90000000;
+    WriteRegs(uIntlist()<<2,DSUBASEADDRESS+0x400024);
+    unsigned int reg = ReadReg(DSUBASEADDRESS+0x700000);
+    return ((reg&0x0F)==0x0F);
+}
+
 bool dsu3plugin::setCacheEnable(bool enabled)
 {
     if(parent==NULL)
@@ -313,13 +325,6 @@ void dsu3plugin::writeSection(const QStr
 }
 
 
-unsigned int dsu3plugin::Write(unsigned int *Value,unsigned int count,unsigned  int address)
-{
-    if(parent!=NULL)
-        return parent->Write(Value,count,address);
-    return 0;
-}
-
 bool dsu3plugin::memSet(unsigned int address,int value, unsigned int count)
 {
     unsigned int* buffer = (unsigned int*)malloc(count*sizeof(unsigned int));
@@ -332,10 +337,3 @@ bool dsu3plugin::memSet(unsigned int add
     }
     return false;
 }
-
-unsigned int dsu3plugin::Read(unsigned int *Value,unsigned int count, unsigned int address)
-{
-    if(parent!=NULL)
-        return parent->Read(Value,count,address);
-    return 0;
-}
diff --git a/dsu3plugin/dsu3plugin.h b/dsu3plugin/dsu3plugin.h
--- a/dsu3plugin/dsu3plugin.h
+++ b/dsu3plugin/dsu3plugin.h
@@ -42,13 +42,12 @@ public:
     ~dsu3plugin();
     bool memSet(unsigned int address, int value, unsigned int count);
 public slots:
-    unsigned int Write(unsigned int *Value,unsigned int count,unsigned  int address=0);
-    unsigned int Read(unsigned int *Value,unsigned int count, unsigned int address=0);
     void openFile();
     void openFile(QString fileName);
     bool configureTarget();
     bool cacheDisable();
     bool cacheEnable();
+    bool cacheIsEnable();
     bool setCacheEnable(bool enabled);
     bool flashTarget();
     void run();
diff --git a/spwplugin/StarDundee/stardundeespw_usb.cpp b/spwplugin/StarDundee/stardundeespw_usb.cpp
--- a/spwplugin/StarDundee/stardundeespw_usb.cpp
+++ b/spwplugin/StarDundee/stardundeespw_usb.cpp
@@ -25,7 +25,7 @@
 #include <socexplorerengine.h>
 #include <qhexedit.h>
 
-QString dwLinkStatusQString[6] = {
+const QString dwLinkStatusQString[6] = {
     "CFG_SPACEWIRE_ERROR_RESET",
     "CFG_SPACEWIRE_ERROR_WAIT",
     "CFG_SPACEWIRE_READY",