diff --git a/src/debugger/gui/CartDebugWidget.hxx b/src/debugger/gui/CartDebugWidget.hxx
index 9b613052b..bbf3e9875 100644
--- a/src/debugger/gui/CartDebugWidget.hxx
+++ b/src/debugger/gui/CartDebugWidget.hxx
@@ -50,7 +50,7 @@ class CartDebugWidget : public Widget, public CommandSender
 
   public:
     int addBaseInformation(int bytes, const string& manufacturer,
-        const string& desc)
+        const string& desc, const uInt16 maxlines = 10)
     {
       const int lwidth = _font.getStringWidth("Manufacturer: "),
                 fwidth = _w - lwidth - 20;
@@ -82,7 +82,7 @@ class CartDebugWidget : public Widget, public CommandSender
       const StringList& sl = bs.stringList();
       uInt32 lines = sl.size();
       if(lines < 3) lines = 3;
-      if(lines > 10) lines = 10;
+      if(lines > maxlines) lines = maxlines;
 
       new StaticTextWidget(_boss, _font, x, y, lwidth,
             myFontHeight, "Description: ", kTextAlignLeft);
diff --git a/src/debugger/gui/CartE7Widget.cxx b/src/debugger/gui/CartE7Widget.cxx
index 79cdc3428..6288011d7 100644
--- a/src/debugger/gui/CartE7Widget.cxx
+++ b/src/debugger/gui/CartE7Widget.cxx
@@ -50,7 +50,7 @@ CartridgeE7Widget::CartridgeE7Widget(
   info << "Bank RORG" << " = $" << HEX4 << start << "\n";
 #endif
   int xpos = 10,
-      ypos = addBaseInformation(size, "M-Network", info.str()) + myLineHeight;
+      ypos = addBaseInformation(size, "M-Network", info.str(), 15) + myLineHeight;
 
   StringMap items0, items1;
   items0.push_back("0 - ROM ($FE0)", "0");
diff --git a/src/debugger/gui/CartF4SCWidget.cxx b/src/debugger/gui/CartF4SCWidget.cxx
index a5a3d447a..65762b76d 100644
--- a/src/debugger/gui/CartF4SCWidget.cxx
+++ b/src/debugger/gui/CartF4SCWidget.cxx
@@ -46,7 +46,7 @@ CartridgeF4SCWidget::CartridgeF4SCWidget(
   }
 
   int xpos = 10,
-      ypos = addBaseInformation(size, "Atari", info.str()) + myLineHeight;
+      ypos = addBaseInformation(size, "Atari", info.str(), 15) + myLineHeight;
 
   StringMap items;
   items.push_back("0 ($FF4)", "0");
diff --git a/src/debugger/gui/CartF4Widget.cxx b/src/debugger/gui/CartF4Widget.cxx
index cb0309fd1..38aabcdd3 100644
--- a/src/debugger/gui/CartF4Widget.cxx
+++ b/src/debugger/gui/CartF4Widget.cxx
@@ -44,7 +44,7 @@ CartridgeF4Widget::CartridgeF4Widget(
   }
 
   int xpos = 10,
-      ypos = addBaseInformation(size, "Atari", info.str()) + myLineHeight;
+      ypos = addBaseInformation(size, "Atari", info.str(), 15) + myLineHeight;
 
   StringMap items;
   items.push_back("0 ($FF4)", "0");
diff --git a/src/debugger/gui/CartFA2Widget.cxx b/src/debugger/gui/CartFA2Widget.cxx
new file mode 100644
index 000000000..55e6e75a6
--- /dev/null
+++ b/src/debugger/gui/CartFA2Widget.cxx
@@ -0,0 +1,92 @@
+//============================================================================
+//
+//   SSSS    tt          lll  lll       
+//  SS  SS   tt           ll   ll        
+//  SS     tttttt  eeee   ll   ll   aaaa 
+//   SSSS    tt   ee  ee  ll   ll      aa
+//      SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
+//  SS  SS   tt   ee      ll   ll  aa  aa
+//   SSSS     ttt  eeeee llll llll  aaaaa
+//
+// Copyright (c) 1995-2013 by Bradford W. Mott, Stephen Anthony
+// and the Stella Team
+//
+// See the file "License.txt" for information on usage and redistribution of
+// this file, and for a DISCLAIMER OF ALL WARRANTIES.
+//
+// $Id$
+//============================================================================
+
+#include "CartFA2.hxx"
+#include "PopUpWidget.hxx"
+#include "CartFA2Widget.hxx"
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+CartridgeFA2Widget::CartridgeFA2Widget(
+      GuiObject* boss, const GUI::Font& font,
+      int x, int y, int w, int h, CartridgeFA2& cart)
+  : CartDebugWidget(boss, font, x, y, w, h),
+    myCart(cart)
+{
+  uInt16 size = cart.mySize;
+
+  ostringstream info;
+  info << "Modified FA RAM+, six or seven 4K banks\n"
+       << "256 bytes RAM @ $F000 - $F1FF\n"
+       << "  $F100 - $F1FF (R), $F000 - $F0FF (W)\n"
+       << "RAM can be loaded/saved to Harmony flash by accessing $FF4 "
+          "(not currently accessible)\n"
+       << "Startup bank = " << cart.myStartBank << "\n";
+
+  // Eventually, we should query this from the debugger/disassembler
+  for(uInt32 i = 0, offset = 0xFFC, spot = 0xFF5; i < cart.bankCount();
+      ++i, offset += 0x1000)
+  {
+    uInt16 start = (cart.myImage[offset+1] << 8) | cart.myImage[offset];
+    start -= start % 0x1000;
+    info << "Bank " << i << " @ $" << HEX4 << start << " - "
+         << "$" << (start + 0xFFF) << " (hotspot = $" << (spot+i) << ")\n";
+  }
+
+  int xpos = 10,
+      ypos = addBaseInformation(size, "Chris D. Walton (Star Castle 2600)",
+                info.str(), 15) + myLineHeight;
+
+  StringMap items;
+  items.push_back("0 ($FF5)", "0");
+  items.push_back("1 ($FF6)", "1");
+  items.push_back("2 ($FF7)", "2");
+  items.push_back("3 ($FF8)", "3");
+  items.push_back("4 ($FF9)", "4");
+  items.push_back("5 ($FFA)", "5");
+  if(cart.bankCount() == 7)
+    items.push_back("6 ($FFB)", "6");
+
+  myBank =
+    new PopUpWidget(boss, font, xpos, ypos-2, font.getStringWidth("0 ($FFx) "),
+                    myLineHeight, items, "Set bank: ",
+                    font.getStringWidth("Set bank: "), kBankChanged);
+  myBank->setTarget(this);
+  addFocusWidget(myBank);
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void CartridgeFA2Widget::loadConfig()
+{
+  myBank->setSelected(myCart.myCurrentBank);
+
+  CartDebugWidget::loadConfig();
+}
+
+// - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
+void CartridgeFA2Widget::handleCommand(CommandSender* sender,
+                                      int cmd, int data, int id)
+{
+  if(cmd == kBankChanged)
+  {
+    myCart.unlockBank();
+    myCart.bank(myBank->getSelected());
+    myCart.lockBank();
+    invalidate();
+  }
+}
diff --git a/src/debugger/gui/CartFA2Widget.hxx b/src/debugger/gui/CartFA2Widget.hxx
new file mode 100644
index 000000000..a6111dfb3
--- /dev/null
+++ b/src/debugger/gui/CartFA2Widget.hxx
@@ -0,0 +1,46 @@
+//============================================================================
+//
+//   SSSS    tt          lll  lll       
+//  SS  SS   tt           ll   ll        
+//  SS     tttttt  eeee   ll   ll   aaaa 
+//   SSSS    tt   ee  ee  ll   ll      aa
+//      SS   tt   eeeeee  ll   ll   aaaaa  --  "An Atari 2600 VCS Emulator"
+//  SS  SS   tt   ee      ll   ll  aa  aa
+//   SSSS     ttt  eeeee llll llll  aaaaa
+//
+// Copyright (c) 1995-2013 by Bradford W. Mott, Stephen Anthony
+// and the Stella Team
+//
+// See the file "License.txt" for information on usage and redistribution of
+// this file, and for a DISCLAIMER OF ALL WARRANTIES.
+//
+// $Id$
+//============================================================================
+
+#ifndef CARTRIDGEFA2_WIDGET_HXX
+#define CARTRIDGEFA2_WIDGET_HXX
+
+class CartridgeFA2;
+class PopUpWidget;
+
+#include "CartDebugWidget.hxx"
+
+class CartridgeFA2Widget : public CartDebugWidget
+{
+  public:
+    CartridgeFA2Widget(GuiObject* boss, const GUI::Font& font,
+                       int x, int y, int w, int h,
+                       CartridgeFA2& cart);
+    virtual ~CartridgeFA2Widget() { }
+
+    void loadConfig();
+    void handleCommand(CommandSender* sender, int cmd, int data, int id);
+
+  private:
+    CartridgeFA2& myCart;
+    PopUpWidget* myBank;
+
+    enum { kBankChanged = 'bkCH' };
+};
+
+#endif
diff --git a/src/debugger/gui/CartMCWidget.cxx b/src/debugger/gui/CartMCWidget.cxx
index 2cee2ff42..1a5b78045 100644
--- a/src/debugger/gui/CartMCWidget.cxx
+++ b/src/debugger/gui/CartMCWidget.cxx
@@ -115,5 +115,24 @@ void CartridgeMCWidget::loadConfig()
 void CartridgeMCWidget::handleCommand(CommandSender* sender,
                                       int cmd, int data, int id)
 {
-  // TODO - implement this
+  myCart.unlockBank();
+
+  switch(cmd)
+  {
+    case kSlice0Changed:
+      myCart.myCurrentBlock[0] = atoi(mySlice0->getSelectedTag().c_str());
+      break;
+    case kSlice1Changed:
+      myCart.myCurrentBlock[1] = atoi(mySlice1->getSelectedTag().c_str());
+      break;
+    case kSlice2Changed:
+      myCart.myCurrentBlock[2] = atoi(mySlice2->getSelectedTag().c_str());
+      break;
+    case kSlice3Changed:
+      myCart.myCurrentBlock[3] = atoi(mySlice3->getSelectedTag().c_str());
+      break;
+  }
+
+  myCart.lockBank();
+  invalidate();
 }
diff --git a/src/debugger/gui/module.mk b/src/debugger/gui/module.mk
index 811b468c7..2999c6697 100644
--- a/src/debugger/gui/module.mk
+++ b/src/debugger/gui/module.mk
@@ -37,6 +37,7 @@ MODULE_OBJS := \
 	src/debugger/gui/CartF6SCWidget.o \
 	src/debugger/gui/CartF8SCWidget.o \
 	src/debugger/gui/CartFAWidget.o \
+	src/debugger/gui/CartFA2Widget.o \
 	src/debugger/gui/CartFEWidget.o \
 	src/debugger/gui/CartMCWidget.o \
 	src/debugger/gui/CartSBWidget.o \
diff --git a/src/emucore/CartFA2.hxx b/src/emucore/CartFA2.hxx
index e4727e894..9d47506f1 100644
--- a/src/emucore/CartFA2.hxx
+++ b/src/emucore/CartFA2.hxx
@@ -24,6 +24,9 @@ class System;
 
 #include "bspf.hxx"
 #include "Cart.hxx"
+#ifdef DEBUGGER_SUPPORT
+  #include "CartFA2Widget.hxx"
+#endif
 
 /**
   This is an extended version of the CBS RAM Plus bankswitching scheme
@@ -33,11 +36,17 @@ class System;
   of RAM can be loaded/saved to Harmony cart flash, which is emulated by
   storing in a file.
 
+  For 29K versions of the scheme, the first 1K is ARM code
+  (implements actual bankswitching on the Harmony cart), which is
+  completely ignored by the emulator.
+
   @author  Chris D. Walton
   @version $Id$
 */
 class CartridgeFA2 : public Cartridge
 {
+  friend class CartridgeFA2Widget;
+
   public:
     /**
       Create a new cartridge using the specified image
@@ -132,6 +141,18 @@ class CartridgeFA2 : public Cartridge
     */
     void setRomName(const string& name);
 
+  #ifdef DEBUGGER_SUPPORT
+    /**
+      Get debugger widget responsible for accessing the inner workings
+      of the cart.
+    */
+    CartDebugWidget* debugWidget(GuiObject* boss,
+        const GUI::Font& font, int x, int y, int w, int h)
+    {
+      return new CartridgeFA2Widget(boss, font, x, y, w, h, *this);
+    }
+  #endif
+
   public:
     /**
       Get the byte at the specified address.