And it never ends. Fix broken support for 2K ROMs.

src/common/Version.hxx

@@ -19,6 +19,6 @@
 #define VERSION_HXX
 
 #define STELLA_VERSION "6.2"
-#define STELLA_BUILD "6000"
+#define STELLA_BUILD "6001"
 
 #endif

src/emucore/CartEnhanced.cxx

@@ -87,6 +87,8 @@ CartridgeEnhanced::CartridgeEnhanced(const ByteBuffer& image, size_t size,
   else
   {
     mySize = size;
+    if(mySize < 4_KB)
+      myBankShift = 11;
 
     // Allocate array for the ROM image
     myImage = make_unique<uInt8[]>(mySize);