Index: Common.h
===================================================================
diff -u -rdbc7d6c6b4f59a74282875928cf9ee087f42344d -r544e4f1f603efa3da3f03034179d8cdae1066477
--- Common.h	(.../Common.h)	(revision dbc7d6c6b4f59a74282875928cf9ee087f42344d)
+++ Common.h	(.../Common.h)	(revision 544e4f1f603efa3da3f03034179d8cdae1066477)
@@ -89,6 +89,7 @@
 #define MASK_OFF_LSB                    0xFF00      ///< Bits to mask off the least significant byte of a 2-byte word.
 #define MASK_OFF_MSW                    0x0000FFFF  ///< Bits to mask off the most significant 2-byte word of a 4-byte word.
 #define MASK_OFF_LSW                    0xFFFF0000  ///< Bits to mask off the least signficiant 2-byte word of a 4-byte word.
+#define MASK_OFF_U32_MSB                0x00FFFFFF  ///< Bits to mask off the most significatn 2-byte word of a 4-byte word.
 #define SHIFT_8_BITS_FOR_BYTE_SHIFT     8           ///< # of bits to shift in order to shift a byte.
 #define SHIFT_16_BITS_FOR_WORD_SHIFT    16          ///< # of bits to shift in order to shift 2 bytes.
 #define MASK_OFF_NIBBLE_LSB             0xF0        ///< Bits to mask off the least significant nibble of a byte.