Absolute Memory Access Macros

First, you may use the absolute memory access macros provided as part of the C51 library. Use the following macros to directly access the memory areas of the 8051.
CBYTE CWORD DBYTE
DWORD PBYTE PWORD
XBYTE XWORD

These macros are defined in the section entitled “Absolute Memory Access Macros” in the “Library Reference” chapter.