DBYTE

The DBYTE macro accesses individual bytes in the data/idata memory class.

The DBYTE macro is defined as:

#define DBYTE ((unsigned char volatile data  *)0)  /* DATA/IDATA memory */

You may use this macro in your programs as follows:

#include <absacc.h>       /* include absolute memory access macros      */
   :
   :
DBYTE[0x50] = 5;          /* write 0x05 to DATA/IDATA memory at 00050H   */

#define IO DBYTE[0x70]    /* define IO as address 0x70 in near memory */
if (IO) IO = 0;           /* test address 0070H and assign a value    */