Roberto,
You can use a pointer (constant or variable) to EEPROM or SRAM locations. The following examples are for the IAR compiler:

1) Constant pointer option:

#define EEPROM ((xdata uchar *) 0x018000)

*(EEPROM + 100)= 42;

This option is faster but EEPROM cannot be changed (the pointer itself).
EEPROM++; /* not permitted */


2) Variable pointer option:

xdata uchar *eeprom= (xdata uchar *) 0x018000;

*(eeprom+100)= 42;

with this option you can change the pointer itself, for example:

eeprom++; /* is valid */


Regards,

Alfredo del Río.