Hi Bert,

If you haven't already gotten one, you'll need to create a header file specifically for that chip that defines all the new SFRs and bits that you need/want to access. For example,

sfr EECON = 0xD2;
#define EEE 0x02
#define EEE_reset 0xFD
#define EEBUSY 0x01

Then create a pointer to xdata (this is how IAR's compiler works for me, Keil might be different):

char *eeprom;
eeprom = (char xdata *)<address>;

Then follow the spec:

EECON |= EEE; // set EE enable
*eeprom = <write byte>; // write a byte
EECON &= EEE_reset; // reset enable

The compiler when it generates xdata accesses handles all the load DPTR and MOVX stuff.

Good luck,

Dennis