Hello ALL! It would be very nice to get an answer... on the link http://www.keil.com/support/docs/1134.htm for the large memory model is stated: NCODE (0X100000-0X10FFFF), .......... FCODE (0X0-0XDFFF, 0X100000-0X10FFFF), ...) My question is: has it any sense to define NCODE for the large memory model and if yes, please give me some info how it works. THANK YOU VERY MUCH! With best regards, S.