Hi, I am using P89V51RD2 micro controller for my application.I am using kiel software for writing programs.after building my code it is showing as fallows, Program Size: data=12.2 xdata=626 code=44295 creating hex file from "SGW"... "SGW" - 0 Error(s), 6 Warning(s). Please clarify the following 1.I want to know what does data=12.2 , xdata=626, code=44295 signifies? 2.In general which part of program comes under data RAM ? and which comes under code flash(In the data sheet it is mentioned that 64KB on-chip code flash and 1KB data RAM ) With Regards, Bhaskar Reddy abreddy1990@yahoo.com