I have three files F1.c , F2.c , F3.a51 I was able to generate F1.obj , F2.obj, F3.obj I'm using DOS prompt or batch file. Now can I generate binary file , I'm not using banking. I used the command >L51 F1.obj, F2.obj, F3.obj but it did not work. Any one know how can I create a binary file. Thanks for help in advance