hi,all friends im new here im start my assembly im working on nasm and advance full screeen debug that recommend in my uni, the assembler is working ok but my dos prompt not access the debugger when i give it command like this afd ex02.com then the following error is occur 'afd' is not recognized as an internal or external command, operable program or batch file. plz any one can understand my problem then help me or guide me where i write my commmand in dos prompt or nasm dos prompt im in fix, thanks in advance and waiting for reply regards, sherry