This article discusses a method of extending EXE file and COM file based on the analy-sis of loading the DOS executive file, simultaneously shows a template of extending the exec-utive file and gives full detail of the extending process.

• 本文在分析DOS加载其可执行文件的基础上,讨论了一种扩充COM文件和EXE文件的方法,详叙了扩充过程的细节,并为扩充DOS的可执行文件提供一个样板。