asm是汇编语言源程序的扩展名。汇编语言的源程序需要编译和连接后才能在计算机上执行，对汇编语言源程序进行汇编时，汇编程序对．ASM文件进行扫描，若源程序中有错，则结束汇编后，指出源程序中的错误。这时，可通过屏幕上提供的信息修改源程序(回到EDIT编辑状态)，再经过汇编，直到得到无错误的目标程序。经过汇编产生的目标程序并不是可执行的程序，必须经过连接才可以执行。-asm is the assembly language source extension. Assembly language source code to compile and connect to the computer after the execution, when the assembly language source code for compilation, assembler right. ASM files are scanned, if the source program is wrong, then after the end of the assembly, pointing out errors in the source program. In this case, by providing information on the screen to modify the source code (back to the EDIT state), and then after the compilation, until you get the error of the target program. After compilation produced by the target program is not executable program, you must connect before you can run through.