从dos下装载内核，运行。AA为工具软件，它在当前目录下读取Image文件，去掉前面的bootsect和setup程序，仅剩下内核 main.c和loader.asm为主程序文件。-under loading kernel operation. AA software as a tool, it in the current directory Image read documents, the front page bootsect and setup procedures, leavin