经过修改的u2440mon的源代码,可以下再到norflash和nandflash中,支持没有norflash的开发,以验证通过,注意晶振是12m的-u2440mon modified the source code, They may then norflash and nandflash, norflash not support the development, to test passed, the attention of Crystal Oscillator is 12 m