龙丘开发板部分源代码，整个程序中几乎包含了MC9S12DG128单片机所有部件的初始化及应用程序，是学习该单片机的很好的示例程序-Liuzhou Hill development board part of the source code, the whole process almost single-chip contains all the components MC9S12DG128 initialization and app