飞思卡尔HCS12X系列的使用中断法定时0.5s的PIT模块测试工程，我在codewarrior 5.1上建的工程，运行在芯片MC9S12XDP512的开发板SK-S12XDP512-A上面。-Freescale HCS12X series of use when the 0.5 s interrupt legal PIT module testing project, I in codewarrior 5.1 is built on the project, run on chips MC9S