password 

 C51编程：我的程序如下：
我的程序是这样：void time1(void) interrupt 3   /*中断时间约<1毫秒*/
{
        TH1=0xfe;
        TL1=0x0c;
        TR1=0;
        key=0x00;
        dog();       /*喂狗脉冲*/
        an++;
        P2=0xff;
        switch(an)
        {
                case 1:
                     P21=led2;
                     P20=led6;
                     P27=0;
                     if(~P23) key=0x06;
                     if(~P22) key=0x02;
                     break;
                case 2:
                     P21=led3;
                     P20=led7;
                     P26=0;
                     if(~P23) key=0x07;
                     if(~P22) key=0x03;
                     break;
                case 3:
                     P21=led4;
                     P20=led1;
                     P25=0;
                     if(~P23) key=0x08;
                     if(~P22) key=0x04;
                     break;
                case 4:
                     P21=led5;
                     P24=0;
                     if(~P23) key=0x01;
                     if(~P22) key=0x05;
                     break;
                default:
                     an=0;
                     break;
         }   /*end_switch*/
    TR1=1;
}
an,key是字节，led1,led2....led7是位（bit)，P20，P21...P27是 P2口的口线
我编译全通过，问题是：
用switch选折数据时出错，在CPU窗口中看到汇编程序是这样的：
先an+1，an送A，A+#0FEH，JZ 转为1时的代码段，A-1，JZ转为2时的代码段....

是否是在JZ是出错？
在仿真器设置中，关于连接的文件是否会出错？谢谢你！  ^_^

发表时间:2003年1月13日10:01:00