/*名称：P1口控制流水灯的闪烁，使用特殊指令
时间：2019-12-1
名字：zyy*/
#include <reg52.h>
#include <intrins.h>
void main()
{
unsigned int i;
P1=0xfe;
while(1)
{
P1=_crol_(P1,1);
for(i=0; i<3000; i++);
}
}
*** ERROR L104: MULTIPLE PUBLIC DEFINITIONS
SYMBOL: MAIN
MODULE: .\Objects\流水灯2.obj (______2)
*** WARNING L16: UNCALLED SEGMENT, IGNORED FOR OVERLAY PROCESS
SEGMENT: ?PR?MAIN?______2
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