#include
#include
#define uchar unsigned
uchar time;
void t0isr() interrupt 1
{
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
time++;
if(time>=10)
{
P0=_crol_(P0,1);
time=0;
}
}
main()
{
TMOD=0x01;
TH0=(65536-50000)/256;
TL0=(65536-50000)%256;
TR0=1;
ET0=1;
EA=1;
P0=0xfe;
while(1);
}
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