再试试：
#include
#define uchar unsigned char
#define uint unsigned int
void main()
{
PCON = 0;
SCON = 0x50; //串口方式1, 8-n-1, 允许接收.
TMOD = 0x20;
TH1 = 0xfd;
TL1 = 0xfd;
TR1 = 1;
ES = 1;
EA = 1;
while(1);
}
void servise() interrupt 4
{
RI = 0;
P2 = SBUF;
}
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