it is a bootloader of c8051f340. open it with keil. after download its HEX file into target board. connet target s UART0 with PC s COM , config COM port as 115200-8-n-1, use Xmode to transmit file. then power on target.

这是QQ连连看源代码，用JAVA编写的，功能还不错啦-This is a QQ Lianliankan source code, using JAVA prepared, functional还不错啦