小弟在github上下载了一个开源项目，但是其中的.brd文件无法打开，提示信息如下this design is corrupted.it may have been copied form a different architecture using ASCII code;copy using b

#include<reg51.h> sbit P30=P3^0; sbit P31=P3^1; #define uchar unsigned char #define uint unsigned int uchar Data; uint num; void delay(uint n)

求教大神，关于FPGA的原理图和封装怎么画啊，DATASHEET里面卡不懂