二个程序，一个是用VHDL语言对SAA7113的初始化，于串口将初始化内容读出，另一个是读取SAA7113寄存器内的值于串口发送出来-Two procedures, one for VHDL language SAA7113 initialization, the contents will be initialized in the serial read out, the other is the value of reading the SAA7113 register send out