VGA控制器源码，代码已经过验证，可以立即使用。-VGA controller source code, the code has already been verified, you can immediately use.

基于NIOS II 的DE1开发板的VGA 控制器VGA控制模块主要控制VGA模块的开始和其运行的状态，需要写一个Avalon 从端口响应CPU的控制信号，继而控制整个模块的运行，-Based on the DE1 of the NIOS II development board VGA controller to control the VGA module VGA main control module and its operat