通过对用硬件描述语言VHDL表示的某个专用部件（如中断控制器、差错控制码编码/译码器，此为译码器）的代码分析，构建它的逻辑结构，加深对相关部件设计技术的理解。

试验平台：MaxPlusII

-through the use of VHDL hardware descr iption language said a special components (such as interrupt controllers, error control coding / decoding devices, such as decoder) code analysis, building its logical structure, deepen the relevant parts design technology understanding. Test Platform : MaxPlusII