基于Windows 95的CNC系统中串行通信设计

Design of Serial Communication in CVC System Based on Windows 95

针对Ｗｉｎｄｏｗｓ９５下设计的ＣＮＣ系统，就其上、下位机之间的实时串行通信进行了研究．编写运行于Ｗｉｎｄｏｗｓ９５操作系统０级环上的ＣｌｉｅｎｔＶｘＤ，可以绕过Ｗｉｎ３２ＣｏｍｍｕｎｉｃａｔｉｏｎＡＰＩ，直接与Ｗｉｎｄｏｗｓ９５的通信机制核心ＶＣＯＭＭ进行通信。

Based on the deep insight of the communication mechanism under Windows 95, writhing Client VxD is given, which communicates with VCOMM, directly, bypassing the Win32 Communication API. The access rate is improved greatly, and the requirement of real time performance in CVC system is satisfied.