XFS3.0扩展版

This CWA is revision 3.0 of the XFS interface specification. The move from an XFS 2.0 specification (CWA 13449) to a 3.0 specification has been prompted by a series of factors. Initially, there has been a technical imperative to extend the scope of the existing specification of the XFS Manager to include new devices, such as the Card Embossing Unit. Similarly, there has also been pressure, through implementation experience and the advance of the Microsoft technology, to extend the functionality and capabilities of the existing devices covered by the specification. Finally, it is also clear that our customers and the market are asking for an update to a specification, which is now over 2 years old. Increasing market acceptance and the need to meet this demand is driving the Workshop towards this releas

wosa 的SP构成及用例

sp一般都是用dll实现，sp函数实现主要实现就是上面流程，具体是根据文档细化。文档中特别说了sp底层设备程序开发必须采用异步。即函数调用时直接给应用返回成功，具体的设备操作通过线程控制，至于设备执行是否成功，是通过postmessage事件通知应用的。

wosa 的C#实践

WOSA（全称是Windows开放式系统体系结构 Windows Open System Architecture），是微软公司提出的一种在Windows操作系统下的软件架构 WOSA/XFS是基于WOSA的扩展金融服务（Windows Open System Architecture/ Extensions for Financial Services），是微软公司为全球金融行业软件提出的一种软件架构，它在WOSA软件架构的基础上针对全球金融行业进行了一些相应的修改。