论文部分内容阅读
本文提出的一组状态简化图是用以实现IEC—625总线控制器软件接口。它包括了控制器作为系统中唯一控者所需要的主要接口功能(AHI、SHI、T_4、L_2、C_1、C_2、C_3、C_4、C_(26))的状态简化图。它不仅减少了原状态图中的状态数目,而且也简化了原状态图中较为复杂(由硬件产生)的状态变迁条件,从而使这些接口功能易于用软件实现。它是实现IEC—625总线控制器软件接口的一个依据。
A set of state simplified diagrams presented in this paper is used to implement the IEC625 bus controller software interface. It includes a simplified state diagram of the major interface functions (AHI, SHI, T_4, L_2, C_1, C_2, C_3, C_4, C_ (26)) required by the controller as the sole controller in the system. Not only does it reduce the number of states in the original state diagram, it also simplifies the more complex (hardware-generated) state transitions in the original state diagram, making these interface functions easy to implement in software. It is a basis for implementing the IEC-625 bus controller software interface.