一种基于虚拟仪器的军用计算机总线仿真技术

Bus Simulation Technology for Military Computer Based on Common VI

针对ISA、EISA、multibus等计算机数字总线设备测试诊断需求,论文采用通用型数字IO虚拟仪器,提出一种基于通用IO虚拟仪器的复杂数字总线仿真方法,分析数字IO总线仿真技术要求,开展数字IO模块工作流程、信号激励方式设计。以复杂的计算机ISA总线为验证目标,针对视频图形板,采用自动化测试向量生成器,进行IO空间与存储器空间读写操作,实现板载寄存器读写、内存读写等操作。验证结果表明,基于通用IO虚拟仪器的复杂数字总线仿真方法可以模拟仿真ISA、EISA、I2C、multibus等数字总线操作,对总线测试诊断、局部总线通信等设计具有参考价值。

In order to test complex digital bus equipment,the paper proposes automation test system for digital bus equipment based on the common IO module,analyzes the technical requirement,designs the working procedure and signal stimulus method.Aimed at ISA computer bus simulation,the video graph card is tested,the auto-generator of stimulus data is used,the memory space reading and writing operation are realized.The result verifies that a current method using common IO module is effective to simulate the bus operation of ISA,EISA,I2C etc.The strategy can be applied to digital test diagnosis and local bus communication.