Many specifications are involved with PCI bus and interface explanation is complicated, so it s difficult to develop the stable PCI bus equipment of high performance.

A test and maintenance platform using a general circuit board tester was designed for testing special BUS using circuit modules.

In the process of special bus design for a peripheral to ARM9 processor,the system is broken down because of bus-competing,and the physical address can not be directly accessed by the programs in Windows CE.

The important technologies, bus-sharing technology and memory-mapped files technology, were also adopted in order to acquire, monitor and store data simultaneously at high speed.