The terminal display control computer unit of some system had a problem that its single CPU unit cannot access the multi-channel UART board (MCUB) directly through the compact PCI bus. To settle it

the paper presents a monitoring software solution

which takes the MCUB as a transparent bridge

exchanges bidirectional data between the CPU unit and the external devices via network packets. By fully applying the characters of the real-time embedded operating system VxWorks

e.g. micro kernel

multi-task

scalable components and message queue

the software tackles such difficulty as listening eight external devices simultaneously

real time and mass data exchange

realizes a mini-sized

highly real-time and well processed monitoring system. Experiment shows that the monitoring software satisfies the requirements of system development.