Understanding Boundary Scan test with Trainer 1149

In this paper, we describe a training environment based on multi-functional software system called “Trainer 1149”. It provides simulation and demonstration functionality for learning, research, and development related to IEEE 1149.1 Boundary Scan (BS) standard. The software supports both the analytic and synthetic learning process. Trainer 1149 is the main component of a recent goJTAG initiative that aims at creating of an open-source platform for learning and working with BS. Trainer 1149 provides a cozy graphical design and simulation environment of BS-enabled chips and non-BS clusters. It is also possible to simulate the behaviour of various interconnect faults and inspect them using interactive tools. Using a convenient low-cost USB-JTAG cable, one can test real defects in real hardware. The system is implemented using multi-platform Java environment and distributed as an open-source freeware. Such combination of features is unique for public domain BS software.