A cost-effective approach to boundary-scan implementation is the use of a so-called stand-alone station. JTAG Technologies PSA software, based on our comprehensive Application Executor (AEX) is the ideal run-time package. It contains three log-on levels, each with its own complement of features and capabilities. At the top level, the system developer creates sequences of boundary-scan operations, defines user instructions, and establishes branching steps based on the actual results at each step. On the other hand, AEX's Operator level supports only running a sequence and observing results and instructions. The interface is graphical and intuitive and is quickly learned by all levels of users.