This paper presents the implementation of a Linux-based experimental boundary scan environment. Its primary aim is to provide a flexible and completely open platform to people interested in experimenting with IEEE 1149.x and related standards and allow them to develop custom applications requiring boundary scan infrastructure control capabilities. The experimental boundary scan test platform is based on readily available hardware components and on the Linux operating system. An ISA-bus to IEEE 1149.1 test bus PC adapter, supporting various boundary scan chain configurations, and a flexible Linux device driver have been implemented so far. They form the core of the test platform, allowing the development of more complex boundary scan test applications.