.. _fpga_architecture_description: FPGA Architecture Description ============================= VTR uses an XML-based architecture description language to describe the targeted FPGA architecture. This flexible description language allows the user to describe a large number of hypothetical and commercial-like FPGA architectures. See the :ref:`arch_tutorial` for an introduction to the architecture description language. For a detailed reference on the supported options see the :ref:`arch_reference`. .. toctree:: :maxdepth: 2 reference example_arch