5/18/2023 0 Comments Path finder algorithm![]() We also describe extensions to these algorithms for mapping asynchronous circuits to Montage, the first FPGA architecture to completely support asynchronous and synchronous interface applications.įPGA CAD tool parameters controlling synthesis optimizations, place and route effort, mapping criteria along with user-supplied physical constraints can affect timing results of the circuit by as much as 70% without any change in original source code. These tools include a simulated-annealing placement algorithm that handles the routability issues of fine-grained FPGAs, and an architecture-adaptive routing algorithm that can easily be retargeted to other FPGAs. In this paper we describe automatic mapping tools for Triptych, an FPGA architecture with improved logic density and performance over commercial FPGAs. Unfortunately, many of the tools necessary require different techniques than traditional circuit implementation options, and these techniques are often developed specifically for only a single FPGA architecture. One of the most important keys to using FPGAs effectively is a complete, automated software system for mapping onto the FPGA architecture. Finally, we demonstrate VTR is run-time and memory footprint efficient, while producing circuit implementations of reasonable quality compared to highly-tuned architecture-specific industrial tools – showing that architecture generality, good implementation quality and run-time efficiency are not mutually exclusive goals.įield-programmable gate arrays (FPGAs) are becoming an increasingly important implementation medium for digital logic. VTR 8 significantly improves optimization quality (reductions of 15% minimum routable channel width, 41% wirelength, and 12% critical path delay), run-time (5.3× faster) and memory footprint (3.3× lower). It is therefore important, for both CAD algorithm comparisons and the validity of architectural conclusions, that VTR produce high-quality circuit implementations. ![]() The VTR design flow also serves as a baseline for evaluating new CAD algorithms. VTR 8 expands the scope of FPGA architectures which can be modelled, allowing VTR to target and model many details of both commercial and proposed FPGA architectures. ![]() This article describes version 8.0 of the open source Verilog To Routing (VTR) project, which provides such a design flow. This is compounded by the difficulty of fairly evaluating FPGA architectural choices, which requires sophisticated high-quality Computer Aided Design (CAD) tools to target each potential architecture. ![]() Developing Field Programmable Gate Array (FPGA) architectures is challenging due to the competing requirements of various application domains, and changing manufacturing process technology. ![]()
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