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Modern FPGA system integration tools, such as Qsys and Vivado, seek to help designers easily instantiate and connect IP cores. These tools require the cores to ascribe to a specific interconnect abstraction, which is either a high-level memory-mapped or low-level point-to-point streaming protocol. We present a system-level construction tool that gives the designer more control over the nature of the...
Hardened adder and carry logic is widely used in commercial FPGAs to improve the efficiency of arithmetic functions. There are many design choices and complexities associated with such hardening, including circuit design, FPGA architectural choices, and the CAD flow. There has been very little study, however, on these choices and hence we explore a number of possibilities for hard adder design. We...
There is a dramatic logic density gap between field-programmable gate arrays (FPGAs) and application-specific integrated circuits, and this gap is the main reason FPGAs are not cost-effective in high-volume applications. Modern FPGAs narrow this gap by including “hard” circuits such as memories and multipliers, which are very efficient when they are used. However, if these hard circuits are not used,...
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