Abstract
A soft-core processor build using a Field-Programmable Gate Array (FPGA)’s general-purpose logic represents an embedded processor commonly used for implementation. In a large number of applications; soft-core processors play a vital role due to their ease of usage. Soft-core processors are more advantageous than their hard-core counterparts due to their reduced cost, flexibility, platform independence and greater immunity to obsolescence. This paper presents a survey of a considerable number of soft core processors available from the open-source communities. Some real world applications of these soft-core processors are also discussed followed by the comparison of their several features and characteristics. The increasing popularity of these soft-core processors will inevitably lead to more widespread usage in embedded system design. This is due to the number of significant advantages that soft-core processors hold over their hard-core counterparts.
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