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OpenFC: contens of pcie/riffa/
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src-fiffa/:              RIFFA DMA engine core stuff, riffa_hdl/ from
                         RIFFA-2.2.2, modified for Vivado 2018.x and
                         Quartus 18.x

xillybus-compat:         RIFFA -> Xillybus interface adapter
riffa_wrapper_*:         Board independent RIFFA wrapper for Kintex-7 and
                         Arria / Cyclone 10GX from original RIFFA code,
riffa-port-*:            RIFFA wrapper + xillybus_compat with some
                         board dependent stuff