NCOR: An FPGA-Friendly Nonblocking Data Cache for Soft Processors with Runahead Execution

<table>Lookup and Request state machines. Double-lined states are initial states. Lookup waits for Request completion in the “wait” state. All black states generate requests targeted at the Bus controller.</table>

International Journal of Reconfigurable Computing

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Figure 6

Figure 6: NCOR: An FPGA-Friendly Nonblocking Data Cache for Soft Processors with Runahead Execution 