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Add fast arbiter module (masked round-robin) - #295
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awalsemann
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Oct 28, 2026
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Minor changes could be implemented, but it should work as is.
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This MR adds a masked round-robin arbiter that is a (mostly) drop-in replacement for
rrp_arbiter. It uses a mask to identify relevant input streams that are then dealt with in a round-robin fashion.It offers priority mode for selected input channels (which differs from
rrp_arbiterby also requiring data on that stream, not reserving the output for data). To achieve the same functionality, the prioritization has to dealt with upstream.The masking makes this significantly faster by reducing the amount of logic levels and utilizing carry instances.