lib/DelayLine: add a bit more documentation
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@ -77,6 +77,11 @@ module mkDelayLine(Integer delay_cycles, DelayLine#(a) ifc)
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delay = cons(r, delay);
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end
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// pump_line ingests a new value into the first register in the
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// line, and shifts older values one register down. The
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// registers always shift forward even when nobody's writing, in
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// which case that slot in the pipeline is occupied by an empty
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// Maybe.
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(* no_implicit_conditions, fire_when_enabled *)
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rule pump_line;
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delay[0] <= inputVal.wget();
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