No need to apologise :) The pipelines are distinct, but the set of ops that any particular pipeline supports is arbitrary (as in picked by the HW guys who have

No need to apologise :) The pipelines are distinct, but the set of ops that any particular pipeline supports is arbitrary (as in picked by the HW guys who have to fit the FUs in) and the belt is shared. The belt is where the two sides join. We tend to get good entropy putting the flow on one side and exec on the other, and that's nice for humans to model too, but there is no technical requirement. The thing about the Mill is its easily customisable. If you have some new FU (lets say you want a particular op that assists in say encrpytion) you can choose where you put it, and how many pipelines you put it in etc.