Hi. I was wondering what the various (and especially most simple) approaches one could take for working with (simulating or calculating) sequential logic in Haskell. By sequential logic, I mean like wikipedia describes, where a system is made up of logic gates, whose output is dependent not only on the logic operation of the gate, but on the previous state of the gate. (Like in electronics where the system can be driven by a clock signal or have memory.)
Does one have to get into FRP for that sort of thing? Or use some kind of FSM framework? Or is there some kind of fancy state monad suitable for that? Or...? I'm no electronic or digital engineer, but for learning purposes I've been trying to see if I could build an (extremely simple) virtual processor or calculator in Haskell, using only the Bool type and a few of the boolean operators (and functions composed of the aforementioned), reproducing things like half adders and full adders as functions in the program. Of course, I quickly ran into the stateful aspect of the problem, in subjects like clock signal and flip flops. -- frigidcode.com
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