newbie question: synchronous versus combinational bus mux using case statement

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make LED a reg in 2nd code.

A reg is not automatically a register, it is just a data type. A wire can only be used in an assign statement. reg types can be used in procedural code.

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Hi, thanks for the reply.

So, it sounds like you are suggesting that a reg type can be used to generate combinational logic... say by using it outside of an always @ (posedge) block. I hadn't thought of this, but I'll give it a try and see if it works.

-J