remove some error prints

sim/gate.lua

@@ -18,13 +18,13 @@ function Gate.addport(gate, port)
 	Port.setgate(port, gate)
 end
 
+-- Logic Critical
 function Gate.getportstate(gate, index)
 	return gate.port_nets[index].state
 end
 
+-- Logic Critical
 function Gate.setportstate(gate, index, state)
-	if type(state)~="number" then error("invalid state type - must be number (gate "..gate.objref..")") end
-	
 	local port = gate.ports[index]
 	if state ~= port.state then
 		local group = port.group