E 3.2.1 Setting the discipline of analog primitives

So I am just trying to understand how this attribute is used.
The idea behind this is 2 fold.
1. it helps the compiler, so that it doesn't raise warnings when it sees I am 
connecting anything other than electrical to a spice primitive.
2. it internally tells the simulator to treat the instance differently if it 
can (for example if it can handle a resistor with rotational ports).

module test;
   rotational node1, node2;

   (* port_discipline="rotational" *) resistor #(.r(1k)) r1 (node1, node2);
endmodule

So when the compiler processes this, it should see that although we are 
instantiating a spice resistor and passing rotational ports, it shouldn't raise 
any warning/error since we have set the attribute port_discipline="rotational".
Internally the simulator may or may not treat this differently depending 
whether or not it has a specific spice primitive for a resistor with rotational 
ports.

Is this how we use this feature?

Cheers...
Dave

-- 
=====================================
-- David Miller
-- Design Technology (Austin)
-- Freescale Semiconductor
-- Ph : 512 996-7377 Fax: x7755
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