Re: disallow distributed switch branches

Kevin Cameron wrote:
> You are confusing the issues. The problem is if you have
> 
>    module A ...
>        electrical a,b;
>        analog  V(a,b) <+ 5;
>        analog  V(a,b) <+ 6;
>    endmodule
> 
> Which would work under Marq's proposed rules giving V(a,b) == 11, but if
> you split it into submodules:
> 
>    module A ...
>        electrical a,b;
>        B;
>        C;
>   endmodule
> 
>   module B..
>        analog  V(A.a,A.b) <+ 5;
>   endmodule
>   module C
>        analog  V(A.a,A.b) <+ 6;
>   endmodule
> 
> That fails because the contributions are now considered as being in
> parallel.

Kevin,
    Why are you assuming that OOMR contributions would combine in
parallel? That was not the original intent, nor does it seem to square
with the LRM, which says ...

"From within an analog block, it is possible to use hierarchical name
referencing to access signals on an external branch, but not external
analog variables or parameters. When accessing external branches, a
branch signal (its potential or flow) can be monitored (probed); for
source branches, contributions can be made to the output signal."

While it is not very explicit, it does say that external contributions
are made to the existing branch. There is no mention of creating a new
parallel branch.

-Ken

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