Re: gEDA-user: wxPCB Goals

[Dan McMahill <dan@xxxxxxxxxxxx>]

John Sheahan wrote:
> Dan McMahill wrote:
>
> > Bob Paddock wrote:
> >
> > > * Designator renumbering and back-annotation to gschem files.
>
> on a vaguely related subject - has anyone attempted backannotating spice 
> results - say DC operating point, to gschem?

Not that I know of, but that and also cross probing (click a gschem net 
to plot it, click a gschem element to select the corresponding one in 
pcb) would be super useful.

It seems like you'd want to put an annotation attribute on each pin to 
let a simulator write a voltage to those. And on elements like a MOS 
transistor, have an array of annotation attributes (or maybe just a 
single multi-line one?) where you could write back things like gm, cgs, etc.

The reason I mention cross probing is that that and the backannotation 
are both things where you'd like some other program to communicate with 
a running gschem and have it do something.

Anyone have experience with such communication between processes?

Hopefully if it ever gets implemented we don't open up a security hole 
by listening on some socket.  Not that any commercial tools (*cough* 
cadence) have ever had a DOS vulnerability due to this...

-Dan