al davis wrote:
On Thursday 22 February 2007 18:47, Peter Clifton wrote:
Interactive gnucap schematic front-end and probing toolkit
anyone? Make it "friendly" like PSpice to allow the mass
PSpice user migration to quality free tools.
Gnucap now supports plugins in the development snapshot. The
others should too. Then features can be contributed by many
without making a mess out of the core. For now, there are some
growing pains, but I see tremendous power with the system.
Gschem needs three things to make this happen.
1. The ability to have a user defined menu, that can pass
messages to another program.
This sort of exists now. I got part way into implementing a pcb mode
for gschem which is all contained in a standalone scheme file that you
simply load in your gschemrc. I was able to demonstrate cross probing
where you click on a schematic instance and pcb would respond by
selecting the corresponding layout instance. I'm sure some of that code
has rotted by now though. As part of that work, I created some scheme
functions that let you do things like bring up a message dialog or a
file select dialog.
2. The ability for an external program change attributes by
sending a message, and for these changes to show immediately if
that attribute is visible.
as far as I know, this does not exist.
3. The netlister must work, 100%. You should not need to
explicitly run it separately. How about an "export" in the
file menu, like word processors make pdf?
That can pretty much be implemented now, but someone needs to do it.
But this is for a look-alike transition. Having the simulator
commands/menu separate from the schematic is not a problem.
Something left off of this list which I think is important is that in
the current system, nets don't have names in gschem unless you name them
explicitly. The unnamed nets get assigned names at netlist time by
gnetlist. This makes it a bit of a pain I think to then use the
schematic to drive a waveform viewer. In other words, how can I click
on a net and press "plot it" if the schematic tool doesn't know what
that net is called in the netlist (and hence in the simulator output).
On the side ...
Look at a gschem schematic, and a PSpice schematic, side by
side.
Now look at a Multisim schematic and a gschem schematic, side by
side.
not having pspice or multisim, what would I see?
-Dan
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