SPICE netlist to schematic?

[Paul Camilleri]

Could not see it on their web site but contact information is present there.

"Rich Webb" <bbew.ar@mapson.nozirev.ten> wrote in message
news:2j5hovcmb45pjjeigdus4it0bhev9ou7jd@4ax.com...

On Sat, 11 Oct 2003 21:39:18 +0000 (UTC), "Paul Camilleri"
paul.camilleri@btconnect.com> wrote:

Try www.quintics.com

Any idea what the price/seat is for Quintics? $40? $400? $4,000?

--
Rich Webb Norfolk, VA

 

"Kevin Aylward" <kevindotaylwardEXTRACT@anasoft.co.uk> wrote in message news:<mS7gb.178$b93.164@newsfep1-gui.server.ntli.net>...

....

Indeed. It has its uses. I bet http://www.concept.de/sv_index.html is an
arm and a leg, assuming it works. I haven't tried it.

I got my company to buy a lisence as we have to work with spice
netlists from 3rd party vendors. The spicevision 2.1 has saved me
loads of work.

First I have to say that it is best on digital. Concept admit that
analog is difficult because you have to recognize structures like
differential amplifiers in many different ways.

Enough said on limitations, you can get an edif for import in cadence,
you can script the program with tcl to extract info like node load and
node connection. I have myself written a tcl snippet extracting the
geometry data of the transistors for processing in excel. I needed
about 30min and a bit of help from concept. (I know tcl so the time
needed was to understand the API for spicevision.

There are standard symbols for elements, but if you don't like the
rectangles for your nand and or nor blocks, you can edit your own set
of symbols that spicevision insert. Nice way to force pin placement.

In a huge spice netlist there are many signals that clutter up the
visual area. spicevision has a cone window where you insert only the
signals that interest you. This flatten the signal flow across module
borders so that it is fairly easy to track a signal from its chip
input to its chip output.

I also used spicevision to load symbols into cadence composer. most of
the work was invested in finding out how cadence place symbols by its
lisplike scripting language. In spicevision the tcl routine was a
breeze and the routine created a lisp file for cadence. As the
structure in spicevision is no good for analog design, I chose to have
all transistors placed on top of each other and then did the post
processing by hand. Most of the work in cadence is assigning w and l
and other stuff to the symbols. That had already been taken care of by
spicevision.

So far I have found that the price and maintenance has been worth its
value.

It doesn't, however, solve the main problem: Topology recognition.
--
Svenn

 

[Kevin Aylward]

svenn.are@bjerkem.de wrote:

"Kevin Aylward" <kevindotaylwardEXTRACT@anasoft.co.uk> wrote in
message news:<mS7gb.178$b93.164@newsfep1-gui.server.ntli.net>...

...


Indeed. It has its uses. I bet http://www.concept.de/sv_index.html
is an arm and a leg, assuming it works. I haven't tried it.

I got my company to buy a lisence as we have to work with spice
netlists from 3rd party vendors. The spicevision 2.1 has saved me
loads of work.

spicevision.

So far I have found that the price and maintenance has been worth its
value.

So... how much *is* it then.

It doesn't, however, solve the main problem: Topology recognition.

Yeah. In principle, it could be done, but the AI in it will have to be
reasonbly extesive.

Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.

 

"Kevin Aylward" <kevindotaylwardEXTRACT@anasoft.co.uk> wrote in message news:<bbujb.68$id2.46@newsfep3-gui.server.ntli.net>...
....

So... how much *is* it then.

You want a customer to disclose a negotiated price? You are a
professional software writer, and should know how the CAD vendors like
that kind of behaviour?

It doesn't, however, solve the main problem: Topology recognition.

Yeah. In principle, it could be done, but the AI in it will have to be
reasonbly extesive.

When you talk to the guys that try to implement these systems, you
know that they are mainly focusing on digital, say extracted spice
netlists from layout of digital design. Which also make sence as
digital is simpler and commercial more interesting. You can also see
this when you open an analog spice netlist in the software:
complementary transistors connected to the same net are mostly in
inverter topologies organized.

--
Svenn

 

[Kevin Aylward]

svenn.are@bjerkem.de wrote:

"Kevin Aylward" <kevindotaylwardEXTRACT@anasoft.co.uk> wrote in
message news:<bbujb.68$id2.46@newsfep3-gui.server.ntli.net>... ...
So... how much *is* it then.

You want a customer to disclose a negotiated price?

No, only the unnegotiated price. I would guess its in the $10,000's

You are a
professional software writer, and should know how the CAD vendors like
that kind of behaviour?

I publish prices, as should all reputable vendors.


Kevin Aylward
salesEXTRACT@anasoft.co.uk
http://www.anasoft.co.uk
SuperSpice, a very affordable Mixed-Mode
Windows Simulator with Schematic Capture,
Waveform Display, FFT's and Filter Design.