Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Rick

On 1/12/2011 9:17 AM, Andrew Miner wrote:

  -- Forwarded message --
  From: Steven Michalske<[1]smichal...@gmail.com>
  To: gEDA user mailing list<[2]geda-user@moria.seul.org>
  Date: Tue, 11 Jan 2011 18:53:02 -0800
  Subject: Re: gEDA-user: Bugs, warts and feature requests (5)
  On Tue, Jan 11, 2011 at 4:03 PM, Kai-Martin Knaak
  <[3]kn...@iqo.uni-hannover.de>  wrote:
  >  gerbv feature request: Add a view mode that shows only the
  difference
  >  of two layers. This would be handy when I have to asses the
  changes that
  >  I made to an existing design.
  Make the layers XOR logically but not the colors.
  i.e.  old layer red, new layer green,  deleted portions would show
  up
  in red, new portions would be green.
  Steve

+1  Purple for the non-modified areas, red for deleted, and green for
new.  This would be VERY helpful.
Andy Miner


Already there isn't it?  If you can open the same layer more than once.  
So open a layer before you edit it.  Once you have made changes, open 
the layer again.  Make old one red and new one green.  Select Rendering: 
Fast with XOR.  The unchanged copper will be yellow.  Removed copper 
will be red.  New copper will be green.


Rick


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Re: gEDA-user: PCB Vias

2011-01-12 Thread Rob Butts
   Thanks, got it!

   On Wed, Jan 12, 2011 at 5:35 PM, DJ Delorie <[1...@delorie.com> wrote:

 The autorouter uses the current route style, not the DRC rules, to
 determine what size traces and vias it uses.
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References

   1. mailto:d...@delorie.com
   2. mailto:geda-user@moria.seul.org
   3. http://www.seul.org/cgi-bin/mailman/listinfo/geda-user


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Re: gEDA-user: PCB Vias

2011-01-12 Thread DJ Delorie

The autorouter uses the current route style, not the DRC rules, to
determine what size traces and vias it uses.


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gEDA-user: PCB Vias

2011-01-12 Thread Rob Butts
   I tried setting the minimum annular ring size and minimum drill size in
   PCB but after autorouting the size of the vias don't change.
   Is there a way of setting up PCB so that the vias are a predefined
   size?


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Kai-Martin Knaak
DJ Delorie wrote:

> How about listing attributes used in the current page already first,
> then all the other attributes?  

The attribute editor refers to symbols on the schematic. So all attributes 
are already present, anyway. Did you mean to sort according to abundance?

To me, the benefit in sorting is the convenience to always find the most
frequently needed attributes on first glance. The abundance criterion might 
achieve this for different styles without user interaction.

---<)kaimartin(>---
-- 
Kai-Martin Knaak  tel: +49-511-762-2895
Universität Hannover, Inst. für Quantenoptik  fax: +49-511-762-2211 
Welfengarten 1, 30167 Hannover   http://www.iqo.uni-hannover.de
GPG key:http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get



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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Kai-Martin Knaak
Krzysztof Kościuszkiewicz wrote:

> What would be the semantics of these attributes when attached to some
> other symbol?

None. They would simply ignored. Just like any other symbol that a gnetlist 
back-end does not explicitly look for.

---<)kaimartin(>---
-- 
Kai-Martin Knaak  tel: +49-511-762-2895
Universität Hannover, Inst. für Quantenoptik  fax: +49-511-762-2211 
Welfengarten 1, 30167 Hannover   http://www.iqo.uni-hannover.de
GPG key:http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get



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Re: gEDA-user: Soft and Hard symbols

2011-01-12 Thread Edward Hennessy
   On Jan 12, 2011, at 11:29 AM, al davis <[1]ad...@freeelectron.net>
   wrote:

   Both of these are areas where we could take the lead, but I need
   help to do that.  I can't do it alone, and can't do it if people
   are fighting it.  Does anyone want to help?

   I would like to help with this project.

   Cheers,

   Ed
   Sent from my iPhone

References

   1. mailto:ad...@freeelectron.net


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Kai-Martin Knaak
Peter Clifton wrote:

> gerbv feature requests will probably get lost if posted here.. so if /
> when anyone files bugs for these requests, remember to find gerbv at
> sourceforge.net/projects/gerbv

The issues I report in this series of postings are intended to go to the 
appropriate bug tracker. That is, unless the discussion uncovers some flaw
in my reasoning or the bug is already known

---<)kaimartin(>---
-- 
Kai-Martin Knaak  tel: +49-511-762-2895
Universität Hannover, Inst. für Quantenoptik  fax: +49-511-762-2211 
Welfengarten 1, 30167 Hannover   http://www.iqo.uni-hannover.de
GPG key:http://pgp.mit.edu:11371/pks/lookup?search=Knaak+kmk&op=get



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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Peter Clifton
On Tue, 2011-01-11 at 18:53 -0800, Steven Michalske wrote:
> On Tue, Jan 11, 2011 at 4:03 PM, Kai-Martin Knaak
>  wrote:
> 
> > • gerbv feature request: Add a view mode that shows only the difference
> > of two layers. This would be handy when I have to asses the changes that
> > I made to an existing design.
> 
> 
> Make the layers XOR logically but not the colors.
> 
> i.e.  old layer red, new layer green,  deleted portions would show up
> in red, new portions would be green.

Excellent idea.

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)



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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Peter Clifton
On Wed, 2011-01-12 at 01:03 +0100, Kai-Martin Knaak wrote:

> • gerbv feature request: Add a view mode that shows only the difference 
> of two layers. This would be handy when I have to asses the changes that 
> I made to an existing design.

gerbv feature requests will probably get lost if posted here.. so if /
when anyone files bugs for these requests, remember to find gerbv at
sourceforge.net/projects/gerbv


-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)
Tel: +44 (0)1223 748328 - (Shared lab phone, ask for me)



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Re: gEDA-user: Soft and Hard symbols

2011-01-12 Thread al davis

> Dietmar Schmunkamp wrote:
> > Start a design with gschem --> simulate it --> get it thru
> > pcb --> extract physical paramaters from the layout -->
> > OPTIMIZE* --> feedback to gschem --> restart the loop.

On Friday 07 January 2011, Kai-Martin Knaak wrote:
> Unfortunately, at the current state of geda and friends the
> simulate  step is a weak spot. Not so much because of
> weaknesses in the simulation algorithm. With gnucap and
> ngspice there are two very capable engines. It is the
> absence of readily available models and almost no GUI
> support that blocks the road.

Actually, not at all because of weaknesses in the simulation 
algorithm.

NGspice has essentially the same algorithms as LTspice.  When I 
benchmarked them (a few years ago) they were indistinguishable, 
which makes sense because they are both derivatives of Spice-3 
from Berkeley, which also is mostly indistinguishable in a 
performance sense.

Gnucap has more advanced algorithms.  My benchmarks show much 
faster performance on large circuits and more robust time step 
control.  Ironically, "switch mode power supply" is a type of 
circuit that works fine on gnucap, but I got identical 
believable bad results on both NG and LT spice, due to step 
control problems.

There is a real problem with the interface to gEDA, and also 
with displaying the results.  Does anyone want to help fix this 
problem

There is somewhat of a problem with models, because most models 
are written for a specific simulator and moving to another makes 
a lot of them not work.  There are several strategies for 
improving this situation, ranging from adding features to the 
simulator to porting models.

Both of these are areas where we could take the lead, but I need 
help to do that.  I can't do it alone, and can't do it if people 
are fighting it.  Does anyone want to help?


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Andrew Miner
 -- Forwarded message --
 From: Steven Michalske <[1]smichal...@gmail.com>
 To: gEDA user mailing list <[2]geda-u...@moria.seul.org>
 Date: Tue, 11 Jan 2011 18:53:02 -0800
 Subject: Re: gEDA-user: Bugs, warts and feature requests (5)
 On Tue, Jan 11, 2011 at 4:03 PM, Kai-Martin Knaak
 <[3]kn...@iqo.uni-hannover.de> wrote:
 > gerbv feature request: Add a view mode that shows only the
 difference
 > of two layers. This would be handy when I have to asses the
 changes that
 > I made to an existing design.
 Make the layers XOR logically but not the colors.
 i.e.  old layer red, new layer green,  deleted portions would show
 up
 in red, new portions would be green.
 Steve

   +1  Purple for the non-modified areas, red for deleted, and green for
   new.  This would be VERY helpful.
   Andy Miner

References

   1. mailto:smichal...@gmail.com
   2. mailto:geda-user@moria.seul.org
   3. mailto:kn...@iqo.uni-hannover.de


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Re: gEDA-user: PCB's postscript exporter

2011-01-12 Thread Andrew Miner
 -- Forwarded message --
 From: DJ Delorie <[1...@delorie.com>
 To: gEDA user mailing list <[2]geda-u...@moria.seul.org>
 Date: Tue, 11 Jan 2011 16:20:27 -0500
 Subject: Re: gEDA-user: PCB's postscript exporter
 Fixed in GIT head.  Added the appropriate DSC lines, rearranged the
 code to calculate page size before printing the initial header.

   Thank you DJ!

References

   1. mailto:d...@delorie.com
   2. mailto:geda-user@moria.seul.org


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread DJ Delorie

How about listing attributes used in the current page already first,
then all the other attributes?  We already do something like that for
the symbol chooser.


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Stephan Boettcher
Krzysztof Kościuszkiewicz  writes:

> I would say the existing attribute/backend/semantics interaction
> matrix is complex enough
> to require full analysis of the implications of yet another attribute
> being added...

The matrix is so complex because it is not orthogonal.  The solution is:
more attributes and less overloading, not the reverse.

-- 
Stephan


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Krzysztof Kościuszkiewicz
2011/1/12 Kai-Martin Knaak :

> • gsch2pcb wart: The net of input/output symbols is evaluated from its
> refdes. Consequently, the restrictions to refdeses apply: No uncapitalized
> suffix, no hyphen, etc. Proposal: evaluate the net from dedicated attributes.
> E.g. "in-net=", "out-net="

What would be the semantics of these attributes when attached to some
other symbol?
Should they be attached to symbol or to individual pins? What about
handling in different backends?

I would say the existing attribute/backend/semantics interaction
matrix is complex enough
to require full analysis of the implications of yet another attribute
being added...
-- 
Krzysztof Kościuszkiewicz
"Simplicity is the ultimate sophistication" -- Leonardo da Vinci


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Krzysztof Kościuszkiewicz
2011/1/12 Peter TB Brett :

>> How about: Like the drop-down list of default attributes the add
>> Attribute line presents.
>>       netname
>>       footprint
>>       value
>>       refdes
>>       source
>>       ...
>>
>> I guess, this order was determined by intuition of a developer
>> long time ago. Suggestion: take this list as a default order for
>> the list of attributes. Make this default configurable in gschemrc.
>> Ouups, this is another feature request ;^)
>
> It's configurable in system-gschemrc.
>
> Sorting request doesn't seem unreasonable.

Sorting could be done to present attributes in the same order as
defined in system-gschemrc.
That might be a good first attempt. If somebody wants a different
ordering for another workflow, just supply different ordering in rc
file.
-- 
Krzysztof Kościuszkiewicz
"Simplicity is the ultimate sophistication" -- Leonardo da Vinci


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Re: gEDA-user: Bugs, warts and feature requests (5)

2011-01-12 Thread Peter TB Brett
On Wednesday 12 January 2011 02:46:40 Kai-Martin Knaak wrote:

> >> • gsch2pcb wart: The net of input/output symbols is evaluated from its
> >> refdes. Consequently, the restrictions to refdeses apply: No
> >> uncapitalized suffix, no hyphen, etc. Proposal: evaluate the net from
> >> dedicated attributes. E.g. "in-net=", "out-net="
> > 
> > gnetlist missing feature, nothing to do with gsch2pcb.
> 
> Well, from a user point of view, the separation is blurry.

How can we make it less blurry?

> >> • gschem feature request: Sort attributes in multiple attributes dialog.
> >> The most frequent ones should be on top.
> > 
> > Most frequent determined how?
> 
> How about: Like the drop-down list of default attributes the add
> Attribute line presents.
>   netname
>   footprint
>   value
>   refdes
>   source
>   ...
> 
> I guess, this order was determined by intuition of a developer
> long time ago. Suggestion: take this list as a default order for
> the list of attributes. Make this default configurable in gschemrc.
> Ouups, this is another feature request ;^)

It's configurable in system-gschemrc.

Sorting request doesn't seem unreasonable.

  Peter

-- 
Peter Brett 
Remote Sensing Research Group
Surrey Space Centre


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