Re: gEDA-user: Help - please

[Dan McMahill <dan-atMUNGEDmcmahill_dot_net>]

Harold D. Skank wrote:
> People,
> 
> I need some help here.  I'm trying to work with _LARGE_ symbols and
> footprints.  In the smaller case, over 1100 pins and in the larger case
> over 1700 pins.  In order to make the information more readable, I have
> broken the symbols into slots, 4 in the smaller case and 6 in the larger
> case.  Since none of the slots within a symbol share any common pins, I
> have deleted the slotdef attribute from the symbols.  I have included
> slotnum and slot.
> 
> I should warn here that most of my work so far has been with the smaller
> symbols/footprint, but in the limited testing on the larger one I have
> seen the same problems.
> 
> In particular, each symbol slot has approximately 50 GND connections
> (again I emphasize none of these connections are shared between slots).
> In the 1100 pin case, this makes about 200 GND connections total.
> 
> To run gsch2pcb I have created a project1 file in which I can tell the
> system which schematic pages to process (1 symbol slot per page).  If I
> process only 1 or 2 pages, i.e. 1 or 2 slots, the system functions
> correctly and I can enter PCB and pull up the footprint and view the
> associated netlist.  When I add a 3rd slot the gsch2pcb program
> generates an error message and the generated netlist contains the GND
> netname, but has no associated connection list.
> 
> I have experimented with this process, and it appears to work properly
> for any 2 slots, and fails anytime there are 3 or more slots.
> 
> Is there any possibility that I am exceeding an array bound (in either
> gsch2pcb or gnetlist) which would produce this problem, and more
> important, how do I resolve the issue?

Can you send me a test case that I can run?  It is quite possible that 
there is some bound in there although from what you describe it is is 
gnetlist and probably the gnet-PCB.scm file.  I'm thinking it should be 
easy (I hope).  The good news is gnet-PCB.scm is very short.

If you can just send the portion which has the big chip with lots and 
lots of ground connections, that would be great.

Offlist is fine if you'd rather not post here.

-Dan



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