Thank you for your help Mr.Lomax.

Now that I know the rules for this mailing list I will post any future
questions better.

Like you said I have a deadline.
As for the other two questions I asked earlier do I have to re-ask them in a
different Emails with different subjects; or will someone be able to answer
directly from my first Email?

Thank you for your time,

Bryan Bernesi
-----Original Message-----
From: Abd ul-Rahman Lomax <[EMAIL PROTECTED]>
To: Multiple recipients of list proteledausers
<[EMAIL PROTECTED]>
Date: Monday, February 12, 2001 2:37 PM
Subject: Re: [PROTEL EDA USERS]: complex Multi-level schematics...


>At 10:29 AM 2/12/01 -0500, Bryan Bernesi wrote:
>
>>Also, each module has to be placed and wired the same way. No problem, or
so
>>I thought. I placed the components and wired the first module; ran the DRC
>>no problems. I Copied it, and pasted it (using >>EDIT>>PASTE
SPECIAL>>PASTE
>>ARRAY), great.... no problems so far, once I had all 24 modules placed I
ran
>>a DRC again and I get clearance and short-circuit constraints. why????
>
>I'm going to take the opportunity to ask writers to the list to do two
things:
>
>(1) Ask one question per post with an appropriate subject line. Yes. I
>numbered it as one thing, but it really is two....
>The reason I do this is that we are making efforts to compile a support
>database from the archives of this list and someone looking to copy PCB
>sections is *not* going to look under "complex multi-level schematics." So
>"appropriate" means something which as clearly as possible refers to the
>problem. In this case the problem really has nothing to do with Schematic
>but with how PCB operates.
>
>Now, I know that Mr. Bernesi is probably facing a deadline, and, besides,
>he's a newcomer and newcomers deserve special treatment; this is not aimed
>at him, but is merely a request to all writers.
>
>Now, as to the question, the first one (there is another question in the
>post which is completely unrelated to the first question, which I'm not
>answering here), when a block containing components is copied in PCB, the
>net attributes are normally not copied. So all those 23 other modules have
>no net assignments, which is why they generate DRC errors; there are free
>no-net primitives in contact with pads, and no-net pads are not allowed
>contact with *any* other copper primitives.
>
>So how to get from A to B. There are many methods which have been described
>in this list from time to time by various authors. But here is a rough
>outline of one:
>
>In one module, on the schematic, make all the reference designators such
>that they can be generically edited to represent each of 24 modules.
>Perhaps the ICs would be numbered UX1 instead of U1, etc. Place the module
>on the PCB and route it as usual. On schematic, copy the module 23 times so
>you now have 24 modules. Edit each module to globally replace, within the
>module, X with NN, where NN is the module number. This, of course, assumes
>that X has not been used anywhere in a reference designator except as
>described herein.
>
>In PCB, copy the original module to a scratch PCB. You could edit the
>reference designators on the original PCB to replace the X with 01 at this
>point. Be sure to save the scratch PCB, then edit it to replace X with 02;
>copy this back to the original PCB in the place of the second module.
>Reload the scratchPCB, edit X to 03, copy, etc., etc.
>
>There will be DRC errors on all the copied modules. To get rid of them,
>generate a full netlist from the schematic; load this netlist into PCB, and
>run Update Free Primitives from Component Pads (under Design/Netlist
>Manager/Menu). Any errors left are presumably real errors.
>
>Now, if Mr. Bernesi has already got the proper numbering of all the
>modules, both on his schematic and on the PCB, he only needs to run that
>Update command to fix the net assignments on the track he copied.
>
>
>Abd ul-Rahman Lomax
>LOMAX DESIGN ASSOCIATES
>PCB design, consulting, and training
>Protel EDA brokering (resale) services
>Sonoma, California, USA
>(707) 939-7021, efax (419) 730-4777
>[EMAIL PROTECTED]
>[EMAIL PROTECTED]
>
>
>
>
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