Abd-ul Rahman,
        just to clarify one issue, the nets would be renamed again upon any
sheet where they were used or appeared as individual nets, as soon as they
exit the bus structure. I didn't know that this was not implicit in my
previous descriptions. The only memory exercise is required when renaming
the ports upon entry or exit from the bus structure. The only person who
practices this memory exercise is the schematic editor and I would commonly
copy chunks of the bus entry/exit to ensure correct matching of signal
naming.
        Your point #3 below does have significant merit but 'personally' I
would not like to use of blocks of port symbols. Again it would just lead to
clutter as well as leading to possible errors where a port or sheet symbol
is missed/misspelled/misplaced. Using the method I have described there is
one control signal port symbol reducing clutter and saving sheet real
estate.
        I too apologize if my remarks have seemed too critical or cutting, I
could not understand why you were so critical of this system when I have
previously had good experiences using it. I now think I understand why you
thought there were possibly more problems with it then there really are,
because of my explanation above.

Sincerely,

Brad Velander
Lead PCB Design
Norsat International Inc.
#100 - 4401 Still Creek Dr.,
Burnaby, B.C., Canada.
V5C6G9.
voice: (604) 292-9089 (direct line)
fax:    (604) 292-9010
email: [EMAIL PROTECTED]
www: www.norsat.com


> -----Original Message-----
> From: Abd ul-Rahman Lomax [mailto:[EMAIL PROTECTED]]
> Sent: Sunday, April 08, 2001 11:16 PM
> To: Protel EDA Forum
> Subject: Re: [PEDA] Bus nets
> 
> 
> 
> I'm still not convinced that actually associating nets to a named bus 
> (rather than the mere graphical appearance of same) brings 
> anything to the 
> table. Essentially, if one does not show the subnets, the drawing is 
> potentially confusing or misleading or unclear, and if one 
> does show the 
> subnets, then one might as well skip the named bus.

<SNIP>

> But there is a third 
> choice which is *at 
> least* as functional, in my view, as bus association, without 
> introducing 
> new complications, which is to draw such a bus without 
> actually creating a 
> bus port.
> 
> [EMAIL PROTECTED]
> Abdulrahman Lomax
> P.O. Box 690
> El Verano, CA 95433


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