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Mail Archives: geda-user/2015/07/12/22:32:50

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Date: Sun, 12 Jul 2015 22:32:37 -0400
Message-Id: <201507130232.t6D2WbwH011183@envy.delorie.com>
From: DJ Delorie <dj AT delorie DOT com>
To: geda-user AT delorie DOT com
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(geda-user AT delorie DOT com)
Subject: Re: developer excitement? was Re: [geda-user] gEDA/gschem still alive?
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Reply-To: geda-user AT delorie DOT com

> Busses: gschem currenly only fully supports wires and vectors are only a
> graphic. Add full support for vectors and also support busses. Busses are a
> budirectional collection of wires and vectors with connections of MASTER or
> SLAVE.

I've suggested this before, and agree with jpd that it's the
netlister's job to interpret busses - and it can be done NOW without
changing the way bus rippers (or any part of gschem) work.

http://www.delorie.com/pcb/bus-pins.html

(this was pre-jpd; it's sufficient to just name the nets with the
"bus" data, and let the netlister sort it out)

So a net called 'D5' is one bit (as usual), a net called 'D[0-7]'
groups eight bits, 'D[7-0]' is the same eight but in reverse order,
etc.

The netlister would match that up with a pin numbered '1-4,6,8-10' for
example.

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