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Subject: Re: [geda-user] Converting schematic from OrCAD to gschem
From: Peter Clifton <pcjc2 AT cam DOT ac DOT uk>
To: geda-user AT delorie DOT com
Date: Tue, 06 Jan 2015 01:09:00 +0000
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On Tue, 2014-12-30 at 17:04 +0000, Katya M. wrote:

> The binary file I have starts with D0 CF, so the file command reports
> it as "Microsoft Office Document" or "Composite Document File V2
> Document, No summary info". It looks like OrCAD based their format on
> something from M$ Office - yuck...

Its just a zip-like / Fat file-system like file-format.. (there is a
directory structure inside with internal files).

Orcad DSN files unpack just fine with the tool "gsf".

https://developer.gnome.org/gsf/


Inside are more binary files. These are (as far as I know), not
compatible with the format understood by sarlacc_schem, but you _might_
be lucky, or if not, there _might_ be similarities in format.

Regarding Orcad Layout (if one cares about that), there is an ASCII
interchange format that can export, which might be of interest for
converting files.


PS.. FWIW, Altium Designer files use the same container format as OrCAD.
Internal binary is different (and compressed in various cases), but not
beyond reverse engineering given sufficient motivation, and some known
plaintext.

Regards,

-- 
Peter Clifton <peter DOT clifton AT clifton-electronics DOT co DOT uk>

Clifton Electronics