TTL/CMOS logic reverse engineering tools?

Hi folks,

I am looking for a tool that helps to reverse-engineer old PCBs full of TTL/CMOS ICs. Something graphical.

The ideal program would let me place the parts [which should be in a database already :-)] and enter the pin connections. The program then should help me to create a schematic. An auto-router and auto-placer for the schematic is not necessary, my needs would be satisfied by a program which helps me doing this by hand....

I am pretty sure that tools with those capabilities exist, but I have no clue where to start searching. Is there something that fits my needs? Perhaps in the Free Software world? That would be great.

Many thanks and best regards,

Philipp :-)

Reply to
Philipp Hachtmann
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I think you need some good old elbow grease to sort that.....

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You're describing a perfectly normal PCB program that has TTL/CMOS already in it's library (and most of 'em do).

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john jardine

I'm working on an experimental program (Hec - Hobby Electric CAD). I think it does what you describe. It is aiming at doing SCH and PCB simultaneously. Normally we start with SCH and then do the PCB, but Hec is symmetrical so you can start with PCB and do the SCH after wards or simultaneously. In the Hec distribution at my page there are no component libraries included, but you can use the gEDA libraries for SCH- PCB-symbols. To do so you have to modify some Perl scripts. So some knowledge in Perl scripting is necessary. Note that Hec is experimental and far from complete, but it can do the job for you if you have patience, programming skills, and the right attitude. Hec is free software (GPL). It runs with Linux and XFree86. It does not work with MS Windows, and it is not easily portable.

Look at the Hec page at and

/Sven Wilhelmsson

Reply to
Sven Wilhelmsson

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