Re: CSG 4510 and 4567 and Dmagic reverse engineering

From: Nate Lawson <>
Date: Mon, 26 Jul 2010 09:43:18 -0700
Message-ID: <> wrote:
> Dear Friends,
> finally i found missing chips for my Commodore 65 board. Before testing if all 
> is ok, i need know:
> is it possible extract verilog code by chips?
> in which way?
> what about C65 PSU unit? I think it is the same of Amiga CD32, is true?

No, the chip design is not software that can be extracted. It is a set
of behavior at the external pins that is derived from a cascade of
internal logic. It can be very difficult to figure out the internal
structure just from external behavior.

The way chip reversing is done is to depackage and image the chip. Then
identify major features (ALU, register file, etc.) Image recognition
software (similar to OCR) can help these days in reconstructing small
areas of chips. But it's still too complex for larger chips.

Here is an example:


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Received on 2010-07-26 17:00:03

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