Re: visual 6502 simulation...

From: Nate Lawson <nate_at_root.org>
Date: Thu, 16 Sep 2010 15:04:38 -0700
Message-ID: <4C929476.6070306@root.org>
Wolfgang Moser wrote:
> Vanessa Ezekowitz schrieb:
>> On Thu, 16 Sep 2010 11:43:27 +0200
>> Wolfgang Moser <womo@news.trikaliotis.net> wrote:
>>
>>> There are some 20000x20000 shots from the 8726 REU-DMA chip lying around
>>> at my harddisk.... But I thought to save them until I retired ;-)
>> These need to be placed on a server somewhere for easy access!
> 
> Michael Huth whom I provided one of my REUs to (a 1700 with a 8726R1 in
> a "golden" DIL-64 package) and who actually did the die shots with a
> precision stepper microscope at one of his former research facilities.
> 
> Of course he made the single shots publically available:
> 
>      http://mail.lipsia.de/~enigma/neu/6581.html
> 
> "My work" in fact is puzzling together all the tiny single shots (this
> is done already) and then reverse-engineering the chip and adding
> findings to me REU technical refernece write-up. I really don't know,
> when I find the time to do this.

BTW, I've put a higher-res shot of the 6581 filter section on my
website. It was done by Christopher Tarnovsky and is higher quality than
most I've seen.

http://www.root.org/~nate/c64/sid/

If Michael Huth wants resistance measurements taken of lines at various
points in the filter, I can ask Chris if he'd be willing to do that.

-- 
Nate


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Received on 2010-09-16 23:00:05

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