Re: Who's hogging all the Catbox docs

Awesome thanks..

On Mon, Nov 23, 2009 at 7:34 PM, Tom McClintock <tomm@bhpllc.com> wrote:

> Go crazy:
>
> http://arcarc.xmission.com/Test%20Equipment/Atari%20Catbox%20&%20Pods/
>
> Bill can get his EPROM from the archive and start making some Catboxes.
> Without credit.
>
>
>
> tm
>
> Kevin Moore wrote:
>
>> Hmm. Was hoping for a little more than theory, and schematics.
>>
>> The problem is when I hook up the catbox to the board, and get all the
>> start stop clock lines hooked up. Am I supposed to toggle a switch to get it
>> to read a sig, or is it supposed to come up automagically?
>>
>> So far I'm not even able to get the 0000 and 0001 sigs for +5 and Gnd
>>
>> So I'm not sure what I'm doing, <-- lol, or if I'm doing it right.
>>
>> Kevin
>>
>>
>> On Mon, Nov 23, 2009 at 7:23 PM, Kevin Moore <talon.k@gmail.com <mailto:
>> talon.k@gmail.com>> wrote:
>>
>> Will give me a few days to get to my eprom reader, and I think I can
>> hook you up with the bin file for C5
>>
>> Kevin
>>
>>
>>
>> On Mon, Nov 23, 2009 at 6:53 PM, William Boucher <boucher@mnsi.net
>> <mailto:boucher@mnsi.net>> wrote:
>>
>> Wow, cool reading, thanks for the link. Now if I only had the
>> rom file for the eprom chip at C5, I could build one of these
>> from scratch. I'm sure that someone who is good with FPGA's
>> could do a large chunk of the catbox, if not all of it, in one
>> of those.
>>
>> With respect to signature analysis on the Cinematronics CPU
>> board, the setup is using the 16-bit counter (and a few gates)
>> to cycle the board logic and an HP 5004A signature analyzer box.
>> I read somewhere that HP used their own proprietary CRC
>> algorithm but I have to wonder if it would be possible to
>> scratch build a signature display that would show the same
>> values. Obviously, Atari designed their own sig generator with
>> the very simple catbox circuitry so it's certainly possible to
>> build something that would do the job. The HP5004A unit is
>> getting pretty old and it can be hard to find one that is still
>> working. It's hard to sell the Cine Exorciser to people that do
>> not have the HP5004A unit. It would be nice to combine an
>> Exorciser with its own sig display. Then the HP5004A unit would
>> not be needed. Maybe a CPLD sig generator circuit could be
>> built that could be combined with a simple microcontroller, say
>> a Microchip PIC that could control a simple LCD for the readout
>> and any other settings or indicators desired. The trick is to
>> get it to generate the exact same sig codes as the HP5004A does.
>> I assume that that would require getting the value of the
>> polynomial correct, that is assuming that HP didn't really muck
>> about too much when it came to make their sig generator
>> proprietary.
>>
>>
>> William Boucher
>>
>>
>> ----- Original Message ----- From: "Tom McClintock"
>> <tomm@bhpllc.com <mailto:tomm@bhpllc.com>>
>> To: <vectorlist@vectorlist.org <mailto:vectorlist@vectorlist.org>>
>>
>> Sent: Monday, November 23, 2009 6:54 PM
>> Subject: Re: VECTOR: Who's hogging all the Catbox docs
>>
>>
>>
>>
>> http://ionpool.net/arcade/signature_analysis/How_Atari_Signature_Analysis_Works.html
>>
>>
>> ?
>>
>> Kevin Moore wrote:
>>
>> Seems every site I've tried is no longer around.
>>
>> I'm looking for some links to catbox info, I've been
>> able to use the cat box for basic tempest stuff using
>> the tempest doc I have, but when it comes to doing sig
>> analysis I'm doing something wrong.. I can't get any
>> sigs to come up.
>>
>> Thanks,
>>
>> Kevin
>>
>>
>>
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>>
>>
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>>
>>
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Received on Mon Nov 23 23:28:04 2009