Re: Who's hogging all the Catbox docs

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> 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> 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>
>> To: <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 20:31:29 2009