Re: Who's hogging all the Catbox docs

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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Received on Mon Nov 23 20:34:57 2009